WO2021155584A1 - 通信方式切换方法、装置及其设备 - Google Patents

通信方式切换方法、装置及其设备 Download PDF

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Publication number
WO2021155584A1
WO2021155584A1 PCT/CN2020/074519 CN2020074519W WO2021155584A1 WO 2021155584 A1 WO2021155584 A1 WO 2021155584A1 CN 2020074519 W CN2020074519 W CN 2020074519W WO 2021155584 A1 WO2021155584 A1 WO 2021155584A1
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WIPO (PCT)
Prior art keywords
communication mode
user equipment
pdcp
network device
network
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PCT/CN2020/074519
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English (en)
French (fr)
Inventor
卢前溪
王淑坤
Original Assignee
Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2020/074519 priority Critical patent/WO2021155584A1/zh
Priority to CN202310083403.6A priority patent/CN116318540A/zh
Priority to EP20917671.8A priority patent/EP4087285A4/en
Priority to PCT/CN2020/120230 priority patent/WO2021155673A1/zh
Priority to CN202080095370.1A priority patent/CN115053542A/zh
Publication of WO2021155584A1 publication Critical patent/WO2021155584A1/zh
Priority to US17/881,062 priority patent/US20220377608A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0007—Control or signalling for completing the hand-off for multicast or broadcast services, e.g. MBMS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/02—Buffering or recovering information during reselection ; Modification of the traffic flow during hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • the present invention relates to the field of communication technology, in particular to the technical field of communication mode conversion.
  • Multimedia Broadcast Multicast Service is a service introduced in 3GPP R6 (Release 6).
  • Multimedia broadcast and multicast service is a technology that transmits data from one data source to multiple user equipments by sharing network resources. It can effectively use network resources while providing multimedia services to achieve higher-rate multimedia service broadcast and multicast. (Also known as multicast).
  • 3GPP Due to the low spectrum efficiency of MBMS in 3GPP R6, it is not sufficient to effectively carry and support the operation of mobile TV-type services. Therefore, in LTE (Long Term Evolution), 3GPP clearly proposes to enhance the ability to support downlink high-speed multimedia broadcast and multicast services, and determines the design requirements for the physical layer and air interface.
  • LTE Long Term Evolution
  • E-MBMS evolved MBMS
  • SFN Single Frequency Network
  • SC-PTM Single Cell Point To Multiploint, single cell point-to-multipoint transmission
  • SC-PTM is based on the MBMS network architecture.
  • MCE Multi-cell/multicast Coordination Entity
  • MBSFN Multimedia Broadcast multicast service Single Frequency Network, single frequency network multicast/broadcast
  • the UE can receive services in a multicast manner.
  • the communication method of receiving services will change, for example: move from a cell that supports multicast services to a cell that does not support multicast services, or move from a cell that does not support multicast services.
  • the UE moves from a location where it cannot receive multicast signals to a location where it can receive multicast signals, or the UE moves from a location where it can receive multicast signals to The location where the multicast signal cannot be received may lead to a change in the communication method. Therefore, the communication method needs to be switched.
  • the invention provides a communication mode switching method, equipment and device.
  • a communication mode switching method applied to a network device characterized in that the method includes: sending a packet data aggregation protocol PDCP data transmission status of a user equipment in a first communication mode to a network device in a target cell; wherein the target The network equipment of the cell uses the second communication mode to deliver the service to the user equipment according to the PDCP data transmission status.
  • a communication mode switching method applied to a user equipment includes: reporting a PDCP data receiving state in a first communication mode; receiving a service issued by a switched network device using a second communication mode.
  • a communication mode switching device applied to a network device, comprising: a forwarding module for sending the PDCP data transmission status of the user equipment in the first communication mode to another network device; wherein the other network device is based on the DCP In the data sending state, the second communication mode is used to send the service to the user equipment.
  • a communication mode switching device applied to user equipment, comprising: a reporting module for reporting the PDCP data reception status in a first communication mode to the network equipment after the switching of the communication mode; a service receiving module for receiving switching The subsequent network device delivers the service through the second communication mode.
  • a network device includes: a processor, a memory, and a network interface; the processor calls the program in the memory, executes any one of the communication mode switching methods applied to the network device in this application, and passes the execution result through all The network interface is sent out.
  • a user equipment includes: a processor, a memory, and a network interface; the processor calls a program in the memory, executes any one of the communication mode switching methods applied to the user equipment in this application, and passes the execution result through all The network interface is sent out.
  • a chip includes a processor, which is used to call and run a computer program from a memory, and a device installed with the chip executes any one of the communication mode switching methods of this application.
  • a computer-readable storage medium wherein a program for an uplink transmission method is stored on the computer-readable storage medium, and when the program for the uplink transmission method is executed by a processor, any one of the communication modes of the present application is switched method.
  • a computer program product wherein the computer program product is stored in a non-transitory computer-readable storage medium, and when the computer program is executed, it implements any one of the communication mode switching methods of the present application.
  • the beneficial effect of the present application is that the PDCP data transmission status of the user equipment in the first communication mode is sent to the network equipment after the communication mode is switched, thereby ensuring that the continuity of the PDCP serial number is maintained during the communication mode switching process, thereby Realize the communication mode switching at the PCDP layer, which can be lossless switching.
  • FIG. 1A is a system architecture diagram applied by the embodiment of this application.
  • FIG. 1B is a diagram of another system architecture applied by the embodiment of this application.
  • FIG. 2 is a flowchart of a communication mode switching method provided in Embodiment 1 of this application.
  • FIG. 3 is an interaction diagram of a communication mode switching method provided by the second embodiment of this application.
  • FIG. 4 is an interaction diagram of a communication mode switching method provided in the third embodiment of this application.
  • FIG. 5 is a block diagram of a communication mode switching device applied to network equipment according to the fourth embodiment of the application.
  • FIG. 6 is a block diagram of a communication mode switching apparatus applied to user equipment according to the fifth embodiment of this application.
  • FIG. 7 is a schematic structural diagram of a communication mode switching device provided in Embodiment 6 of the present application.
  • system and “network” in this article are often used interchangeably in this article.
  • the term “and/or” in this article is only an association relationship describing the associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations.
  • the character "/" in this text generally indicates that the associated objects before and after are in an "or” relationship.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B based on A does not mean that B is determined only based on A, and B can also be determined based on A and/or other information.
  • the wireless communication system 100 includes: a network device 110 and at least one user equipment 120 located within the coverage area of the network device 110.
  • the network device 110 sends trigger signaling to the user equipment 120 to trigger the user equipment 120 to report the PDCP status.
  • the wireless communication system 100 includes: network devices 110A and 110B, and at least one user equipment 120 that moves within the coverage area of the network devices 110A and 110B.
  • the network device 110A sends trigger signaling to the user equipment 120 to trigger the user equipment 120 to report the PDCP status to the network device 110B.
