CN115843125A - Communication method and communication device - Google Patents

Abstract

The application provides a communication method and a communication device, which can improve communication quality and communication efficiency and further improve user experience, and the method comprises the following steps: the method comprises the steps that terminal equipment sends a data bearing establishment request to network equipment, wherein the data bearing establishment request comprises a plurality of data packets; and under the condition that the retransmission times of the first data packet in the plurality of data packets are greater than or equal to the preset times, the terminal equipment retransmits the data bearer establishment request to the network equipment.

Description

Communication method and communication device

technical field

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

Background technique

After connecting to the network, terminal devices usually establish data bearers, such as packet data network (packet data network, PDN), protocol data unit (protocol data unit, PDU), etc., used to transmit data services, IP multimedia subsystem (IP multimedia subsystem) , IMS) business data such as voice calls. When the terminal device sends service data to the network device through the data bearer, if a data packet is lost, the terminal device will repeatedly send the lost data packet to the network device.

However, in the current communication method, when the number of retransmissions of the lost data packet transmitted by the terminal device is greater than the preset number of times, the terminal device will determine that a radio link failure (radio link failure, RLF) has occurred, thereby initiating radio resource control (radio resource control, RRC) re-establishment affects the transmission of other data bearers, resulting in low communication quality and efficiency, and poor user experience.

Contents of the invention

The present application provides a communication method and a communication device, which can improve communication quality and communication efficiency, and further improve user experience.

In a first aspect, a communication method is provided, including: a terminal device sends a data bearer establishment request to a network device, and the data bearer establishment request includes a plurality of data packets; the first data packet in the plurality of data packets When the number of retransmissions is greater than or equal to the preset number of times, the terminal device resends the data bearer establishment request to the network device.

In the communication method of the present application, when the terminal device sends a data bearer establishment request to the network device, if the number of retransmissions of the data packet included in the data bearer establishment request is greater than or equal to the preset number of times, the terminal device retransmits to the network The device sends a data bearer establishment request. In this way, when the number of retransmissions of data packets is greater than or equal to the preset number of times, the terminal device will not initiate RRC reconstruction, which can reduce the impact on other data bearer transmissions, improve communication quality and Communication efficiency, thereby improving user experience.

It should be understood that the data bearer establishment request is a message sent by the terminal device to the network device for requesting establishment of the data bearer. The data bearer contains data information and can be used to transmit various service data, for example, to transmit service data of a video call. The number of data packets included in the plurality of data packets is greater than or equal to 2, for example, may be 5, 10, and so on. The number of multiple data packets may be determined according to the data transmission capability of the terminal device to the network device and the data volume of the data bearer establishment request. The data amounts of any two data packets in the plurality of data packets may be the same or different. The terminal device can send one or more data packets among the multiple data packets to the network device at a time.

In some implementation manners of the first aspect, the terminal device is a long term evolution LTE type terminal device, and the data bearer establishment request is a packet data network PDN establishment request.

It should be understood that an LTE-type terminal device refers to a terminal device that can access an LTE network, for example, a mobile phone or a tablet computer that can access an LTE network. When an LTE-type terminal device accesses an LTE network, the terminal device usually establishes a PDN. When the terminal device has a new service requirement and needs to establish a new PDN, the terminal device will send a PDN establishment request to the network device, and the PDN establishment request includes multiple data packets.

In some implementation manners of the first aspect, the terminal device is a new wireless NR type terminal device, and the data bearer establishment request is a protocol data unit PDU session establishment request.

It should be understood that an NR type terminal device refers to a terminal device that can access an NR network, for example, a mobile phone or a tablet computer that can access an NR network. In the case of an NR-type terminal device accessing an NR network, the terminal device usually establishes a PDU. When the terminal device has a new service requirement and needs to establish a new PDU, the terminal device will send a PDU session establishment request to the network device, and the PDU session establishment request includes multiple data packets.

In some implementation manners of the first aspect, before the terminal device resends the data bearer establishment request to the network device, the method further includes: the terminal device determines that the first data packet is unsuccessful Sending: the terminal device sends the first data packet to the network device again.

It should be understood that the terminal device determines that the first data packet is not sent successfully, and the terminal device sends the first data packet to the network device again are performed repeatedly. In addition, the terminal device will determine the retransmission times of the first data packet until the retransmission times of the first data packet are greater than or equal to the preset times. Optionally, after the terminal device determines that the first data packet has not been successfully sent, the method 200 further includes: determining the number of retransmissions of the first data packet; when the number of retransmissions of the first data packet is less than the preset number of times, the terminal device Send the first data packet to the network device again.

In some implementations of the first aspect, the method further includes: the terminal device receiving first information from the network device, where the first information is used to indicate the number of data packets successfully received by the network device Information; determining, by the terminal device, that the first data packet has not been successfully sent includes: determining, by the terminal device, that the first data packet has not been successfully sent based on the first information.

