WO2021087813A1 - 会话建立的方法、数据传输的方法以及相关装置 - Google Patents
会话建立的方法、数据传输的方法以及相关装置 Download PDFInfo
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- WO2021087813A1 WO2021087813A1 PCT/CN2019/116022 CN2019116022W WO2021087813A1 WO 2021087813 A1 WO2021087813 A1 WO 2021087813A1 CN 2019116022 W CN2019116022 W CN 2019116022W WO 2021087813 A1 WO2021087813 A1 WO 2021087813A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/12—Setup of transport tunnels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
Definitions
- the embodiments of the present application relate to the field of communications, in particular to a method for establishing a session, a method for data transmission, and related devices.
- data communication is the communication between the terminal device and the application server.
- 3GPP data communication requires the terminal device to send data to the APP server first. Then, the application server forwards the data packet to the terminal device that needs to perform data communication.
- the method of forwarding data packets by the application server requires a long path and large delay, and the local switch method can solve this problem.
- the user plane function (UPF, user plane function) first needs to obtain group member information, where the group member information includes terminal equipment and terminal equipment identification (id, identification), and each terminal equipment corresponds to a unique terminal equipment id, and then UPF according to the data
- the data radio bearer identification (DRB id, data radio bearer identification) carried in the packet identifies whether the data packet needs to be sent to the application server or forwarded to the terminal device through a local switch.
- a DRB id corresponds to a terminal device id.
- the data packet is delivered to the base station corresponding to the DRB id according to the DRB id, and then the corresponding base station delivers the data packet to the corresponding terminal device through the air interface.
- the existing local switch method can solve the problem of long path and large delay caused by application server forwarding data packets, but when data packets are transmitted between the UPF and the base station and the base station and the terminal equipment, if there are multiple terminals If the device belongs to the same base station and needs to receive data packets, the terminal device ids corresponding to multiple DRB ids are required to determine the terminal device that needs to receive the data packet. The determination efficiency of the terminal device is low, resulting in low data packet transmission efficiency.
- the embodiments of the present application provide a method for establishing a session, a method for data transmission, and related devices.
- multiple fourth devices need to receive data packets, they can obtain the group information of the second identifier indicating the first identifier, thereby determining multiple
- the first aspect of the embodiments of the present application provides a method for establishing a session, including:
- the first device when there are multiple fourth devices that need to receive data packets, the first device receives the first message sent by the second device, and the first device can The first session is established with the third device through the first message, and the first message carries the first identifier and the second identifier, and the second identifier may indicate the group information of the first identifier.
- CUPS control and user plane separation
- the first device can obtain the group information to which the second identifier indicates the first identifier, so as to determine the group information of the multiple fourth devices corresponding to the multiple first identifiers.
- One second identifier is needed to identify multiple fourth devices, which improves the efficiency of determining the fourth device, thereby improving the transmission efficiency of data packets.
- the first device after the first device receives the first message sent by the second device, that is, the first device establishes the first message with the third device. After a session, the first device may receive the data packet sent by the third device through the first session, and the data packet is marked as belonging to the group indicated by the second identifier.
- the first device In practical applications where the first device needs to receive data packets, it receives the data packet sent by the third device through the first session, and the data packet is marked as belonging to the group indicated by the second identifier, and the first device can directly obtain the group to which the data packet belongs Information and group information can determine which group the data packet needs to be transmitted to, thereby determining the fourth device that needs to receive the data packet, which improves the feasibility of the solution.
- the first device after the first device receives the first message sent by the second device, the first device After the first session is established with the third device, the first device may receive the notification message sent by the second device, and the first device may determine the multicast source data packet according to the notification message.
- the second device determines the multicast source data packet and informs the first device so that the first device directly determines the multicast source data packet.
- the first device transmits the data packet in multicast mode, it can directly use the multicast source data packet for multicast , It saves the time to determine the multicast data source, thereby improving the data transmission efficiency and the feasibility of the scheme.
- the first device after the first device receives the first message sent by the second device, the first device After establishing the first session with the third device, the first device determines the multicast data source and sends a notification message to the second device to notify the second device to determine the multicast source data packet.
- the first device determines the source of the multicast data and informs the second device, and the second device notifies the third device of this message, so that the third device directly determines the source of the multicast data, when the third device decides to transmit the data packet in multicast mode
- the multicast source data packet can be directly used for multicasting, which saves the time for determining the multicast data source, thereby improving the data transmission efficiency and the feasibility of the scheme.
- the second aspect of the embodiments of the present application provides a method for establishing a session, including:
- the first device when there are multiple fourth devices that need to receive data packets, the first device receives the second message sent by the second device, so that the first device can establish a second session with the third device according to the second message.
- the second message carries the third identifier, the second identifier, and the first list.
- the first list is a set of fourth identifiers.
- the fourth identifier is the identifier corresponding to the fourth device, and the third identifier is the same as the first list.
- the fourth identifier in corresponds to the second identifier, and the second identifier may indicate the group information of the fourth identifier in the first list.
- the second identifier can indicate the group information of the fourth identifier in the first list, and only one second identifier is needed to confirm multiple fourth devices, and the fourth device determines that Efficiency, thereby improving the efficiency of data transmission.
- the first device receives the second message sent by the second device, that is, the first device establishes the first device with the third device.
- the first device and the first device can receive the data packet sent by the third device through the second session, and the data packet is marked as belonging to the group indicated by the second identifier.
- the first device In practical applications where the first device needs to receive data packets, it receives the data packet sent by the third device through the first session, and the data packet is marked as belonging to the group indicated by the second identifier, and the first device can directly obtain the group to which the data packet belongs Information and group information can determine which group the data packet needs to be transmitted to, thereby determining the fourth device that needs to receive the data packet.
- the second session can only use one channel to transmit multiple data packets, reducing transmission resource consumption, thereby improving Transmission efficiency and the feasibility of the scheme.
- the third aspect of the embodiments of the present application provides a method for establishing a bearer, including:
- the first device sends a third message to the fifth device.
- the first device can establish a first bearer with the fifth device through the third message, and the third message also carries the fifth identifier and the second identifier.
- the second identifier is used to indicate the group information of the fourth identifier, and the fourth identifier is an identifier corresponding to the fourth device.
- the first device can obtain the group information of the fourth identifier indicated by the second identifier, and only one second identifier is needed to confirm multiple fourth devices and upgrade the fourth device. Determine the efficiency to improve the efficiency of data packet transmission.
- the first device after the first device sends the third message to the fifth device, that is, the first device establishes the first device with the fifth device. After a bearer, the first device may send a data packet to the fifth device through the first bearer, and the data packet is marked as belonging to the group indicated by the second identifier.
- the fifth device can directly obtain the group information to which the data packet belongs.
- the group information can determine which group the data packet needs to go to.
- the first device After the fifth device sends the third message, the first device may receive the notification message sent by the fifth device, and the first device may determine the multicast source data packet according to the notification message.
- the first device determines the multicast source data packet according to the notification message sent by the fifth device, which saves the time for the first device to determine the multicast source data packet, thereby improving the efficiency of data packet transmission.
- the first device After the fifth device sends the third message, the first device may send a notification message to the fifth device, so that the fifth device determines the multicast source data packet according to the notification message.
- the fifth device determines the multicast source data packet according to the notification message sent by the first device, which saves the time for the fifth device to determine the multicast source data packet, thereby improving the efficiency of data packet transmission.
- the first device After the fifth device sends the third message, the first device receives the second list sent by the fifth device, where the second list is used by the fifth device to send data packets to the fourth device in a unicast manner.
- the first device After the fifth device sends the third message, the first device sends the second list to the fifth device, and when the fifth device needs to unicast a data packet to the fourth device, it sends the data packet according to the second list.
- the fifth device can obtain the second list in different ways, thereby improving the selectivity and feasibility of the solution.
- the first device After the first device sends the third message to the fifth device, the first device sends the second list to the fourth device, so that the fourth device can receive the data packet sent by the fifth device in a unicast manner according to the second list.
- the first device can obtain the second list in different ways.
- send it to the fourth device so that the fourth device can receive data packets sent by unicast, thereby improving the selectivity of the solution And feasibility.
- the first device After the fifth device sends the third message, the first device receives the sixth identifier sent by the fifth device, where the sixth identifier is used by the fifth device to send a data packet to the fourth device in a multicast manner.
- the first device After the fifth device sends the third message, the first device sends the sixth identifier to the fifth device.
- the fifth device can obtain the sixth identifier in different ways, thereby improving the selectivity and feasibility of the solution.
- the ninth implementation manner of the third aspect of the embodiments of the present application After the first device sends the third message to the fifth device, the first device sends the sixth identifier to the fourth device, so that the fourth device can receive the data packet sent by the fifth device in a multicast manner according to the sixth identifier.
- the first device can acquire the sixth identifier in different ways.
- send it to the fourth device so that the fourth device can receive the data packet sent by multicast, thereby improving the selectivity of the solution And feasibility.
- the first device After the fifth device sends the third message, the fifth device can determine that it sends a data packet to the fourth device in unicast mode, and the fifth device sends a first notification message to the first device to inform the first device of the fifth device Send the data packet to the fourth device in unicast mode.
- the first device After sending the third message to the fifth device, the first device sends a notification message to the fifth device, and the fifth device may determine to send the data packet to the fourth device in a unicast manner according to the notification message.
- the fifth device determines to send data packets in unicast mode according to different methods, which improves the selectivity of this solution.
- the fourth aspect of the embodiments of the present application provides a bearer establishment method, including:
- the first device sends a fourth message to the fifth device.
- the first device can establish a second bearer with the fifth device through the fourth message, and the fourth message also carries the seventh identifier, the second identifier, and
- the first list is a set of fourth identifiers
- the fourth identifier is the identifier corresponding to the fourth device
- the seventh identifier corresponds to the fourth identifier in the first list
- the second identifier is used to indicate the identifier in the first list Group information of the fourth identifier.
- the first device can obtain the group information of the fourth identifier indicated by the second identifier, and only one second identifier is needed to confirm multiple fourth devices and upgrade the fourth device. Determine the efficiency to improve the efficiency of data packet transmission.
- the first device after the first device sends the fourth message to the fifth device, that is, the first device establishes the first device with the fifth device.
- the first device After the bearer, the first device may send a data packet to the fifth device through the second bearer, and the data packet is marked as belonging to the group indicated by the second identifier.
- the fifth device can directly obtain the group information to which the data packet belongs.
- the group information can determine which group the data packet needs to go to.
- the first device receives the fifth The second list sent by the device, where the second list is used by the fifth device to send data packets to the fourth device in a unicast manner.
