WO2017143491A1 - 一种数据包的传输方法、网络侧设备以及用户设备 - Google Patents

一种数据包的传输方法、网络侧设备以及用户设备 Download PDF

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Publication number
WO2017143491A1
WO2017143491A1 PCT/CN2016/074258 CN2016074258W WO2017143491A1 WO 2017143491 A1 WO2017143491 A1 WO 2017143491A1 CN 2016074258 W CN2016074258 W CN 2016074258W WO 2017143491 A1 WO2017143491 A1 WO 2017143491A1
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WO
WIPO (PCT)
Prior art keywords
user equipment
data packet
network side
request message
side device
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PCT/CN2016/074258
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English (en)
French (fr)
Inventor
庞伶俐
郑潇潇
黄敏
Original Assignee
华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to BR112018017025-9A priority Critical patent/BR112018017025A2/zh
Priority to PCT/CN2016/074258 priority patent/WO2017143491A1/zh
Priority to CN201680069572.2A priority patent/CN108370372B/zh
Priority to EP16890945.5A priority patent/EP3407558B1/en
Publication of WO2017143491A1 publication Critical patent/WO2017143491A1/zh
Priority to US16/106,325 priority patent/US10645003B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00Routing or path finding of packets in data switching networks
    • H04L45/74Address processing for routing
    • H04L45/742Route cache; Operation thereof
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00Traffic control in data switching networks
    • H04L47/10Flow control; Congestion control
    • H04L47/36Flow control; Congestion control by determining packet size, e.g. maximum transfer unit [MTU]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/02Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/56Provisioning of proxy services
    • H04L67/568Storing data temporarily at an intermediate stage, e.g. caching
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/56Provisioning of proxy services
    • H04L67/568Storing data temporarily at an intermediate stage, e.g. caching
    • H04L67/5681Pre-fetching or pre-delivering data based on network characteristics
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40Network security protocols

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a data packet transmission method, a network side device, and a user equipment.
  • the player of the terminal has a buffer space for storing data to be played.
  • the terminal requests new data from the server and continues to put it into the cache space to wait for playback.
  • the continuity of video playback can be guaranteed, and playback interruption due to poor network quality and the like can be avoided to some extent.
  • the embodiment of the invention provides a data packet transmission method, a network side device and a user equipment, which can cache data packets on the network side, thereby solving the problem that the data packet transmission in the data transmission process is not timely.
  • a first aspect of the embodiments of the present invention provides a data packet transmission method, including: a network side device receiving a first request message sent by a user equipment, where the first request message is used to request a network side device to allocate a data cache space, and the network side At least a part of the data packet sent by the device to the user equipment is cached in the data cache space, and then the network side device receives the second request message sent by the user equipment, where the second request message is used to request the network side device to send the cached data.
  • the packet, the network side device sends some or all of the cached data packets to the user equipment.
  • the first request message sent by the user equipment includes a capacity of a data cache space requested by the user equipment, and correspondingly, after receiving, by the network side device, the first request message sent by the user equipment, And determining, according to the capacity of the data cache space requested by the first request message, the data buffer space of the corresponding capacity is allocated to the user equipment.
  • the first request message sent by the user equipment further includes identifier information of the data packet, and is used to identify the cache that is requested by the user equipment.
  • the data packet correspondingly, the network side device sends at least a part of the data packet sent by the server device to the user equipment in the data cache space, and the specific operation is: receiving the data packet sent by the server device to the user equipment, if the received data packet is in the data packet.
  • the included identification information is the same as the identification information of the data packet included in the first request message, and the data packet is cached in the data cache space.
  • the first request message sent by the user equipment includes a service indication, and the indication that the user equipment supports the network side device to buffer the data packet, and correspondingly, the network side device receives the user equipment and sends the After the first request message, the network side device further allocates a data cache space for the user equipment according to the service indication and the indication that the user equipment supports the network side device to buffer the data packet.
  • a fourth possible implementation manner after the network side device supports the network side device to buffer the data packet according to the service indication and the user equipment, after the data cache space is allocated to the user equipment, And performing: sending a first response message to the user equipment, the first response message is used to notify the network device that the data cache space has been allocated.
  • the service indication further includes identifier information of the data packet, and is used to identify the data packet requested by the user equipment, correspondingly, the network
  • the specific operation of the at least one part of the data packet sent by the side device to the user equipment in the data cache space is: receiving the data packet sent by the server device to the user equipment, and if the received data packet includes the identification information and the service indication If the identification information of the data packet contained in it is the same, the data packet is cached.
  • the second request message includes at least one of the following information: data requested by the user equipment The size information of the packet, the identification information of the data packet requested by the user equipment, and the storage location of the data packet requested by the user equipment.
  • the second request message is a radio resource control RRC message, or a hypertext transfer protocol HTTP request.
  • a second aspect of the embodiments of the present invention provides a data packet transmission method, including: a user equipment sends a first request message to a network side device, where the first request message is used to request a data cache space from a network side device, where the user equipment
  • the server device sends a third request message, where the third request message is used to request the server device to send the data packet, where the network side device caches at least a part of the data packet sent by the server device in the data cache space, and then the user equipment sends the data packet to the network side device.
  • a second request message where the second request message is used to request the network side device to send the buffered data packet, and then the user equipment receives some or all of the cached data packets sent by the network side device.
  • the first request message sent by the user equipment further includes identifier information of the data packet, and is used to identify the data packet requested by the user equipment.
  • the first request message sent by the user equipment includes a service indication, and the user equipment is configured to support the network side device to cache the data packet. Instructions.
  • the method further includes: receiving, by the network side device, a first response message, where the first response message is used to notify the network device The data cache space has been allocated.
  • a fourth possible implementation manner after the network side device supports the network side device to buffer the data packet according to the service indication and the user equipment, after the data cache space is allocated to the user equipment, And performing: sending a first response message to the user equipment, the first response message is used to notify the network device that the data cache space has been allocated.
  • the service indication further includes identifier information of the data packet, and is used to identify the data packet requested by the user equipment.
  • the second request message includes at least one of the following information: data requested by the user equipment The size information of the packet, the identification information of the data packet requested by the user equipment, and the storage location of the data packet requested by the user equipment.
  • the second request message is a radio resource control RRC message, or a hypertext transfer protocol HTTP request.