  • the wireless communication system 100 may include multiple network devices, and the coverage of each network device may include other user equipment, which is not limited in the embodiments of the present application.
  • the network devices 110, 110A, and 110B may provide communication coverage for a specific geographic area, and may communicate with user equipment (for example, UE) located in the coverage area.
  • the network device 100 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or the wireless controller in the Cloud Radio Access Network (CRAN), or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, Network-side equipment in the 5G network or network equipment in the public land mobile network (Public Land Mobile Network, PLMN) that will evolve in the future.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNB evolved base station
  • CRAN Cloud Radio Access Network
  • the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, Network-side equipment in the 5G network or network equipment in the public land mobile
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • New Radio, NR the evolution system of the NR system, the LTE (LTE-based access to unlicensed spectrum, LTE-U) system on the unlicensed spectrum, the NR (NR-based access to unlicensed spectrum, on the unlicensed spectrum, NR-U) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), next-generation communication systems or other communication systems, etc.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • New Radio, NR the evolution system of the NR system, the LTE (LTE-based access to unlicense
  • the user equipment 120 may be mobile or fixed.
  • the user equipment 120 may refer to an access terminal, user equipment (User Equipment, UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user equipment, terminal, wireless Communication equipment, user agent or user device.
  • the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, user equipment in 5G networks, or user equipment in the future evolution of PLMN, etc.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the communication system in the embodiments of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, can also be applied to a dual connectivity (DC) scenario, and can also be applied to a standalone (SA) deployment.
  • CA Carrier Aggregation
  • DC dual connectivity
  • SA standalone
  • the network device uses the first communication mode to send services to the user equipment; when a communication mode needs to be switched, the communication mode switching mechanism is triggered to switch to the second communication mode to send services to the user.
  • Circumstances that trigger communication mode switching include but are not limited to one of the following situations:
  • the UE is in a cell that supports MBMS services and receives services in multicast mode in the cell. If the UE detects that the MBSFN signal is weak, it needs to switch the communication mode of receiving services from multicast to unicast; or,
  • the UE is in a cell that can support the MBMS service, but because the MBSFN signal is weak, it uses unicast to receive the service. If the UE detects that the MBSFN signal is enhanced, it can switch the communication mode of the receiving service from unicast to multicast; or,
  • the UE When the UE moves from a cell that supports MBMS services to another cell that does not support MBMS services, it needs to switch the communication mode of receiving services from multicast to unicast; or,
  • the UE moves from a cell that does not support the MBMS service to a cell that supports the MBMS service, and can switch the communication mode of receiving the service from unicast to multicast.
  • FIG. 2 is a communication mode switching method provided in the first embodiment of this application.
  • the method includes:
  • the network device sends the PDCP (Packet Data Convergence Protocol) data transmission status of the user equipment in the first communication mode, and/or, the user equipment sends the PDCP data reception status in the first communication mode;
  • PDCP Packet Data Convergence Protocol
  • S220 according to the data sending state and/or the data receiving state, use the second communication mode to send the service to the user equipment; this step is executed by the network device that receives the data sending state and/or the data receiving state, specifically, When the user terminal moves between two cells, it is executed by the network equipment of the target cell, and when the user terminal moves in a cell, it is executed by the network equipment of the cell.
  • the network device sends the PDCP data transmission status and/or the user equipment sends the PDCP data reception status to the network device after the communication mode is switched, which can ensure the continuity of the PDCP serial number and realize lossless switching at the PDCP layer .
  • the network equipment after the communication mode is switched is the network equipment of the target cell; when the user realizes the communication mode switching in a cell, the communication mode is switched
  • the latter network equipment is regarded as the network equipment of this cell. This is the case in the following embodiments of this application, and will not be repeated here.
  • both the first communication mode and the second communication mode may be unicast or multicast.
  • the first communication method is multicast and the second communication method is unicast; or, the first communication method is unicast and the second communication method is multicast; or, when the user equipment moves from one cell to another In one cell, both the first communication mode and the second communication mode are unicast or both are multicast.
  • the PDCP data transmission state or the PDCP data reception state of the user equipment in the first communication mode is sent to the network device, that is, the communication mode switching is performed through the PCDP layer to achieve lossless switching.
  • the switching at the PDCP layer is generally implemented by the access layer network element, and the unicast-multicast switching at the access layer network element can reduce the network elements involved in the switching process, so it can reduce the switching time. Extension.
  • FIG. 3 is a communication mode switching method provided for the second embodiment of the application.
  • This second embodiment is a situation where the first embodiment described above is applied to a user equipment moving across cells. That is, the user equipment moves from the source cell to the target cell.
  • the network device of the source cell uses the first communication mode to send services to the user equipment
  • the network device of the target cell uses the second communication mode to send services to the user equipment.
  • the network equipment before the communication mode switching is the network equipment of the source cell
  • the network equipment after the switching is the network equipment of the target cell.
  • the method includes:
  • the network equipment of the source cell sends the PDCP data transmission status of the user equipment in the first communication mode to the network equipment of the target cell;
  • S340 The network equipment of the target cell sends the service to the user equipment in the second communication manner.
  • the network equipment of the target cell uses the second communication mode to send the service to the user equipment according to the PDCP data transmission status.
  • the PDCP data transmission status includes at least one of the following:
  • the PDCP data transmission status may also include at least one of the following:
  • the network equipment of the source cell has sent, but has not received the PDCP SN (PDCP sequence number) associated with the data confirmed by the user equipment;
  • the network device of the source cell has sent, but has not received the input amount of data association confirmed by the user equipment except for PDCP SN.
  • the user equipment may also report its PCDP status to the network equipment of the target cell.
  • the method may further include:
  • S320 trigger the user equipment to report the PDCP status;
  • sequence between S320 and S310 is not limited, and S320 can be before S310, after S310, or at the same time as S310;
  • S330 The user equipment sends the PDCP data reception status to the network equipment of the target cell.
  • S340 specifically includes:
  • the network equipment of the target cell uses the second communication mode to send the service to the user equipment according to the PDCP data transmission status and/or the PDCP data reception status.
  • S320 triggers the user equipment to report the PDCP status, which specifically includes:
  • the RLC mode of the user equipment in the network equipment of the source cell and/or the network equipment of the target cell trigger the user equipment to report PDCP status; optionally, if it is in AM mode, trigger the user equipment to report PDCP Status; or,
  • the configuration information issued by the network equipment of the source cell and/or the network equipment of the target cell triggers the user equipment to report the PDCP status.
  • the PDCP data receiving state includes at least one of the following:
  • the user equipment has correctly received at least one data associated with the network equipment of the source cell (that is, in the first communication mode) for encryption/encryption input, or the input is excluding PDCP SN Part; that is,
  • the user equipment does not correctly receive at least one PDCP SN associated with the data under the network equipment of the source cell (that is, in the first communication mode);
  • the user equipment does not correctly receive at least one data associated with the network equipment of the source cell (that is, in the first communication mode) for encryption/encryption input, or the input is excluding PDCP SN part.