It should be understood that the data packets successfully received by the network device are one or more data packets among the multiple data packets. The information used to indicate the data packets successfully received by the network device may refer to any information capable of indicating the successfully received data packets by the network device. Exemplarily, assuming that multiple data packets include data packet 1, data packet 2 and data packet 3, and the data packets successfully received by the network device are data packet 1 and data packet 2, then the information indicating the data packets successfully received by the network device may be They are "01" and "02", where "01" is used to indicate data packet 1, and "02" is used to indicate data packet 2. Since the first information can indicate the data packets successfully received by the network device, and at the same time, the terminal device can determine the data packets that the terminal device has sent to the network device, the terminal device combines the data packets successfully received by the network device and the data sent by the terminal device to the network device By comparing the packets, it is possible to determine the first data packet that was not successfully sent. Exemplarily, the multiple data packets include data packet 1, data packet 2, and data packet 3. After the terminal device sends data packet 1 and data packet 2 to the network device, it receives first information, and the first information includes "01" , "01" is used to indicate data packet 1, so the terminal device determines that data packet 1 is successfully sent, and the terminal device compares the data packet 1 fed back by the network device with the data packet 1 and data packet 2 sent by the terminal device to the network device, It can be determined that packet 2 was not successfully received by the network device. In this way, the network device actively sends the first information to the terminal device, which facilitates the terminal device to determine the unsuccessfully sent data packets, and helps to improve communication efficiency.

In some implementation manners of the first aspect, before the terminal device receives the first information from the network device, the method further includes: the terminal device sends second information to the network device, the The second information is used to instruct the network device to feed back information about successfully received data packets.

It should be understood that the second information is request information sent by the terminal device to the network device for instructing the network device to feed back the first information. In this manner, the terminal device can request the network device to feed back the first information to the terminal device according to requirements, so that the terminal device can obtain information about data packets successfully received by the network device at any time.

In some implementations of the first aspect, the method further includes: the terminal device sending third information to the network device, where the third information includes information indicating the data packet sent by the terminal device information and information used to indicate that the network device feeds back unsuccessfully received data packets; the terminal device receives fourth information from the network device, and the fourth information is used to indicate that the network device has not successfully received Information about the data packet: determining, by the terminal device, that the first data packet has not been successfully sent includes: determining, by the terminal device, that the first data packet has not been successfully sent based on the fourth information.

It should be understood that the data packets sent by the terminal device may refer to one or more data packets in the multiple data packets, or may refer to all the data packets in the multiple data packets. The network device can determine the data packet sent by the terminal device to the network device according to the third information. Based on the third information, the network device compares the data packets sent by the terminal device to the network device with the data packets successfully received by the network device, and can determine the data packets not successfully received by the network device. The network device sends the fourth information to the terminal device based on the identification information agreed with the terminal device and used to indicate each of the multiple data packets. Optionally, the fourth information may be negative acknowledgment (negative acknowledgment, NACK) information, the NACK information is used to indicate that the network device has not successfully received the data packet, and at the same time, the NACK information includes data used to indicate that the network device has not successfully received information about the package.

In a second aspect, a communication device is provided, configured to execute the method in any possible implementation manner of the foregoing first aspect. Specifically, the apparatus includes a module configured to execute the method in any possible implementation manner of the foregoing first aspect.

In a third aspect, the present application provides yet another communication device, including a processor, the processor is coupled to a memory, and can be used to execute instructions in the memory, so as to implement the method in any possible implementation manner of the above first aspect. Optionally, the device further includes a memory. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface.

In an implementation manner, the apparatus is a terminal device. When the device is a terminal device, the above-mentioned communication interface may be a transceiver, or an input/output interface.

In another implementation manner, the device is a chip configured in a terminal device. When the device is a chip configured in a terminal device, the aforementioned communication interface may be an input/output interface.

In a fourth aspect, a processor is provided, including: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the method in any possible implementation manner of the above first aspect.

In a specific implementation process, the above-mentioned processor can be a chip, the input circuit can be an input pin, the output circuit can be an output pin, and the processing circuit can be a transistor, a gate circuit, a flip-flop, and various logic circuits. The input signal received by the input circuit may be received and input by, for example but not limited to, the receiver, the output signal of the output circuit may be, for example but not limited to, output to the transmitter and transmitted by the transmitter, and the input circuit and the output The circuit may be the same circuit, which is used as an input circuit and an output circuit respectively at different times. The embodiment of the present application does not limit the specific implementation manners of the processor and various circuits.

In a fifth aspect, a processing device is provided, including a processor and a memory. The processor is used to read instructions stored in the memory, and may receive signals through the receiver and transmit signals through the transmitter, so as to execute the method in any possible implementation manner of the first aspect above.

Optionally, there are one or more processors, and one or more memories.

Optionally, the memory may be integrated with the processor, or the memory may be set separately from the processor.

In the specific implementation process, the memory can be a non-transitory (non-transitory) memory, such as a read-only memory (read only memory, ROM), which can be integrated with the processor on the same chip, or can be set in different On the chip, the application does not limit the type of the memory and the arrangement of the memory and the processor.

It should be understood that a related data interaction process, for example, sending indication information may be a process of outputting indication information from a processor, and receiving capability information may be a process of receiving input capability information by a processor. In particular, processed output data may be output to the transmitter, and input data received by the processor may be from the receiver. Wherein, the transmitter and the receiver may be collectively referred to as a transceiver.