- the first device sends the Five devices send the second list.
- the fifth device can obtain the second list in different ways, thereby improving the selectivity and feasibility of the solution.
- the first device sends a second list to the fourth device, where the second list is used by the fourth device to receive the data packet sent by the fifth device in a unicast manner.
- the first device can obtain the second list in different ways.
- send it to the fourth device so that the fourth device can receive data packets sent by unicast, thereby improving the selectivity of the solution And feasibility.
- the first device receives the first The sixth identifier sent by the fifth device, where the sixth identifier is used by the fifth device to send a data packet to the fourth device in a multicast manner.
- the first device sends the The fifth device sends the sixth identifier.
- the fifth device can obtain the sixth identifier in different ways, thereby improving the selectivity and feasibility of the solution.
- the first device sends a sixth identifier to the fourth device, where the sixth identifier is used by the fourth device to receive the data packet sent by the fifth device in a multicast manner.
- the first device can acquire the sixth identifier in different ways.
- send it to the fourth device so that the fourth device can receive the data packet sent by multicast, thereby improving the selectivity of the solution And feasibility.
- the fifth device is directed to the first The device sends a first notification message, where the notification message informs the first device that the fifth device sends the data packet to the fourth device in a unicast manner.
- the fifth device is directed to the first The device sends a second notification message, where the notification message informs the first device that the fifth device sends the data packet to the fourth device in a multicast manner.
- the fifth device itself determines to send data packets in a multicast or unicast manner, which improves the selectivity of this solution.
- the fifth aspect of the embodiments of the present application provides a data transmission method, including:
- the fifth device sends data packets to the fourth device through the second list, where the identification corresponding to the fourth device is the fourth identification, the set of fourth identifications is the first list, and the second identification indicates the first list In the fourth identifier in the group information, the second list determines the fourth device belonging to the group according to the second identifier.
- the fifth device can obtain the group information of the fourth identifier indicated by the second identifier.
- the second list can confirm the fourth device according to the group information, so according to the second identifier , Or the second list can determine multiple fourth devices to improve the efficiency of determining the fourth device, thereby improving the efficiency of data packet transmission.
- the fifth device receives the second list sent by the first device.
- the fifth device sends the second list to the first device.
- the fifth device can obtain the second list in different ways, thereby improving the selectivity and feasibility of the solution.
- the fifth device sends the second list to the fourth device, where the second list is used by the fourth device to receive the data packet sent by the fifth device in a unicast manner.
- the fifth device receives the first notification message sent by the first device, and the first notification message is used to determine the first notification message.
- the five devices send data packets to the fourth device in unicast mode.
- the fifth device sends a first notification message to the first device, wherein the first notification message is sent to the first device Tell the fifth device to send data packets to the fourth device in unicast mode.
- the fifth device can determine in different ways to send data packets in unicast mode, which improves the selectivity of this solution.
- a sixth aspect of the embodiments of the present application provides a data transmission method, including:
- the fifth device sends a data packet to the fourth device through the sixth identifier, where the identifier corresponding to the fourth device is the fourth identifier, the set of fourth identifiers is the first list, and the second identifier indicates the first list
- the fourth identifier in the group information, the sixth identifier determines the fourth device belonging to the group according to the second identifier.
- the fifth device can obtain the group information of the fourth identifier indicated by the second identifier.
- the sixth identifier can confirm the fourth device according to the group information, so according to the second identifier , Or the sixth identifier can identify multiple fourth devices, and improve the efficiency of determining the fourth device, thereby improving the efficiency of data packet transmission.
- the fifth device receives the sixth identifier sent by the first device.
- the fifth device sends the sixth identifier to the first device.
- the fifth device can obtain the sixth identifier in different ways, thereby improving the selectivity and feasibility of the solution.
- the fifth device sends a sixth identifier to the fourth device, where the sixth identifier is used by the fourth device to receive the data packet sent by the fifth device in a multicast manner.
- the fifth device receives the notification message sent by the first device, where the notification message is used to determine that the fifth device is grouped
- the data packet is sent to the fourth device in broadcast mode.
- the fifth device sends a second notification message to the first device, wherein the second notification message is sent to the first device Inform the fifth device to send data packets to the fourth device in a multicast manner.
- the fifth device can determine to send data packets in a multicast manner in different ways, thereby improving the selectivity and feasibility of the solution.
- the fifth device sends a notification message to the first device, where the notification message is used by the first device to determine the multicast source data pack.
- the fifth device receives the notification message sent by the first device, where the notification message is used by the fifth device to determine the multicast Source packet.
- the fifth device can determine the multicast source data packet in different ways, thereby improving the selectivity and feasibility of the solution.
- a communication device in a seventh aspect of the embodiments of the present application, has a function of implementing the behavior of the first device in the foregoing first aspect.
- This function can be realized by hardware, or by hardware executing corresponding software.
- the hardware or software includes one or more modules corresponding to the above-mentioned functions.
- An eighth aspect of the embodiments of the present application provides a communication device, which has a function of realizing the behavior of the first device in the second aspect described above.
- This function can be realized by hardware, or by hardware executing corresponding software.
- the hardware or software includes one or more modules corresponding to the above-mentioned functions.
- a ninth aspect of the embodiments of the present application provides a communication device, which has a function of realizing the behavior of the first device in the third aspect.
- This function can be realized by hardware, or by hardware executing corresponding software.
- the hardware or software includes one or more modules corresponding to the above-mentioned functions.
- a tenth aspect of the embodiments of the present application provides a communication device, which has a function of realizing the behavior of the first device in the fourth aspect.
- This function can be realized by hardware, or by hardware executing corresponding software.
- the hardware or software includes one or more modules corresponding to the above-mentioned functions.
- An eleventh aspect of the embodiments of the present application provides a communication device that has a function of implementing the behavior of the fifth device in the fifth aspect described above.
- This function can be realized by hardware, or by hardware executing corresponding software.
- the hardware or software includes one or more modules corresponding to the above-mentioned functions.
- a twelfth aspect of the embodiments of the present application provides a communication device, which has a function of implementing the behavior of the fifth device in the sixth aspect.
- This function can be realized by hardware, or by hardware executing corresponding software.
- the hardware or software includes one or more modules corresponding to the above-mentioned functions.
- a thirteenth aspect of the embodiments of the present application provides a session establishment device.
- the session establishment device includes a processor, a memory, a bus, and an input/output device, and the processor is connected to the memory and the input/output device.
- the bus is connected to the processor, the memory, and the input/output device respectively, and the processor executes any method in the first aspect and its possible implementation manners, or the second aspect and the possible implementation manners in the foregoing second aspect and its possible implementation manners. Either method.
- a fourteenth aspect of the embodiments of the present application provides a bearer establishment device.
- the bearer establishment device includes a processor, a memory, a bus, and an input-output device, and the processor is connected to the memory and the input-output device.
- the bus is connected to the processor, the memory, and the input/output device respectively, and the processor executes any method in the third aspect and its possible implementation manners, or the fourth aspect and the possible implementation manners in the aforementioned fourth aspect and its possible implementation manners. Either method.
- a fifteenth aspect of the embodiments of the present application provides a data transmission device.
- the data transmission device includes a processor, a memory, a bus, and an input/output device, and the processor is connected to the memory and the input/output device,
- the bus is connected to the processor, the memory, and the input/output device respectively, and the processor executes any method in the above fifth aspect and its possible implementation manners or the above sixth aspect and its possible implementation manners Either method.
- the present application also provides a communication device, which may be an integrated circuit chip, which is used to implement the function of the aforementioned first device.
- the present application also provides a communication device, which may be an integrated circuit chip, which is used to implement the function of the aforementioned fifth device.
- Another aspect of the present application provides a method for establishing a session, which is applied to a communication system, and the communication system includes a first device, a second device, and a third device;
- the first device is configured to receive the first message sent by the second device
- the first device is also used to establish a first session with the third device through the first message.
- the first device is also used to receive a second message sent by the second device
- the first device is also used to establish a second session with the third device through the second message.
- Another aspect of the present application provides a method for establishing a bearer.
- the method for establishing a session is applied to a communication system, and the communication system includes a first device and a fifth device;
- the first device is used to send a third message to the fifth device
- the first device is further configured to establish a first bearer with the fifth device through the third message
- the first device is also used to send a fourth message to the fifth device
- the first device is also used to establish a second bearer with the device through the fourth message.
- the session establishment method is applied to a communication system, and the communication system includes a first device and a fifth device;
- the fifth device is used to send data packets to the fourth device through the second list
- the fifth device is also used to send a data packet to the fourth device through the sixth identifier.
- Another aspect of the present application provides a computer-readable storage medium having instructions stored in the computer-readable storage medium, which when run on a computer, cause the computer to execute the methods described in the above aspects.
- the group information of the device can identify multiple fourth devices with only one second identifier, which improves the efficiency of determining the fourth device, thereby improving the transmission efficiency of data packets.
- FIG. 1 is a schematic diagram of a system architecture of a new air interface communication system in an embodiment of this application;
- FIG. 2 is a schematic diagram of an embodiment of a method for establishing a session in an embodiment of the application
- FIG. 3 is a schematic diagram of another embodiment of a method for establishing a session in an embodiment of this application.
- Figure 4 is a schematic diagram of an embodiment of a bearer establishment method in an embodiment of the application.
- Figure 5 is a schematic diagram of another embodiment of a bearer establishment method in an embodiment of this application.
- FIG. 6 is a schematic diagram of an embodiment of a data transmission method in an embodiment of this application.
- FIG. 7 is a schematic diagram of another embodiment of a data transmission method in an embodiment of this application.
- FIG. 8 is a schematic diagram of another embodiment of a data transmission method in an embodiment of this application.
- FIG. 9 is a schematic diagram of another embodiment of a data transmission method in an embodiment of this application.
- FIG. 10 is a schematic diagram of another embodiment of a data transmission method in an embodiment of this application.
- FIG. 11 is a schematic diagram of another embodiment of a data transmission method in an embodiment of this application.
- FIG. 12 is a schematic diagram of another embodiment of a data transmission method in an embodiment of this application.
- FIG. 13 is a schematic diagram of another embodiment of a data transmission method in an embodiment of this application.
- FIG. 14 is a schematic diagram of another embodiment of a data transmission method in an embodiment of this application.
- FIG. 15 is a schematic diagram of an embodiment of a communication device in an embodiment of this application.
- FIG. 16 is a schematic diagram of another embodiment of a communication device in an embodiment of this application.
- FIG. 17 is a schematic diagram of another embodiment of a communication device in an embodiment of this application.