  • a third aspect of the embodiments of the present invention provides a network side device, where the network side device has a behavior function that implements the method provided by the foregoing first aspect, and the function may be implemented by using hardware, or may be implemented by using hardware corresponding software.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a fourth aspect of the embodiments of the present invention provides a user equipment, where the user equipment has a behavior function that implements the method provided by the foregoing second aspect, and the function may be implemented by using hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • a fifth aspect of the embodiments of the present invention provides a network side device, including a wireless interface, a modulator/demodulator, a memory, and a processor, wherein the memory stores a set of programs, and the processor is configured to call a program stored in the memory, Performing the following operations: receiving a first request message sent by the user equipment, where the first request message is used to request the network side device to allocate a data cache space; and at least a part of the data packet sent by the server device to the user equipment is cached in the data cache space; And a second request message sent by the user equipment, where the second request message is used to request the network side device to send the buffered data packet; and send part or all of the cached data packet to the user equipment.
  • a sixth aspect of the embodiments of the present invention provides a user equipment, including a wireless interface, a modulator/demodulator, a memory, and a processor, wherein the memory stores a set of programs, and the processor is configured to invoke a program stored in the memory to execute
  • the following operations are: sending a first request message to the network side device, where the first request message is used to request a data cache space from the network side device; and sending a third request message to the server device, where the third request message is used to request the server device to send data.
  • the network side device caches at least a part of the data packet sent by the server device in the data cache space; and sends a second request message to the network side device, where the second request message is used to request the network side device to send the buffered data packet; and the receiving network Some or all of the cached packets sent by the side device.
  • a seventh aspect of the embodiments of the present invention provides a communication system, where the communication system includes the network side device described in the foregoing third aspect, such as the user equipment and the server device described in the foregoing fourth aspect.
  • the user equipment first requests the data cache space from the network side device by sending the first request message, and then the network side device caches at least a part of the data packet sent by the server device to the user equipment in the data cache space.
  • the user equipment requests the cached data packet from the network side device by sending the second request message, and the network side device sends some or all of the cached data packets to the user equipment, so that the network side device can cache the data packet according to the request of the user equipment.
  • the data packet thereby solving the problem that the data packet transmission during the data transmission process is not timely.
  • FIG. 1 is a schematic diagram of a scenario of a wireless communication system according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a data packet transmission process in the prior art
  • FIG. 3 is a schematic flowchart of a method for transmitting a data packet according to an embodiment of the present invention
  • FIG. 4 is a schematic flowchart of another method for transmitting a data packet according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a network side device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a data cache module according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a user equipment according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another network side device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of another user equipment according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a layer structure of a terminal according to an embodiment of the present invention.
  • 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
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • FIG. 1 is a schematic diagram of a scenario of a wireless communication system according to an embodiment of the present invention, which includes a user equipment (User Equipment, referred to as “UE”) and a network side device (Network, simply referred to as “NW”). And server equipment (Sever, referred to as "SV").
  • the user equipment may communicate with one or more core networks via a Radio Access Network (RAN), for example, the user equipment may be a mobile phone (or “cellular” phone). Or a computer with a mobile terminal, etc., for example, the user device can also be a portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile device.
  • RAN Radio Access Network
  • the user equipment may be a mobile phone (or “cellular” phone).
  • a computer with a mobile terminal, etc. for example, the user device can also be a portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile device.
  • the network side device includes a radio access network device, a core network device, or a combination of the two.
  • the network side device may further include any relay device in the process of transmitting the service data packet, and the network side device may also be An external device of the above various devices (ie, a radio access network device, a core network device, or a combination of the two, or a relay device), and the external device may send the stored data packet to the foregoing various devices.
  • the data cache space may be negotiated by the control plane function entity in the network side device, and the user plane function entity provides the data cache space.
  • the server device responds to the service request and processes it, such as sending a data packet.
  • FIG. 2 is a process of data packet transmission between a UE and an SV in the prior art.
  • the NW is responsible for scheduling data packets, that is, responsible for transmitting a data packet request message sent by the UE to the SV, or by using the SV.
  • the delivered packet is delivered to the UE.
  • the NW cache data packet is mainly used to ensure the service continuity of the UE, and the UE is mainly used to request the cached data packet. It should be noted that, as an optional implementation manner, some functions of the UE and the NW are interchangeable, that is, the UE is mainly used for buffering data packets, and the NW is mainly used for requesting.
  • the cached data packets are not separately described below for this embodiment.
  • FIG. 3 is a schematic flowchart of a method for transmitting a data packet according to an embodiment of the present invention.
  • the flow of the data packet transmission method in this embodiment as shown in the figure can be as follows.
  • the UE sends a first request message to the NW.
  • the UE sends a first request message to the NW, where the NW receives the first request message, where the first request message is used to request the NW to allocate a data cache space.
  • the triggering time for the UE to send the first request message to the NW may be determined according to factors such as the service type of the UE, the network load, the channel quality, the current data processing rate, the total data to be processed, and the size of the local cache space. For example, if the UE is playing a video and the network load is greater than the preset threshold and the channel quality is lower than the preset indicator, the UE may predict that the play video will be stuck, and then send the first request message to the NW. .
  • the first request message may include a capacity of a data cache space that the UE requests to allocate.
  • the capacity of the data buffer space requested by the UE may also be comprehensively estimated according to factors such as network load, channel quality, current data processing rate, total data to be processed, and size of the local remaining buffer space. For example, if the UE is playing high-definition video, the data processed per unit time is large (that is, the data processing rate is large) and the total amount of data to be processed is also large, the UE can request to allocate a larger data buffer space.
  • the first request message may include identifier information of the data packet, and is used to identify the data packet that the UE requests to cache. The reason is that the UE may not need to cache all the data packets to be received in the data cache space, and only need to cache some data packets to be received in the data cache space.
  • the identification information of the data packet may be a service bearer identifier of the data packet, or may be a service address information of the data packet, such as an IP (Internet Protocol) address, and of course, other identifiers that can identify the data packet. Information, not exhaustive here.
  • the NW allocates a data cache space to the UE according to the first request message.
  • the NW allocates a data cache space for the UE.
  • the NW determines, according to the capacity of the data cache space requested by the first request message, to allocate a data cache space of the corresponding capacity to the UE. For example: suppose the capacity of the data cache space in the first request message is 2G. Then NW allocates 2G data buffer space to the UE as much as possible.
  • the NW may determine the data buffer space allocated for the UE according to the preset capacity or the service type of the UE, where the service type of the UE includes the video service. , data services and voice services.
  • the first response message is sent to the UE, where the first response message is used to notify the UE that the data cache space has been allocated.
  • the first response message includes a capacity of the data cache space allocated by the NW to the UE.
  • the UE sends a third request message to the SV.
  • the UE sends a third request message to the SV, and the SV receives the third request message, where the third request message is used to request the SV to send the data packet.
  • the third request message is a packet control message of the type of HTTP (Transmission Control Protocol) or HTTPS (HTTP over Secure socket layer).
