CN112470532A

CN112470532A - Method and terminal equipment for sidestream communication

Info

Publication number: CN112470532A
Application number: CN201880095453.3A
Authority: CN
Inventors: 卢前溪; 赵振山; 林晖闵
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2021-03-09
Anticipated expiration: 2038-11-30
Also published as: CN112470532B; WO2020107428A1

Abstract

The embodiment of the application discloses a method and terminal equipment for sideline communication, wherein the method comprises the following steps: the first terminal equipment transmits the side-line data through the first communication system and/or the second communication system. According to the method and the terminal equipment, when the terminal equipment has the sending capability of multiple communication systems, the terminal equipment can flexibly select at least one communication system to send the sidestream data.

Description

Method and terminal equipment for sidestream communication

Technical Field

The embodiment of the application relates to the field of communication, in particular to a method and terminal equipment for sideline communication.

Background

The car networking system is a Sidelink (SL) transmission technology based on Long Term Evolution (LTE) -Device-to-Device (D2D), and is different from a mode in which communication data is received or transmitted through a base station in a conventional LTE system, and the car networking system adopts a mode in which terminal-to-terminal direct communication, so that the car networking system has higher spectral efficiency and lower transmission delay.

At present, in the car networking system, a terminal may have the transmission capability of a plurality of communication systems, and how the terminal uses the plurality of communication systems to transmit sidestream data is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a sideline communication method and terminal equipment, and the problem of how to send sideline data when the terminal equipment has the sending capability of a plurality of communication systems can be solved.

In a first aspect, a method for sidestream communication is provided, the method comprising: the first terminal equipment transmits the side-line data through the first communication system and/or the second communication system.

In a second aspect, a method of sidestream communication is provided, the method comprising: and the second terminal equipment receives the side-line data through the first communication system and/or the second communication system.

In a third aspect, a terminal device is provided, configured to perform the method in the first aspect or each implementation manner thereof.

Specifically, the terminal device includes a functional module for executing the method in the first aspect or each implementation manner thereof.

In a fourth aspect, a terminal device is provided, configured to perform the method in the second aspect or each implementation manner thereof.

In particular, the terminal device comprises functional modules for performing the methods of the second aspect or its implementations.

In a fifth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the first aspect to the second aspect or each implementation manner thereof.

In a sixth aspect, a chip is provided for implementing the method in any one of the first to second aspects or implementations thereof.

Specifically, the chip includes: a processor configured to call and run the computer program from the memory, so that the device on which the chip is installed performs the method in any one of the first aspect to the second aspect or the implementation manners thereof.

In a seventh aspect, a computer-readable storage medium is provided for storing a computer program, which causes a computer to execute the method of any one of the first to second aspects or implementations thereof.

In an eighth aspect, there is provided a computer program product comprising computer program instructions to cause a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a ninth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.

Through the technical scheme, when the terminal equipment has the sending capability of multiple communication systems, the terminal equipment can flexibly select to send the sidestream data through at least one communication system.

Drawings

Fig. 1 is a schematic diagram of a sidestream communication system provided in an embodiment of the present application.

Fig. 2 is a schematic diagram of a sidestream communication system provided in an embodiment of the present application.

Fig. 3 is a schematic block diagram of a method of sidestream communication provided by an embodiment of the present application.

Fig. 4 is a structural block diagram of a method of sidestream communication in an embodiment of the present application.

Fig. 5 is another structural block diagram of a method of sidestream communication in the embodiment of the present application.

Fig. 6 is another schematic block diagram of a method of sidestream communication provided by an embodiment of the present application.

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

Fig. 8 is another schematic block diagram of a terminal device provided in an embodiment of the present application.

Fig. 9 is another schematic block diagram of a terminal device provided in an embodiment of the present application.

Fig. 10 is a schematic block diagram of a chip provided in an embodiment of the present application.

Fig. 11 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be understood that the technical solutions of the embodiments of the present application may be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a long term evolution LTE System, a LTE Frequency Division Duplex (FDD) System, a LTE Time Division Duplex (TDD), a Universal Mobile telecommunications System (Universal Mobile telecommunications System, UMTS), a UMTS Worldwide Interoperability for Microwave Access (WiMAX) communication System, a New Radio (New Radio, NR), a future 5G System, and the like.

In particular, the technical solution of the embodiment of the present application may be applied to various communication systems based on a non-orthogonal Multiple Access technology, such as a Sparse Code Multiple Access (SCMA) system, a Low Density Signature (LDS) system, and the like, and certainly the SCMA system and the LDS system may also be called other names in the communication field; further, the technical solution of the embodiment of the present application may be applied to a Multi-Carrier transmission system using a non-Orthogonal multiple access technology, for example, an Orthogonal Frequency Division Multiplexing (OFDM) using a non-Orthogonal multiple access technology, a Filter Bank Multi-Carrier (FBMC), a General Frequency Division Multiplexing (GFDM), a Filtered Orthogonal Frequency Division Multiplexing (F-OFDM) system, and the like.

A terminal device in the embodiments of the present application may refer to a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, and the embodiments of the present application are not limited thereto.

The Network device in this embodiment may be a device for communicating with a terminal device, where the Network device may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB, NB) in a WCDMA system, an evolved node b (eNB or eNodeB) in an LTE system, a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or a relay Station, an Access point, a vehicle-mounted device, a wearable device, a Network device in a future 5G Network, or a Network device in a future evolved PLMN Network, and the like, and the embodiment of the present application is not limited.

