CN114286397B

CN114286397B - Transmission link switching method and related products

Info

Publication number: CN114286397B
Application number: CN202011037293.2A
Authority: CN
Inventors: 韩立锋
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2023-05-12
Anticipated expiration: 2040-09-27
Also published as: WO2022063186A1; CN114286397A

Abstract

The embodiment of the application provides a switching method of a transmission link and a related product, wherein the method comprises the following steps: the terminal receives MBS data packets at a first link leg1; when the terminal determines that the first preset condition is met, the terminal switches the leg1 into a second link leg2 to receive the MBS data packet; the first link leg1 is a first transmission mode, and the second link leg2 is a second transmission mode. The technical scheme provided by the application has the advantage of high user experience.

Description

Transmission link switching method and related products

Technical Field

The present disclosure relates to the field of communications processing technologies, and in particular, to a method for switching a transmission link and a related product.

Background

Unicast (Unicast), which refers to a transmission mode in which a base station/terminal and a terminal perform one-to-one transmission through a radio bearer; the DRB (Data Radio Bearer ) refers to a unicast data radio bearer.

Multicast refers to a mode in which a base station and a terminal transmit over one-to-many radio bearers, and a single transmitted data may be received by a group of terminals. MRB (MBS Point to Multipoint Radio Bearer) is referred to herein as multicast/broadcast mode radio bearer.

When the existing unicast and multicast are switched, the network performance is reduced, and the user experience is affected.

Disclosure of Invention

The embodiment of the application discloses a switching method of transmission links and related products, wherein when MBS data packets are received, switching of two transmission links in different transmission modes is performed after certain conditions are met, so that network performance is improved, and user experience is improved.

In a first aspect, a method for switching a transmission link is provided, the method including the steps of:

the terminal receives MBS data packets at a first link leg1;

when the terminal determines that the first preset condition is met, the terminal switches the leg1 into a second link leg2 to receive the MBS data packet;

the first link leg1 is a first transmission mode, and the second link leg2 is a second transmission mode

In a second aspect, there is provided a user equipment UE, the UE comprising:

a communication unit, configured to receive an MBS data packet on a first link leg1;

and the processing unit is used for switching the leg1 into the second link leg2 to receive the MBS data packet when the first preset condition is met.

In a third aspect, there is provided a terminal comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps of the method of the first aspect.

In a fourth aspect, a computer-readable storage medium is provided, storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method of the first aspect.

In a fifth aspect, a computer program product is provided, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, the computer program being operable to cause a computer to perform part or all of the steps as described in the first aspect of the embodiments of the present application. The computer program product may be a software installation package.

In a sixth aspect, a chip system is provided, the chip system comprising at least one processor, a memory and an interface circuit, the memory, the transceiver and the at least one processor being interconnected by a line, the at least one memory having a computer program stored therein; the computer program, when executed by the processor, implements the method of the first aspect.

By implementing the embodiment of the application, the technical scheme provided by the application receives the MBS data packet at the first link leg1; and when the terminal determines that the first preset condition is met, the terminal switches the leg1 into a second link leg2 to receive the MBS data packet. Therefore, the soft handoff of the transmission mode can be executed on the MBS data packet, the network time delay is reduced, the transmission reliability of the data packet is improved, and the network performance and the user experience are improved.

Drawings

The drawings used in the embodiments of the present application are described below.

FIG. 1 is a system architecture diagram of an example communication system provided in an embodiment of the present application;

fig. 2 is a schematic flow chart of a switching method of a transmission link according to an embodiment of the present application;

fig. 3 is a schematic protocol architecture diagram of a handover method of a transmission link according to an embodiment of the present application;

fig. 4 is a flow chart of a switching method of a transmission link according to an embodiment of the present application;

fig. 5 is a schematic protocol architecture diagram of a switching method of a transmission link according to a second embodiment of the present application;

fig. 6 is a flow chart of a switching method of a transmission link according to a second embodiment of the present application;

fig. 7 is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

Embodiments of the present application are described below with reference to the accompanying drawings in the embodiments of the present application.