  • the network equipment of the source cell sends the PDCP data transmission status of the user equipment in the first communication mode to the network equipment of the target cell, thereby ensuring that the PDCP sequence numbers of the user equipment are continuous, and the target cell
  • the network device in the network device can switch to the second communication state losslessly according to the PDCP data transmission state, and continue to send the service to the user equipment through the second communication mode.
  • the switching at the PDCP layer is generally implemented by the access layer network element, and the unicast-multicast switching at the access layer network element can reduce the network elements involved in the switching process, so it can reduce the switching time. Extension.
  • FIG. 4 is a communication mode switching method provided for the third embodiment of the application.
  • the third embodiment is a situation in which the first embodiment described above is applied to the user equipment in the same cell to switch the communication mode.
  • the network device before the communication mode switch and the network device after the switch are the same network device.
  • the method includes:
  • S420 The user equipment sends the PDCP data receiving state in the first communication mode to the network equipment;
  • the network device uses the second communication mode to send the service to the user equipment.
  • the network device uses the second communication mode to send the service to the user equipment according to the PDCP data transmission status of the user equipment in the first communication mode and/or the PDCP data reception status.
  • the network device switches to the second communication mode to deliver the service according to the PDCP data sending status and/or the PDCP data receiving status sent by the user equipment, which can ensure the continuity of the PDCP serial number.
  • the PDCP data transmission status includes at least one of the following:
  • the PDCP data transmission status may also include at least one of the following:
  • the network device has sent, but has not received the PDCP SN (PDCP serial number) associated with the data confirmed by the user device;
  • the network device has sent, but has not received the input amount for encryption/complete protection of the data association confirmed by the user device, or the input amount except for PDCP SN.
  • the method may further include:
  • S410 Trigger the user equipment to report the PDCP state.
  • S410 triggers the user equipment to report the PDCP status, which specifically includes:
  • the RLC mode of the user equipment in the network device determine to trigger the user equipment to report the PDCP status; optionally, if it is in the AM mode, the user equipment reports the PDCP status; or,
  • the configuration information issued by the network device triggers the user equipment to report the PDCP status.
  • the PDCP data receiving state includes at least one of the following:
  • the user equipment has correctly received at least one data associated input volume for encryption/complete protection in the first communication mode of the network device, or the input volume excluding PDCP SN;
  • the user equipment does not correctly receive at least one PDCP SN associated with the data in the first communication mode of the network device;
  • the user equipment does not correctly receive at least one data-related input volume for encryption/complete protection in the first communication mode of the network device, or the input volume excluding PDCP SN.
  • the network device can send services to the user equipment through the second communication mode according to the PDCP data transmission status of the user equipment in the first communication mode.
  • lossless switching of communication methods can be realized at the PCDP layer.
  • the switching at the PDCP layer is generally implemented by the access layer network element, and the unicast-multicast switching at the access layer network element can reduce the network elements involved in the switching process, so it can reduce the switching time. Extension.
  • FIG. 5 is a block diagram of a communication mode switching device 500 provided in the fourth embodiment of the present application.
  • the communication mode switching device is applied to network equipment, especially network equipment at the access layer.
  • the communication mode switching device includes:
  • the forwarding module 510 is configured to send the PDCP data transmission state of the user equipment in the first communication mode to another network device.
  • the network device of the source cell needs to send the PDCP data transmission status to the network device of the target cell (that is, the other network device), so that the network device of the target cell can be According to the PDCP data transmission status, the communication mode is switched.
  • the communication mode switching device further includes:
  • the trigger module 520 is used to trigger the user equipment to report the PDCP status.
  • the trigger module 520 is specifically configured to deliver configuration information to the user equipment to trigger the user equipment to report the PDCP state.
  • the communication mode switching device further includes:
  • the receiving module 530 is configured to receive the PDCP data transmission status of the user equipment in the first communication mode sent by another network device, and/or the PDCP data reception status reported by the user equipment;
  • the sending module 540 is configured to use the second communication mode to deliver a service to the user equipment according to the PDCP data sending status and/or the PDCP data receiving status. Wherein, when the receiving module 530 only receives the PDCP data transmission status sent by the other network device, the sending module 540 uses the second communication mode to deliver the service to the user equipment according to the PDCP data transmission status; When the module 530 receives the PDCP data sending status and the PDCP data receiving status, the sending module 540 uses the second communication mode to deliver the service to the user equipment according to the PDCP data sending status and/or the PDCP data receiving status.
  • the communication mode switching apparatus transmits the PDCP data transmission status of the user equipment in the first communication mode to the network equipment of another cell, so that the network equipment of the other cell can be based on the PDCP data transmission status As well as the serial number of the user equipment, the service is sent to the user equipment through the second communication method.
  • the communication mode is switched through the PCDP layer, and lossless switching can be realized.
  • the communication mode switching device is generally applied to the access layer network element, and unicast/multicast switching is performed at the access layer network element, which can reduce the network elements involved in the switching process. Therefore, the handover delay can be reduced.
  • FIG. 6 is a block diagram of a communication mode switching device 600 provided in the fifth embodiment of the present application.
  • the communication mode switching device is applied to user equipment.
  • the communication mode switching device includes:
  • the reporting module 620 is configured to report the PDCP data receiving state in the first communication mode to the network device after the communication mode is switched;
  • the service receiving module 630 is configured to receive the service delivered by the network device through the second communication mode.
  • the service receiving module 630 is specifically configured to receive the PDCP data transmission status and/or the PDCP data reception status of the communication mode switching device in the first communication mode according to the network device, which is issued through the second communication mode. business.
  • the communication mode switching apparatus further includes: an activation module 610, configured to trigger the user equipment to report the PDCP state.
  • the activation module 610 is specifically configured to determine to trigger the user equipment to report the PDCP state according to the RLC mode of the user equipment in the network device; or, the configuration information issued by the network device triggers the user equipment to report PDCP status.
  • the activation module 610 is specifically configured to report the PDCP state of the user equipment if the RLC mode of the user equipment in the network device is the AM mode.
  • the reporting module 620 is specifically configured to report the PDCP data receiving state in the first communication mode to the network device after the communication mode is switched according to one of the following conditions:
  • the RLC mode of the user equipment under the network device optionally, if the RLC mode of the user equipment under the network device is AM mode, the user equipment reports the PDCP status; or,
  • the trigger reporting module 620 when the user equipment moves across cells and switches the communication mode, the trigger reporting module 620 receives the trigger signaling received by the network device of the source cell, and reports the PDCP data reception in the first communication mode to the network device of the target cell Status, and the network equipment of the target cell delivers the service through the second communication mode.
  • the trigger reporting module 620 receives the trigger signaling of the network equipment in the cell, and reports the PDCP data reception status in the first communication mode to the network equipment in the cell.