The processing device in the above-mentioned fifth aspect may be a chip, and the processor may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; When implemented, the processor may be a general-purpose processor, which is realized by reading the software code stored in the memory, and the memory may be integrated in the processor, or it may be located outside the processor and exist independently.

According to a sixth aspect, a computer program product is provided, and the computer program product includes: a computer program (also referred to as code, or an instruction), which, when the computer program is executed, causes the computer to perform any of the above-mentioned first aspects. A method in one possible implementation.

In a seventh aspect, a computer-readable storage medium is provided, and the computer-readable storage medium stores a computer program (also referred to as code, or instruction) which, when run on a computer, causes the computer to execute the above-mentioned first aspect. A method in any of the possible implementations.

Description of drawings

FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application;

FIG. 2 is a schematic flowchart of a communication method provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

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

Detailed ways

The technical solution in this application will be described below with reference to the accompanying drawings.

In the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. For example, the first numerical value and the second numerical value are only used to distinguish different numerical values, and the sequence thereof is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the number and execution order, and words such as "first" and "second" do not necessarily limit the difference.

It should be noted that, in the embodiments of the present application, words such as "exemplarily" or "for example" are used as examples, illustrations or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a concrete manner.

In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one item (piece) of a, b, or c can represent: a, b, c, a-b, a--c, b-c, or a-b-c, where a, b, c can be single or is multiple.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: long term evolution (long termevolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) Communication System, 5th Generation (5G) System or New Radio (NR), New systems that may appear in the future, etc.

The terminal equipment in this embodiment of the present application may also be called: user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), access terminal, subscriber unit, subscriber station, Mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

A terminal device may be a device that provides voice/data connectivity to users, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and the like. At present, examples of some terminal devices include: mobile phone (mobile phone), tablet computer, notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) device, enhanced Augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid Wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, cellular phones, cordless phones, session initiation protocol , SIP) telephone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle Devices, wearable devices, terminal devices in a 5G network or terminal devices in a future evolved public land mobile network (PLMN), etc., are not limited in this application.

As an example but not a limitation, in this application, the terminal device may be a terminal device in an Internet of Things (internet of things, IoT) system. The Internet of Things is an important part of the development of information technology in the future. Its main technical feature is to connect objects to the network through communication technology, so as to realize the intelligent network of man-machine interconnection and object interconnection. Exemplarily, the terminal device in this embodiment of the present application may be a wearable device. Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that can be worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also can achieve powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.

As an example but not a limitation, in this embodiment of the present application, the terminal device may also be a terminal device in machine type communication (machine type communication, MTC). In addition, the terminal device can also be an on-board module, on-board module, on-board component, on-board chip, or on-board unit built into the vehicle as one or more components or units. The on-board component, on-board chip, or on-board unit can implement the method provided in this application. Therefore, the embodiments of the present application can also be applied to the Internet of Vehicles, such as vehicle-to-everything (V2X), long-term evolution-vehicle (LTE-V), vehicle-to-vehicle , V2V) technology, etc.

The network device involved in this application may be a device that communicates with a terminal device. This network device may also be called an access network device or a wireless access network device. It may be a transmission reception point (transmission reception point, TRP), or a The evolved base station (evolved NodeB, eNB or eNodeB) in the LTE system can also be a home base station (for example, home evolved NodeB, or home Node B, HNB), a base band unit (base band unit, BBU), or a cloud A wireless controller in a wireless access network (cloud radio access network, CRAN) scenario, or the network device can be a relay station, an access point, a vehicle device, a wearable device, and a network device in a 5G network or a future evolved PLMN network The network equipment in the WLAN can also be the access point (access point, AP) in the WLAN, or the gNB in the NR system. The above-mentioned network equipment can also be a city base station, a micro base station, a pico base station, a femto base station, etc. etc., the present application does not make a limitation on this.

In a network structure, the network device may include a centralized unit (centralized unit, CU) node, or a distributed unit (distributed unit, DU) node, or a RAN device including a CU node and a DU node, or a control plane CU node (CU -CP node) and RAN equipment of user plane CU node (CU-UP node) and DU node.

The network device provides services for the cell, and the terminal device communicates with the cell through the transmission resources (for example, frequency domain resources, or spectrum resources) allocated by the network device. The cell may belong to a macro base station (for example, a macro eNB or a macro gNB, etc.) , may also belong to the base station corresponding to a small cell, where the small cell may include: a metro cell, a micro cell, a pico cell, a femto cell, etc., These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

In order to facilitate understanding of the embodiment of the present application, a communication system applicable to the embodiment of the present application is described in detail first with reference to FIG. 1 .

FIG. 1 shows a communication system 100 to which the embodiment of the present application is applied. The communication system 100 may include at least one network device, such as the network device 110 shown in FIG. 1 ; the communication system 100 may also include at least one terminal device, such as the terminal device 120 shown in FIG. 1 . The network device 110 and the terminal device 120 may communicate through a wireless link.

Figure 1 exemplarily shows a network device and a terminal device. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. Examples are not limited to this.