The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this context, the character "/" indicates that the front and rear associated objects are an "or" relationship.

The term "plurality" as used in the embodiments herein refers to two or more. The first, second, etc. descriptions in the embodiments of the present application are only used for illustrating and distinguishing the description objects, and no order division is used, nor does it indicate that the number of the devices in the embodiments of the present application is particularly limited, and no limitation on the embodiments of the present application should be construed. The "connection" in the embodiments of the present application refers to various connection manners such as direct connection or indirect connection, so as to implement communication between devices, which is not limited in any way in the embodiments of the present application.

The technical solution of the embodiment of the present application may be applied to an example communication system 100 as shown in fig. 1, where the example communication system 100 includes a terminal 110 and a network device 120, and the terminal 110 is communicatively connected to the network device 120.

The example communication system 100 may be, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) system, long term evolution advanced (Advanced long term evolution, LTE-a) system, new Radio (NR) system, evolution system of NR system, LTE system over unlicensed spectrum (LTE-based access to unlicensed spectrum, LTE-U), NR system over unlicensed spectrum (NR-based access tounlicensed spectrum, NR-U), universal mobile communication system (Universal Mobile Telecommunication System, UMTS), next generation communication system, or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, with the development of communication technology, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, and the like, to which the embodiments of the present application can also be applied. Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, and a Stand Alone (SA) fabric scenario.

The terminal 110 in the embodiments of the present application may refer to a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal may also be a cellular telephone, a cordless telephone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a relay device, an in-vehicle device, a wearable device, a terminal in a future 5G network or a terminal in a future evolved public land mobile network (public land mobile network, PLMN), etc., as the embodiments of the application are not limited in this respect.

The network device 120 in this embodiment of the present application may be a device for communicating with a terminal, which may be an evolved NodeB (eNB or eNodeB) in an LTE system, or may be a radio controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or may be a relay device, an access point, an in-vehicle device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network, where one or a group of base stations in the 5G system (including multiple antenna panels) antenna panels, or may also be a network node that forms a gNB or a transmission point, such as a baseband unit (BBU), or a Distributed Unit (DU), or the like, which is not limited in this embodiment of the present application.

In some deployments, the gNB may include a Centralized Unit (CU) and DUs. The gNB may also include an active antenna unit (active antenna unit, AAU). The CU implements part of the functionality of the gNB and the DU implements part of the functionality of the gNB. For example, the CU is responsible for handling non-real time protocols and services, implementing the functions of the radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC), medium access control (media access control, MAC) and Physical (PHY) layers.

In the embodiment of the present application, the Network device may be a Core Network, which may be an evolved packet Core Network (evolved packet Core, EPC for short), a 5G Core Network (5G Core Network), or may be a new Core Network in a future communication system. The 5G Core Network is composed of a set of devices, and implements an access and mobility management function (Access and Mobility Management Function, AMF) for mobility management and the like, a user plane function (User Plane Function, UPF) for providing packet routing forwarding and QoS (Quality of Service) management and the like, a session management function (Session Management Function, SMF) for providing session management, IP address allocation and management and the like. The EPC may be composed of an MME providing functions of mobility management, gateway selection, etc., a Serving Gateway (S-GW) providing functions of packet forwarding, etc., a PDN Gateway (P-GW) providing functions of terminal address allocation, rate control, etc.

Referring to fig. 2, fig. 2 provides a switching method of transmission links, where in the embodiment of the present application, two transmission links are a first link and a second link, and for convenience of explanation, the first link is named leg1, and the second link is named leg2; wherein the first link leg1 is a first transmission mode, and the second link leg2 is a second transmission mode. The first transmission mode may be different from the second transmission mode, for example, the first transmission mode is a unicast mode (PTP transmission mode) and the second transmission mode is a multicast mode (PTM transmission mode), although the reverse is also possible. The method may be implemented in a communication system as shown in fig. 1, and the method as shown in fig. 2 may be performed by a terminal in the communication system as shown in fig. 1, and the method as shown in fig. 2 includes the steps of:

step S201, the terminal receives MBS (Multicast/Broadcast Service) data packets at a first link leg1;

in an alternative solution, the leg1 may be a unicast link, and of course, in practical application, the leg1 may also be a multicast link.