  • the network equipment in this cell delivers services through the second communication mode.
  • the communication mode switching device keeps the PDCP serial number unchanged during the switching process, and the network device changes the PDCP data transmission status in the first communication state and the serial number of the user equipment
  • the communication mode of the delivered service is switched to the second communication mode. That is, in the fifth embodiment of the present application, communication mode switching is performed through the PCDP layer, so that lossless switching can be realized.
  • the switching at the PDCP layer is generally implemented by the access layer network element, and the unicast-multicast switching at the access layer network element can reduce the network elements involved in the switching process, so it can reduce the switching time. Extension.
  • FIG. 7 is a schematic structural diagram of a communication mode switching device provided in Embodiment 6 of the present application.
  • the communication mode switching device 700 includes a processor 710, a memory 720, and a network interface 730.
  • the processor 710 calls the program in the memory 720 to execute the corresponding process implemented by the network device in any one of the communication mode switching methods provided in the first to third embodiments, or executes any one of the communications provided in the first to third embodiments.
  • the corresponding process implemented by the user equipment in the mode switching method, and the execution result is sent out through the network interface 730.
  • the processor 710 may be an independent component, or may be a collective name for multiple processing elements. For example, it may be a CPU, an ASIC, or one or more integrated circuits configured to implement the above methods, such as at least one microprocessor DSP, or at least one programmable gate FPGA.

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Abstract

通信方式切换方法、装置及设备。其应用于网络设备的方法包括：发送用户设备在第一通信方式下的分组数据聚合协议PDCP数据发送状态至目标小区的网络设备；其中，该目标小区的网络设备根据该PDCP数据发送状态采用第二通信方式给用户设备下发业务。本申请根据用户设备在第一通信方式下的PDCP数据发送状态切换至第二通信方式收发业务，从而实现在PCDP层进行通信方式切换，由此可实现无损切换，并降低切换时延。

Description

通信方式切换方法、装置及其设备 技术领域
本发明涉及通信技术领域，尤其涉及通信方式转换的技术领域。
背景技术
MBMS(Multimedia Broadcast Multicast Service，多媒体广播多播服务)是在3GPP R6(Release 6)中引入的一项业务。多媒体广播多播服务是一种通过共享网络资源从一个数据源向多个用户设备传送数据的技术，在提供多媒体业务的同时能有效地利用网络资源，实现较高速率的多媒体业务广播和多播(亦称组播)。
由于3GPP R6中的MBMS频谱效率较低，不足以有效地承载和支撑手机电视类型业务的运营。因此在LTE(Long Term Evolution，无线接入网长期演进标准)中，3GPP明确提出增强对下行高速多媒体广播多播服务业务的支持能力，并确定了对物理层和空中接口的设计要求。
在R9中，LTE网络则引入了E-MBMS(Evolved MBMS,演进型MBMS)。E-MBMS提出了SFN(Single Frequency Network，单频点网络)的概念，即采用统一频率在所有小区同时发送数据，但是要保证小区间的同步。这种方式可以极大的提高小区整体信噪比分布，频谱效率也会相应的大幅提高。并基于IP(Internet Protocol)多播协议实现业务的广播和多播。
在R13中，引入SC-PTM(Single Cell Point To Multiploint，单小区点到多点传输)。SC-PTM基于MBMS网络架构，MCE(Multi-cell/multicast Coordination Entity，多小区多播协调实体)决定采用SC-PTM传输方式还是MBSFN(Multimedia Broadcast multicast service Single Frequency Network，单频网多播/广播)传输方式。
在上述通信系统中，UE可采用组播方式接收业务。但是，由于UE的可移动性，会造成其接收业务的通信方式发生改变，例如：从支持多播业 务的小区移动到不支持多播业务的小区，或者，从不支持多播业务的小区移动到支持多播业务的小区；又或者，在同一小区中，UE从无法接受到多播信号的位置移动到可以接收多播信号的位置，或者，UE从可以接受到多播信号的位置移动到无法接收多播信号的位置，都可能会导致通信方式的改变。因此，需进行通信方式的切换。
发明内容
本发明提供一种通信方式切换方法、设备及装置。
本发明提供以下技术方案：