Fig. 1 and 2 are schematic diagrams of an application scenario of the embodiment of the present application. Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the wireless communication system may include a plurality of network devices and each network device may include other numbers of terminal devices within a coverage area, which is not limited in this embodiment of the present application. In addition, the wireless communication system may further include other Network entities such as a Mobility Management Entity (MME), a Serving Gateway (S-GW), a Packet Data Network Gateway (P-GW), and the like, but the embodiment of the present invention is not limited thereto.

Specifically, the terminal device 20 and the terminal device 30 may communicate in the D2D communication mode, and when the D2D communication is performed, the terminal device 20 and the terminal device 30 directly communicate via a D2D link, i.e., a Sidelink (SL). For example, as shown in fig. 1 or fig. 2, terminal device 20 and terminal device 30 communicate directly via a sidelink. In fig. 1, terminal device 20 and terminal device 30 communicate via a sidelink, the transmission resources of which are allocated by the network device; in fig. 2, terminal device 20 and terminal device 30 communicate via a sidelink, and their transmission resources are selected by the terminal device autonomously without the need for the network device to allocate transmission resources.

The D2D communication mode may be applied to Vehicle-to-Vehicle (V2V) communication or Vehicle-to-other device (V2X) communication. In V2X communication, X may refer to any device with wireless receiving and transmitting capability, such as but not limited to a slow moving wireless device, a fast moving vehicle-mounted device, or a network control node with wireless transmitting and receiving capability. It should be understood that the embodiment of the present application is mainly applied to the scenario of V2X communication, but may also be applied to any other D2D communication scenario, and the embodiment of the present application is not limited in this respect.

In Release-14 of the 3GPP protocol, two transmission modes, i.e., transmission mode 3(mode 3) and transmission mode 4(mode 4), are defined. The transmission resource of the terminal equipment using the transmission mode 3 is allocated by the base station, and the terminal equipment transmits data on a sidelink according to the resource allocated by the base station; the base station may allocate resources for single transmission to the terminal device, or may allocate resources for semi-static transmission to the terminal device. If the terminal equipment using the transmission mode 4 has the interception capability, adopting an interception (sending) and reservation (reservation) mode to transmit data, and if the terminal equipment does not have the interception capability, randomly selecting transmission resources in the resource pool. The terminal equipment with the interception capability acquires an available resource set in a resource pool in an interception mode, and the terminal equipment randomly selects one resource from the set for data transmission. Because the service in the car networking system has a periodic characteristic, the terminal device usually adopts a semi-static transmission mode, that is, after the terminal device selects one transmission resource, the resource is continuously used in a plurality of transmission cycles, so that the probability of resource reselection and resource conflict is reduced. The terminal device can carry the information of the reserved secondary transmission resource in the control information transmitted this time, so that other terminal devices can judge whether the resource is reserved and used by the terminal device by detecting the control information of the terminal device, and the purpose of reducing resource conflict is achieved.

In Rel-16, the V2X technology is introduced into NR, and for LTE and NR dual-mode UEs, the LTE-V2X and NR-V2X transmission capabilities are both available, and how are the UEs perform the transmission of sidelink data?

This document is intended to solve the above problems. As shown in fig. 3, an embodiment of the present application provides a method 100 for sidestream communication, where a first terminal device in the method 100 may be any terminal device in fig. 1 or fig. 2 as a transmitting end, and the method 100 includes some or all of the following:

and S110, the first terminal equipment transmits the side-line data through the first communication system and/or the second communication system.

It should be noted that the first terminal device has the transmission capability of multiple communication systems, and here, two communication systems are taken as an example, but the embodiment of the present application is not limited thereto. The communication system may be the GSM system, GPRS system, LTE system, NR system, etc. as described above. For convenience of description, the first communication system is an LTE system, and the second communication system is an NR system. Those skilled in the art will appreciate that it is not intended to be limiting.

That is, although the first terminal device has the transmission capability of the LTE system and the NR system, the first terminal device may transmit the sidestream data through the LTE system, the first terminal device may transmit the sidestream data through the NR system, and the first terminal device may transmit the sidestream data through both the LTE system and the NR system.

If the first terminal device selects to send sideline Data to the second terminal device through the LTE system, an LTE Packet Data Convergence Protocol (PDCP) entity of the first terminal device may submit the Data to an LTE Radio Link Control (RLC) entity, and then the LTE RLC entity submits the Data to an LTE Media Access Control (MAC) entity, the LTE MAC entity sends the Data to an LTE MAC entity of the second terminal device, and the LTE MAC entity of the second terminal device then sequentially submits the Data from the LTE RLC entity to the LTE PDCP entity.

If the first terminal equipment selects to send the sidestream data to the second terminal equipment through the NR system, the NR PDCP entity of the first terminal equipment can deliver the data to the NR RLC entity, and then the NR RLC entity delivers the data to the NR MAC entity, the NR MAC entity sends the data to the NR MAC entity of the second terminal equipment, and the NR MAC entity of the second terminal equipment sequentially delivers the data to the NR PDCP entity from the NR RLC entity.

When the first terminal device selects to use the LTE PDCP entity to transmit the sideline data, the LTE PDCP entity may also deliver the data to the NR RLC entity, and the NR PLC entity may deliver the data to the NR MAC entity. Similarly, when the first terminal device selects to use the NR PDCP entity to transmit the sideline data, the NR PDCP entity may also deliver the data to the LTE RLC entity, and the LTE RLC entity may further deliver the data to the LTE MAC entity.