Each of the aforementioned communication devices, such as the network device 110 or the terminal device 120 in FIG. 1 , may be configured with multiple antennas. The plurality of antennas may include at least one transmit antenna for transmitting signals and at least one receive antenna for receiving signals. In addition, each communication device additionally includes a transmitter chain and a receiver chain, and those of ordinary skill in the art can understand that they may include a plurality of components related to signal transmission and reception (such as processors, modulators, multiplexers, etc.) , demodulator, demultiplexer or antenna, etc.). Therefore, the network device 110 and the terminal device 120 may communicate through the multi-antenna technology.

Optionally, the foregoing communication system 100 may further include other network entities such as a network controller and a mobility management entity, to which this embodiment of the present application is not limited.

After the terminal device accesses the network, two data bearers are usually established, one of which is used to bear the data service, and the other is used to bear the IMS voice call service. Exemplarily, in the LTE network, the data bearer established by the terminal device is a PDN; in the NR network, the data bearer established by the terminal device is a PDU session. When the user has other service requirements, the terminal device will establish a new data bearer for transmitting service data of other services. Exemplarily, the terminal device accesses the NR network, and the user needs to make a video call through the terminal device, and the terminal device sends a PDU session establishment request (PDU session establishment request) to the network device. The PDU session establishment request may include the terminal device establishing a video call. business data.

Generally, a request for establishing a data bearer (hereinafter referred to as a "data bearer establishment request") includes multiple data packets, and the terminal device sends a data bearer establishment request to the network device, that is, the terminal device sends the multiple data packets to the network device Bag. However, some of the multiple data packets may not be sent successfully, for example, the first data packet among the multiple data packets is lost, in this case, the terminal device will repeatedly send the first data packet to the network device Bag. When the number of retransmissions of the first data packet is greater than or equal to the preset number of times, the terminal device will determine that RLF occurs, causing RRC to be re-established, resulting in network disconnection.

It can be seen that, in such a communication method, in the process of transmitting business data on a newly established data bearer, if the number of data packet retransmissions is greater than or equal to the preset number of times, the terminal device will trigger RLF and perform RRC re-establishment, which will affect The normal transmission of the remaining data bearers results in low communication quality and efficiency, and poor user experience.

In order to solve the above technical problems, this application provides a communication method and a communication device. When a terminal device sends a data bearer establishment request to a network device, if the number of retransmissions of any one or more data packets in the data bearer establishment request is greater than or equal to the preset number of times, the terminal device will resend the data bearer establishment request to the network device, so that the terminal device can avoid RRC reconstruction and reduce the impact on the normal transmission of other data bearers, thereby improving communication quality and communication efficiency, and improving User experience.

The communication method of the present application will be described in detail below with reference to FIG. 1 . The embodiments shown in this application show the communication method provided by this application from the perspective of device interaction. The specific form and quantity of each device shown therein are only examples, and should not constitute any limitation to the implementation of the method provided in this application. In the following, the communication method in the embodiment of the present application will be described in detail by taking the terminal device and the network device as execution bodies as examples.

It should be understood that the terminal device in the embodiment of the present application may be the terminal device itself, or a chip, a chip system or a processor that supports the terminal device to implement a communication method, or a logic module or a logic module that can realize all or part of the terminal device. software. The network device in the embodiment of this application may be the network device itself, or a chip, a chip system or a processor that implements a communication method for the network device, or a logic module or software that can realize all or part of the network device. This application There is no specific limitation on this.

FIG. 2 is a schematic flowchart of a communication method 200 provided by an embodiment of the present application. Method 200 includes the following steps:

S201. The terminal device sends a data bearer establishment request to the network device, where the data bearer establishment request includes multiple data packets. Correspondingly, the network device receives the data bearer establishment request from the terminal device.

It should be understood that the data bearer establishment request is a message sent by the terminal device to the network device for requesting establishment of the data bearer. The data bearer contains data information and can be used to transmit various service data, for example, to transmit service data of a video call. The number of data packets included in the plurality of data packets is greater than or equal to 2, for example, may be 5, 10, and so on. The number of multiple data packets may be determined according to the data transmission capability of the terminal device to the network device and the data volume of the data bearer establishment request. Exemplarily, the data transmission capability of the terminal device to the network device may refer to the channel bandwidth. Assume that the channel bandwidth is 1 kilobyte (kilobyte, kB) and the data volume of the data bearer establishment request is 5 kB. In this way, the terminal device can establish the data bearer The request is divided into 5 data packets, each of which has a data volume of 1kB, and the terminal device sends the 5 data packets to the network device in sequence.

The data amounts of any two data packets in the plurality of data packets may be the same or different. The terminal device can send one or more data packets among the multiple data packets to the network device at a time. In a specific example, the data transmission capability of the terminal device to the network device limits the amount of data sent by the terminal device to the network device each time to be less than or equal to 4kB, the data volume of the data bearer establishment request is 8kB, and the data bearer establishment request includes The first data packet, the second data packet and the third data packet, the data volume of the first data packet, the second data packet and the third data packet are respectively 4kB, 2kB and 2kB, and the terminal device can first send the first data packet to the network device data packet, and then send the second data packet and the third data packet to the network device at the same time.