  • the SV sends a data packet to the UE by using the NW according to the third request message.
  • the SV after receiving the third request message, the SV sends a data packet to the UE.
  • the SV first sends the data packet to the NW, so that the NW forwards the data packet to the UE.
  • the NW caches at least a part of the data packet sent by the SV to the UE in the data cache space.
  • the NW receives the data packet sent by the SV to the UE, and caches at least a part of the data in the data cache space.
  • the NW may determine the buffered data packet according to the capacity of the data cache space allocated for the UE, and then cache the determined data packet in the data cache space.
  • the NW caches all the data packets, and waits for the UE's request to send the buffered data packet to the UE; or the NW selectively caches part of the data packet to avoid the delay of the data packet delivery and affect the service experience of the UE. . For example, suppose the capacity of the data cache space allocated by the NW to the UE is 500M.
  • the NW receives multiple data packets with a total size of 300M, all the data packets are buffered in the data cache space; if the total size received by the NW is For multiple data packets of 800M, a part of the data packets of 500M (or close to 500M) are buffered in the data buffer space, and another redundant data packet is directly sent to the UE.
  • the NW can also determine the cached data packet according to the type of the data packet, and then cache the determined data packet in the data cache space. For example, if the NW receives two types of data packets, one is video data and the other is instant message data, the NW can cache the video data in the data buffer space and send the instant message data directly to the UE.
  • the first request message includes the identifier information of the data packet
  • the identifier information included in the data packet received by the NW is the same as the identifier information of the data packet included in the first request message
  • the received information is received.
  • the packet is cached in the data cache space.
  • the identifier information included in the data packet received by the NW is different from the identifier information of the data packet included in the first request message, the data packet is directly sent to the UE.
  • the embodiment of the present invention further includes: the NW notifying the SV of the TCP layer to buffer the service data packet sent by the SV to the UE; Or, after the NW caches the received data packet, the NW sends a notification message to the TCP layer of the SV, where the notification message is used to let the TCP layer of the SV know that the NW caches the data packet.
  • the NW sends a notification message to the TCP layer of the SV, where the notification message is used to let the TCP layer of the SV know that the NW caches the data packet.
  • the UE needs to send a feedback message to the TCP layer of the SV, so that the TCP layer knows that the data packet is successfully sent, otherwise the TCP layer reduces the size of the sending window.
  • the embodiment of the present invention can prevent the problem that the TCP layer affects the throughput of the TCP layer and/or repeatedly transmits the data packet after the TCP layer does not receive the feedback message sent by the UE after the NW buffers the received data packet.
  • the UE sends a second request message to the NW.
  • the UE sends a second request message to the NW, where the NW receives the second request message, where the second request message is used to request the NW to send the data packet in the data buffer space.
  • the second request message may be an RRC (Radio Resource Control) message, a layer 2 control cell, or an HTTP request.
  • the second request message includes at least one of the following information: 1 size information of the data packet requested by the UE. 2 Identification information of the data packet requested by the UE. 3 The storage location of the data packet requested by the UE. For the case of 2, the identifier of the data packet may be the serial number of the data packet, and the UE and the NW uniquely identify the data packet in the first cache space.
  • the second request message sent by the UE to the NW may be placed in a message with the third request message sent to the SV again, and the third request message sent to the SV is used for the request again.
  • the SV sends a new packet.
  • the second request message is carried in a transport layer of the third request message or a protocol layer header of the IP layer or the access layer.
  • the UE sends a third request message to the SV to request the SV to send the Nth data packet
  • the UE carries a second request message requesting the N-1th data packet buffered in the data cache space to the NW in the third request message.
  • N is greater than 1 A positive integer.
  • the second request message sent by the UE to the NW may be triggered after the application layer or the operating system of the UE sends the indication message to the bottom layer, or may be the UE.
  • the header of the data packet includes indication information indicating that the second request message is triggered by the bottom layer, for example, the indication information is included in the TCP or IP header of the data packet, and the specific The indication information may also be NW identification information, for example, an NW IP address or the like.
  • the NW sends some or all of the buffered data packets to the UE according to the second request message.
  • the NW after receiving the second request message, the NW sends some or all of the data packets buffered in the data cache space to the UE.
  • the NW sends the data packet corresponding to the size information to the UE according to the first-in-first-out basis according to the chronological order of the buffered data packets. For example, if the size information of the data packet included in the second request message is 200M, the NW sends the first data packet with the total size of 200M to the UE, and if the total size of the buffered data packet is less than 200M, The data packet is sent to the UE. 2 If the second request message includes the identifier information of the data packet requested by the UE, the NW sends the data packet corresponding to the identifier information to the UE. If the second request message includes the storage location of the data packet requested by the UE, the NW sends the data packet corresponding to the storage location to the UE.
  • the NW parses the second request message from the message, and According to the second request message, some or all of the data packets are sent to the UE.
  • the UE may not send the second request message to the NW.
  • the NW determines, according to the message, whether to send a partial or All packets. In this embodiment, the NW needs to identify the third request message. Further, the NW may directly send the third request message to the SV without sending the UE.
  • the UE first requests the data buffer space by sending the first request message to the NW, and then the NW sends at least a part of the data packet sent by the SV to the UE in the data buffer space, and the UE sends the second. Requesting a message to request a cached packet from NW, and then NW The UE sends some or all of the buffered data packets, so that the NW can buffer the data packets according to the request of the UE, thereby solving the problem that the data packet transmission in the data transmission process is not timely.
  • FIG. 4 is a schematic flow chart of another method for transmitting a data packet according to an embodiment of the present invention.
  • the flow of the data packet transmission method in this embodiment as shown in the figure can be as follows.
  • the UE sends a service indication to the NW and the UE supports an indication of the data packet in the NW.
  • the service indication is used to indicate to the NW, a service that needs to be transmitted, such as a video data service, a voice data service, or the like.
  • the UE supports the indication of the NW buffered data packet for indicating the capability of the UE to the NW, that is, the UE can support the NW to buffer the data packet.
  • the service indication sent by the UE and the indication of supporting the NW cache data packet may not be sent in the same message.
  • the UE may send an indication for supporting the data packet in the NW when accessing the network, where the UE is Send a service indication when the service starts. It can be seen that step 201 does not limit the order in which the UE sends the above information.
  • the UE reports the service indication for all services transmitted, but not all services are cached in the data cache space, that is, only part of the service needs to be cached in the data cache space, or only part of the service can be cached. Data cache space.