If the first terminal equipment selects to transmit the sideline data to the second terminal equipment through the LTE system and the NR system at the same time, the sideline data can be transmitted through three modes shown in fig. 4 and fig. 5.

As shown in the right diagram of fig. 4, the first terminal device may select to transmit the sidelink data using an LTE PDCP entity, the LTE PDCP entity may deliver the data to an LTE RLC entity and an NR RLC entity, respectively, and the LTE RLC entity may deliver the data received from the LTE PDCP entity to an LTE MAC entity, and the NR RLC entity may deliver the data received from the LTE PDCP entity to an NR MAC entity. The LTE MAC entity sends the data to the LTE MAC entity of the second terminal device, and the LTE MAC entity of the second terminal device then delivers the data from the LTE RLC entity to the LTE PDCP entity in sequence. The NR MAC entity transmits the data to the NR MAC entity of the second terminal device, and the NR MAC entity of the second terminal device sequentially delivers the data from the NR RLC entity to the LTE PDCP entity.

As shown in the left diagram of fig. 4, the first terminal device may also select to use the NR PDCP entity to transmit the sideline data, the NR PDCP entity may deliver the data to the LTE RLC entity and the NR RLC entity, respectively, and then the LTE RLC entity may deliver the data received from the NR PDCP entity to the LTE MAC entity, and the NR RLC entity may deliver the data received from the NR PDCP entity to the NR MAC entity. The LTE MAC entity sends the data to the LTE MAC entity of the second terminal device, and the LTE MAC entity of the second terminal device then delivers the data from the LTE RLC entity to the NR PDCP entity in sequence. The NR MAC entity transmits the data to the NR MAC entity of the second terminal device, and the NR MAC entity of the second terminal device sequentially delivers the data from the NR RLC entity to the NR PDCP entity.

As shown in fig. 5, the first terminal device may choose to transmit the sidelink data using the LTE PDCP entity and the NR PDCP entity. Specifically, the LTE PDCP entity may deliver data to the LTE RLC entity, and then the LTE RLC entity may deliver the data received from the LTE PDCP entity to the LTE MAC entity, and the LTE MAC entity may send the received data to the LTE MAC entity of the second terminal device, and then the LTE MAC entity of the second terminal device sequentially delivers the data from the LTE RLC entity to the LTE PDCP entity. The NR PDCP entity may deliver the data to the NR RLC entity, and the NR RLC entity may deliver the data received from the NR PDCP entity to the NR MAC entity, and the NR MAC entity may send the received data to the NR MAC entity of the second terminal device, and then the NR MAC entity of the second terminal device sequentially delivers the data from the NR RLC entity to the NR PDCP entity.

Optionally, the first terminal device may further select an NR PDCP entity to transmit the sidelink data, and after the data is delivered from the NR PDCP entity to the NR RLC entity, the NR RLC entity delivers the data to the LTE MAC entity and the NR MAC entity, respectively. And after receiving the data, the LTE MAC entity and the NR MAC entity of the second terminal device respectively deliver the data to the NR RLC entity, and the NR RLC entity may deliver the data to the NR PDCP entity.

Optionally, the second terminal device may also select the LTE PDCP entity to send the sidelink data, and after the data is delivered from the LTE PDCP entity to the LTE RLC entity, the LTE RLC entity delivers the data to the LTE MAC entity and the NR MAC entity, respectively. And after the LTE MAC entity and the NR MAC entity of the second terminal device receive the data, the data are both delivered to the LTE RLC entity, and the LTE RLC entity may deliver the data to the LTE PDCP entity.

It should be understood that when the first terminal device selects to transmit the sidestream data through the LTE system and the NR system, the sidestream data can be understood to be transmitted through both communication systems regardless of which protocol layer the data is separately delivered from.

Optionally, if the first terminal device selects the LTE PDCP entity or the NR PDCP entity to send sideline data, the first terminal device may perform a compression and/or ciphering function, and then perform a data copying function; if the first terminal device selects the LTE PDCP entity and the NR PDCP entity to transmit the sideline data, the first terminal device may first perform a data copying function and then perform a compression and/or ciphering function.

For example, when the first terminal device selects to use the LTE PDCP entity to transmit the sideline data, the LTE PDCP entity may first compress and/or encrypt the sideline data to be transmitted, and if the LTE PDCP entity is to respectively deliver data to the LTE RLC entity and the NR RLC entity, the LTE PDCP entity may copy the data subjected to compression and/or encryption and may respectively deliver the copied data to the LTE RLC entity and the NR RLC entity. For the second terminal device, after the LTE RLC entity and the NR RLC entity of the second terminal device receive the data sent by the first terminal device, the LTE RLC entity and the NR RLC entity both deliver the data to the LTE PDCP entity, and the LTE PDCP entity may decrypt and/or decompress the received data.

For another example, when the first terminal device selects to use the NR PDCP entity to transmit the sideline data, the NR PDCP entity may first compress and/or encrypt the sideline data to be transmitted, and if the NR PDCP entity is to respectively deliver data to the LTE RLC entity and the NR RLC entity, the NR PDCP entity may copy the compressed and/or encrypted data and may deliver the copied data to the LTE RLC entity and the NR RLC entity. For the second terminal device, after the LTE RLC entity and the NR RLC entity of the second terminal device receive the data sent by the first terminal device, the LTE RLC entity and the NR RLC entity both deliver the data to the NR PDCP entity, and the NR PDCP entity may decrypt and/or decompress the received data.