- FIG. 18 is a schematic diagram of another embodiment of a communication device in an embodiment of this application.
- FIG. 19 is a schematic diagram of another embodiment of a communication device in an embodiment of this application.
- FIG. 20 is a schematic diagram of another embodiment of a communication device in an embodiment of this application.
- FIG. 21 is a schematic diagram of another embodiment of a communication device in an embodiment of this application.
- FIG. 22 is a schematic diagram of another embodiment of a communication device in an embodiment of this application.
- the embodiments of the present application provide a method for establishing a session, a method for data transmission, and related devices, which are used to improve the determination efficiency of terminal equipment, thereby improving the transmission efficiency of data packets.
- CDMA code division multiple access
- TDMA time division multiple access
- FDMA frequency division multiple access
- OFDMA orthogonal frequency-division multiple access
- SC-FDMA single carrier frequency division multiple access
- the term "system” can be used interchangeably with "network”.
- the CDMA system can implement wireless technologies such as universal terrestrial radio access (UTRA) and CDMA2000.
- UTRA can include wideband CDMA (wideband CDMA, WCDMA) technology and other CDMA variants.
- CDMA2000 can cover the interim standard (IS) 2000 (IS-2000), IS-95 and IS-856 standards.
- the TDMA system can implement wireless technologies such as the global system for mobile communication (GSM).
- GSM global system for mobile communication
- OFDMA system can realize such as evolved universal wireless terrestrial access (UTRA, E-UTRA), ultra mobile broadband (ultra mobile broadband, UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA And other wireless technologies.
- UTRA and E-UTRA are UMTS and UMTS evolved versions.
- 3GPP is a new version of UMTS that uses E-UTRA in long term evolution (LTE) and various versions based on LTE evolution.
- the Fifth Generation (5 Generation, 5G) communication system, New Radio (NR), and the future sixth generation (6th generation, 6G) mobile communication system are the next generation communication systems under study.
- the technical solutions of the embodiments of the present application can be applied to various communication systems such as V2X, LTE-V, V2V, Internet of Vehicles, MTC, IoT, LTE-M, M2M, and the Internet of Things.
- the communication system may also be applicable to future-oriented communication technologies, all of which are applicable to the technical solutions provided in the embodiments of the present application.
- the system architecture and business scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. Those of ordinary skill in the art will know that with the network With the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.
- the embodiments of this application are mainly applied to the system architecture diagram of the new air interface communication system as shown in FIG. 1.
- the core network element functions are divided into user plane functions (UPF) and access and mobility management.
- Function access and mobility management function, AMF
- UPF user plane functions
- AMF access and mobility management function
- UPF user plane functions
- AMF access and mobility management function
- the base station is divided into a centralized unit (CU) and a distributed unit (DU) according to functions.
- the CU provides interfaces with AMF and UPF, which can be used to establish a session connection with AMF and receive UPF downloads.
- AMF Access Management Function
- UPF User Plane Function
- For data packets sent there is also an interface between the CU and the DU, which is mainly used to control and coordinate multiple DUs within the base station equipment.
- the functions of the CU to control the DU and coordinate the data packets are mainly used.
- There is an interface between the DU and the CU and its function is mainly used to receive the data packet sent by the CU.
- the base station can communicate with the terminal devices 1 to 6, and can also communicate with the terminal devices 1 to 6 through a relay station.
- Terminal devices 1 to 6 can support communication with multiple base stations of different technologies.
- the terminal device can support communication with the base station of the LTE network, can also support communication with the base station of the 5G network, and can also support the base station of the LTE network and 5G Dual connection of the base station of the network.
- Terminal devices 1 to 6 also called user equipment (UE), mobile station (MS), mobile terminal (MT), terminal, etc., are a type of providing voice and/or A device with data connectivity, or a chip set in the device, for example, a handheld device with a wireless connection function, a vehicle-mounted device, etc.
- terminal devices are: mobile phones (mobile phones), tablet computers, notebook computers, handheld computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid)
- AMF Access and mobility management function
- devices that perform access and mobility management functions, and does not specifically refer to one or some devices. In actual applications, it may also be used for devices that perform access and mobility management functions. It is not called “AMF”, but is replaced by other names. The specifics are not limited here. In the embodiments of the present application, only “AMF” is used as an example for description.
- UPF is only a general term for devices that perform user-plane functions, and does not specifically refer to one or some devices. In actual applications, devices that perform user-plane functions may not be called “UPF”. Other names are used instead, and the details are not limited here. In the embodiments of the present application, only “UPF” is used as an example for description.
- AMF and UPF can be separate devices, or a group of functional entities on other devices (such as servers, etc.), which is not specifically limited here.
- Air interface multicast that is, in order to meet the needs of multiple users on the network to watch the same content at the same time, the multicast method can be used to consume only one air interface resource to ensure the high efficiency of the air interface.
- the first multicast is the multimedia broadcast multicast function.
- multicast service, MBMS which centrally belongs to the same multicast/multicast single frequency network (MBSFN) area of multiple cells with similar geographical locations. All cells belonging to the same MBSFN area need to be in the same
- the same content is broadcast on the same time-frequency resource at all times to ensure that edge terminal equipment can receive signals from multiple cells at the same time, which can combine gains and improve reception reliability.
- SCPTM single cell to multicast transmission
- SCPTM adopts the PHY layer.
- G-RNTI Group ID Group radio network temporary identifier
- C-RNTI cell radio network temporary identifier
- FIG. 2 is a schematic diagram of an embodiment of a method for establishing a session in an embodiment of this application, which mainly includes the following steps:
- a first device receives a first message sent by a second device
- the first device receives the first message sent by the second device, and the first device can trigger step 202 according to the first message.
- the first message also carries the first identifier and the second identifier, and the second identifier can indicate the first message.
- One identifies the group information.
- the first device establishes a first session with the third device.
- the first message in step 201 triggers the first device to establish a first session with the third device.
- the first device may receive a data packet sent by the third device through the first session.
- FIG. 3 is a schematic diagram of another embodiment of the method for establishing a session in an embodiment of this application, which mainly includes the following steps:
- the first device receives a second message sent by a second device
- the first device receives the second message sent by the second device.
- the first device can trigger step 302 according to the second message.
- the second message also carries the third identifier, the second identifier, and the first list.
- the list is a set of fourth identifiers, and the fourth identifier is the identifier corresponding to the fourth device.
- the third identifier corresponds to the fourth identifier in the first list one-to-one.
- the second identifier can indicate the fourth identifier in the first list.
- the group information of the identifier is a set of fourth identifiers.
- the first device establishes a second session with the third device.
- the second message in step 301 triggers the first device to establish a second session with the third device.
- the first device may receive the data packet sent by the third device through the second session.
- FIG. 4 is a schematic diagram of an embodiment of a bearer establishment method in an embodiment of this application, which mainly includes the following steps:
- the first device sends a third message to the fifth device.
- the first device sends a third message to the fifth device.
- the third message can trigger step 402.
- the third message also carries the fifth identifier and the second identifier.
- the second identifier can indicate the identity of the fourth identifier. Group information.
- the first device and the fifth device establish a first bearer.
- the third message in step 401 triggers the first device and the fifth device to establish a first bearer.
- the first device may send a data packet to the fifth device through the first bearer.
- FIG. 5 is a schematic diagram of another embodiment of the method for establishing a bearer in an embodiment of this application, which mainly includes the following steps:
- the first device sends a fourth message to the fifth device.
- the first device sends a fourth message to the fifth device.
- the fourth message can trigger step 502.
- the third message also carries the seventh identifier, the second identifier, and the first list.
- the first list is the fourth identifier.
- the fourth identifier is the identifier corresponding to the fourth device, the seventh identifier corresponds to the fourth identifier in the first list one-to-one, and the second identifier can indicate the group information of the fourth identifier in the first list.
- the first device and the fifth device establish a second bearer.
- the fourth message in step 502 triggers a device to establish a second bearer with the fifth device.
- the first device may send a data packet to the fifth device through the second bearer.
- FIG. 6 is a schematic diagram of an embodiment of a data transmission method in an embodiment of this application, which mainly includes the following steps:
- the fifth device obtains the second list.
- the fifth device obtains the second list, the identifier corresponding to the fourth device is the fourth identifier, and the set of fourth identifiers is the first list, and the second identifier may indicate the group information of the fourth identifier in the first list.
- the second list may determine the fourth device according to the group information indicated by the second identifier.
- the fifth device sends a data packet to the fourth device.
- the fifth device sends a data packet to the fourth device through the second list obtained in step 601.
- FIG. 7 is a schematic diagram of another embodiment of the data transmission method in the embodiment of this application, which mainly includes the following steps:
- the fifth device obtains the sixth identifier.
- the fifth device acquires the sixth identifier, the identifier corresponding to the fourth device is the fourth identifier, and the set of fourth identifiers is the first list, and the second identifier can indicate the group information of the fourth identifier in the first list.
- the sixth identifier may determine the fourth device according to the group information indicated by the second identifier.
- the fifth device sends a data packet to the fourth device.
- the fifth device sends a data packet to the fourth device by using the sixth identifier obtained in step 701.
- the first device may be a centralized unit (CU)
- the second device may be an access and mobility management function (AMF)
- the third device may be a user function ( user plane function, UPF)
- the fourth device may be a terminal device
- the fifth device may be a distributed unit (DU) as an example.
- CU centralized unit
- UPF user plane function
- DU distributed unit
- the functional device is replaced by another name, which is not limited here.
- the first session may be a user equipment PDU session (UE PDU session), the second session may be a group protocol data unit session (Group PDU session), and the first bearer may It is a UE data bearer (DRB), the second bearer may be a group data bearer (Group DRB), the first identifier may be a UE PDU session identifier (identity, ID), the second identifier may be VLAN ID, and the third identifier may be Group PDU session ID, the fourth identifier can be the terminal device ID, the fifth identifier can be the UE DRB ID, the sixth identifier can be the group radio network temporary identifier (G-RNTI), and the seventh identifier can be Group DRB ID, the first list can be a list of terminal device IDs, and the second list can be a list of cell radio network temporary identifiers (C-RNTI) as an example. In practical applications, it can also be a list of Sessions, bearers, identifiers,
- the efficiency of data packet transmission can be improved.
- the multicast mode can be used to transmit data packets between the CU and the UPF, or the unicast mode can be used to transmit data packets. The two methods are described below:
- the CU and the DU can use multicast or unicast for data packet transmission, and the DU and the terminal device can also use multicast or unicast for data packet transmission. It is understandable that, In practical applications, the data packet transmission modes between CU and DU and between DU and terminal equipment can be combined in many ways, which are explained separately as follows:
- FIG. 8 is a schematic diagram of another embodiment of the data transmission method in the embodiment of this application, which mainly includes the following steps:
- the AMF sends a second message to the CU.