In a possible implementation manner, the terminal device is an LTE type terminal device, and the data bearer establishment request is a PDN establishment request (PDN connectivity request).

It should be understood that an LTE-type terminal device refers to a terminal device that can access an LTE network, for example, a mobile phone or a tablet computer that can access an LTE network. When an LTE-type terminal device accesses an LTE network, the terminal device usually establishes a PDN. When the terminal device has a new service requirement and needs to establish a new PDN, the terminal device will send a PDN establishment request to the network device, and the PDN establishment request includes multiple data packets.

In another possible implementation manner, the terminal device is an NR type terminal device, and the data bearer establishment request is a PDU session establishment request.

It should be understood that an NR type terminal device refers to a terminal device that can access an NR network, for example, a mobile phone or a tablet computer that can access an NR network. In the case of an NR-type terminal device accessing an NR network, the terminal device usually establishes a PDU. When the terminal device has a new service requirement and needs to establish a new PDU, the terminal device will send a PDU session establishment request to the network device, and the PDU session establishment request includes multiple data packets.

Those skilled in the art can understand that a PDU is a data unit transmitted between peer layers. For example, in the physical layer (physical layer), a PDU can be a data bit (bit); in a data link control (data link control) layer , the PDU can be a data frame.

S202. In a case where the number of retransmissions of the first data packet among the multiple data packets is greater than or equal to the preset number of times, the terminal device resends a data bearer establishment request to the network device. Correspondingly, the network device receives the data bearer establishment request from the terminal device.

It should be understood that the first data packet is one or more data packets in the multiple data packets, and the first data packet may also be all the data packets in the multiple data packets. Exemplarily, the multiple data packets include data packet 1, data packet 2, and data packet 3, and the first data packet may refer to data packet 2 in data packet 1, data packet 2, and data packet 3; the first data packet may also be Refers to data packet 1 and data packet 2 among data packet 1, data packet 2, and data packet 3; the first data packet may also refer to data packet 1, data packet 2, and data packet 3.

It can be understood that, when the network device fails to receive the first data packet, the terminal device will resend the first data packet to the network device, and at the same time, the terminal device will determine the retransmission times of the first data packet. The number of retransmissions may be the number of times the terminal device repeatedly sends the first data packet to the network device after the terminal device fails to send the first data packet to the network device for the first time. Exemplarily, after the terminal device fails to send the first data packet to the network device, the terminal device sends the first data packet to the network device again. At this time, the number of retransmissions of the first data packet is 1; if the network device still does not After successfully receiving the first data packet, the terminal device will send the first data packet to the network device again, and at this time, the retransmission times of the first data packet are 2 times. Optionally, the number of retransmissions may refer to the total number of times the terminal device sends the first data packet to the network device. Exemplarily, the terminal device sends the first data packet to the network device, and the number of retransmissions of the first data packet at this time is 1; if the network device fails to receive the first data packet, the terminal device sends the first data packet to the network device again packet, the number of retransmissions of the first data packet at this time is 2 times. The preset number of times is any preset positive integer, such as 3 times, 10 times, etc.

When the number of retransmissions of the first data packet is greater than or equal to the preset number of times, the terminal device will resend a data bearer establishment request to the network device, that is, the terminal device will resend multiple data packets to the network device. In a specific example, the multiple data packets include data packet 1, data packet 2, and data packet 3, the first data packet refers to data packet 2, and the preset number of times is 2. The terminal device sends data packet 1, data packet 2, and data packet 3 to the network device. When the network device feeds back to the terminal device that it has failed to receive data packet 2, the terminal device sends data packet 2 to the network device again. Feedback to the terminal device that the data packet 2 was not successfully received, and the terminal device sends the data packet 2 to the network device again. If the network device feeds back to the terminal device that it failed to receive data packet 2 again, since the number of repetitions of data packet 2 is equal to the preset number of times, the terminal device will resend a data bearer establishment request to the network device, that is, the terminal device will resend the request to the network device Packet 1, Packet 2, and Packet 3.

In the communication method of the present application, when the terminal device sends a data bearer establishment request to the network device, if the number of retransmissions of the data packet included in the data bearer establishment request is greater than or equal to the preset number of times, the terminal device retransmits to the network The device sends a data bearer establishment request, so that when the number of retransmissions of the data packet is greater than or equal to the preset number of times, the terminal device will not initiate RRC reconstruction, which can reduce the impact on other data bearer transmissions and improve communication quality and communication quality. Efficiency, thereby improving user experience.

As an optional embodiment, before the terminal device resends the data bearer establishment request to the network device, the method 200 further includes: the terminal device determines that the first data packet has not been successfully sent; and the terminal device sends the first data packet to the network device again.

It should be understood that the terminal device determines that the first data packet is not sent successfully, and the terminal device sends the first data packet to the network device again are performed repeatedly. In addition, the terminal device will determine the retransmission times of the first data packet until the retransmission times of the first data packet are greater than or equal to the preset times. Optionally, after the terminal device determines that the first data packet has not been successfully sent, the method 200 further includes: determining the number of retransmissions of the first data packet; when the number of retransmissions of the first data packet is less than the preset number of times, the terminal device Send the first data packet to the network device again.