For another example, when the first terminal device selects to use the LTE PDCP entity and the NR PDCP entity to transmit the sideline data, the first terminal device may copy the data to be transmitted first, for example, the first terminal device may copy the data to be transmitted by using the LTE PDCP entity or the NR PDCP entity, and then the LTE PDCP entity and the NR PDCP entity respectively compress and/or encrypt the copied data. The LTE PDCP entity and the NR PDCP entity may transmit respective compressed and/or ciphered data to respective corresponding RLC entities. After the LTE PDCP entity and the NR PDCP entity of the second terminal device receive the data sent by the first terminal device, the received data may be decompressed and/or decrypted, respectively.

It should be noted that the data sent to the LTE RLC entity and the NR RLC entity may be the same data, i.e. duplicated data, or may be different data packets belonging to the same service or the same data flow. For a receiving end, that is, for a second terminal device in this document, if data received by an LTE MAC entity and data received by an NR MAC entity are the same data, the second terminal device needs to perform duplicate packet processing on the data received by the LTE MAC entity and the data received by the NR MAC entity; if the data received by the LTE MAC entity and the data received by the NR MAC entity belong to the same service or are the same as a data stream, the second terminal device needs to perform reordering processing on the data received by the LTE MAC entity and the data received by the NR MAC entity.

Those skilled in the art understand that, for a transmitting end, a Protocol Data Unit (PDU) of an upper layer is a Service Data Unit (SDU) of a lower layer. And SDUs received by each layer may be encapsulated to form PDUs.

In the case of a MAC PDU, one MAC PDU may include one MAC header and one or more MAC sub-PDUs. In this embodiment, the LTE MAC entity of the first terminal device may encapsulate the copied SDU, i.e. the sidestream data mentioned herein, to form a first PDU, and the NR MAC entity of the first terminal device may encapsulate the copied SDU to form a second PDU, or vice versa.

Optionally, the destination addresses and/or source addresses used by the first PDU and the second PDU may be the same, so that after the second terminal device receives the first PDU and the second PDU, it may be determined that the first PDU and the second PDU belong to associated data, and then the second terminal device may perform corresponding processing on the first PDU and the second PDU.

Further, LTE logical channels and NR logical channels may be mapped. For example, assume that LTE logical channels are 1, 2, 3, 4, and NR logical channels are a, B, C, and D, wherein the mapping relationship between the two can be as shown in table 1.

TABLE 1

LTE logical channel	NR logical channel
1	A
2	B
3	C
4	D

The second terminal device may obtain the mapping relationship between the LTE logical channel and the NR logical channel from a pre-stored instruction or an instruction from the first terminal device. As shown in table 1, assuming that the first PDU received by the second terminal device corresponds to LTE logical channel 1, and the second PDU received by the second terminal device corresponds to NR logical channel a, the second terminal device may consider that the first PDU and the second PDU are associated data, that is, may consider that the first PDU and the second PDU include at least one same upper layer service. For example, the first PDU and the second PDU may be considered to comprise the same data, i.e. duplicated data. As another example, the first PDU and the second PDU may be considered to be different packets belonging to the same service or the same data flow. For the former, the second terminal device may perform duplicate packet processing; for the latter, the second terminal device may perform reordering.

Similarly, as shown in table 1, assuming that the first PDU received by the second terminal device corresponds to LTE logical channel 2, and the second PDU received by the second terminal device corresponds to NR logical channel D, the second terminal device may consider that the first PDU and the second PDU are not associated data, and may process the two data separately.

Optionally, the mapping relationship between the LTE logical channel and the NR logical channel may be indicated by at least one of the following information: the source address and the destination address, a Logical Channel Identifier (LCID), an RLC header, and a PDCP header. Optionally, the MAC PDU sent by the MAC entity of the first terminal device to the second terminal device may carry the above-mentioned various information. After the second terminal device obtains any information from the received LTE MAC PDU and NR MAC PDU, it may determine whether the two belong to associated data through a mapping relationship.

It should be understood that, in the embodiments of the present application, the terminal device has the transmission capabilities of two communication systems, and is described in detail by taking the LTE system and the NR system as an example, and it is also mentioned above that the terminal device may have the transmission capabilities of multiple communication systems, and is not limited to the LTE system and the NR system, and may be, for example, a future communication system.

Fig. 6 is a schematic block diagram of a method 200 for sidestream communication according to an embodiment of the present disclosure. The method may be executed by a terminal device serving as a receiving end in fig. 1 or fig. 2, as shown in fig. 6, the method 200 includes the following parts or all:

and S210, the second terminal equipment receives the side-line data through the first communication system and/or the second communication system.

Optionally, in this embodiment of the application, the receiving, by the second terminal device, the peer-to-peer data through the first communication system and the second communication system includes: the second terminal device receives, at a first protocol layer of the first communication system or the first protocol layer of the second communication system, sidestream data submitted by a second protocol layer of the first communication system and sidestream data submitted by the second protocol layer of the second communication system, where the first protocol layer is a previous layer of the second protocol layer.

Optionally, in an embodiment of the present application, the method further includes: the second terminal device decompresses and/or decrypts the sidestream data received from the second protocol layer of the first communication system and the sidestream data received from the second protocol layer of the second communication system at the first protocol layer of the first communication system or the first protocol layer of the second communication system.