- the AMF needs to send a second message to the CU.
- the CU can trigger step 802 according to the second message.
- the second message carries the Group PDU session ID, VLAN ID, and a list of terminal device IDs.
- Group PDU session ID and terminal device The terminal device IDs in the ID list correspond one-to-one, and the VLAN ID can indicate that the terminal device ID belongs to the same group, that is, one or more terminal device IDs correspond to the same VLAN ID, and then one or more terminal device IDs belong to the same group. group.
- CU and UPF establish a Group PDU session
- the CU establishes a Group PDU session with the UPF according to the second message received in step 801, and the established Group PDU session can be used in step 803.
- UPF sends a data packet to the CU
- the UPF may send data packets to the CU in a multicast manner through the Group PDU session established in step 802.
- the way for the CU to obtain the VLAN ID can be not only as described in step 801, but also when the CU establishes a Group PDU session with the UPF, the CU obtains it from the AMF, or the CU obtains it from the UPF. Make a limit.
- the Group PDU session ID corresponds to the terminal device ID in the terminal device ID list in a one-to-one correspondence
- the VLAN ID can indicate that the terminal device ID belongs to the same group. If the terminal device ID corresponding to the Group PDU session is indicated by the VLAN ID to belong to the same group, UPF can consider that multiple terminal devices belonging to the same group need to receive the same data packet, and UPF does not need to copy the data packet as multiple data packets. If you want to send a data packet to the CU through multiple sessions, you can only send a data packet to the CU through the Group PDU session, thereby saving channel transmission resources and improving the efficiency of data transmission.
- the CU sends a fourth message to the DU.
- the CU sends a fourth message to the DU, and then the fourth message can trigger step 805.
- the fourth message also carries the Group DRB ID, VLAN ID, and a list of terminal device IDs, and the terminal in the Group DRB ID and terminal device ID list The device ID is associated, and the VLAN ID can indicate that the terminal device ID belongs to the same group.
- CU and DU establish Group DRB
- the CU establishes a Group DRB with the DU according to the fourth message received in step 804, and the established Group DRB can be used in step 806.
- step 801 to step 803, and step 804 to step 805 there is no time sequence between step 801 to step 803, and step 804 to step 805, as long as step 803 is executed before step 806 in time sequence.
- the CU can execute step 801 at the same time. Go to step 803, and, from step 804 to step 805, it is also possible to perform step 804 to step 805 first, and then perform step 801 to step 803, which is not limited here.
- the CU sends a data packet to the DU;
- the CU may send a data packet to the DU through the Group DRB established in step 805.
- the Group DRB corresponds to the terminal device ID in the terminal device ID list, and the VLAN ID can indicate that the terminal device ID belongs to the same group. If the terminal device ID corresponding to the Group DRB is indicated by the VLAN ID to belong to the same group, similar to step 803, the CU can consider that multiple terminal devices belonging to the same group need to receive the same data packet, and then send the group DRB to the CU Send a data packet to save channel transmission resources and improve the efficiency of data transmission.
- the DU can obtain the G-RNTI in different ways, for example:
- the DU can generate G-RNTI, and send a G-RNTI configuration message and corresponding group information to the CU through the F1 interface, so that the CU can obtain the G-RNTI generated by the DU and the corresponding group information.
- the G-RNTI can also be generated by the CU, and then the DU receives the G-RNTI configuration message and the corresponding group information sent by the CU through the F1 interface, and obtains the G-RNTI and the corresponding group information generated by the CU.
- the DU can send radio resource control (RRC) messages and system information blocks (RRC) messages to the terminal device through the universal terrestrial radio access network (universal terrestrial radio access network and user to network interface, Uu) interface.
- system information blocks, SIB) messages, service data adaptation protocol (SDAP) messages, radio link control (RLC) messages, packet data convergence protocol (PDCP) messages, media An access control layer (medium acess control layer, MAC) message or a physical layer (physical layer, PHY) message enables the terminal device to receive the G-RNTI according to any of the foregoing messages.
- SIB system information blocks
- SDAP service data adaptation protocol
- RLC radio link control
- PDCP packet data convergence protocol
- media An access control layer (medium acess control layer, MAC) message or a physical layer (physical layer, PHY) message enables the terminal device to receive the G-RNTI according to any of the foregoing messages.
- MAC medium acess control layer
- PHY physical layer
- the terminal device may also receive RRC messages, SIB messages, SDAP messages, RLC messages, PDCP messages, MAC messages, or PHY messages sent by the CU through the Uu interface, and receive G-RNTI according to any of the foregoing messages, This enables the terminal device to receive the data packet sent by the DU through the G-RNTI scrambling in step 808.
- the DU sends a data packet to the terminal device.
- the DU can send data packets to the terminal device in the manner of this G-RNTI scrambling.
- the terminal device can receive the multicast reception notification sent by the DU, so that the terminal device can use the G-RNTI to receive the data packet sent by the DU.
- the terminal device can also receive the multicast reception notification sent by the CU, so that the terminal device can use the G-RNTI to receive the data packet sent by the DU.
- the DU sending data in a multicast manner may be determined by the DU.
- a second notification message is also sent to the CU to inform the CU that the DU sends data to the terminal device in a multicast manner.
- the DU sending data through the multicast mode can also be determined by the CU.
- the DU can use the notification message sent by the CU, and the DU can determine to send data to the terminal device through the multicast mode according to this message.
- the CU after the CU receives the second notification message, it can send a response reply or reject reply to the DU. In practical applications, it can also send an accept reply, which is not limited here.
- the DU After receiving the notification message, the DU may also send to the CU a different reply similar to that sent by the aforementioned CU after receiving the second notification message, which will not be repeated here.
- the DU sends a data packet to the terminal device through the G-RNTI requires the correspondence between the G-RNTI, the VLAN ID, and the terminal device ID.
- the correspondence between G-RNTI, VLAN ID, and terminal device ID may be as shown in Table 1. It should be noted that Table 1 only contains G-RNTI, VLAN ID, and terminal device ID. An example of the correspondence relationship between IDs. In actual applications, the correspondence relationship can be in other ways, which is not specifically limited here:
- Terminal device ID 1
- Terminal device ID 2
- vlan ID 1
- To vlan ID 2
- G-RNTI 2
- To vlan ID 3
- To G-RNTI 3
- the DU when the data packet obtained by the DU through Group DRB needs to be sent to the terminal device with the terminal device ID of 1, and the VLAN ID is 1, then the DU can pass the G-RNTI to 1. Send a data packet to the terminal device, and the terminal device can receive the data packet through a G-RNTI of 1.
- the DU when the data packet obtained by the DU through Group DRB needs to be sent to the terminal device with the terminal device ID of 1, and the vlan ID is 2, then the DU can send the data packet to the terminal device through the G-RNTI of 2, and the terminal device can Receive data packets at 2 through G-RNTI.
- the DU can send the data packet to the terminal device through the G-RNTI of 3, and the terminal device Data packets can be received through G-RNTI for 3.
- the CU can establish a Group PDU session with the UPF through the second message sent by the AMF, and the UPF sends data packets to the CU in a multicast manner through the Group PDU session. Secondly, the CU sends the packets in a multicast manner after receiving the UPF. After receiving the data packet, send the data packet to the DU in a multicast manner through Group DRB, and finally, after the DU receives the data packet sent by the CU in a multicast manner, it sends the data to the terminal device in a multicast manner through the obtained G-RNTI package.
- multicast is used to transmit data packets, saving channel resource consumption, and secondly, improving air interface transmission efficiency, thereby improving data transmission efficiency.
- FIG. 9 is a schematic diagram of another embodiment of the data transmission method in the embodiment of this application, which mainly includes the following steps:
- Steps 901 to 906 in this embodiment are similar to steps 801 to 806 in the embodiment shown in FIG. 8, and will not be repeated here.
- the DU obtains the C-RNTI List
- the DU can obtain the C-RNTI List in different ways, for example:
- the DU can generate the C-RNTI List, and send the C-RNTI List configuration message, the corresponding terminal device identification information and the corresponding relationship to the CU through the F1 interface, so that the CU can obtain the C-RNTI List generated by the DU,
- the C-RNTI List can also be generated by the CU, and then the DU receives the C-RNTI List configuration message sent by the CU through the F1 interface, the corresponding terminal device identification information and the corresponding relationship, and obtains the C-RNTI List generated by the CU.
- the terminal equipment identification information may include temporary mobile subscriber identity (TMSI), international mobile subscriber identity (IMSI), and globally unique temporary UE identity (GUTI), Or, F1 interface UE identity.
- the F1 interface UE identifier includes the gNB-CU UE F1 interface identifier, or the gNB-DU UE F1 interface identifier.
- the DU can send RRC messages, SIB messages, SDAP messages, RLC messages, PDCP messages, MAC messages, or PHY messages to the terminal device through the Uu interface, so that the terminal device receives the C-RNTI List according to any of the foregoing messages.
- the terminal device may also receive RRC messages, SIB messages, SDAP messages, RLC messages, PDCP messages, MAC messages, or PHY messages sent by the CU through the Uu interface, and receive the C-RNTI List according to any of the foregoing messages. , So that the terminal device can receive the data packet sent by the DU through the C-RNTI List scrambling in step 908.
- the DU sends a data packet to the terminal device.
- the DU can send data packets to the terminal device through the C-RNTI List scrambling.
- the terminal device can receive the unicast reception notification sent by the DU, so that the terminal device can use the C-RNTI List to receive the data packet sent by the DU ,
- the terminal device can also receive the unicast reception notification sent by the CU, so that the terminal device can use the C-RNTI List to receive the data packet sent by the DU.
- the DU sending data in a unicast mode may be determined by the DU.
- a first notification message is also sent to the CU to inform the CU that the DU sends data to the terminal device in a unicast mode.
- the DU sending data in unicast mode can also be determined by the CU.
- the DU can use a notification message sent by the CU, and the DU can determine to send data to the terminal device in a unicast mode according to this message.
- the CU after the CU receives the first notification message, it can send a response reply or reject reply to the DU. In practical applications, it can also send an accept reply, which is not limited here.
- the DU After receiving the notification message sent by the CU, the DU may also send to the CU a different reply similar to that sent by the aforementioned CU after receiving the first notification message, which will not be repeated here.