  • the triggering occasion that the UE sends the service indication to the NW and the indication that the UE supports the NW cache data packet may be based on the network load, the channel quality, the current data processing rate, the total data to be processed, and the size of the local remaining buffer space. And other factors to determine. For example, if the UE is playing a video and the network load is large and the channel quality is poor, the UE can predict that the playing video will be stuck, so the service indication is sent to the NW and the UE supports the data packet in the NW. Instructions.
  • the service indication may include identifier information of the data packet, and is used to identify the data packet that the UE requests to cache.
  • the NW allocates a data buffer space to the UE according to the service indication and the indication that the UE supports the NW cache data packet.
  • the NW when the NW receives the service indication, it determines whether the UE supports the indication that the UE supports the data packet in the NW. If yes, the data cache space may be allocated to the UE. If not, the data cache space is not allocated to the UE.
  • the specific operation of the NW for allocating the data cache space to the UE is: determining according to the service indication.
  • the service type that the UE needs to transmit, and the data cache space allocated for the UE is determined according to the service type.
  • the service type of the UE includes a video service, a data service, and a voice service.
  • the NW determines that the service to be transmitted by the UE is a high-definition video service
  • the data buffer space with a capacity of 2G is allocated to the UE
  • the NW determines that the service that the UE needs to transmit is the standard definition video service
  • the data cache with a capacity of 200M is allocated to the UE. space.
  • the data buffer space allocated by the NW may also be a variable size space, and the specific space size varies according to the coding manner of the service data packet or the fragment size.
  • the NW sends a first response message to the UE.
  • the NW sends a first response message to the UE, where the UE receives the first response message, where the first response message is used to notify the UE of the allocated data cache space.
  • this step is an optional step.
  • the first response message includes a capacity of the data cache space allocated by the NW to the UE.
  • steps S204-S208 in the embodiment of the present invention are basically the same as steps S103-S107 in the embodiment described in FIG. 3, except that the information included in the first request message is included by the service indication (for example, step S105).
  • the first request message may include the identifier information of the data packet.
  • the service indication in step S206 may include the identifier information of the data packet, which is not described here.
  • the UE first requests the data cache space from the NW by sending the service indication and the UE supports the indication of the NW cache data packet, and at least a part of the data packet that the NW sends the SV to the UE is cached in the data.
  • the UE requests the buffered data packet from the NW by sending the second request message, and then the NW sends some or all of the buffered data packets to the UE, so that the NW can cache the data packet according to the request of the UE, thereby solving the data.
  • the problem of packet transmission during transmission is not timely.
  • the UE does not need to specifically send the first request message for requesting the NW allocation data buffer space, and only needs to send the service indication and the UE supports the NW cache data.
  • the instructions of the package can be simplified, simplifying the interaction process.
  • steps S101-S102 and steps S201-S203 are processes in which the UE and NW negotiate data buffer space and data buffer space allocation, and subsequent data.
  • the process of requesting and receiving is not always performed sequentially, that is, in the data transmission process of the UE, steps S101-S102 and steps S201-S203 are optional processes.
  • steps S103-S107 may be executed cyclically until the data packet transmission stops or the data packet transmission ends.
  • the allocation of the NW and UE interaction data cache space is not required, and the data cache space is predefined, and no explicit negotiation is required.
  • FIG. 5 is a schematic structural diagram of a network side device according to an embodiment of the present invention, where the NW is used to implement the NW in the embodiment described in FIG. 3 or FIG. 4.
  • the NW in the embodiment of the present invention may include at least a message receiving module 310, a data buffering module 320, and a data sending module 330.
  • the message receiving module 310 is configured to receive a first request message sent by the user equipment, where the first request message is used to request the network side device to allocate a data cache space.
  • the UE sends a first request message to the NW, and the message receiving module 310 receives the first request message, where the first request message is used to request the NW to allocate a data cache space.
  • the triggering time for the UE to send the first request message to the NW may be determined according to factors such as the service type of the UE, the network load, the channel quality, the current data processing rate, the total data to be processed, and the size of the local remaining buffer space. .
  • the data cache module 320 is configured to cache at least a portion of the data packet sent by the server device to the user equipment in the data cache space.
  • the data cache module 320 receives the data packet sent by the SV to the UE, and caches at least a part of the data in the data cache space.
  • the data cache module 320 may determine the buffered data packet according to the capacity of the data cache space allocated for the UE, and then cache the determined data packet in the data cache space.
  • the data cache module 320 may further determine the cached data packet according to the type of the data packet, and then cache the determined data packet in the data cache space.
  • the data cache module 320 caches all the data packets, and waits for the UE's request to send the cached data packets to the UE; or the data cache module 320 selectively caches the data packets to prevent the data packets from being sent. Delay, affecting the UE's business experience.
  • the message receiving module 310 is further configured to receive a second request message sent by the user equipment, where the second request message is used to request the network side device to send the cached data packet.
  • the UE sends a second request message to the NW, and the message receiving module 310 receives the second request message, where the second request message is used to request the NW to send the buffered data packet.
  • the second request message may be an RRC message, a layer 2 control cell, or an HTTP request.
  • the second request message includes at least one of the following information: 1 size information of the data packet requested by the UE. 2 Identification information of the data packet requested by the UE. 3 The storage location of the data packet requested by the UE.
  • the data sending module 330 is configured to send some or all of the data packets to the user equipment.
  • the data sending module 330 sends some or all of the cached data packets to the UE.
  • the first request message sent by the user equipment includes a capacity of a data cache space requested by the user equipment.
  • the network side device in the embodiment of the present invention may further include a space allocation module 340, configured to determine, according to the capacity of the data cache space requested by the first request message, The user equipment allocates the data cache space of a corresponding capacity.
  • the first request message sent by the user equipment further includes identifier information of the data packet, and is used to identify the data packet requested by the user equipment.
  • the data cache module 320 in the embodiment of the present invention may further include:
  • the data receiving unit 321 is configured to receive a data packet that is sent by the server device to the user equipment.
  • the data buffering unit 322 is configured to cache the data packet in the data cache space if the received identifier information included in the data packet is the same as the identifier information of the data packet included in the first request message. in.
  • the first request message sent by the user equipment includes a service indication, and an indication that the user equipment supports buffering data packets at the network side device.
  • the network side device in the embodiment of the present invention may further include a space allocation module 340, configured to cache data on the network side device according to the service indication and the user equipment support. The indication of the packet allocates a data cache space for the user equipment.
  • the network side device in the embodiment of the present invention may further include a message sending module 350, configured to send a first response message to the user equipment, where the first response message is used. Notifying the network device that the data cache space has been allocated.
  • the service indication further includes identifier information of the data packet, and is used to identify the The packet requested by the user device to be cached.