一种通信方式切换方法，应用于网络设备，其特征在于，所述方法包括：发送用户设备在第一通信方式下的分组数据聚合协议PDCP数据发送状态至目标小区的网络设备；其中，该目标小区的网络设备根据该PDCP数据发送状态采用第二通信方式给用户设备下发业务。
一种通信方式切换方法，应用于用户设备，其包括：上报第一通信方式下的PDCP数据接收状态；接收切换后的网络设备采用第二通信方式下发的业务。
一种通信方式切换装置，应用于网络设备，其包括：转发模块，用于发送用户设备在第一通信方式下的PDCP数据发送状态至另一网络设备；其中，该另一网络设备根据该DCP数据发送状态，采用第二通信方式给该用户设备发送业务。
一种通信方式切换装置，应用于用户设备，其包括：上报模块，用于上报在第一通信方式下的PDCP数据接收状态至通信方式该切换后的网络设备；业务接收模块，用于接收切换后的网络设备通过第二通信方式下发的业务。
一种网络设备，其包括：处理器、存储器以及网络接口；所述处理器调用所述存储器中的程序，执行本申请任意一项应用于网络设备的通信方式切换方法，并将执行结果通过所述网络接口发送出去。
一种用户设备，其包括：处理器、存储器以及网络接口；所述处理器调用所述存储器中的程序，执行本申请任意一项应用于用户设备的通信方式切换方法，并将执行结果通过所述网络接口发送出去。
一种芯片，其包括：处理器，用于从存储器中调用并运行计算机程序，安装有所述芯片的设备执行执行本申请任意一项通信方式切换方法。
一种计算机可读存储介质，其中，所述计算机可读存储介质上存储有用于上行传输方法的程序，所述用于上行传输方法的程序被处理器执行时实现本申请任意一项通信方式切换方法。
一种计算机程序产品，其中，所述计算机程序产品存储于非瞬时性计算机可读存储介质，所述计算机程序被执行时实现本申请任意一项通信方式切换方法。
本申请的有益效果在于：将用户设备在第一通信方式下的PDCP数据发送状态给通信方式切换后的网络设备，由此可以保证在通信方式切换的过程中保持PDCP序列号的连续性，从而实现在PCDP层进行通信方式切换，由此可无损切换。
附图说明
图1A为本申请实施方式应用的系统架构图。
图1B为本申请实施方式应用的另一系统架构图。
图2为本申请实施方式一提供的一种通信方式切换方法的流程图。
图3为本申请实施方式二提供的一种通信方式切换方法交互图。
图4为本申请实施方式三提供的一种通信方式切换方法交互图。
图5为本申请实施方式四提供的一种应用于网络设备的通信方式切换装置的模块图。
图6为本申请实施方式五提供的一种应用于用户设备的通信方式切换装置的模块图。
图7本申请实施方式六提供的一种通信方式切换设备的结构示意图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施方式，对本申请进行进一步详细说明。应当理解，此处所描述的实施方式仅用以解释本申请，并不用于限定本申请。但是，本申请可以以多种不同的形式来实现，并不限于本文所描述的实施方式。相反地，提供这些实施方式的目的是使对本实用新型的公开内容的理解更加透彻全面。基于本申请中的具体实施方式，本领域技术人员在没有做出创造性劳动前提下获得的所有其他具体实施方式，都属于本申请的保护范围。
下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。
另外，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应理解，在本申请具体实施方式中，“与A相应的B”表示B与A相关联，根据A可以确定B。但还应理解，根据A确定B并不意味着仅仅根据A确定B，还可以根据A和/或其它信息确定B。
请参看图1A以及图1B，其示出了本申请实施方式应用的无线通信系统100。如图1A所示，该无线通信系统100包括：网络设备110，以及位于该网络设备110覆盖范围内的至少一个用户设备120。该网络设备110发送触发信令给该用户设备120，触发该用户设备120上报PDCP状态。如图1B所示，该无线通信系统100包括：网络设备110A及110B，以及在网络设备110A及110B所覆盖范围内移动的至少一个用户设备120。该网络设备110A发送触发信令给该用户设备120，触发该用户设备120上报PDCP状态给该网络设备110B。
可选地，该无线通信系统100可以包括多个网络设备，并且每个网络设备的覆盖范围内可以包括其它用户设备，本申请实施方式对此不做限定。可选的，该网络设备110、110A、110B可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域内的用户设备(例如UE)进行通信。可选 地，该网络设备100可以是GSM系统或CDMA系统中的基站(Base Transceiver Station，BTS)，也可以是WCDMA系统中的基站(NodeB，NB)，还可以是LTE系统中的演进型基站(Evolutional Node B，eNB或eNodeB)，或者是云无线接入网络(Cloud Radio Access Network，CRAN)中的无线控制器，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备、5G网络中的网络侧设备或者未来演进的公共陆地移动网络(Public Land Mobile Network，PLMN)中的网络设备等。
本申请实施例可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、新无线(New Radio，NR)系统、NR系统的演进系统、免授权频谱上的LTE(LTE-based access to unlicensed spectrum，LTE-U)系统、免授权频谱上的NR(NR-based access to unlicensed spectrum，NR-U)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、无线局域网(Wireless Local Area Networks，WLAN)、无线保真(Wireless Fidelity，WiFi)、下一代通信系统或其他通信系统等。
该用户设备120可以是移动的或固定的。可选地，该用户设备120可以指接入终端、用户设备(User Equipment，UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户设备、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、5G网络中的用户设备或者未来演进的PLMN中的用户设备等。
可选地，本申请实施例中的通信系统可以应用于载波聚合(Carrier Aggregation，CA)场景，也可以应用于双连接(Dual Connectivity，DC)场景，还可以应用于独立(Standalone，SA)布网场景。
在本申请中，网络设备以第一通信方式向用户设备发送业务；当出现需切换通信方式的情形时，则触发通信方式切换机制，切换为第二通信方式向用户发送业务。
触发通信方式切换的情形包括但不限于以下情形之一：
UE处于可支持MBMS业务的小区，并在该小区内以多播方式接收业务，若UE检测到MBSFN信号较弱，则需将接收业务的通信方式从多播切换为单播；或者，
UE处于可支持MBMS业务的小区，但由于MBSFN信号较弱，采用单播方式接收业务，若UE检测到MBSFN信号增强，可将接收业务的通信方式从单播切换为多播；或者，
UE从可支持MBMS业务的小区移动到另一不支持MBMS业务的小区，需将接收业务的通信方式从多播切换为单播；或者，
UE从不支持MBMS业务的小区移动到支持MBMS业务的小区，可将接收业务的通信方式由单播切换为多播。