In a possible implementation, the method 200 further includes: the terminal device receives first information from the network device, the first information is used to indicate the information of the data packet successfully received by the network device; the terminal device determines that the first data packet has not been successfully sent , including: the terminal device determines, based on the first information, that the first data packet has not been successfully sent.

It should be understood that the data packets successfully received by the network device are one or more data packets among the multiple data packets. The information used to indicate the data packets successfully received by the network device may refer to any information capable of indicating the successfully received data packets by the network device. Exemplarily, assuming that multiple data packets include data packet 1, data packet 2 and data packet 3, and the data packets successfully received by the network device are data packet 1 and data packet 2, then the information indicating the data packets successfully received by the network device may be They are "01" and "02", where "01" is used to indicate data packet 1, and "02" is used to indicate data packet 2. Since the first information can indicate the data packet successfully received by the network device, and at the same time the terminal device can determine the data packet that the terminal device has sent to the network device, the terminal device sends the data packet successfully received by the network device and the terminal device to the network device By comparing the data packets, it is possible to determine the first data packet that was not successfully sent. Exemplarily, the multiple data packets include data packet 1, data packet 2, and data packet 3. After the terminal device sends data packet 1 and data packet 2 to the network device, it receives first information, and the first information includes "01" , "01" is used to indicate data packet 1, so the terminal device determines that data packet 1 was sent successfully. The terminal device can determine that the network device fails to receive the data packet 2 by comparing the data packet 1 fed back by the network device with the data packet 1 and the data packet 2 sent by the terminal device to the network device. In this way, the network device actively sends the first information to the terminal device, which facilitates the terminal device to determine the unsuccessfully sent data packets, and helps to improve communication efficiency.

It can be understood that the first information may be acknowledgment (acknowledge, ACK) information, where the ACK information is used to indicate that the network device has successfully received the data packet. The ACK information also includes information indicating the data packets successfully received by the network device. In this way, after receiving the ACK information, the terminal device can quickly determine the data packets successfully received by the network device according to the ACK information.

Optionally, the network device may periodically send the first information to the terminal device.

It should be understood that, during the process of the terminal device sending multiple data packets to the network device, the number of first information received by the terminal device from the network device may be one or more. Exemplarily, assuming that the network device sends the first information to the terminal device every 5 seconds, and it takes 12 seconds for the terminal device to send multiple data packets to the network device, the number of first messages received by the terminal device from the network device is 3. The three first pieces of information may be the same or different.

Optionally, after the network device successfully receives N data packets from the terminal device, it sends the first information to the terminal device, where N is a positive integer. It should be understood that N can be 1, 3, etc.

In a possible implementation manner, before the terminal device receives the first information from the network device, the method 200 further includes: the terminal device sends second information to the network device, and the second information is used to instruct the network device to feed back successfully received data information about the package.

It should be understood that the second information is request information sent by the terminal device to the network device for instructing the network device to feed back the first information. In this way, the terminal device can request the network device to feed back the first information to the terminal device at any time according to the requirement, so that the terminal device can obtain information about the data packets successfully received by the network device at any time.

Optionally, after sending M data packets to the network device, the terminal device sends the second information to the network device once, where M is a positive integer. Exemplarily, the multiple data packets include data packet 1, data packet 2, and data packet 3. If M is 2, the terminal device sends the second information to the network device after sending the data packet 1 and the data packet 2, The network device sends first information to the terminal device based on the second information, and the first information is used to indicate that the network device has successfully received the data packet 1 and the data packet 2; the terminal device determines the data packet 1 and the data packet 2 according to the first information In the case of successful sending, the terminal device sends data packet 3 to the network device. Since multiple data packets have been sent, the terminal device sends the second information to the network device again; the network device sends the second information to the terminal device according to the second information. First information, where the first information is used to indicate that the network device has successfully received the data packet 3 .

Optionally, after sending the multiple data packets to the network device, the terminal device sends the second information to the network device. Exemplarily, the multiple data packets include data packet 1, data packet 2, and data packet 3, and then the terminal device sends the second information to the network device after sending the data packet 1, data packet 2, and data packet 3 to the network device; The device sends first information to the terminal device based on the second information, and the first information is used to indicate that the network device successfully receives data packet 1, data packet 2, and data packet 3; if the network device fails to receive data packet 1, the The first information is used to indicate that the network device has successfully received the data packet 2 and the data packet 3 .

In a possible implementation manner, the method 200 further includes: the terminal device sends third information to the network device, the third information includes information indicating the data packet sent by the terminal device and information used to indicate that the network device feedback failed to receive The information of the data packet; the terminal device receives the fourth information from the network device, and the fourth information is used to indicate the information of the data packet that the network device has not successfully received; the terminal device determines that the first data packet has not been successfully sent, including: the terminal device based on The fourth information is to determine that the first data packet has not been sent successfully.

It should be understood that the data packets sent by the terminal device may refer to one or more data packets in the multiple data packets, or may refer to all the data packets in the multiple data packets. The network device can determine the data packet sent by the terminal device to the network device according to the third information. Based on the third information, the network device compares the data packets sent by the terminal device to the network device with the data packets successfully received by the network device, and can determine the data packets not successfully received by the network device. The network device sends the fourth information to the terminal device based on the identification information agreed with the terminal device and used to indicate each of the multiple data packets.