  • the data cache module 320 in the embodiment of the present invention may further include:
  • the data receiving unit 321 is configured to receive a data packet that is sent by the server device to the user equipment.
  • the data buffering unit 322 is configured to cache the data packet if the received identification information included in the data packet is the same as the identification information of the data packet included in the service indication.
  • FIG. 7 is a schematic structural diagram of a user equipment according to an embodiment of the present invention, where the UE is used to implement the UE in the embodiment described in FIG. 3 or FIG. 4.
  • the UE in the embodiment of the present invention may include at least a message sending module 410 and a data receiving module 420.
  • the message sending module 410 is configured to send a first request message to the network side device, where the first request message is used to request a data cache space from the network side device.
  • the message sending module 410 sends a first request message to the NW, where the NW receives the first request message, where the first request message is used to request the NW to allocate a data cache space.
  • the NW allocates a data buffer space for the UE.
  • the message sending module 410 is further configured to send a third request message to the server device, where the third request message is used to request the server device to send a data packet, where the network side device sends the data packet to the server device A portion is cached in the data cache space.
  • the message sending module 410 sends a third request message to the SV, and the SV receives the third request message.
  • the SV sends a data packet to the UE.
  • the SV first sends the data packet to the NW, so that the NW forwards the data packet to the UE.
  • the message sending module 410 is further configured to send a second request message to the network side device, where the second request message is used to request the network side device to send the cached data packet.
  • the message sending module 410 sends a second request message to the NW, where the NW receives the second request message, where the second request message is used to request the NW to send the buffered data packet.
  • the NW sends some or all of the data packets to the UE.
  • the data receiving module 420 is configured to receive part or all of the cached data packets sent by the network side device.
  • the user equipment in the embodiment of the present invention may further include The information receiving module 430 is configured to receive a first response message sent by the network side device, where the first response message is used to notify the network device that the data buffer space has been allocated.
  • the NW sends a first response message to the UE, where the first response message is used to notify the UE that the data cache space has been allocated.
  • the first response message includes a capacity of the data cache space allocated by the NW to the UE.
  • the message receiving module 430 receives the first response message sent by the NW.
  • FIG. 8 is a schematic structural diagram of another network side device according to an embodiment of the present invention.
  • the network side device may include: at least one processor 501, such as a CPU, at least one communication bus 502, at least one modulation. / demodulator 503, memory 504, wireless interface 505.
  • the communication bus 502 is used to implement connection communication between these components;
  • the wireless interface 505 is used for signaling or data communication with other node devices;
  • the memory 504 may be a high speed RAM memory or a nonvolatile memory (non -volatile emory), such as at least one disk storage.
  • the memory 504 may also be at least one storage device located away from the processor 501.
  • a set of program codes is stored in the memory 504, and the processor 501 is configured to call the program code stored in the memory 504 to perform the following operations:
  • At least a portion of a data packet sent by the server device to the user device is cached in the data cache space;
  • the first request message sent by the user equipment includes a capacity of a data cache space requested by the user equipment.
  • the processor 501 further performs:
  • the first request message sent by the user equipment further includes identifier information of the data packet, and is used to identify the data packet requested by the user equipment.
  • the processor 501 will serve The specific operation of at least a part of the data packet sent by the device to the user equipment is cached in the data cache space:
  • the data packet is cached in the data cache space.
  • the first request message sent by the user equipment includes a service indication, and an indication that the user equipment supports buffering data packets at the network side device.
  • the processor 501 further performs:
  • the user equipment is allocated a data buffer space according to the service indication and the indication that the user equipment supports the network side device to buffer the data packet.
  • the processor 501 allocates a data buffer space to the user equipment according to the service indication and the indication that the user equipment supports the network side device to buffer the data packet, the processor 501 further performs:
  • the service indication further includes identifier information of the data packet, and is used to identify the data packet requested by the user equipment.
  • the specific operation of the processor 501 to buffer at least a part of the data packet sent by the server device to the user equipment in the data cache space is:
  • the data packet is cached.
  • the second request message includes at least one of the following information:
  • the storage location of the data packet requested by the user equipment is the storage location of the data packet requested by the user equipment.
  • the second request message is a radio resource control RRC message or a hypertext transfer protocol HTTP request.
  • FIG. 9 is a schematic structural diagram of another user equipment in the embodiment of the present invention.
  • the user equipment may include: at least one processor 601, such as a CPU, at least one communication bus 602. At least one modulator/demodulator 603, memory 604, wireless interface 605.
  • the communication bus 602 is used to implement connection communication between these components; the wireless interface 605 is used for signaling or data communication with other node devices;
  • the memory 604 may be a high speed RAM memory or a nonvolatile memory (non -volatile emory), such as at least one disk storage.
  • the memory 604 may also be at least one storage device located away from the foregoing processor 601.
  • a set of program codes is stored in the memory 604, and the processor 601 is configured to call the program code stored in the memory 604 to perform the following operations:
  • the first request message includes a capacity of a data cache space requested by the user equipment.
  • the first request message further includes identifier information of the data packet, and is used to identify the data packet requested by the user equipment.
  • the first request message includes a service indication, and includes an indication that the user equipment supports buffering data packets at the network side device.
  • processor 601 sends the first request message to the network side device, it further performs:
  • the service indication further includes identifier information of the data packet, and is used to identify the data packet requested by the user equipment.
  • the second request message includes at least one of the following information:
  • the storage location of the data packet requested by the user equipment is the storage location of the data packet requested by the user equipment.
  • the second request message is a radio resource control RRC message or a hypertext transfer protocol HTTP request.
  • the embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores a program, and the program includes a plurality of instructions for executing a data packet transmission method described in the embodiments of the present invention. Some or all of the steps in .
  • the embodiment of the present invention further provides a communication system, which may include the NW described in FIG. 5, the UE and the SV described in FIG. 7.
  • the NW is configured to receive a first request message sent by the UE, where the first request message is used to request the NW to allocate a data buffer space; at least a part of the data packet sent by the SV to the UE is cached in the data buffer space; Sending a second request message, the second request message is used to request the NW to send the buffered data packet; and send part or all of the cached data packet to the UE;
  • the UE is configured to send a first request message to the NW, where the first request message is used to request a data cache space from the NW, and send a third request message to the SV, where the third request message is used to request the SV to send data.
  • a packet wherein the NW caches at least a portion of the SV transmission data packet in the data buffer space; and sends a second request message to the NW, the second request message is used to request the NW to send the buffered data packet; and receiving the NW transmission Part or all of the cached data packets.