Step S202, when the terminal determines that the first preset condition is met, the terminal switches the leg1 into a second link leg2 to receive the MBS data packet.

In an alternative solution, the determining, by the terminal, that the first preset condition is met may specifically include:

if the identification of the MBS data packet received by the terminal at the leg2 is the same as the identification of the MBS data packet received by the leg1, determining that a first preset condition is met; the identity of the terminal receiving the MBS data packet at leg2 is the same as the identity of the MBS data packet received by leg1, and for RLC AM mode, the void (gap) of the terminal receiving the data packet is filled, i.e. no loss of the received data packet is detected.

The identifier of the data packet may be a data packet ID or a sequence number SN (Sequence Number) of a protocol layer, where the sequence number of the data packet may be a data packet sequence number of an SDAP layer, a PDCP layer, or an RLC layer, and of course, in practical applications, other types of identifiers capable of distinguishing data packets may be used.

Or if the terminal comprises a timer1, the timer is used for timing the transmission time of the leg1, and if the timer1 is overtime, the first preset condition is determined to be met. The timer1 is started when the terminal prepares or starts to receive data in the leg2 or receives a first data packet from the leg2, or starts after receiving an instruction of the link switching from the network side.

In an alternative solution, the timer1 may be a preconfigured timer, and of course, in practical application, the timer may also be a timer configured on the network side, for example, the timer may be configured through a system message or RRC signaling. Configuring the timer through system messages or RRC signaling can increase the flexibility of the timer.

The technical scheme provided by the application is that MBS data packets are received in a first link leg1; and when the terminal determines that the first preset condition is met, the terminal switches the leg1 into a second link leg2 to receive the MBS data packet. Therefore, the soft handoff of the transmission mode can be executed on the MBS data packet, the network time delay is reduced, the transmission reliability of the data packet is improved, and the network performance and the user experience are improved.

In an alternative solution, before the terminal switches the leg1 to the second link leg2 to receive the MBS data packet, the method may further include:

the terminal sends a notification message to the network side, and the communication message may include: an indication that the first preset condition is satisfied.

The notification message may be a message existing in the system, for example, an RRC message, a MAC CE, a PDCP/SDAP/RLC control PDU, or the like. Of course, in practical applications, this can also be achieved by a message for the new configuration. The present application is not limited to the specific expression form of the notification message, and only needs that the notification message carries an indication that the first preset condition is satisfied. The indication may be a special string or a predetermined specific symbol, etc.

In an alternative, the method may further include:

the terminal receives a notification response sent by the network side, and the notification response may further include: deactivating the leg1 or releasing the leg1, and the terminal performs a deactivation or release operation on the leg1 according to the notification response.

The notification response includes: RRC message, MAC CE or DCI.

If the notification response contains release leg1, then the RRC message is prioritized because of the poor flexibility of RRC messages relative to MAC CEs; if leg1 is deactivated, MAC CE may be prioritized. The deactivation of a link means that the base station no longer transmits data on the link, the terminal no longer receives data on the link, but the configuration information of the link is reserved.

The technical scheme is that the terminal is prevented from occupying the network resources of the leg1 for a long time, and the terminal occupies certain network resources for the deactivation of the leg1, but the method has the advantages that the leg1 can be re-started through an activation instruction, the flexibility is high, the network resources of the leg1 are not required to be reconfigured, the network resources are not occupied for the release operation, namely, other terminals can use the network resources of the leg1, the method has the disadvantage of inflexibility, and if the leg2 needs to be switched, the network side needs to reconfigure a new link for the terminal.

In an alternative, the method may further include:

the terminal deactivates leg1 or releases leg1 when time1 times out.