Optionally, the fourth information may be negative acknowledgment (negative acknowledgment, NACK) information, the NACK information is used to indicate that the network device has not successfully received the data packet, and at the same time, the NACK information includes data used to indicate that the network device has not successfully received information about the package.

It should be understood that the sequence numbers of the above-mentioned methods do not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic.

The communication method according to the embodiment of the present application is described in detail above with reference to FIG. 2 , and the communication device according to the embodiment of the present application is described in detail below with reference to FIG. 3 to FIG. 4 . The communication device includes corresponding modules or units for executing each part in the foregoing embodiments. The modules or units may be software, or hardware, or a combination of software and hardware. The following only briefly illustrates the communication device, and for the implementation details of the solution, reference may be made to the description of the foregoing method embodiments, which will not be repeated hereafter.

FIG. 3 is a schematic structural diagram of a communication device 300 provided in an embodiment of the present application. As shown in FIG. 3 , the device 300 includes: a first transceiver module 301 and a second transceiver module 302 .

In a possible implementation manner, the apparatus 300 is configured to implement the steps corresponding to the terminal device in the foregoing method 200 .

The first transceiver module 301 is configured to send a data bearer establishment request to a network device, where the data bearer establishment request includes a plurality of data packets;

The second transceiver module 302 is configured to resend the data bearer establishment request to the network device when the number of retransmissions of the first data packet among the multiple data packets is greater than or equal to the preset number of times.

Optionally, the apparatus 300 is a long term evolution LTE type terminal device, and the data bearer establishment request is a packet data network PDN establishment request.

Optionally, the apparatus 300 is a new wireless NR terminal device, and the data bearer establishment request is a PDU session establishment request.

Optionally, the apparatus 300 further includes a processing module configured to determine that the first data packet is not sent successfully; the first transceiving module 301 or the second transceiving module 302 is further configured to send the first data packet to the network device again.

Optionally, the first transceiver module 301 or the second transceiver module 302 is also configured to: receive first information from the network device, the first information is used to indicate information of the data packet successfully received by the network device; the processing module is specifically configured to: Based on the first information, it is determined that the first data packet has not been successfully sent.

Optionally, the first transceiving module 301 or the second transceiving module 302 is further configured to: send second information to the network device, where the second information is used to instruct the network device to feed back information about successfully received data packets.

Optionally, the first transceiver module 301 or the second transceiver module 302 is also configured to: send third information to the network device, the third information includes information for indicating the data packet sent by the apparatus 300 and for instructing the network device to feedback The information of the data packet not successfully received; receiving the fourth information from the network device, the fourth information is used to indicate the information of the data packet not successfully received by the network device; the processing module is specifically used for: the terminal device determines the fourth information based on the fourth information A packet was not sent successfully.

It should be understood that the apparatus 300 here is embodied in the form of functional modules. The term "module" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality. In an optional example, those skilled in the art can understand that the apparatus 300 may specifically be the terminal device in the above-mentioned embodiment, and the apparatus 300 may be used to execute various processes and/or steps corresponding to the terminal device in the above-mentioned method embodiment , to avoid repetition, it will not be repeated here.

The above-mentioned apparatus 300 has the function of implementing the corresponding steps executed by the terminal device in the above-mentioned method; the above-mentioned functions can be realized by hardware, or can be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In the embodiment of the present application, the device 300 in FIG. 3 may also be a chip, such as an SOC. Correspondingly, the first transceiver module 301 may be a transceiver circuit of the chip, which is not limited here.

FIG. 4 is a schematic structural diagram of a communication device 400 provided by an embodiment of the present application. The apparatus 400 includes a processor 401 , a transceiver 402 and a memory 403 . Wherein, the processor 401, the transceiver 402 and the memory 403 communicate with each other through an internal connection path, the memory 403 is used to store instructions, and the processor 401 is used to execute the instructions stored in the memory 403 to control the transceiver 402 to send signals and /or to receive a signal.

It should be understood that the apparatus 400 may specifically be the terminal device in the foregoing embodiments, and may be configured to execute various steps and/or processes corresponding to the terminal device in the foregoing method embodiments. Optionally, the memory 403 may include read-only memory and random-access memory, and provides instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. For example, the memory may also store device type information. The processor 401 may be used to execute instructions stored in the memory, and when the processor 401 executes the instructions stored in the memory, the processor 401 is used to execute various steps and/or processes of the above method embodiments. The transceiver 402 may include a transmitter and a receiver, and the transmitter may be used to implement various steps and/or processes corresponding to the above-mentioned transceiver for performing the sending action, and the receiver may be used to implement the corresponding application of the above-mentioned transceiver. Various steps and/or processes for performing receiving actions.

It should be understood that, in the embodiment of the present application, the processor may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC) , field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, and the like.

In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor executes the instructions in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, no detailed description is given here.

The present application also provides a computer-readable storage medium, where the computer-readable storage medium is used to store a computer program, and the computer program is used to implement the methods shown in the above method embodiments.