  • the user equipment first requests the data cache space from the network side device by sending the first request message, and then the network side device caches at least a part of the data packet sent by the server device to the user equipment in the data cache space.
  • the user equipment requests the cached data packet from the network side device by sending the second request message, and the network side device sends some or all of the cached data packets to the user equipment, so that the network side device can cache the data packet according to the request of the user equipment.
  • the data packet thereby solving the problem that the data packet transmission during the data transmission process is not timely.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

本发明实施例公开了一种数据包的传输方法,包括:网络侧设备接收用户设备发送的第一请求消息,所述第一请求消息用于请求网络侧设备分配数据缓存空间;所述网络侧设备将服务器设备发送给所述用户设备的数据包至少一部分缓存在所述数据缓存空间中;所述网络侧设备接收所述用户设备发送的第二请求消息,所述第二请求消息用于请求所述网络侧设备发送缓存的所述数据包;所述网络侧设备向所述用户设备发送部分或全部的所述缓存的数据包。相应的,本发明实施例还公开了一种网络侧设备、用户设备以及通信系统。采用本发明,可以实现在网络侧缓存数据包,从而解决数据传输过程中的数据包传输不及时的问题。

Description

一种数据包的传输方法、网络侧设备以及用户设备 技术领域
本发明涉及通信技术领域,尤其涉及一种数据包的传输方法、网络侧设备以及用户设备。
背景技术
对于某些视频业务,终端的播放器设有缓存空间,用以存储待播放的数据。当缓存空间中的数据量较少时,终端会向服务器申请新的数据,继续放入缓存空间中以等待播放。通过将数据预先存储在缓存空间中,可以保障视频播放的连续性,在一定程度上可以避免因为网络质量差等原因导致的播放中断。
然而,由于缓存空间的容量有限,在数据传输过程中难免会因为网络的传输状况或者终端的信号质量等问题,导致终端无法及时从服务器获得新的数据,进而导致播放中断,影响了用户的观看体验。
发明内容
本发明实施例提供了一种数据包的传输方法、网络侧设备以及用户设备,可以实现在网络侧缓存数据包,从而解决数据传输过程中的数据包传输不及时的问题。
本发明实施例第一方面提供了一种数据包的传输方法,包括:网络侧设备接收用户设备发送的第一请求消息,该第一请求消息用于请求网络侧设备分配数据缓存空间,网络侧设备将服务器设备发送给用户设备的数据包至少一部分缓存在数据缓存空间中,然后,网络侧设备接收用户设备发送的第二请求消息,该第二请求消息用于请求网络侧设备发送缓存的数据包,网络侧设备向用户设备发送部分或全部的缓存的数据包。
在第一方面的第一种可能实现方式中,用户设备发送的第一请求消息中包含用户设备请求的数据缓存空间的容量,相应的,网络侧设备接收用户设备发送的第一请求消息之后,根据第一请求消息请求的数据缓存空间的容量,确定为用户设备分配相应容量的数据缓存空间。
结合第一方面以及第一方面的第一种可能实现方式,在第二种可能实现方式中,用户设备发送的第一请求消息还包含数据包的标识信息,用于标识用户设备所请求缓存的数据包,相应的,网络侧设备将服务器设备发送给用户设备的数据包至少一部分缓存在数据缓存空间中的具体操作为:接收服务器设备发送给用户设备的数据包,若接收到的数据包中包含的标识信息与第一请求消息中包含的数据包的标识信息相同,则将数据包缓存在数据缓存空间中。
在第一方面的第三种可能实现方式中,用户设备发送的第一请求消息包含业务指示,以及包含用户设备支持在网络侧设备缓存数据包的指示,相应的,网络侧设备接收用户设备发送的第一请求消息之后,还执行:网络侧设备根据业务指示和用户设备支持在网络侧设备缓存数据包的指示,为用户设备分配数据缓存空间。
结合第一方面的第三种可能实现方式,在第四种可能实现方式中,网络侧设备根据业务指示和用户设备支持在网络侧设备缓存数据包的指示,为用户设备分配数据缓存空间之后,还执行:向用户设备发送第一响应消息,该第一响应消息用于通知网络设备已分配数据缓存空间。
结合第一方面的第三或第四种可能实现方式,在第五种可能实现方式中,业务指示还包含数据包的标识信息,用于标识用户设备所请求缓存的数据包,相应的,网络侧设备将服务器设备发送给用户设备的数据包至少一部分缓存在数据缓存空间中的具体操作为:接收服务器设备发送给用户设备的数据包,若接收到的数据包中包含的标识信息与业务指示中包含的数据包的标识信息相同,则缓存数据包。
结合第一方面以及第一方面的第一至第五中任意一种可能实现方式,在第六种可能实现方式中,第二请求消息中包含以下信息中的至少一个:用户设备所请求的数据包的大小信息、用户设备所请求的数据包的标识信息以及用户设备所请求的数据包的存储位置。
结合第一方面以及第一方面的第一至第六中任意一种可能实现方式,在第七种可能实现方式中,第二请求消息为无线资源控制RRC消息,或者超文本传输协议HTTP请求。
本发明实施例第二方面提供了一种数据包的传输方法,包括:用户设备向网络侧设备发送第一请求消息,该第一请求消息用于向网络侧设备请求数据缓存空间,用户设备向服务器设备发送第三请求消息,该第三请求消息用于请求服务器设备发送数据包,其中,网络侧设备将服务器设备发送数据包至少一部分缓存在数据缓存空间,然后,用户设备向网络侧设备发送第二请求消息,该第二请求消息用于请求网络侧设备发送缓存的数据包,接着用户设备接收网络侧设备发送的部分或全部的缓存的数据包。
在第二方面的第一种可能实现方式中,用户设备发送的第一请求消息还包含数据包的标识信息,用于标识用户设备所请求缓存的数据包。
结合第二方面以及第二方面的第一种可能实现方式,在第二种可能实现方式中,用户设备发送的第一请求消息包含业务指示,以及包含用户设备支持在网络侧设备缓存数据包的指示。
在第二方面的第三种可能实现方式中,用户设备向网络侧设备发送第一请求消息之后,还执行:接收网络侧设备发送的第一响应消息,该第一响应消息用于通知网络设备已分配数据缓存空间。