- the DU sends a data packet to the terminal device through the C-RNTI List, which requires the correspondence between the C-RNTI List, the VLAN ID, and the terminal device ID.
- the correspondence between the C-RNTI List, VLAN ID, and terminal device ID is similar to the foregoing Table 1, and will not be repeated here.
- the CU can establish a Group PDU session with the UPF through the second message sent by the AMF, and the UPF sends data packets to the CU in a multicast manner through the Group PDU session. Secondly, the CU sends the packets in a multicast manner after receiving the UPF. After receiving the data packet, send the data packet to the DU in a multicast manner through Group DRB, and finally, after the DU receives the data packet sent by the CU in a multicast manner, it sends it to the terminal device in a unicast manner through the obtained C-RNTI List data pack. Between UPF and CU, and between CU and DU, the transmission of data packets is carried out in a multicast mode, which saves the consumption of channel resources, thereby improving the efficiency of data transmission.
- FIG. 10 is a schematic diagram of another embodiment of the data transmission method in the embodiment of this application, which mainly includes the following steps:
- Steps 1001 to 1003 in this embodiment are similar to steps 801 to 803 in the embodiment shown in FIG. 8, and will not be repeated here.
- the CU sends a third message to the DU;
- the CU sends a third message to the DU, and then the third message can trigger step 1005.
- the third message also carries the DRB ID and VLAN ID.
- a DRB ID corresponds to a terminal device ID
- the VLAN ID can indicate that the DRB ID belongs to The same group, that is, VLAN ID, can indicate that the terminal device ID belongs to the same group.
- CU and DU establish UE DRB;
- the CU establishes a UE DRB with the DU according to the third message received in step 1004, and the established UE DRB can be used in step 1006.
- step 1001 to step 1003, and step 1004 to step 1005 there is no time sequence between step 1001 to step 1003, and step 1004 to step 1005, as long as step 1003 is executed before step 1006 in time sequence.
- the CU can execute step 1001 at the same time. Go to step 1003, and, from step 1004 to step 1005, it is also possible to perform step 1004 to step 1005 first, and then perform step 1001 to step 1003, which is not limited here.
- the CU sends a data packet to the DU;
- the CU may send a data packet to the DU through the UE DRB established in step 1005.
- the DU can reach the G-RNTI in different ways.
- the way the DU obtains the G-RNTI is similar to step 807 in the embodiment shown in FIG. 8.
- the terminal device can receive G-RNTI in different ways, which is similar to step 807 in the embodiment shown in FIG. 8. No longer.
- the DU sends a data packet to the terminal device.
- the DU can send data packets to the terminal device through the G-RNTI scrambling.
- the terminal device that can receive the multicast reception notification sent by the CU or the DU is similar to step 808 in the embodiment shown in FIG. 8, and will not be repeated here.
- the DU determines in different ways to send a data packet to the terminal device in a multicast manner, which is similar to step 808 in the embodiment shown in FIG.
- the DU sends a data packet to the terminal device through the G-RNTI, which requires the correspondence between G-RNTI, VLAN ID, and terminal device ID.
- the correspondence between G-RNTI, VLAN ID, and terminal device ID is similar to the foregoing Table 1, and will not be repeated here.
- one DRB ID corresponds to one terminal device ID
- the VLAN ID can indicate that the terminal device ID belongs to the same group. If 2 UE DRBs corresponding to 2 terminal device IDs are indicated by VLAN ID to belong to the same group, that is, in step 1006, the DU receives 2 data packets through 2 UE DRBs, and the actual content of the 2 data packets can be considered the same. That is to say, the DU can select one of the two data packets as the multicast source data packet, and then send the selected multicast source data packet to the terminal device through G-RNTI.
- the DU can determine the multicast source data packet in the 2 data packets, and send a notification message to the CU, so that the CU can determine the multicast source data packet according to the notification message, and the CU can determine the multicast source data packet in the subsequent Select unicast or multicast source data packet for multicast during data packet transmission,
- the multicast source data packet may also be determined by the CU, and a notification message may be sent to the DU, so that the DU determines the multicast source data packet among the two data packets, and selects the multicast source data packet to send to the terminal device through G-RNTI. Secondly, the DU can choose to delete the non-multicast source data packets among the two data packets, or choose to discard them.
- the CU when it receives the notification message, it can send a response reply or reject reply to the DU. In actual applications, it can also send an accept reply, which is not limited here.
- the DU After receiving the notification message, the DU may also send to the CU a different reply similar to that sent by the aforementioned CU after receiving the notification message, which will not be repeated here.
- the CU can establish a Group PDU session with the UPF through the second message sent by the AMF, and the UPF sends data packets to the CU in a multicast manner through the Group PDU session. Secondly, the CU sends the packets in a multicast manner after receiving the UPF. After the data packet, the UE DRB sends the data packet to the DU in unicast mode. Finally, after the DU receives the data packet sent by the CU in unicast mode, the DU determines the multicast source data packet in different ways, and uses the obtained G-RNTI sends the determined multicast source data packet to the terminal device in a multicast manner. Between UPF and CU, DU and terminal equipment, multicast is used to transmit data packets, which saves the consumption of channel resources. Secondly, it improves air interface transmission efficiency, thereby improving data transmission efficiency.
- the CU receives the data packet sent by the UPF in multicast through Group PDU session, and then the CU sends the data packet unicast to the DU through the UE DRB to the DU, and finally the DU scrambles to the terminal through the C-RNTI List.
- the device sends data packets in unicast mode.
- FIG. 11 is a schematic diagram of another embodiment of the data transmission method in the embodiment of this application, which mainly includes the following steps:
- Steps 1101 to 1103 in this embodiment are similar to steps 801 to 803 in the embodiment shown in FIG. 8, and will not be repeated here.
- the CU sends a third message to the DU;
- the CU sends a third message to the DU, and then the third message can trigger step 1105.
- the third message also carries the DRB ID and VLAN ID.
- One DRB ID corresponds to a terminal device ID
- the VLAN ID can indicate the terminal device ID. Belong to the same group.
- CU and DU establish UE DRB;
- the CU establishes a UE DRB with the DU according to the fourth message received in step 1104, and the established UE DRB can be used in step 1106.
- step 1101 to step 1103, and step 1104 to step 1105 there is no time sequence between step 1101 to step 1103, and step 1104 to step 1105, as long as step 1103 is executed before step 1106 in time sequence.
- the CU can execute step 1101 at the same time. Go to step 1103, and, from step 1104 to step 1105, you can also perform step 1104 to step 1105 first, and then perform step 1101 to step 1103, which is not limited here.
- the CU sends a data packet to the DU;
- the CU may send a data packet to the DU through the UE DRB established in step 1105.
- the DU obtains the C-RNTI List
- the DU can obtain the C-RNTI List in different ways.
- the multiple ways for the DU to obtain the C-RNTI List are similar to step 907 in the embodiment shown in FIG. 9.
- the terminal device can receive the C-RNTI List in different ways, which is similar to step 907 in the embodiment shown in FIG. 9. Details are not repeated here.
- the DU sends a data packet to the terminal device.
- the DU can send data packets to the terminal device through the C-RNTI List scrambling.
- the terminal device that can receive the unicast reception notification sent by the CU or DU is similar to step 908 in the embodiment shown in FIG. 9, and will not be repeated here.
- the DU determines in different ways to send data packets to the terminal device in a unicast manner, which is similar to step 908 in the embodiment shown in FIG. 9, and will not be repeated here.
- the DU sends data packets to the terminal device through the C-RNTI List, which requires the correspondence between the C-RNTI List, VLAN ID, and the terminal device ID.
- the correspondence between the C-RNTI List, VLAN ID, and terminal device ID is similar to the foregoing Table 1, and will not be repeated here.
- the CU can establish a Group PDU session with the UPF through the second message sent by the AMF, and the UPF sends data packets to the CU in a multicast manner through the Group PDU session. Secondly, the CU sends the packets in a multicast manner after receiving the UPF. After the data packet, the UE DRB sends the data packet to the DU in unicast mode, and finally the DU receives the data packet sent by the CU in unicast mode, and then sends it to the terminal device in unicast mode through the obtained C-RNTI List data pack.
- the multicast mode is used for data packet transmission between UPF and CU, which saves the consumption of channel resources, thereby improving the efficiency of data transmission.
- the CU and the DU can use multicast or unicast for data packet transmission, and the DU and the terminal device can also use multicast or unicast for data packet transmission.
- the data packet transmission modes between the CU and the DU and the DU and the terminal device can be combined in a variety of ways. The following descriptions are made separately. It can be understood that this embodiment mainly uses at least one multicast mode for data transmission. The method of packet transmission is described. Therefore, this embodiment does not describe the manner in which the CU and DU, and the DU and the terminal device are all transmitted in unicast mode:
- FIG. 12 is a schematic diagram of another embodiment of the data transmission method in the embodiment of this application, which mainly includes the following steps:
- AMF sends a first message to a CU.
- the AMF needs to send a first message to the CU.
- the CU can trigger step 1202 according to the first message.
- the first message carries the UE PDU session ID and VLAN ID.
- One UE PDU session ID corresponds to one terminal device ID.
- the VLAN ID can indicate that the UE PDU session ID belongs to the same group, that is, the VLAN ID can indicate that the terminal device ID belongs to the same group. From this, it can be known that if one or more terminal device IDs correspond to the same VLAN ID, one or Multiple terminal device IDs belong to the same group.
- CU and UPF establish a UE PDU session
- the CU establishes a UE PDU session with the UPF according to the first message received in step 1201, and the established UE PDU session can be used in step 1203.
- UPF sends a data packet to the CU
- the UPF may send data packets to the CU in a unicast manner through the UE PDU session established in step 1202.
- the CU sends a fourth message to the DU;
- the CU sends a fourth message to the DU, and then the fourth message can trigger step 1205.
- the fourth message also carries the Group DRB ID, VLAN ID, and a list of terminal device IDs, and the terminal in the Group DRB ID and terminal device ID list
- the device ID is one-to-one, and the VLAN ID can indicate that the terminal device ID belongs to the same group.
- CU and DU establish Group DRB;
- the CU establishes a Group DRB with the DU according to the fourth message received in step 1204, and the established Group DRB can be used in step 1206.
- step 1201 to step 1203, and step 1204 to step 1205 there is no time sequence between step 1201 to step 1203, and step 1204 to step 1205, as long as step 1203 is executed before step 1206 in time sequence.
- the CU can execute step 1201 at the same time. Go to step 1203, and, from step 1204 to step 1205, it is also possible to perform step 1204 to step 1205 first, and then perform step 1201 to step 1203, which is not limited here.