Example 1

In a first embodiment of the present application, two transmission links, that is, a first link (ptpleg) and a second link (PTM leg), are provided, where the PTM leg refers to a link for transmitting data by multicast/broadcast, and each leg corresponds to one or more protocol entities of different protocol layers, for example, one or more of physical layer protocol entities, MAC (Medium Access Control), RLC (Radio Link Control), PDCP (Packet Data Convergence Protocol), SDAP (Service Data Adaptation Protocol), etc. PTP leg refers to a link for transmitting data through unicast, and each leg corresponds to one or more protocol entities of different protocol layers, such as one or more of physical layer protocol entities, MAC, RLC, PDCP, SDAP, etc. The protocol architecture scenario provided in the embodiment of the present application is shown in fig. 3, and the embodiment may be executed in the communication system shown in fig. 1, where the method is shown in fig. 4, and may specifically include:

step S400, the base station sends MBS data packets to the terminal at PTP leg, the base station sends MBS data packets at PTM leg,

step S401, when PTM leg receives 15 th MBS data packet, the terminal confirms to meet the preset condition, stop receiving MBS data packet from PTP leg, and send notification message (MAC CE) to the base station;

step S402, after receiving the notification message, the base station deactivates or releases the PTP leg.

The technical scheme provided by the application is that MBS data packets are received in PTP leg; and when the terminal determines that the first preset condition is met, the terminal switches the PTP leg to the PTM leg to receive the MBS data packet. Therefore, the soft handoff of the transmission mode can be executed on the MBS data packet, the network time delay is reduced, the transmission reliability of the data packet is improved, and the network performance and the user experience are improved.

Example two

In a second embodiment of the present application, two transmission links, that is, a first link (ptpleg) and a second link (PTM leg), are provided, where the PTM leg refers to a link for transmitting data in a multicast/broadcast manner, and each leg corresponds to one or more protocol entities of different protocol layers, for example, one or more of physical layer protocol entities, MAC (Medium Access Control), RLC (Radio Link Control), PDCP (Packet Data Convergence Protocol), SDAP (Service Data Adaptation Protocol), etc. PTP leg refers to a link for transmitting data through unicast, and each leg corresponds to one or more protocol entities of different protocol layers, such as one or more of physical layer protocol entities, MAC, RLC, PDCP, SDAP, etc. The protocol architecture scenario provided in the embodiment of the present application is shown in fig. 5, and the embodiment may be executed in the communication system shown in fig. 1, where the method is shown in fig. 6, and may specifically include:

step S600, the base station sends MBS data packet to the terminal at PTP leg, the base station sends MBS data packet at PTM leg,

step S601, when PTM leg receives MBS data package, the terminal starts timer1, when timer1 times out, it is determined that preset condition is satisfied, receiving MBS data package from PTP leg is stopped, and notice message is sent to base station;

step S602, after receiving the notification message, the base station deactivates or releases the PTP leg.

The technical scheme provided by the application is that MBS data packets are received in PTP leg; when the terminal determines that the timer1 is overtime and meets a first preset condition, the terminal switches PTP leg to PTM leg to receive the MBS data packet. Therefore, the soft handoff of the transmission mode can be executed on the MBS data packet, the network time delay is reduced, the transmission reliability of the data packet is improved, and the network performance and the user experience are improved.

It will be appreciated that the user equipment, in order to achieve the above described functions, comprises corresponding hardware and/or software modules for performing the respective functions. The steps of an algorithm for each example described in connection with the embodiments disclosed herein may be embodied in hardware or a combination of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application in conjunction with the embodiments, but such implementation is not to be considered as outside the scope of this application.

The present embodiment may divide the functional modules of the electronic device according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules described above may be implemented in hardware. It should be noted that, in this embodiment, the division of the modules is schematic, only one logic function is divided, and another division manner may be implemented in actual implementation.

In the case of dividing respective functional modules with respective functions, fig. 7 shows a schematic diagram of a user equipment, and as shown in fig. 7, the terminal 700 may include: a communication unit 701 and a processing unit 702.

Wherein the communication unit 701 may be configured to support the user equipment to perform the above-described step 201, etc., and/or other processes for the techniques described herein.

The processing unit 702 may be used to support user equipment in performing step 202, etc. described above, and/or other processes for the techniques described herein.

It should be noted that, all relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein.

The electronic device provided in this embodiment is configured to perform the method shown in fig. 2, so that the same effects as those of the implementation method can be achieved.