结合第二方面的第三种可能实现方式,在第四种可能实现方式中,网络侧设备根据业务指示和用户设备支持在网络侧设备缓存数据包的指示,为用户设备分配数据缓存空间之后,还执行:向用户设备发送第一响应消息,该第一响应消息用于通知网络设备已分配数据缓存空间。
结合第二方面的第三或第四种可能实现方式,在第五种可能实现方式中,业务指示还包含数据包的标识信息,用于标识用户设备所请求缓存的数据包。
结合第二方面以及第二方面的第一至第五中任意一种可能实现方式,在第六种可能实现方式中,第二请求消息中包含以下信息中的至少一个:用户设备所请求的数据包的大小信息、用户设备所请求的数据包的标识信息以及用户设备所请求的数据包的存储位置。
结合第二方面以及第二方面的第一至第六中任意一种可能实现方式,在第七种可能实现方式中,第二请求消息为无线资源控制RRC消息,或者超文本传输协议HTTP请求。
本发明实施例第三方面提供了一种网络侧设备,所述网络侧设备具有实现上述第一方面提供的方法的行为功能,所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
本发明实施例第四方面提供了一种用户设备,所述用户设备具有实现上述第二方面提供的方法的行为功能,所述功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。
本发明实施例第五方面提供了一种网络侧设备,包括无线接口、调制/解调器、存储器以及处理器,其中,存储器中存储一组程序,且处理器用于调用存储器中存储的程序,执行以下操作:接收用户设备发送的第一请求消息,该第一请求消息用于请求网络侧设备分配数据缓存空间;将服务器设备发送给用户设备的数据包至少一部分缓存在数据缓存空间中;接收用户设备发送的第二请求消息,该第二请求消息用于请求网络侧设备发送缓存的所述数据包;向用户设备发送部分或全部的缓存的数据包。
本发明实施例第六方面提供了一种用户设备,包括无线接口、调制/解调器、存储器以及处理器,其中,存储器中存储一组程序,且处理器用于调用存储器中存储的程序,执行以下操作:向网络侧设备发送第一请求消息,该第一请求消息用于向网络侧设备请求数据缓存空间;向服务器设备发送第三请求消息,该第三请求消息用于请求服务器设备发送数据包,其中,网络侧设备将服务器设备发送数据包至少一部分缓存在数据缓存空间;向网络侧设备发送第二请求消息,该第二请求消息用于请求网络侧设备发送缓存的数据包;接收网络侧设备发送的部分或全部的缓存的数据包。
本发明实施例第七方面提供了一种通信系统,所述通信系统包括上述第三方面所描述的网络侧设备,如上述第四方面所描述的用户设备以及服务器设备。
由上可见,本发明实施例中,用户设备先通过发送第一请求消息向网络侧设备请求数据缓存空间,进而网络侧设备将服务器设备发送给用户设备的数据包至少一部分缓存在数据缓存空间中,用户设备再通过发送第二请求消息向网络侧设备请求缓存的数据包,进而网络侧设备向用户设备发送部分或全部的缓存的数据包,使得网络侧设备可以根据用户设备的请求为其缓存数据包,从而解决数据传输过程中的数据包传输不及时的问题。
附图说明
为了更清楚地说明本发明实施例,下面将对实施例中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例或现有技术,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的一种无线通信系统的场景示意图;
图2是现有技术中的一种数据包传输过程的示意图;
图3是本发明实施例提供的一种数据包的传输方法的流程示意图;
图4是本发明实施例提供的另一种数据包的传输方法的流程示意图;
图5是本发明实施例提供的一种网络侧设备的结构示意图;
图6是本发明实施例提供的一种数据缓存模块的结构示意图;
图7是本发明实施例提供的一种用户设备的结构示意图;
图8是本发明实施例提供的另一种网络侧设备的结构示意图;
图9是本发明实施例提供的另一种用户设备的结构示意图;
图10是本发明实施例提供的一种终端的层结构示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明实施例的技术方案可以应用于各种无线通信系统,例如:全球移动通讯(Global System of Mobile communication,简称为“GSM”)系统、码分多址(Code Division Multiple Access,简称为“CDMA”)系统、宽带码分多址(Wideband Code Division Multiple Access,简称为“WCDMA”)系统、通用分组无线业务(General Packet Radio Service,简称为“GPRS”)、长期演进(Long Term Evolution,简称为“LTE”)系统、LTE频分双工(Frequency Division Duplex,简称为“FDD”)系统、LTE时分双工(Time Division Duplex,简称为“TDD”)、通用移动通信系统(Universal Mobile Telecommunication System,简称为“UMTS”)或全球互联微波接入(Worldwide Interoperability for Microwave Access,简称为“WiMAX”)通信系统等。
请参阅图1,图1是本发明实施例中的无线通信系统的场景示意图,如图所示包括用户设备(User Equipment,简称为“UE”)、网络侧设备(Network,简称为“NW”)和服务器设备(Sever,简称为“SV”)。其中,所述用户设备可以经无线接入网(Radio Access Network,简称为“RAN”)与一个或多个核心网进行通信,例如,用户设备可以是移动电话(或称为“蜂窝”电话)或具有移动终端的计算机等,又如,用户设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。所述网络侧设备包括无线接入网设备、核心网设备或者两者结合的设备,可选的,还可以包括进行业务数据包传递过程中的任意中继设备,另外,网络侧设备还可以是上述各种设备(即无线接入网设备、核心网设备或者两者结合的设备,或者中继设备)的外接设备,所述外接设备可以将存储的数据包发送至上述各种设备。在本发明中,可以由网络侧设备中的控制面功能实体进行数据缓存空间的协商,用户面功能实体提供数据缓存空间。服务器设备用以响应服务请求,并进行处理,例如发送数据包等。
请参阅图2,图2是现有技术中UE与SV进行数据包传输的过程,NW在该过程中负责数据包的调度,即负责把UE发送的数据包请求消息传递到SV,或者把SV下发的数据包传递到UE。
本发明实施例中,NW缓存数据包主要是为了保障UE的业务连续性,UE主要用于请求缓存的数据包。需要指出的是,作为一种可选的实施方式,UE和NW的部分功能可以互换,即UE主要用于缓存数据包,NW主要用于请求 缓存的数据包,针对该实施方式下文不作单独介绍。