- the CU sends a data packet to the DU;
- the CU may send a data packet to the DU through the Group DRB established in step 1205.
- one UE PDU session ID corresponds to one terminal device ID
- the VLAN ID can indicate that the terminal device ID belongs to the same group. If there are 2 UE PDU session IDs corresponding to the 2 terminal device IDs indicated by the VLAN ID that they belong to the same group, that is, in step 1203, the UPF sends 3 data packets to the CU through 2 UE PDU sessions.
- the three data packets can be considered to have the same actual content, that is, the CU can select one of the three data packets as the multicast source data packet, and then send the selected multicast source data packet to the DU through the Group DRB.
- the AMF can determine the multicast source data packet in the 2 data packets, and send a notification message to the CU, so that the CU determines the multicast source data packet in the 2 data packets according to the notification message, and selects the multicast source data packet Send to DU through Group DRB.
- the CU can choose to delete the non-multicast source data packets in the 2 data packets, or choose to discard them.
- the multicast source data packet can also be determined by the CU, and a notification message can be sent to the AMF, so that the AMF determines the multicast source data packet according to the notification message, and after the AMF determines the multicast data packet, it can choose unicast or unicast in the subsequent data packet transmission. Multicast with multicast source data packets.
- the CU when the CU receives the notification message, it can send a response reply or reject reply to the AMF. In actual applications, it can also send an accept reply, which is not limited here.
- the AMF After the AMF receives the notification message, it may also send to the CU a different reply similar to that sent by the aforementioned CU after receiving the notification message, which will not be repeated here.
- the DU can obtain the G-RNTI in different ways, for example:
- the DU can generate G-RNTI, and send a G-RNTI configuration message and corresponding group information to the CU through the F1 interface, so that the CU can obtain the G-RNTI generated by the DU and the corresponding group information.
- the G-RNTI can also be generated by the CU, and then the DU receives the G-RNTI configuration message and the corresponding group information sent by the CU through the F1 interface, and obtains the G-RNTI and the corresponding group information generated by the CU.
- the DU can send RRC messages, SIB messages, SDAP messages, RLC messages, PDCP messages, MAC messages, or PHY messages to the terminal device through the Uu interface, so that the terminal device receives the G-RNTI according to any of the foregoing messages.
- the terminal device may also receive RRC messages, SIB messages, SDAP messages, RLC messages, PDCP messages, MAC messages, or PHY messages sent by the CU through the Uu interface, and receive G-RNTI according to any of the foregoing messages, This enables the terminal device to receive the data packet sent by the DU through the G-RNTI scrambling in step 1208.
- the DU sends a data packet to the terminal device.
- the DU can send data packets to the terminal device through the G-RNTI scrambling.
- the terminal device can receive the multicast reception notification sent by the DU, so that the terminal device can use the G-RNTI to receive the data packet sent by the DU.
- the terminal device can also receive the multicast reception notification sent by the CU, so that the terminal device can use the G-RNTI to receive the data packet sent by the DU.
- the DU sending data in a multicast manner may be determined by the DU.
- a second notification message is also sent to the CU to inform the CU that the DU sends data to the terminal device in a multicast manner.
- the DU sending data through multicast can also be determined by the CU.
- the DU can use a notification message sent by the CU, and the DU can determine to send data to the terminal device through the multicast according to this message.
- the CU after the CU receives the second notification message, it can send a response reply or reject reply to the DU. In practical applications, it can also send an accept reply, which is not limited here.
- the DU After receiving the notification message, the DU may also send to the CU a different reply similar to that sent by the aforementioned CU after receiving the second notification message, which will not be repeated here.
- the DU sends a data packet to the terminal device through the G-RNTI requires the correspondence between the G-RNTI, the VLAN ID, and the terminal device ID.
- the correspondence between G-RNTI, VLAN ID, and terminal device ID is similar to the foregoing Table 1, and will not be repeated here.
- the CU can establish a UE PDU session with the UPF through the first message sent by the AMF, and the UPF sends data packets to the CU in unicast mode through the UE PDU session. Secondly, the CU sends the data packets in unicast mode after receiving the UPF. After receiving the data packet, send the data packet to the DU in a multicast manner through Group DRB, and finally, after the DU receives the data packet sent by the CU in a multicast manner, it sends the data to the terminal device in a multicast manner through the obtained G-RNTI package.
- the CU and the DU, and the DU and the terminal equipment are all used to transmit data packets in a multicast manner, saving the consumption of channel resources, and secondly, improving the air interface transmission efficiency, thereby improving the data transmission efficiency.
- FIG. 13 is a schematic diagram of another embodiment of a data transmission method in an embodiment of this application, which mainly includes the following steps:
- Step 1301 to step 1306 in this embodiment are similar to step 1201 to step 1206 in the embodiment shown in FIG. 12, and will not be repeated here.
- the DU obtains the C-RNTI List
- the DU can obtain the C-RNTI List in different ways, for example:
- the DU can generate the C-RNTI List, and send the C-RNTI List configuration message, the corresponding terminal device identification information and the corresponding relationship to the CU through the F1 interface, so that the CU can obtain the C-RNTI List generated by the DU,
- the C-RNTI List can also be generated by the CU, and then the DU receives the C-RNTI List configuration message sent by the CU through the F1 interface, the corresponding terminal device identification information and the corresponding relationship, and obtains the C-RNTI List generated by the CU.
- the terminal equipment identification information may include TMSI, IMSI, GUTI, or F1 interface UE identification.
- the F1 interface UE identifier includes the gNB-CU UE F1 interface identifier, or the gNB-DU UE F1 interface identifier.
- the DU can send RRC messages, SIB messages, SDAP messages, RLC messages, PDCP messages, MAC messages, or PHY messages to the terminal device through the Uu interface, so that the terminal device receives the C-RNTI List according to any of the foregoing messages.
- the terminal device may also receive RRC messages, SIB messages, SDAP messages, RLC messages, PDCP messages, MAC messages, or PHY messages sent by the CU through the Uu interface, and receive the C-RNTI List according to any of the foregoing messages. , So that the terminal device can receive the data packet sent by the DU through the C-RNTI List scrambling in step 1308.
- the DU sends a data packet to the terminal device.
- the DU can send data packets to the terminal device through the C-RNTI List scrambling.
- the terminal device can receive the unicast reception notification sent by the DU, so that the terminal device can use the C-RNTI List to receive the data packet sent by the DU ,
- the terminal device can also receive the unicast reception notification sent by the CU, so that the terminal device can use the C-RNTI List to receive the data packet sent by the DU.
- the DU sending data in a unicast mode may be determined by the DU.
- a first notification message is also sent to the CU to inform the CU that the DU sends data to the terminal device in a unicast mode.
- the DU sending data in unicast mode can also be determined by the CU.
- the DU can use a notification message sent by the CU, and the DU can determine to send data to the terminal device in a unicast mode according to this message.
- the CU after the CU receives the first notification message, it can send a response reply or reject reply to the DU. In practical applications, it can also send an accept reply, which is not limited here.
- the DU After receiving the notification message sent by the CU, the DU may also send to the CU a different reply similar to that sent by the aforementioned CU after receiving the first notification message, which will not be repeated here.
- the DU sends a data packet to the terminal device through the C-RNTI List, which requires the correspondence between the C-RNTI List, the VLAN ID, and the terminal device ID.
- the correspondence between the C-RNTI List, VLAN ID, and terminal device ID is similar to the foregoing Table 1, and will not be repeated here.
- the CU can establish a UE PDU session with the UPF through the first message sent by the AMF, and the UPF sends data packets to the CU in unicast mode through the UE PDU session. Secondly, the CU sends the data packets in unicast mode after receiving the UPF. After the data packet, the multicast source data packet is determined in different ways, and then the determined multicast source data packet is sent to the DU in multicast through Group DRB. Finally, after the DU receives the data packet sent by the CU in multicast , Send data packets to the terminal device in unicast mode through the acquired C-RNTI List.
- the multicast mode is adopted between the CU and the DU for data packet transmission, which saves the consumption of channel resources, thereby improving the efficiency of data transmission.
- FIG. 14 is a schematic diagram of another embodiment of the data transmission method in the embodiment of this application, which mainly includes the following steps:
- Step 1401 to step 1403 in this embodiment are similar to step 1201 to step 1203 in the embodiment shown in FIG. 12, and will not be repeated here.
- the CU sends a third message to the DU;
- the CU sends a third message to the DU, and step 1405 can be triggered by the third message.
- the third message also carries the DRB ID and VLAN ID.
- One DRB ID corresponds to one terminal device ID, and the VLAN ID can indicate that the DRB ID belongs to the same one.
- the group that is, the VLAN ID, can indicate that the terminal device ID belongs to the same group.
- CU and DU establish UE DRB
- the CU establishes a UE DRB with the DU according to the third message received in step 1404, and the established UE DRB can be used in step 1406.
- step 1401 to step 1403, and step 1404 to step 1405 there is no time sequence between step 1401 to step 1403, and step 1404 to step 1405, as long as step 1403 is executed before step 1406 in time sequence.
- the CU can execute step 1401 at the same time. Go to step 1403, and, from step 1404 to step 1405, it is also possible to perform step 1404 to step 1405 first, and then perform step 1401 to step 1403, which is not limited here.
- the CU sends a data packet to the DU;
- the CU may send a data packet to the DU through the UE DRB established in step 1405.
- DU obtains G-RNTI
- the DU can reach the G-RNTI in different ways.
- the way the DU obtains the G-RNTI is similar to step 1207 in the embodiment shown in FIG. 12.
- the terminal device can receive G-RNTI in different ways similar to step 1207 in the embodiment shown in FIG. 12. No longer.
- the DU sends a data packet to the terminal device.
- the DU can send data packets to the terminal device through the G-RNTI scrambling.
- the terminal device that can receive the multicast reception notification sent by the CU or DU is similar to step 1208 in the embodiment shown in FIG. 12, and will not be repeated here.
- the determination by the DU in different ways to send a data packet to the terminal device in a multicast manner is similar to step 1208 in the embodiment shown in FIG. 12, and will not be repeated here.
- the DU sends a data packet to the terminal device through the G-RNTI, which requires the correspondence between G-RNTI, VLAN ID, and terminal device ID.
- the correspondence between G-RNTI, VLAN ID, and terminal device ID is similar to the foregoing Table 1, and will not be repeated here.