Optionally, in this embodiment of the application, the receiving, by the second terminal device, the peer-to-peer data through the first communication system and the second communication system includes: the second terminal device receives, at a first protocol layer of the first communication system, sidestream data submitted by a second protocol layer of the first communication system, and receives, at a first protocol layer of the second communication system, sidestream data submitted by the second protocol layer of the second communication system, where the first protocol layer is a layer above the second protocol layer.

Optionally, in an embodiment of the present application, the method further includes: the second terminal device decompresses and/or decrypts the sidestream data received from the second protocol layer of the first communication system at the first protocol layer of the first communication system, and decompresses and/or decrypts the sidestream data received from the second protocol layer of the second communication system at the first protocol layer of the second communication system.

Optionally, in this embodiment of the present application, the first protocol layer is a packet data convergence protocol PDCP layer, and the second protocol layer is a radio link control RLC layer.

Optionally, in an embodiment of the present application, the method further includes: the second terminal device determines that the sidestream data received at the media access control, MAC, layer of the first communication system and the sidestream data received at the MAC layer of the second communication system include at least one same upper layer service.

Optionally, in this embodiment of the present application, the determining, by the second terminal device, that the sidestream data received at the MAC layer of the first communication system and the sidestream data received at the MAC layer of the second communication system include at least one same upper layer service includes: and the second terminal equipment determines that the sidestream data received at the MAC layer of the first communication system and the sidestream data received at the MAC layer of the second communication system comprise at least one same upper layer service according to the mapping relation between the logical channel of the first communication system and the logical channel of the second communication system.

Optionally, in this embodiment of the present application, a mapping relationship between the logical channel of the first communication system and the logical channel of the second communication system is indicated by at least one of the following information: the destination address of the side line data, the source address of the side line data, the logical channel identification LCID, the RLC message header and the PDCP message header.

Optionally, in this embodiment of the present application, the first communication system is a long term evolution LTE, and the second communication system is a new wireless NR.

It should be understood that the interaction between the second terminal device and the first terminal device described by the second terminal device and the related characteristics, functions, etc. correspond to the related characteristics, functions of the first terminal device. That is, what message the second terminal device sends to the first terminal device, the first terminal device receives the corresponding message from the second terminal device.

It should also be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The method of sidestream communication according to the embodiment of the present application is described above in detail, and the apparatus of sidestream communication according to the embodiment of the present application will be described below with reference to fig. 7 to 9, and the technical features described in the method embodiment are applicable to the following apparatus embodiments.

Fig. 7 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. The terminal device 300 is a first terminal device, and as shown in fig. 7, the terminal device 300 includes:

the transceiving unit 310 is configured to transmit the sidestream data through the first communication system and/or the second communication system.

Optionally, in this embodiment of the present application, the transceiver unit is specifically configured to: and sending the sidestream data to a second protocol layer of the first communication system and a second protocol layer of the second communication system at a first protocol layer of the first communication system or the first protocol layer of the second communication system, wherein the first protocol layer is a layer above the second protocol layer.

Optionally, in this embodiment of the present application, the transceiver unit is specifically configured to: and sending the sidelink data to a second protocol layer of the first communication system at a first protocol layer of the first communication system, and sending the sidelink data to a second protocol layer of the second communication system at the first protocol layer of the second communication system, wherein the first protocol layer is a layer higher than the second protocol layer.

Optionally, in this embodiment of the present application, the terminal device further includes: a processing unit, configured to encrypt and/or compress, at a first protocol layer of the first communication system or a first protocol layer of the second communication system, sideline data sent to a second protocol layer of the first communication system and a second protocol layer of the second communication system.

Optionally, in an embodiment of the present application, the processing unit is further configured to: the copy data function is performed at a first protocol layer of the first communication system or a first protocol layer of the second communication system.

Optionally, in an embodiment of the present application, the processing unit is further configured to: the method comprises the steps of encrypting and/or compressing sideline data sent to a second protocol layer of the first communication system at a first protocol layer of the first communication system, and encrypting and/or compressing sideline data sent to the second protocol layer of the second communication system at the first protocol layer of the second communication system.

Optionally, in an embodiment of the present application, the processing unit is further configured to: the method comprises the steps of encrypting and/or compressing sideline data sent to a second protocol layer of the first communication system by a first protocol layer of the first communication system, and executing a data copying function before encrypting and/or compressing the sideline data sent to the second protocol layer of the second communication system by the first protocol layer of the second communication system.

Optionally, in an embodiment of the present application, the processing unit is specifically configured to: the copy data function is performed at a first protocol layer of the first communication system or at a first protocol layer of the second communication system.

Optionally, in this embodiment of the present application, the terminal device further includes: a processing unit, configured to encapsulate, at a media access control MAC layer of the first communication system, sideline data sent by an RLC layer of the first communication system, so as to form a first protocol data unit PDU; and encapsulating the sidelink data issued by the RLC layer of the second communication system on the MAC layer of the second communication system to form a second PDU.

Optionally, in this embodiment of the present application, the destination address of the first PDU and the source address of the second PDU are the same or the source addresses are the same.

It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the first terminal device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the terminal device 300 are respectively for implementing the corresponding flow of the first terminal device in the method of fig. 3, and are not described herein again for brevity.

Fig. 8 shows a schematic block diagram of a terminal device 400 of an embodiment of the present application. The terminal device 400 is a second terminal device, as shown in fig. 8, the terminal device 400 includes:

the transceiving unit 410 is configured to receive peer-to-peer data through the first communication system and/or the second communication system.