In case of an integrated unit, the user equipment may comprise a processing module, a storage module and a communication module. The processing module may be configured to control and manage actions of the user equipment, for example, may be configured to support the electronic device to perform the steps performed by the communication unit 701 and the processing unit 702. The memory module may be used to support the electronic device to execute stored program code, data, etc. And the communication module can be used for supporting the communication between the electronic device and other devices.

Wherein the processing module may be a processor or a controller. Which may implement or perform the various exemplary logic blocks, modules, and circuits described in connection with this disclosure. A processor may also be a combination that performs computing functions, e.g., including one or more microprocessors, digital signal processing (digital signal processing, DSP) and microprocessor combinations, and the like. The memory module may be a memory. The communication module can be a radio frequency circuit, a Bluetooth chip, a Wi-Fi chip and other equipment which interact with other electronic equipment.

It should be understood that the connection relationship between the modules illustrated in the embodiments of the present application is only illustrative, and does not limit the structure of the user equipment. In other embodiments of the present application, the ue may also use different interfacing manners in the foregoing embodiments, or a combination of multiple interfacing manners.

Referring to fig. 8, fig. 8 is an electronic device 80 provided in an embodiment of the present application, where the terminal 80 includes a processor 801, a memory 802, and a communication interface 803, and the processor 801, the memory 802, and the communication interface 803 are connected to each other by a bus.

The memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically erasable ROM (electrically EPROM, EEPROM), or a flash memory. The volatile memory may be a random access memory (random access memory, RAM for short) which acts as an external cache. By way of example but not limitation, many forms of random access memory (random access memory, abbreviated as RAM) are available, such as static random access memory (static RAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, abbreviated as DDR SDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus random access memory (direct rambus RAM, abbreviated as DR RAM).

The processor 801 may be one or more central processing units (central processing unit, CPU), and in the case where the processor 801 is one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The processor 801 may include one or more processing units, such as: the processing units may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), an image signal processor (image signal processor, ISP), a controller, a video codec, a digital signal processor (digital signal processor, DSP), a baseband processor, and/or a neural network processor (neural-network processing unit, NPU), etc. Wherein the different processing units may be separate components or may be integrated in one or more processors. In some embodiments, the user equipment may also include one or more processing units. The controller can generate operation control signals according to the instruction operation codes and the time sequence signals to finish the control of instruction fetching and instruction execution. In other embodiments, memory may also be provided in the processing unit for storing instructions and data. The memory in the processing unit may be a cache memory, for example. The memory may hold instructions or data that the processing unit has just used or recycled. If the processing unit needs to reuse the instruction or data, it can be called directly from the memory. In this way, repeated accesses are avoided, and the latency of the processing unit is reduced, thereby improving the efficiency of the user equipment in processing data or executing instructions.

In some embodiments, the processor 801 may include one or more interfaces. The interfaces may include inter-integrated circuit (inter-integrated circuit, I2C) interfaces, inter-integrated circuit audio (inter-integrated circuit sound, I2S) interfaces, pulse code modulation (pulse code modulation, PCM) interfaces, universal asynchronous receiver transmitter (universal asynchronous receiver/transmitter, UART) interfaces, mobile industry processor interfaces (mobile industry processor interface, MIPI), general-purpose input/output (GPIO) interfaces, SIM card interfaces, and/or USB interfaces, among others. The USB interface is an interface conforming to the USB standard specification, and specifically may be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface can be used for connecting a charger to charge the user equipment and can also be used for transmitting data between the user equipment and the peripheral equipment. The USB interface can also be used for connecting with a headset, and playing audio through the headset.

The processor 801 in the electronic device 80 is arranged to read the computer program code stored in said memory 802, performing the following operations:

receiving MBS data packets at a first link leg1;

when the first preset condition is determined to be met, the terminal switches the leg1 into a second link leg2 to receive the MBS data packet;

the first link leg1 is a first transmission mode, and the second link leg2 is a second transmission mode.

All relevant contents of each scenario related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein.