- step 1404 it can be learned from step 1404 that one DRB ID corresponds to one terminal device ID, and the VLAN ID can indicate that the terminal device ID belongs to the same group. If 5 UE DRBs corresponding to 5 terminal device IDs are indicated by VLAN ID to belong to the same group, that is, step 1406 is that the DU receives 5 data packets through 5 UE DRBs, and the actual content of the 5 data packets can be considered the same. That is to say, the DU can select one of the five data packets as the multicast source data packet, and then send the selected multicast source data packet to the terminal device through the G-RNTI.
- the DU can determine the multicast source data packet in the 5 data packets, and send a notification message to the CU, so that the CU can determine the multicast source data packet according to the notification message, and the CU can determine the multicast source data packet in the subsequent Select unicast or multicast source data packet for multicast during data packet transmission,
- the multicast source data packet may also be determined by the CU, and a notification message may be sent to the DU, so that the DU determines the multicast source data packet among the 5 data packets, and selects the multicast source data packet to send to the terminal device through G-RNTI. Secondly, the DU can choose to delete the non-multicast source data packets among the 5 data packets, or choose to discard them.
- the CU when it receives the notification message, it can send a response reply or reject reply to the DU. In actual applications, it can also send an accept reply, which is not limited here.
- the DU After receiving the notification message, the DU may also send to the CU a different reply similar to that sent by the aforementioned CU after receiving the notification message, which will not be repeated here.
- the CU can establish a UE PDU session with the UPF through the first message sent by the AMF, and the UPF sends data packets to the CU in unicast mode through the UE PDU session. Secondly, the CU sends the data packets in unicast mode after receiving the UPF. After the data packet, the UE DRB sends the data packet to the DU in unicast mode. Finally, after the DU receives the data packet sent by the CU in unicast mode, the DU determines the multicast source data packet in different ways, and uses the obtained G-RNTI sends the determined multicast source data packet to the terminal device in a multicast manner. Between the DU and the terminal equipment, the multicast mode is used for data packet transmission, which improves the air interface transmission efficiency, thereby improving the data transmission efficiency.
- FIG. 15 is a schematic diagram of an embodiment of a communication device in an embodiment of the application.
- the communication device 1500 includes:
- the receiving module 1501 is configured to receive a first message sent by a second device, where the first message is used for the first device to establish a first session with the third device, the first message carries a first identifier and a second identifier, and the second identifier Indicates the group information of the first identifier.
- the receiving module 1501 is further configured to receive the third A data packet sent by the device through the first session, where the data packet is marked as belonging to the group indicated by the second identifier.
- the receiving module 1501 is further configured to receive the second A notification message sent by the device, where the notification message is used by the first device to determine the multicast source data packet.
- the communication device 1500 further includes a sending module 1502, Send a notification message to the second device, where the notification message is used by the second device to determine the multicast source data packet.
- FIG. 16 is a schematic diagram of another embodiment of the first device in the embodiment of the application.
- the communication device 1600 includes:
- the receiving module 1601 is configured to receive a second message sent by the second device, where the second message is used for the first device to establish a second session with the third device, and the second message carries the third identifier, the second identifier, and the first list ,
- the first list is a set of fourth identifiers
- the fourth identifier is the identifier corresponding to the fourth device
- the third identifier corresponds to the fourth identifier in the first list
- the second identifier indicates the identity of the fourth identifier in the first list Group information.
- the receiving module 1601 is further configured to receive the third device through The data packet sent in the second session, where the data packet is marked as belonging to the group indicated by the second identifier.
- FIG. 17 is a schematic diagram of another embodiment of the first device in the embodiment of the application.
- the communication device 1700 includes:
- the sending module 1701 is configured to send a third message to the fifth device, where the third message is used for the first device and the fifth device to establish a first bearer, the third message carries the fifth identifier and the second identifier, and the second identifier indicates The group information of the fourth identifier, and the fourth identifier is an identifier corresponding to the fourth device.
- the sending module 1701 is further configured to pass the first The bearer sends a data packet to the fifth device, where the data packet is marked as belonging to the group indicated by the second identifier.
- the communication device 1700 further includes a receiving module 1702, For receiving a notification message sent by the fifth device, where the notification message is used by the first device to determine the multicast source data packet.
- the sending module 1701 is further configured to send a message to the fifth The device sends a notification message, where the notification message is used by the fifth device to determine the multicast source data packet.
- the receiving module 1702 is further configured to receive the fifth The second list sent by the device, where the second list is used by the fifth device to send data packets to the fourth device in a unicast manner.
- the sending module 1701 is further configured to send a message to the fifth The device sends the second list.
- the sending module 1701 is also used to send the fourth The device sends the second list, where the second list is used by the fourth device to receive the data packet sent by the fifth device in a unicast manner.
- the receiving module 1702 is further configured to receive the fifth The sixth identifier sent by the device, where the sixth identifier is used by the fifth device to send a data packet to the fourth device in a multicast manner.
- the sending module 1701 is further configured to send a message to the fifth The device sends the sixth identifier.
- the sending module 1701 is also used to send the fourth The device sends a sixth identifier, where the sixth identifier is used by the fourth device to receive a data packet sent by the fifth device in a multicast manner.
- the sending module 1701 is further configured to send a message to the first The device sends a first notification message, where the first notification message is used to inform the first device that the fifth device sends a data packet to the fourth device in a unicast manner.
- the sending module 1701 is further configured to send a message to the fifth The device sends a notification message, where the notification message is used to determine that the fifth device sends a data packet to the fourth device in a unicast manner.
- FIG. 18 is a schematic diagram of another embodiment of the first device in the embodiment of the application.
- the communication device 1800 includes:
- the sending module 1801 is configured to send a fourth message to the fifth device, where the fourth message is used for the first device and the fifth device to establish a second bearer, and the fourth message carries the seventh identifier, the second identifier, and the first list,
- the first list is a set of fourth identifiers
- the fourth identifier is the identifier corresponding to the fourth device
- the seventh identifier corresponds to the fourth identifier in the first list
- the second identifier indicates the group to which the fourth identifier in the first list belongs information.
- the sending module 1801 is further configured to pass through the second The bearer sends a data packet to the fifth device, where the data packet is marked as belonging to the group indicated by the second identifier.
- the communication device 1800 further includes a receiving module 1802, For receiving the second list sent by the fifth device, the second list is used for the fifth device to send data packets to the fourth device in a unicast manner.
- the sending module 1801 is further configured to send a message to the fifth The device sends the second list.
- the sending module 1801 is further configured to send The device sends the second list, where the second list is used by the fourth device to receive the data packet sent by the fifth device in a unicast manner.
- the receiving module 1802 is further configured to receive the fifth The sixth identifier sent by the device, where the sixth identifier is used by the fifth device to send a data packet to the fourth device in a multicast manner.
- the sending module 1801 is further configured to send a message to the fifth The device sends the sixth identifier.
- the sending module 1801 is further configured to send The device sends a sixth identifier, where the sixth identifier is used by the fourth device to receive a data packet sent by the fifth device in a multicast manner.
- the sending module 1801 is further configured to send a message to the first The device sends a first notification message, where the first notification message is used to inform the first device that the fifth device sends a data packet to the fourth device in a unicast manner.
- the sending module 1801 is further configured to send a message to the fifth The device sends a notification message, where the notification message is used to determine that the fifth device sends a data packet to the fourth device in a multicast manner.
- the first device in the embodiment of the present application is described above, and the fifth device in the embodiment of the present application is described below:
- FIG. 19 is a schematic diagram of an embodiment of the fifth device in the embodiment of the application.
- the communication device 1900 includes:
- the sending module 1901 is configured to send data packets to the fourth device through the second list, where the identifier corresponding to the fourth device is the fourth identifier, the set of fourth identifiers is the first list, and the second identifier indicates the The group information of the fourth identifier, and the second list determines the fourth device belonging to the group according to the second identifier.
- the communication device 1900 further includes a receiving module 1902, To receive the second list sent by the first device.
- the sending module 1901 is further configured to send a message to the first The device sends the second list.
- the sending module 1901 is further configured to send The device sends the second list, where the second list is used by the fourth device to receive the data packet sent by the fifth device in a unicast manner.
- the receiving module 1902 is further configured to receive the first A notification message sent by the device, where the notification message is used to determine that the fifth device sends a data packet to the fourth device in a unicast manner.
- the sending module 1901 is further configured to send a message to the first The device sends a first notification message, where the first notification message is used to inform the first device that the fifth device sends a data packet to the fourth device in a unicast manner.
- FIG. 20 is a schematic diagram of another embodiment of the fifth device in the embodiment of the application.
- the communication device 2000 includes:
- the sending module 2001 is configured to send a data packet to the fourth device through the sixth identifier, where the identifier corresponding to the fourth device is the fourth identifier, the set of fourth identifiers is the first list, and the second identifier indicates the The group information of the fourth identifier, and the sixth identifier determines the fourth device belonging to the group according to the second identifier.
- the communication device 2000 further includes a receiving module 2002, To receive the sixth identifier sent by the first device.
- the sending module 2001 is further configured to send a message to the first The device sends the sixth identifier.
- the sending module 2001 is further configured to send The device sends a sixth identifier, where the sixth identifier is used by the fourth device to receive a data packet sent by the fifth device in a multicast manner.
- the receiving module 2002 is further configured to receive the first A notification message sent by the device, where the notification message is used to determine that the fifth device sends a data packet to the fourth device in a multicast manner.
- the sending module 2001 is further configured to send a message to the first The device sends a second notification message, where the second notification message informs the first device that the fifth device sends a data packet to the fourth device in a multicast manner.
- the sending module 2001 is further configured to send a message to the first The device sends a notification message, where the notification message is used by the first device to determine the multicast source data packet.
- the receiving module 2002 is further configured to receive the first The notification message sent by the device, where the notification message is used by the fifth device to determine the multicast source data packet.
- FIG. 21 is a schematic diagram of another embodiment of the first device in the embodiment of the application.
- the communication device 2100 may include one or more central processing units (CPU) 2101 and a memory 2105.
- CPU central processing units
- One or more applications or data are stored in 2105.
- the memory 2105 may be volatile storage or persistent storage.
- the program stored in the memory 2105 may include one or more modules, and each module may include a series of instruction operations on the first device.
- the central processing unit 2101 may be configured to communicate with the memory 2105, and execute a series of instruction operations in the memory 2105 on the communication device 2100.
- the communication device 2100 may also include one or more power supplies 2102, one or more wired or wireless network interfaces 2103, one or more input and output interfaces 2104, and/or one or more operating systems, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.
- operating systems such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.
- the central processing unit 2101 can perform operations performed by the communication device in the embodiments shown in FIG. 15 to FIG. 18, and details are not described herein again.