Optionally, in this embodiment of the present application, the transceiver unit is specifically configured to: and receiving, at a first protocol layer of the first communication system or the first protocol layer of the second communication system, sidestream data submitted by a second protocol layer of the first communication system and sidestream data submitted by the second protocol layer of the second communication system, where the first protocol layer is a layer above the second protocol layer.

Optionally, in this embodiment of the present application, the terminal device further includes: a processing unit, configured to decompress and/or decrypt, at a first protocol layer of the first communication system or a first protocol layer of the second communication system, the sideline data received from a second protocol layer of the first communication system and the sideline data received from a second protocol layer of the second communication system.

Optionally, in this embodiment of the present application, the transceiver unit is specifically configured to: the method comprises the steps of receiving sidestream data submitted by a second protocol layer of the first communication system at a first protocol layer of the first communication system, and receiving sidestream data submitted by the second protocol layer of the second communication system at the first protocol layer of the second communication system, wherein the first protocol layer is a layer above the second protocol layer.

Optionally, in this embodiment of the present application, the terminal device further includes: a processing unit for decompressing and/or decrypting at a first protocol layer of the first communication system the sidestream data received from a second protocol layer of the first communication system and decompressing and/or decrypting at a first protocol layer of the second communication system the sidestream data received from a second protocol layer of the second communication system.

Optionally, in this embodiment of the present application, the terminal device further includes: a processing unit, configured to determine that the sidestream data received at the MAC layer of the first communication system and the sidestream data received at the MAC layer of the second communication system include at least one same upper layer service.

Optionally, in an embodiment of the present application, the processing unit is specifically configured to: and determining that the sidestream data received at the MAC layer of the first communication system and the sidestream data received at the MAC layer of the second communication system comprise at least one same upper layer service according to the mapping relation between the logical channel of the first communication system and the logical channel of the second communication system.

It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to a second terminal device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing a corresponding flow of the second terminal device in the method of fig. 6, and are not described herein again for brevity.

As shown in fig. 9, the present embodiment also provides a terminal device 500, where the terminal device 500 may be the terminal device 300 in fig. 6, which can be used to execute the content of the first terminal device corresponding to the method 200 in fig. 2. The terminal device 500 may also be the terminal device 400 of fig. 7, which can be used to execute the content of a second terminal device corresponding to the method 200 of fig. 6. The terminal device 500 shown in fig. 9 comprises a processor 510, and the processor 510 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 9, the terminal device 500 may further include a memory 520. From the memory 520, the processor 510 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 520 may be a separate device from the processor 510, or may be integrated into the processor 510.

Optionally, as shown in fig. 9, the terminal device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 530 may include a transmitter and a receiver, among others. The transceiver 530 may further include one or more antennas.

Optionally, the terminal device 500 may be a terminal device in this embodiment, and the terminal device 500 may implement a corresponding process implemented by the first terminal device in each method in this embodiment, which is not described herein again for brevity.

In a specific embodiment, the processing unit in the terminal device 300/terminal device 400 may be implemented by the processor 510 in fig. 9. The transceiving unit in the terminal device 300/terminal device 400 may be implemented by the transceiver 530 in fig. 9.

Fig. 10 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 600 shown in fig. 10 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 10, the chip 600 may further include a memory 620. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present application.

The memory 620 may be a separate device from the processor 610, or may be integrated into the processor 610.

Optionally, the chip 600 may further include an input interface 630. The processor 610 may control the input interface 630 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

Optionally, the chip 600 may further include an output interface 640. The processor 610 may control the output interface 640 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to the terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, details are not described here again.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

Fig. 11 is a schematic block diagram of a communication system 700 provided in an embodiment of the present application. As shown in fig. 11, the communication system 700 includes a first terminal device 710 and a second terminal device 720.

The first terminal device 710 may be configured to implement the corresponding function implemented by the first terminal device in the foregoing method, and the second terminal device 720/network device 720 may be configured to implement the corresponding function implemented by the second terminal device/network device in the foregoing method for brevity, which is not described herein again.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing a computer program.

Optionally, the computer-readable storage medium may be applied to the terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

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

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of sidestream communication, comprising:

the first terminal equipment transmits the side-line data through the first communication system and/or the second communication system.
The method of claim 1, wherein the first terminal device transmits peer-to-peer data over a first communication system and a second communication system, comprising:

the first terminal device sends the sideline data to a second protocol layer of the first communication system and a second protocol layer of the second communication system at a first protocol layer of the first communication system or the first protocol layer of the second communication system, wherein the first protocol layer is a layer above the second protocol layer.
The method of claim 1, wherein the first terminal device transmits peer-to-peer data over a first communication system and a second communication system, comprising:

the first terminal device sends sidestream data to a second protocol layer of the first communication system at a first protocol layer of the first communication system, and sends sidestream data to the second protocol layer of the second communication system at the first protocol layer of the second communication system, wherein the first protocol layer is a layer above the second protocol layer.
The method of claim 2, further comprising:

the first terminal device encrypts and/or compresses sideline data sent to a second protocol layer of the first communication system and a second protocol layer of the second communication system at a first protocol layer of the first communication system or a first protocol layer of the second communication system.
The method of claim 3, further comprising:

the first terminal device encrypts and/or compresses sideline data sent to a second protocol layer of the first communication system at a first protocol layer of the first communication system, and encrypts and/or compresses sideline data sent to the second protocol layer of the second communication system at the first protocol layer of the second communication system.
The method according to any of claims 2 to 5, wherein the sidelink data sent to the second protocol layer of the first communication system and the sidelink data sent to the second protocol layer of the second communication system comprise at least one same upper layer service.
The method according to claim 4, wherein after the first terminal device encrypts and/or compresses the sidelink data transmitted to the second protocol layer of the first communication system and the second protocol layer of the second communication system at the first protocol layer of the first communication system or the first protocol layer of the second communication system, the method further comprises:

the first terminal device executes a data copying function at a first protocol layer of the first communication system or a first protocol layer of the second communication system.
The method according to claim 5, wherein before the first terminal device encrypts and/or compresses sideline data transmitted to the second protocol layer of the first communication system at the first protocol layer of the first communication system and encrypts and/or compresses sideline data transmitted to the second protocol layer of the second communication system at the first protocol layer of the second communication system, the method further comprises:

the first terminal device performs a copy data function.
The method of claim 8, wherein the first terminal device performs a copy data function, comprising:

the first terminal device performs a function of copying data at a first protocol layer of the first communication system or at a first protocol layer of the second communication system.
The method according to any of claims 2 to 9, wherein the first protocol layer is a packet data convergence protocol, PDCP, layer and the second protocol layer is a radio link control, RLC, layer.
The method of claim 10, further comprising:

the first terminal equipment encapsulates lateral data sent by an RLC layer of the first communication system on a Media Access Control (MAC) layer of the first communication system to form a first Protocol Data Unit (PDU);

and the first terminal equipment encapsulates the side-line data sent by the RLC layer of the second communication system on the MAC layer of the second communication system to form a second PDU.
The method of claim 11, wherein the first PDU and the second PDU have the same destination address or the same source address.
The method according to any one of claims 10 to 12, wherein the mapping relationship between the logical channels of the first communication system and the logical channels of the second communication system is indicated by at least one of the following information: the destination address of the side line data, the source address of the side line data, the logical channel identification LCID, the RLC message header and the PDCP message header.
The method according to any of claims 1-13, wherein the first communication system is long term evolution, LTE, and the second communication system is a new wireless, NR.
A method of sidestream communication, comprising:

and the second terminal equipment receives the side-line data through the first communication system and/or the second communication system.
The method of claim 15, wherein the second terminal device receives peer-to-peer data via the first communication system and the second communication system, and wherein the method comprises:

the second terminal device receives, at a first protocol layer of the first communication system or the first protocol layer of the second communication system, sidestream data submitted by a second protocol layer of the first communication system and sidestream data submitted by the second protocol layer of the second communication system, where the first protocol layer is a previous layer of the second protocol layer.
The method of claim 16, further comprising:

the second terminal device decompresses and/or decrypts the sidestream data received from the second protocol layer of the first communication system and the sidestream data received from the second protocol layer of the second communication system at the first protocol layer of the first communication system or the first protocol layer of the second communication system.
The method of claim 15, wherein the second terminal device receives peer-to-peer data via the first communication system and the second communication system, and wherein the method comprises:

the second terminal device receives, at a first protocol layer of the first communication system, sidestream data submitted by a second protocol layer of the first communication system, and receives, at a first protocol layer of the second communication system, sidestream data submitted by the second protocol layer of the second communication system, where the first protocol layer is a layer above the second protocol layer.
The method of claim 18, further comprising:

the second terminal device decompresses and/or decrypts the sidestream data received from the second protocol layer of the first communication system at the first protocol layer of the first communication system, and decompresses and/or decrypts the sidestream data received from the second protocol layer of the second communication system at the first protocol layer of the second communication system.
The method according to any of claims 16 to 19, wherein the first protocol layer is a packet data convergence protocol, PDCP, layer and the second protocol layer is a radio link control, RLC, layer.
The method of claim 20, further comprising:

the second terminal device determines that the sidestream data received at the media access control, MAC, layer of the first communication system and the sidestream data received at the MAC layer of the second communication system include at least one same upper layer service.
The method of claim 21, wherein the second terminal device determines that the sidestream data received at the media access control, MAC, layer of the first communication system and the sidestream data received at the MAC layer of the second communication system include at least one same upper layer traffic, comprising:

and the second terminal equipment determines that the sidestream data received at the MAC layer of the first communication system and the sidestream data received at the MAC layer of the second communication system comprise at least one same upper layer service according to the mapping relation between the logical channel of the first communication system and the logical channel of the second communication system.
The method according to claim 22, wherein the mapping relationship between the logical channels of the first communication system and the logical channels of the second communication system is indicated by at least one of the following information: the destination address of the side line data, the source address of the side line data, the logical channel identification LCID, the RLC message header and the PDCP message header.
The method according to any of claims 15-23, wherein the first communication system is long term evolution, LTE, and the second communication system is a new wireless, NR.
A terminal device, wherein the terminal device is a first terminal device, comprising:

and the transceiving unit is used for transmitting the side-line data through the first communication system and/or the second communication system.
The terminal device according to claim 25, wherein the transceiver unit is specifically configured to:

and sending the sidestream data to a second protocol layer of the first communication system and a second protocol layer of the second communication system at a first protocol layer of the first communication system or the first protocol layer of the second communication system, wherein the first protocol layer is a layer above the second protocol layer.
The terminal device according to claim 25, wherein the transceiver unit is specifically configured to:

the method comprises the steps of sending sidestream data to a second protocol layer of the first communication system at a first protocol layer of the first communication system, and sending sidestream data to the second protocol layer of the second communication system at the first protocol layer of the second communication system, wherein the first protocol layer is a layer above the second protocol layer.
The terminal device of claim 26, wherein the terminal device further comprises:

a processing unit, configured to encrypt and/or compress, at a first protocol layer of the first communication system or a first protocol layer of the second communication system, sideline data sent to a second protocol layer of the first communication system and a second protocol layer of the second communication system.
The terminal device of claim 27, wherein the processing unit is further configured to:

the method comprises the steps of encrypting and/or compressing sideline data sent to a second protocol layer of the first communication system at a first protocol layer of the first communication system, and encrypting and/or compressing sideline data sent to the second protocol layer of the second communication system at the first protocol layer of the second communication system.
The terminal device according to any of claims 26 to 29, wherein the sidelink data sent to the second protocol layer of the first communication system and the sidelink data sent to the second protocol layer of the second communication system comprise at least one same upper layer service.
The terminal device of claim 28, wherein the processing unit is further configured to:

after the first protocol layer of the first communication system or the first protocol layer of the second communication system encrypts and/or compresses sideline data transmitted to the second protocol layer of the first communication system and the second protocol layer of the second communication system, a data copying function is executed at the first protocol layer of the first communication system or the first protocol layer of the second communication system.
The terminal device of claim 29, wherein the processing unit is further configured to:

the method comprises the steps of encrypting and/or compressing sideline data sent to a second protocol layer of the first communication system by a first protocol layer of the first communication system, and executing a data copying function before encrypting and/or compressing the sideline data sent to the second protocol layer of the second communication system by the first protocol layer of the second communication system.
The terminal device of claim 32, wherein the processing unit is specifically configured to:

the copy data function is performed at a first protocol layer of the first communication system or at a first protocol layer of the second communication system.
A terminal device according to any of claims 26 to 33, wherein said first protocol layer is a packet data convergence protocol, PDCP, layer and said second protocol layer is a radio link control, RLC, layer.
The terminal device of claim 34, wherein the terminal device further comprises:

a processing unit, configured to encapsulate, at a media access control MAC layer of the first communication system, sideline data sent by an RLC layer of the first communication system, so as to form a first protocol data unit PDU;

and encapsulating the sidelink data issued by the RLC layer of the second communication system on the MAC layer of the second communication system to form a second PDU.
A terminal device according to claim 35, wherein the first PDU and the second PDU have the same destination address or the same source address.
The terminal device according to any one of claims 34 to 36, wherein the mapping relationship between the logical channels of the first communication system and the logical channels of the second communication system is indicated by at least one of the following information: the destination address of the side line data, the source address of the side line data, the logical channel identification LCID, the RLC message header and the PDCP message header.
The terminal device of any of claims 25-37, wherein the first communication system is long term evolution, LTE, and the second communication system is a new wireless, NR.
A terminal device, wherein the terminal device is a second terminal device, comprising:

and the transceiving unit is used for receiving the side-line data through the first communication system and/or the second communication system.
The terminal device according to claim 39, wherein the transceiver unit is specifically configured to:

and receiving, at a first protocol layer of the first communication system or the first protocol layer of the second communication system, sidestream data submitted by a second protocol layer of the first communication system and sidestream data submitted by the second protocol layer of the second communication system, where the first protocol layer is a layer above the second protocol layer.
The terminal device of claim 40, wherein the terminal device further comprises:

a processing unit, configured to decompress and/or decrypt, at a first protocol layer of the first communication system or a first protocol layer of the second communication system, the sideline data received from a second protocol layer of the first communication system and the sideline data received from a second protocol layer of the second communication system.
The terminal device according to claim 39, wherein the transceiver unit is specifically configured to:

the method comprises the steps of receiving sidestream data submitted by a second protocol layer of the first communication system at a first protocol layer of the first communication system, and receiving sidestream data submitted by the second protocol layer of the second communication system at the first protocol layer of the second communication system, wherein the first protocol layer is a layer above the second protocol layer.
The terminal device of claim 42, wherein the terminal device further comprises:

a processing unit for decompressing and/or decrypting at a first protocol layer of the first communication system the sidestream data received from a second protocol layer of the first communication system and decompressing and/or decrypting at a first protocol layer of the second communication system the sidestream data received from a second protocol layer of the second communication system.
A terminal device according to any of claims 40 to 43, wherein the first protocol layer is a packet data convergence protocol, PDCP, layer and the second protocol layer is a radio Link control, RLC, layer.
The terminal device of claim 44, wherein the terminal device further comprises:

a processing unit, configured to determine that the sidestream data received at the MAC layer of the first communication system and the sidestream data received at the MAC layer of the second communication system include at least one same upper layer service.
The terminal device of claim 45, wherein the processing unit is specifically configured to:

and determining that the sidestream data received at the MAC layer of the first communication system and the sidestream data received at the MAC layer of the second communication system comprise at least one same upper layer service according to the mapping relation between the logical channel of the first communication system and the logical channel of the second communication system.
The terminal device according to claim 46, wherein the mapping relationship between the logical channels of the first communication system and the logical channels of the second communication system is indicated by at least one of the following information: the destination address of the side line data, the source address of the side line data, the logical channel identification LCID, the RLC message header and the PDCP message header.
The terminal device of any of claims 39 to 47, wherein the first communication system is Long Term Evolution (LTE) and the second communication system is a new radio NR.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 14.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 15 to 24.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 14.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 15 to 24.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 14.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 15 to 24.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 14.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 15 to 24.
A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 1 to 14.
A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 15-24.