The embodiment of the application also provides a chip system, which comprises at least one processor, a memory and an interface circuit, wherein the memory, the transceiver and the at least one processor are interconnected through a circuit, and a computer program is stored in the at least one memory; the computer program, when executed by the processor, implements the method flows shown in fig. 2, 4, and 6.

Embodiments of the present application also provide a computer readable storage medium having a computer program stored therein, which when run on a network device, implements the method flows shown in fig. 2, 4, and 6.

Embodiments of the present application also provide a computer program product, which when run on a terminal, implements the method flows shown in fig. 2, 4, and 6.

Embodiments of the present application also provide a terminal comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the methods of the embodiments shown in fig. 2, 4, 6.

The foregoing description of the embodiments of the present application has been presented primarily in terms of a method-side implementation. It will be appreciated that the electronic device, in order to achieve the above-described functions, includes corresponding hardware structures and/or software templates for performing the respective functions. Those of skill in the art will readily appreciate that the elements and algorithm steps described in connection with the embodiments disclosed herein may be embodied as hardware or a combination of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The embodiment of the application may divide the functional units of the electronic device according to the above method example, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated in one processing unit. The integrated units may be implemented in hardware or in software functional units. It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice.

It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all of the preferred embodiments, and that the acts and templates referred to are not necessarily required for the present application.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, such as the above-described division of units, merely a division of logic functions, and there may be additional manners of dividing in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, or may be in electrical or other forms.

The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units described above, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a memory, including several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the above-mentioned method of the various embodiments of the present application. And the aforementioned memory includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Those of ordinary skill in the art will appreciate that all or a portion of the steps in the various methods of the above embodiments may be implemented by a program that instructs associated hardware, and the program may be stored in a computer readable memory, which may include: flash disk, read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.

Claims

1. A method for switching transmission links, the method comprising the steps of:

the terminal receives MBS data packets at a first link leg1;

the first link leg1 is a first transmission mode, and the second link leg2 is a second transmission mode; the terminal determining that the first preset condition is met specifically includes:

if the identification of the MBS data packet received by the terminal at the leg2 is the same as the identification of the MBS data packet received by the leg1, determining that a first preset condition is met;

or if the terminal comprises a timer1, the timer is used for timing the transmission time of the leg1, and if the timer1 is overtime, the first preset condition is determined to be met;

the first transmission mode is a point-to-point PTP transmission mode, and the second transmission mode is a point-to-multipoint PTM transmission mode;

or the first transmission mode is a point-to-multipoint PTM transmission mode, and the second transmission mode is a point-to-point PTP transmission mode.

2. The method of claim 1, wherein before the method terminal switches leg1 to the second link leg2 to receive the MBS data packet, further comprising:

if the terminal determines that the first preset condition is met, the terminal sends a notification message to the network side, wherein the notification message comprises: an indication that the first preset condition is satisfied.

3. The method of claim 1, wherein before the method terminal switches leg1 to the second link leg2 to receive the MBS data packet, further comprising:

the terminal receives a notification response sent by the network side, wherein the notification response comprises the following steps: deactivating leg1 or releasing leg1;

the terminal either deactivates leg1 or releases leg1 in response to the notification.

4. The method of claim 1, wherein if the timer1 times out, the terminal deactivates leg1 or releases leg1.

5. The method of claim 2, wherein the step of determining the position of the substrate comprises,

the notification response includes: RRC message, MAC CE or DCI.

6. A user equipment, UE, characterized in that the UE comprises:

the processing unit is used for switching the leg1 into a second link leg2 to receive the MBS data packet when the first preset condition is met; the first link leg1 is a first transmission mode, and the second link leg2 is a second transmission mode;

the terminal determining that the first preset condition is met specifically includes:

7. A terminal comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-5.

8. A chip system comprising at least one processor, a memory and an interface circuit, said memory, said interface circuit and said at least one processor being interconnected by wires, said at least one memory having a computer program stored therein; the computer program, when executed by the processor, implements the method of any of claims 1-5.

9. A computer readable storage medium having stored therein a computer program which, when run on a user equipment, performs the method of any of claims 1-5.