- FIG. 22 is a schematic diagram of another embodiment of the fifth device in the embodiment of the application.
- the communication device 2200 may include one or more central processing units (CPU) 2201 and a memory 2205.
- CPU central processing units
- One or more applications or data are stored in 2205.
- the memory 2205 may be volatile storage or persistent storage.
- the program stored in the memory 2205 may include one or more modules, and each module may include a series of instruction operations on the fifth device.
- the central processing unit 2201 may be configured to communicate with the memory 2205, and execute a series of instruction operations in the memory 2205 on the communication device 2200.
- the communication device 2200 may also include one or more power supplies 2202, one or more wired or wireless network interfaces 2203, one or more input and output interfaces 2204, and/or one or more operating systems, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.
- operating systems such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.
- the central processing unit 2201 can perform operations performed by the communication device in the embodiments shown in FIG. 19 to FIG. 20, and details are not described herein again.
- the computer program product includes one or more computer instructions.
- the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
- the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
- the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
- wired such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)
- wireless such as infrared, wireless, microwave, etc.
- the computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server or a data center integrated with one or more available media.
- the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
- the disclosed system, device, and method may be implemented in other ways.
- the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
- the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
- the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
- the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
- the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
- the technical solution of the present application essentially or the part that contributes to the existing technology or all or 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 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 disks or optical disks and other media that can store program codes. .
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Abstract
Description
终端设备ID=1 | 终端设备ID=2 | |
vlan ID=1 | G-RNTI=1 | |
vlan ID=2 | G-RNTI=2 | |
vlan ID=3 | G-RNTI=3 |
Claims (30)
- 一种会话建立的方法,其特征在于,包括:第一设备接收第二设备发送的第一消息,其中,所述第一消息用于所述第一设备与第三设备建立第一会话,所述第一消息携带第一标识以及第二标识,所述第二标识指示所述第一标识的所属组信息。
- 根据权利要求1所述的方法,其特征在于,所述第一设备接收第二设备发送的第一消息之后,所述方法还包括:所述第一设备接收所述第三设备通过所述第一会话发送的数据包,其中,所述数据包被标记为属于所述第二标识指示的组。
- 一种会话建立的方法,其特征在于,包括:第一设备接收第二设备发送的第二消息,其中,所述第二消息用于所述第一设备与第三设备建立第二会话,所述第二消息携带第三标识、第二标识以及第一列表,所述第一列表为第四标识的集合,所述第四标识为第四设备对应的标识,所述第三标识与所述第一列表中的所述第四标识对应,所述第二标识指示所述第一列表中的所述第四标识的所属组信息。
- 根据权利要求3所述的方法,其特征在于,所述第一设备接收第二设备发送的第二消息之后,所述方法还包括:所述第一设备接收所述第三设备通过所述第二会话发送的数据包,其中,所述数据包被标记为属于所述第二标识指示的组。
- 一种承载建立的方法,其特征在于,包括:第一设备向第五设备发送第三消息,其中,所述第三消息用于所述第一设备与所述第五设备建立第一承载,所述第三消息携带第五标识以及第二标识,所述第二标识指示第四标识的所属组信息,所述第四标识为第四设备对应的标识。
- 根据权利要求5所述的方法,其特征在于,所述第一设备向第五设备发送第三消息之后,所述方法还包括:所述第一设备通过所述第一承载向所述第五设备发送数据包,其中,所述数据包被标记为属于所述第二标识指示的组。
- 根据权利要求5或6所述的方法,其特征在于,所述第一设备向第五设备发送第三消息之后,所述方法还包括:所述第一设备接收第五设备发送的第二列表,其中,所述第二列表用于所述第五设备以单播方式向第四设备发送所述数据包。
- 根据权利要求5或6所述的方法,其特征在于,所述第一设备向第五设备发送第三消息之后,所述方法还包括:所述第一设备接收第五设备发送的第六标识,其中,所述第六标识用于第五设备以组播方式向所述第四设备发送所述数据包。
- 根据权利要求8所述的方法,其特征在于,所述第一设备向第五设备发送第三消息之后,所述方法还包括:所述第一设备向所述第四设备发送所述第六标识,其中,所述第六标识用于所述第四设备接收所述第五设备以组播方式发送的所述数据包。
- 根据权利要求5或6所述的方法,其特征在于,所述第一设备向第五设备发送第三消息之后,所述方法还包括:所述第五设备向所述第一设备发送第一通知消息,其中,所述第一通知消息用于向所述第一设备告知所述第五设备以单播方式向所述第四设备发送所述数据包。
- 一种承载建立的方法,其特征在于,包括:第一设备向第五设备发送第四消息,其中,所述第四消息用于所述第一设备与所述第五设备建立第二承载,所述第四消息携带第七标识、第二标识以及第一列表,所述第一列表为第四标识的集合,所述第四标识为第四设备对应的标识,所述第七标识与所述第一列表中的所述第四标识对应,所述第二标识指示所述第一列表中的所述第四标识的所属组信息。
- 根据权利要求11所述的方法,其特征在于,所述第一设备向第五设备发送第四消息之后,所述方法还包括:所述第一设备通过所述第二承载向所述第五设备发送数据包,其中,所述数据包被标记为属于所述第二标识指示的组。
- 根据权利要求11或12所述的方法,其特征在于,所述第一设备向第五设备发送第四消息之后,所述方法还包括:所述第一设备接收第五设备发送的第二列表,其中,所述第二列表用于所述第五设备以单播方式向第四设备发送所述数据包。
- 根据权利要求11或12所述的方法,其特征在于,所述第一设备向第五设备发送第三消息之后,所述方法还包括:所述第一设备接收第五设备发送的第六标识,其中,所述第六标识用于第五设备以组播方式向所述第四设备发送所述数据包。
- 根据权利要求14所述的方法,其特征在于,所述第一设备向第五设备发送第三消息之后,所述方法还包括:所述第一设备向所述第四设备发送所述第六标识,其中,所述第六标识用于所述第四设备接收所述第五设备以组播方式发送的所述数据包。
- 根据权利要求11或12所述的方法,其特征在于,所述第一设备向第五设备发送第三消息之后,所述方法还包括:所述第五设备向所述第一设备发送第一通知消息,其中,所述第一通知消息用于向所述第一设备告知所述第五设备以单播方式向所述第四设备发送所述数据包。
- 根据权利要求11或12所述的方法,其特征在于,所述第一设备向第五设备发送第三消息之后,所述方法还包括:所述第五设备向所述第一设备发送第二通知消息,其中,所述第二通知消息用于向所述第一设备告知所述第五设备以组播方式向所述第四设备发送所述数据包。
- 一种数据传输的方法,其特征在于,包括:第五设备通过第二列表向第四设备发送数据包,其中,所述第四设备对应的标识为第四标识,所述第四标识的集合为第一列表,第二标识指示所述第一列表中的第四标识的所属组信息,所述第二列表根据所述第二标识确定属于所述所属组的所述第四设备。
- 根据权利要求18所述的方法,其特征在于,所述第五设备通过第二列表向第四设备发送数据包之前,所述方法还包括:所述第五设备向第一设备发送所述第二列表。
- 根据权利要求18所述的方法,其特征在于,所述第五设备通过第二列表向第四设备发送数据包之前,所述方法还包括:所述第五设备向所述第一设备发送第一通知消息,其中,所述第一通知消息用于向所述第一设备告知所述第五设备以单播方式向所述第四设备发送所述数据包。
- 一种数据传输的方法,其特征在于,包括:第五设备通过第六标识向第四设备发送数据包,其中,所述第四设备对应的标识为第四标识,所述第四标识的集合为第一列表,第二标识指示所述第一列表中的第四标识的所属组信息,所述第六标识根据所述第二标识确定属于所述所属组的所述第四设备。
- 根据权利要求21所述的方法,其特征在于,所述第五设备通过第六标识向第四设备发送数据包之前,所述方法还包括:所述第五设备向第一设备发送所述第六标识。
- 根据权利要求22所述的方法,其特征在于,所述第五设备通过第六标识向第四设备发送数据包之前,所述方法还包括:所述第五设备向所述第四设备发送所述第六标识,其中,所述第六标识用于所述第四设备接收所述第五设备以组播方式发送的所述数据包。
- 根据权利要求21所述的方法,其特征在于,所述第五设备通过第六标识向第四设备发送数据包之前,所述方法还包括:所述第五设备向所述第一设备发送第二通知消息,其中,所述第二通知消息向所述第一设备告知所述第五设备以组播方式向所述第四设备发送所述数据包。
- 一种通信设备,其特征在于,包括:接收模块,用于接收第二设备发送的第一消息,其中,所述第一消息用于所述第一设备与第三设备建立第一会话,所述第一消息携带第一标识以及第二标识,所述第二标识指示所述第一标识的所属组信息。
- 一种通信设备,其特征在于,包括:接收模块,用于接收第二设备发送的第二消息,其中,所述第二消息用于所述第一设备与第三设备建立第二会话,所述第二消息携带第三标识、第二标识以及第一列表,所述第一列表为第四标识的集合,所述第四标识为第四设备对应的标识,所述第三标识与所述第一列表中的所述第四标识对应,所述第二标识指示所述第一列表中的所述第四标识的所属组信息。
- 一种通信设备,其特征在于,包括:发送模块,用于向第五设备发送第三消息,其中,所述第三消息用于所述第一设备与 所述第五设备建立第一承载,所述第三消息携带第五标识以及第二标识,所述第二标识指示第四标识的所属组信息,所述第四标识为第四设备对应的标识。
- 一种通信设备,其特征在于,包括:发送模块,用于向第五设备发送第四消息,其中,所述第四消息用于所述第一设备与所述第五设备建立第二承载,所述第四消息携带第七标识、第二标识以及第一列表,所述第一列表为第四标识的集合,所述第四标识为第四设备对应的标识,所述第七标识与所述第一列表中的所述第四标识对应,所述第二标识指示所述第一列表中的所述第四标识的所属组信息。
- 一种通信设备,其特征在于,包括:发送模块,用于通过第二列表向第四设备发送数据包,其中,所述第四设备对应的标识为第四标识,所述第四标识的集合为第一列表,第二标识指示所述第一列表中的第四标识的所属组信息,所述第二列表根据所述第二标识确定属于所述所属组的所述第四设备。
- 一种通信设备,其特征在于,包括:发送模块,用于通过第六标识向第四设备发送数据包,其中,所述第四设备对应的标识为第四标识,所述第四标识的集合为第一列表,第二标识指示所述第一列表中的第四标识的所属组信息,所述第六标识根据所述第二标识确定属于所述所属组的所述第四设备。
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