本申请将通过以下具体实施方式详细阐述本申请是如何实现通信方式的切换。
请参看图2，为本申请实施方式一提供的一种通信方式切换方法。该方法包括：
S210，网络设备发送用户设备在第一通信方式下的PDCP(Packet Data Convergence Protocol分组数据聚合协议)数据发送状态，和/或，该用户设备发送在第一通信方式下的PDCP数据接收状态；
S220，根据该数据发送状态和/或该数据接收状态，采用第二通信方式给该用户设备发送业务；该步骤由接收该数据发送状态和/或该数据接收状态的网络设备执行，具体的，当用户终端在两个小区之间移动时，是由目标小区的网络设备执行，当用户终端在一个小区内动时，是由该小区的网络设备执行。
在通信方式切换的过程中，网络设备发送PDCP数据发送状态和/或用户设备发送PDCP数据接收状态给通信方式切换后的网络设备，由此可以保证PDCP序列号的连续，在PDCP层实现无损切换。
其中，当用户设备是用一个小区移动到另一个小区，则所述通信方式切换后的网络设备为目标小区的网络设备；当用户在一个小区中实现通信方式切换时，则所述通信方式切换后的网络设备认为本小区的网络设备。本申请以下实施方式中均如此，将不再重复赘述。
可选的，在本申请的实施方式中，该第一通信方式、第二通信方式均可以是为单播或多播方式中的一种。具体的，如：第一通信方式为多播，第二通信方式为单播；或者，第一通信方式为单播，第二通行方式为多播；或者，当用户设备从一个小区移动到另一个小区时，第一通信方式和第二通信方式均为单播或均为多播。
在现有的通信系统中，通过应用层服务器或核心网网元实现单播多播切换，由于是在高层实现切换，故而难以实现无损切换，同时由于切换的过程中涉及的网元多，故而切换时延较大。在本申请的实施方式一中，将用户设备在第一通信方式下的PDCP数据发送状态或PDCP数据接收状态发送给网络设备，即，通过PCDP层进行通信方式切换，可实现无损切换。同时，由于在PDCP层进行切换，一般是由接入层网元实现的，而在接入层网元进行单播多播切换，可以减少该切换过程所涉及的网元，故而可以降低切换时延。
请参看图3，为申请实施方式二提供的一种通信方式切换方法。
本实施方式二为上述实施方式一应用于用户设备跨小区间移动的情形。即，该用户设备从该源小区移动到该目标小区。其中，该源小区的网络设备采用第一通信模式发送业务至该用户设备，该目标小区的网络设备采用第二通信模式发送业务至该用户设备。其中，通信方式切换前的网络设备即为该源小区的网络设备，切换后的网络设备即为该目标小区的网络设备。
该方法包括：
S310，该源小区的网络设备发送该用户设备在第一通信方式下的PDCP数据发送状态至该目标小区的网络设备；
S340，该目标小区的网络设备采用第二通信方式给该用户设备发送业务。可选的，该目标小区的网络设备根据该PDCP数据发送状态，采用第二通信方式给该用户设备发送业务。
可选的，PDCP数据发送状态包含以下至少一项：
1)该源小区的网络设备已经发送给用户设备的最后一个数据关联的PDCP SN；
2)该源小区的网络设备已经发送给用户设备的最后一个数据关联的用于加密/完保的输入量(或输入量中除了PDCP SN的部分)；
3)该目标小区的网络设备要发送给该用户设备的第一个数据关联的PDCP SN；
4)该目标小区的网络设备要发送给该用户设备的第一个数据关联的用于加密/完保的输入量；
5)该目标小区的网络设备要发送给该用户设备的第一个数据关联的输入量中除了PDCP SN的部分。
可选的，PDCP数据发送状态，还可以包含以下至少一项：
1)该源小区的网络设备已经发送，但没有收到该用户设备确认的数据关联的PDCP SN(PDCP序列号)；
2)该源小区的网络设备已经发送，但没有收到该用户设备确认的数据关联的用于加密/完保的输入量；
3)该源小区的网络设备已经发送，但没有收到该用户设备确认的数据关联的输入量中除了PDCP SN的部分。
可选的，该用户设备也可以上报其PCDP状态至该目标小区的网络设备。则在S340之前，该方法还可包括：
S320，触发该用户设备上报PDCP状态；其中，S320与S310之间顺序不限，S320可在S310之前，亦可在S310之后，亦或与S310同时；
S330，该用户设备发送PDCP数据接收状态至该目标小区的网络设备。
则S340具体包括：
该目标小区的网络设备根据该PDCP数据发送状态和/或该PDCP数据接收状态，采用第二通信方式给该用户设备发送业务。
可选的，S320触发该用户设备上报PDCP状态，具体包括：
根据该用户设备在该源小区的网络设备和/或该目标小区的网络设备下的RLC模式，触发该用户设备上报PDCP状态；可选的，若其为AM模式，则触发该用户设备上报PDCP状态；或者，
该源小区的网络设备和/或该目标小区的网络设备下发的配置信息，触发该用户设备上报PDCP状态。
可选的，所述PDCP数据接收状态包括以下至少之一：
1)该用户设备在该源小区的网络设备下(即，在第一通信方式下)已经正确接收的至少一个数据关联的PDCP SN；
2)该用户设备在该源小区的网络设备下(即，在第一通信方式下)已经正确接收的至少一个数据关联的用于加密/完保的输入量，或输入量中除了PDCP SN的部分；即，
3)该用户设备在该源小区的网络设备下(即，在第一通信方式下)没有正确接收的至少一个数据关联的PDCP SN；
4)该用户设备在该源小区的网络设备下(即，在第一通信方式下)没有正确接收的至少一个数据关联的用于加密/完保的输入量，或输入量中除了PDCP SN的部分。
在本申请的实施方式二中，源小区的网络设备将用户设备在第一通信方式下的PDCP数据发送状态发送给目标小区的网络设备，由此保证用户设备的PDCP序列号连续，则目标小区的网络设备可根据PDCP数据发送状态无损切换至第二通信状态，并通过第二通信方式给用户设备继续发送业务。同时，由于在PDCP层进行切换，一般是由接入层网元实现的，而在接入层网元进行单播多播切换，可以减少该切换过程所涉及的网元，故而可以降低切换时延。
请参看图4，为申请实施方式三提供的一种通信方式切换方法。
本实施方式三为上述实施方式一应用于用户设备在同一小区中进行通信方式切换的情形。在本实施方式三种，通信方式切换前的网络设备与切换后的网络设备为同一网络设备。
该方法包括：
S420，该用户设备发送在第一通信方式下的PDCP数据接收状态至该网络设备；
S430，网络设备采用第二通信方式给该用户设备发送业务。可选的，网络设备根据该用户设备在第一通信方式下的PDCP数据发送状态和/或该PDCP数据接收状态，采用第二通信方式给该用户设备发送业务。
在通信方式切换的过程中，网络设备根据发送PDCP数据发送状态和/或用户设备发送的PDCP数据接收状态，切换到第二通信方式下发业务，由此可以保证PDCP序列号的连续，在PDCP层实现无损切换。可选的，PDCP数据发送状态包含以下至少一项：
1)该网络设备在第一通信模式下已经发送给该用户设备的最后一个数据关联的PDCP SN；
2)该网络设备在第一通信模式下已经发送给该用户设备的最后一个数据关联的用于加密/完保的输入量，或输入量中除了PDCP SN的部分；
3)该网络设备在第二通信方式下要发送给该用户设备的第一个数据关联的PDCP SN；
4)该网络设备在第二通信方式下要发送给该用户设备的第一个数据关联的用于加密/完保的输入量，或输入量中除了PDCP SN的部分。
可选的，PDCP数据发送状态，还可以包含以下至少一项：
1)该网络设备已经发送，但没有收到该用户设备确认的数据关联的PDCP SN(PDCP序列号)；
2)该网络设备已经发送，但没有收到该用户设备确认的数据关联的用于加密/完保的输入量，或输入量中除了PDCP SN的部分。
可选的，在S420之前，该方法还可包括：