The present application also provides a computer program product. The computer program product includes a computer program (also called code, or instruction). When the computer program is run on a computer, the computer can execute the above-mentioned methods shown in the above method embodiments. method.

Those skilled in the art can appreciate that the modules and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device, and module can refer to the corresponding process in the foregoing method embodiment, and details are not repeated here.

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

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

In addition, each functional module in each embodiment of the present application may be integrated into one processing module, each module may exist separately physically, or two or more modules may be integrated into one module.

If the functions are realized in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk, and various media that can store program codes. .

The above is only the specific implementation of the application, but the protection scope of the embodiment of the application is not limited thereto, and any skilled person familiar with the technical field can easily think of changes within the technical scope disclosed in the embodiment of the application Or replacement, should be covered within the scope of protection of the embodiments of the present application. Therefore, the scope of protection of the embodiments of the present application should be based on the scope of protection of the claims.

Claims (17)

1. A method of communication, comprising:

the method comprises the steps that terminal equipment sends a data bearing establishment request to network equipment, wherein the data bearing establishment request comprises a plurality of data packets;

and under the condition that the retransmission times of the first data packet in the plurality of data packets are greater than or equal to the preset times, the terminal equipment sends the data bearer establishment request to the network equipment again.

2. The method of claim 1, wherein the terminal device is a long term evolution, LTE, type terminal device, and wherein the data bearer establishment request is a packet data network, PDN, establishment request.

3. The method of claim 1, wherein the terminal device is a new wireless NR type terminal device and wherein the data bearer setup request is a protocol data unit, PDU, session setup request.

4. The method according to any of claims 1 to 3, wherein before the terminal device resends the data bearer establishment request to the network device, the method further comprises:

the terminal equipment determines that the first data packet is not successfully transmitted;

and the terminal equipment sends the first data packet to the network equipment again.

5. The method of claim 4, further comprising:

the terminal equipment receives first information from the network equipment, wherein the first information is used for indicating information of a data packet successfully received by the network equipment;

the determining, by the terminal device, that the first data packet is not successfully transmitted includes:

and the terminal equipment determines that the first data packet is not successfully transmitted based on the first information.

6. The method of claim 5, wherein before the terminal device receives the first information from the network device, the method further comprises:

and the terminal equipment sends second information to the network equipment, wherein the second information is used for indicating the network equipment to feed back the information of the successfully received data packet.

7. The method of claim 4, further comprising:

the terminal device sends third information to the network device, wherein the third information comprises information used for indicating a data packet sent by the terminal device and information used for indicating the network device to feed back the data packet which is not successfully received;

the terminal equipment receives fourth information from the network equipment, wherein the fourth information is used for indicating information of data packets which are not successfully received by the network equipment;

the determining, by the terminal device, that the first data packet is not successfully transmitted includes:

and the terminal equipment determines that the first data packet is not successfully transmitted based on the fourth information.

8. A communications apparatus, comprising:

the first transceiver module is used for sending a data bearer establishment request to the network equipment, wherein the data bearer establishment request comprises a plurality of data packets;

and a second transceiver module, configured to resend the data bearer establishment request to the network device when the retransmission time of a first data packet in the multiple data packets is greater than or equal to a preset time.

9. The apparatus of claim 8, wherein the apparatus is a long term evolution, LTE, type terminal device, and wherein the data bearer establishment request is a packet data network, PDN, establishment request.

10. The apparatus of claim 8, wherein the apparatus is a new wireless NR type terminal device and wherein the data bearer setup request is a protocol data unit, PDU, session setup request.

11. The apparatus of any one of claims 8 to 10, further comprising:

a processing module for determining that the first data packet was not successfully transmitted;

the first transceiver module or the second transceiver module is further configured to:

and sending the first data packet to the network equipment again.

12. The apparatus of claim 11, wherein the first transceiver module or the second transceiver module is further configured to:

receiving first information from the network equipment, wherein the first information is used for indicating information of data packets successfully received by the network equipment;

the processing module is specifically configured to:

determining, based on the first information, that the first data packet was not successfully transmitted.

13. The apparatus of claim 12, wherein the first transceiver module or the second transceiver module is further configured to:

and sending second information to the network equipment, wherein the second information is used for indicating the network equipment to feed back the information of the successfully received data packet.

14. The apparatus of claim 11, wherein the first transceiver module or the second transceiver module is further configured to:

sending third information to the network equipment, wherein the third information comprises information used for indicating the data packets sent by the device and information used for indicating the network equipment to feed back the data packets which are not successfully received;

receiving fourth information from the network device, wherein the fourth information is used for indicating information of data packets which are not successfully received by the network device;

the processing module is specifically configured to:

determining that the first data packet was not successfully transmitted based on the fourth information.

15. A communications apparatus, comprising: a processor coupled with a memory for storing a computer program that, when invoked by the processor, causes the apparatus to perform the method of any of claims 1 to 7.

16. A computer-readable storage medium for storing a computer program comprising instructions for implementing the method of any one of claims 1 to 7.

17. A computer program product, characterized in that computer program code is included in the computer program product, which, when run on a computer, causes the computer to implement the method according to any one of claims 1 to 7.

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