S410，触发该用户设备上报PDCP状态。
可选的，S410触发该用户设备上报PDCP状态，具体包括：
根据该用户设备在该网络设备下的RLC模式，确定触发该用户设备上报PDCP状态；可选的，若其为AM模式，则该用户设备上报PDCP状态；或者，
该网络设备下发的配置信息，触发该用户设备上报PDCP状态。
可选的，所述PDCP数据接收状态包括以下至少之一：
1)该用户设备在该网络设备的第一通信方式下已经正确接收的至少一个数据关联的PDCP SN；
2)该用户设备在该网络设备的第一通信方式下已经正确接收的至少一个数据关联的用于加密/完保的输入量，或输入量中除了PDCP SN的部分；
3)该用户设备在该网络设备的第一通信方式下没有正确接收的至少一个数据关联的PDCP SN；
4)该用户设备在该网络设备的第一通信方式下没有正确接收的至少一个数据关联的用于加密/完保的输入量，或输入量中除了PDCP SN的部分。
在本申请的实施方式三中，网络设备根据用户设备在第一通信方式下的PDCP数据发送状态，则网络设备可根据PDCP数据发送状态，通过第二通信方式给用户设备发送业务。由此，可在PCDP层实现通信方式的无损切换。同时，由于在PDCP层进行切换，一般是由接入层网元实现的，而在接入层网元进行单播多播切换，可以减少该切换过程所涉及的网元，故而可以降低切换时延。
本实施方式三中有不详尽之处，请参见上述实施方式一中相同或相应的部分，在此不做重复赘述。
请参看图5，本申请实施方式四提供的一种通信方式切换装置500的模块图。该通信方式切换装置应用于网络设备，尤其是接入层的网络设备。
该通信方式切换装置包括：
转发模块510，用于发送该用户设备在第一通信方式下的PDCP数据发送状态至另一网络设备。
其中，当用户设备在跨小区实现通信方式切换时，则作为源小区的网络设备需向目标小区的网络设备(即上述另一网络设备)发送该PDCP数据发送状态，使得目标小区的网络设备可根据该PDCP数据发送状态实现通信方式的切换。
可选的，该通信方式切换装置还包括：
触发模块520，用于触发该用户设备进行PDCP状态上报。
具体的，该触发模块520，具体用于向该用户设备下发配置信息，触发该用户设备上报PDCP状态。
可选的，该通信方式切换装置还包括：
接收模块530，用于接收另一网络设备发送的该用户设备在第一通信方式下的PDCP数据发送状态，和/或,该用户设备上报的PDCP数据接收状态；
发送模块540，用于根据该PDCP数据发送状态和/或该PDCP数据接收状态，采用第二通信方式给所述用户设备下发业务。其中，当该接收模块530仅接收到该另一网络设备发送的PDCP数据发送状态时，则发送模块540根据该PDCP数据发送状态采用第二通信方式给所述用户设备下发业务；当该接收模块530接收到该PDCP数据发送状态和该PDCP数据接收状态时，则发送模块540根据该PDCP数据发送状态和/或该PDCP数据接收状态，采用第二通信方式给所述用户设备下发业务。
在本申请的实施方式四中，该通信方式切换装置将用户设备在第一通信方式下的PDCP数据发送状态发送给另一小区的网络设备，使得另一小区的网络设备可根据PDCP数据发送状态以及用户设备的序列号，通过第二通信方式给用户设备发送业务。由此，通过PCDP层进行通信方式切换，可实现无损切换。同时，由于在PDCP层进行切换，一般该通信方式切换装置是应用于接入层网元中，而在接入层网元进行单播多播切换，可以减少该切换过程所涉及的网元，故而可以降低切换时延。
本实施方式四中有不详尽之处，请参见上述实施方式一至三中相同或相应的部分，在此不做重复赘述。
请参看图6，本申请实施方式五提供的一种通信方式切换装置600的模块图。该通信方式切换装置应用于用户设备。
该通信方式切换装置包括：
上报模块620，用于上报在第一通信方式下的PDCP数据接收状态至通信方式切换后的网络设备；
业务接收模块630，用于接收网络设备通过第二通信方式下发的业务。可选的，该业务接收模块630，具体用于接收网络设备根据该通信方式切换装置在第一通信方式下的PDCP数据发送状态和/或该PDCP数据接收状态，通过第二通信方式下发的业务。
可选的，该通信方式切换装置还包括：启动模块610，用于触发该用户设备上报PDCP状态。
可选的，该启动模块610，具体用于根据该用户设备在该网络设备下的RLC模式，确定触发该用户设备上报PDCP状态；或者，该网络设备下发的配置信息，触发该用户设备上报PDCP状态。
可选的，该启动模块610，具体用于若该用户设备在该网络设备下的RLC模式为AM模式，则该用户设备上报PDCP状态。可选的，该上报模块620，具体用于根据以下条件之一，上报在第一通信方式下的PDCP数据接收状态至通信方式切换后的网络设备：
根据该用户设备在该网络设备下的RLC模式；可选的，该用户设备在该网络设备下的RLC模式为AM模式，则该用户设备上报PDCP状态；或者，
该网络设备下发的配置信息。
其中，在用户设备跨小区移动并切换通信方式时，该触发上报模块620是接收用源小区的网络设备接收触发信令，并向目标小区的网络设备上报该第一通信方式下的PDCP数据接收状态，并有目标小区的网络设备通过第二通信方式下发业务。在用户设备在同一小区内进行通信方式切换时，该该触发上报模块620是接收本小区的网络设备的触发信令，并向本小区的网络设备上报该第一通信方式下的PDCP数据接收状态，并有本小区的网络设备通过第二通信方式下发业务。
在本申请的实施方式五中，该通信方式切换装置在切换过程中保持PDCP序列号不变，而网络设备则是根据第一通信状态下的PDCP数据发送状态以及该用户设备的序列号，将下发业务的通信方式切换为第二通信方式。即，本申请的实施方式五是通过PCDP层进行通信方式切换，由此可实现无损切换。同时，由于在PDCP层进行切换，一般是由接入层网元实 现的，而在接入层网元进行单播多播切换，可以减少该切换过程所涉及的网元，故而可以降低切换时延。
本实施方式五中有不详尽之处，请参见上述实施方式一至三中相同或相应的部分，在此不做重复赘述。
请参看图7，本申请实施方式六提供的一种通信方式切换设备的结构示意图。
该通信方式切换设备700包括：处理器710、存储器720以及网络接口730。处理器710调用存储器720中的程序，执行上述实施方式一至三中提供的任意一种通信方式切换方法中由网络设备实现的相应流程，或者，执行上述实施方式一至三中提供的任意一种通信方式切换方法中由用户设备实现的相应流程，并将执行结果通过网络接口730发送出去。
该处理器710可以是一个独立的元器件，也可以是多个处理元件的统称。例如，可以是CPU，也可以是ASIC，或者被配置成实施以上方法的一个或多个集成电路，如至少一个微处理器DSP，或至少一个可编程门这列FPGA等。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机、芯片或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。该程序可以存储于一计算机可读存储介质中，存储介质可以包括：只读存储器(ROM，Read Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁盘或光盘等。
上述实施方式说明但并不限制本发明，本领域的技术人员能在权利要求的范围内设计出多个可代替实例。所属领域的技术人员应该意识到，对在没有违反如所附权利要求书所定义的本发明的范围之内，可对具体实现方案做出适当的调整、修改等。因此，凡依据本发明的精神和原则，所做的任意修改和变化，均在所附权利要求书所定义的本发明的范围之内。

Claims (25)

  1. 一种通信方式切换方法，应用于网络设备，其特征在于，所述方法包括：
    发送用户设备在第一通信方式下的分组数据聚合协议PDCP数据发送状态至目标小区的网络设备；其中，所述目标小区的网络设备根据所述PDCP数据发送状态采用第二通信方式给所述用户设备下发业务。
  2. 如权利要求1所述的方法，其特征在于，所述PDCP数据发送状态包含以下至少一项：
    源小区的网络设备已经发送给所述用户设备的最后一个数据关联的PDCP序列号；
    所述源小区的网络设备已经发送给所述用户设备的最后一个数据关联的用于加密/完保的输入量；
    所述源小区的网络设备已经发送给所述用户设备的最后一个数据关联的输入量中除了PDCP序列号的部分；
    所述目标小区的网络设备要发送给所述用户设备的第一个数据关联的PDCP序列号；
    所述目标小区的网络设备要发送给所述用户设备的第一个数据关联的用于加密/完保的输入量；
    所述目标小区的网络设备要发送给所述用户设备的第一个数据关联的输入量中除了PDCP序列号的部分；
    所述源小区的网络设备已经发送，但没有收到所述用户设备确认的数据关联的PDCP序列号；或者，
    所述源小区的网络设备已经发送，但没有收到所述用户设备确认的数据关联的用于加密/完保的输入量，或输入量中除了PDCP序列号的部分。
  3. 如权利要求1所述的方法，其特征在于，所述方法还包括：
    触发所述用户设备向通信方式切换后的网络设备进行PDCP状态上报。
  4. 如权利要求3所述的方法，其特征在于，所述触发所述用户设备向通信方式切换后的网络设备进行PDCP状态上报，具体包括：
    发送配置信息触发所述用户设备向所述通信方式切换后的网络设备上报PDCP状态。
  5. 如权利要求4所述的方法，其特征在于，所述发送配置信息触发所述用户设备向所述通信方式切换后的网络设备上报PDCP状态，具体包括：
    发送配置信息触发所述用户设备向所述通信方式切换后的网络设备上报PDCP数据发送接收状态；其中，所述目标小区的网络设备根据所述PDCP数据发送状态和/或所述PDCP数据发送接收状态，采用所述第二通信方式给用户设备下发所述业务。
  6. 如权利要求1至5中任意一项所述的方法，其特征在于，所述网络设备为接入层网络设备。
  7. 一种通信方式切换方法，应用于用户设备，其特征在于，所述方法包括：
    上报第一通信方式下的PDCP数据接收状态至通信方式切换后的网络设备；
    接收所述通信方式切换后的网络设备采用第二通信方式下发的业务。
  8. 如权利要求7所述的方法，其特征在于，所述PDCP数据接收状态包括以下至少之一：
    所述用户设备在所述第一通信方式下已经正确接收的至少一个数据关联的PDCP序列号；
    所述用户设备在所述第一通信方式下已经正确接收的至少一个数据关联的用于加密/完保的输入量；
    所述用户设备在所述第一通信方式下已经正确接收的至少一个数据关联的输入量中除了PDCP序列号的部分；
    所述用户设备在所述第一通信方式下没有正确接收的至少一个数据关联的PDCP序列号；
    所述用户设备在所述第一通信方式下没有正确接收的至少一个数据关联的用于加密/完保的输入量；所述用户设备在所述第一通信方式下没有正确接收的至少一个数据关联的输入量中除了PDCP序列号的部分。
  9. 如权利要求7或8所述的方法，其特征在于，所述方法还包括：
    触发所述用户设备向所述通信方式切换后的网络设备上报PDCP状态。
  10. 如权利要求9所述的方法，其特征在于，所述触发所述用户设备上报PDCP状态至所述通信方式切换后的网络设备，包括：
    根据所述用户设备的RLC模式，触发所述用户设备上报PDCP状态所述至所述通信方式切换后的网络设备；或者，
    根据所述切换前的网络设备下发的配置信息，触发所述用户设备上报PDCP状态至所述通信方式切换后的网络设备。
  11. 如权利要求10所述的方法，其特征在于，所述根据所述用户设备的RLC模式，触发所述用户设备上报PDCP状态至所述通信方式切换后的网络设备，包括：
    所述RLC模为AM模式，则触发所述用户设备上报PDCP状态至所述通信方式切换后的网络设备。
  12. 如权利要求7至11中任意一项所述的方法，其特征在于，所述接收切换后的网络设备采用所述第二通信方式下发的所述业务，包括：
    接收切换后的网络设备根据所述用户设备在所述第一通信方式下的PDCP数据发送状态和/或所述PDCP数据接收状态，采用所述第二通信方式下发的所述业务。
  13. 一种通信方式切换装置，应用于网络设备，其特征在于，所述装置包括：
    转发模块，用于发送用户设备在第一通信方式下的PDCP数据发送状态至另一网络设备；其中，所述另一网络设备根据所述DCP数据发送状态，采用第二通信方式给所述用户设备发送业务。
  14. 如权利要求13所述的装置，其特征在于，所述通信方式切换装置还包括：
    触发模块，用于触发所述用户设备进行PDCP状态上报。
  15. 如权利要求14所述的装置，其特征在于：
    所述触发模块，具体用于向所述用户设备下发配置信息，触发所述用户设备上报PDCP状态。
  16. 如权利要求13至15中任意一项所述的装置，其特征在于，所述网络设备为接入层网络设备。
  17. 一种通信方式切换装置，应用于用户设备，其特征在于，所述装置法包括：
    上报模块，用于上报在第一通信方式下的PDCP数据接收状态至通信方式切换后的网络设备；
    业务接收模块，用于接收所述通信方式切换后的网络设备通过第二通信方式下发的业务。
  18. 如权利要求17所述的装置，其特征在于，所述上报模块，具体用于根据以下条件之一，上报在第一通信方式下的PDCP数据接收状态至通信方式所述切换后的网络设备：
    根据所述用户设备的RLC模式，确定上报所述PDCP数据接收状态；或者，
    根据所述切换前的网络设备下发的配置信息，确定上报所述PDCP数据接收状态。
  19. 如权利要求18所述的装置，其特征在于，所述上报模块，具体用于当所述用户设备的RLC模式为AM模式时，触发所述用户设备向所述通信方式切换后的网络设备上报PDCP状态。
  20. 如权利要求17至19中任意一项所述的装置，其特征在于，所述业务接收模块，用于接收切换后的网络设备通过所述第二通信方式下发的所述业务；其中，所述切换后的网络设备根据所述通信方式切换装置在所述第一通信方式下的所述PDCP数据发送状态和/或所述PDCP数据接收状态下发所述业务。
  21. 一种网络设备，其特征在于，所述设备包括：处理器、存储器以及网络接口；所述处理器调用所述存储器中的程序，执行上述权利要求1至6中任意一项所述的通信方式切换方法，并将执行结果通过所述网络接口发送出去。
  22. 一种用户设备，其特征在于，所述设备包括：处理器、存储器以及网络接口；所述处理器调用所述存储器中的程序，执行上述权利要求7至12中任意一项所述的通信方式切换方法，并将执行结果通过所述网络接口发送出去。
  23. 一种芯片，其特征在于，包括：处理器，用于从存储器中调用并运行计算机程序，安装有所述芯片的设备执行如权利要求1至12中任意一项所述的通信方式切换方法。
  24. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质上存储有用于上行传输方法的程序，所述用于上行传输方法的程序被处理器执行时实现上述权利要求1至12中任意一项所述的通信方式切换方法。
  25. 一种计算机程序产品，其特征在于，所述计算机程序产品存储于非瞬时性计算机可读存储介质，所述计算机程序被执行时实现如权利要求1至12中任意一项所述的通信方式切换方法。
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