图3是本发明实施例中一种数据包的传输方法的流程示意图。如图所示本实施例中的数据包的传输方法的流程可以如下所述。
S101,UE向NW发送第一请求消息。
具体的,UE向NW发送第一请求消息,NW接收该第一请求消息,其中,所述第一请求消息用于请求NW分配数据缓存空间。需要指出的是,UE向NW发送第一请求消息的触发时机可以根据UE的业务类型、网络负载、信道质量、当前数据处理速率、需要处理的总数据以及本地缓存空间的大小等因素来确定。例如:假设UE正在播放视频,并且监测到网络负载大于预设阈值和/或信道质量低于预设指标,那么UE可以预判到播放视频会发生卡顿,此时向NW发送第一请求消息。
可选的,所述第一请求消息可以包含UE请求分配的数据缓存空间的容量。需要指出的是,UE请求分配的数据缓存空间的容量也可以根据网络负载、信道质量、当前数据处理速率、需要处理的总数据以及本地剩余缓存空间的大小等因素来综合估计。例如:假设UE正在播放高清视频,单位时间处理的数据较大(也就是说数据处理速率较大)以及需要处理的总数据量也较大,那么UE可以请求分配容量较大的数据缓存空间。
又可选的,所述第一请求消息可以包含数据包的标识信息,用于标识UE所请求缓存的数据包。原因在于,UE可能并不需要将所有待接收的数据包缓存在数据缓存空间,只需将部分待接收的数据包缓存在数据缓存空间即可。其中,所述数据包的标识信息可以是数据包的业务承载标识,也可以是数据包的业务地址信息,如IP(Internet Protocol,网络协议)地址等,当然也可以是其它能够标识数据包的信息,这里不做穷举。
S102,NW根据第一请求消息,为UE分配数据缓存空间。
具体的,NW接收第一请求消息之后,为UE分配数据缓存空间。
可选的,若第一请求消息包含UE请求分配的数据缓存空间的容量,则NW根据第一请求消息请求的数据缓存空间的容量,确定为UE分配相应容量的数据缓存空间。例如:假设第一请求消息中的数据缓存空间的容量为2G, 则NW尽可能地为UE分配2G的数据缓存空间。当然,若第一请求消息不包含UE请求分配的数据缓存空间的容量,则NW可以根据预设的容量或者UE的业务类型确定为UE分配的数据缓存空间,其中,UE的业务类型包括视频业务、数据业务和语音业务等。
进一步的,NW确定为UE分配的数据缓存空间之后,向UE发送第一响应消息,所述第一响应消息用于通知UE已分配数据缓存空间。可选的,第一响应消息包含NW为UE分配的数据缓存空间的容量。
S103,UE向SV发送第三请求消息。
具体的,UE向SV发送第三请求消息,SV接收该第三请求消息,其中,所述第三请求消息用于请求SV发送数据包。可选的,该第三请求消息为HTTP(Transmission Control Protocol,传输控制协议)类型,或者HTTPS(HTTP over Secure socket layer,以安全为目标的HTTP通道)类型的数据包请求消息。
S104,SV根据第三请求消息,通过NW向UE发送数据包。
具体的,SV接收第三请求消息之后,向UE发送数据包,具体实现过程中,SV先将数据包发送给NW,以使NW将数据包转发给UE。
S105,NW将SV发送给UE的数据包至少一部分缓存在数据缓存空间中。
具体的,NW接收SV发送给UE的数据包,并将至少一部分缓存在数据缓存空间中。具体实现过程中,NW可以根据为UE分配的数据缓存空间的容量,确定缓存的数据包,再将确定的数据包缓存在数据缓存空间中。可选的,NW缓存所有的数据包,等待UE的请求之后再将缓存的数据包发送给UE;或者NW有选择地缓存部分的数据包,避免数据包下发的延迟,影响UE的业务体验。例如:假设NW为UE分配的数据缓存空间的容量为500M,若NW接收到总大小为300M的多个数据包,则将所有的数据包缓存在数据缓存空间中;若NW接收到总大小为800M的多个数据包,则将其中500M(或接近500M)的一部分数据包缓存在数据缓存空间中,将多余的另一部分数据包直接发送给UE。另外,NW还可以根据数据包的类型,确定缓存的数据包,再将确定的数据包缓存在数据缓存空间中。例如:假设NW接收到两种类型的数据包,一类为视频数据,另一类为即时消息数据,那么NW可以将视频数据缓存在数据缓存空间中,将即时消息数据直接发送给UE。
又可选的,若第一请求消息包含数据包的标识信息,则当NW接收到的数据包中包含的标识信息与第一请求消息中包含的数据包的标识信息相同时,将接收到的数据包缓存在数据缓存空间中。相应的,当NW接收到的数据包中包含的标识信息与第一请求消息中包含的数据包的标识信息不相同时,直接将数据包发送至UE。
需要指出的是,如果UE与SV之间传输层是采用的TCP的方式进行数据包传输的,那么本发明实施例还包括:NW通知SV的TCP层会缓存SV发送给UE的业务数据包;或者NW每次将接收到的数据包缓存之后,向SV的TCP层发送通知消息,所述通知消息用于让SV的TCP层得知NW缓存了数据包。原因在于,根据TCP的规定,SV通过NW向UE发送数据包之后,UE需要向SV的TCP层发送反馈消息,以使TCP层得知数据包发送成功,否则TCP层会减小发送窗口的大小和/或重复向UE发送数据包直至收到反馈消息。可见,本发明实施例可以避免NW将接收到的数据包缓存之后TCP层因接收不到UE发送的反馈消息而影响TCP层的吞吐量和/或重复发送数据包的问题。
S106,UE向NW发送第二请求消息。
具体的,UE向NW发送第二请求消息,NW接收该第二请求消息,其中,所述第二请求消息用于请求NW发送数据缓存空间中的数据包。本发明实施例中,所述第二请求消息可以是RRC(Radio Resource Control,无线资源控制)消息、层二控制信元或者HTTP请求。
可选的,第二请求消息中包含以下信息中的至少一个:①UE所请求的数据包的大小信息。②UE所请求的数据包的标识信息。③UE所请求的数据包的存储位置。其中,针对②的情况,数据包的标识可以是数据包的序列号,用以UE和NW唯一的识别第一缓存空间中的数据包。
作为一种可选的实施方式,UE向NW发送的第二请求消息,可以与再次向SV发送的第三请求消息放在一个消息中,所述再次向SV发送的第三请求消息用于请求SV发送新的数据包。可选的,第二请求消息携带于第三请求消息的传输层或者IP层或者接入层的协议层包头中。例如:当UE向SV发送第三请求消息请求SV发送第N个数据包时,UE在第三请求消息中携带向NW请求数据缓存空间中缓存的第N-1个数据包的第二请求消息,其中N为大于1 正整数。该实施方式的优点在于,节省了UE发送请求消息的次数,简化了交互过程。
需要指出的是,请参阅图10所示的UE的层结构,UE向NW发送的第二请求消息,可以是UE的应用层或者操作系统向底层发送指示消息之后触发的,也可以是UE的应用层直接发送第三请求消息的数据包时触发的,其中数据包的头中包含指示底层触发第二请求消息的指示信息,例如:数据包的TCP或者IP头中包含该指示信息,具体的,该指示信息也可以为NW的标识信息,例如:NW的IP地址等。
S107,NW根据第二请求消息,向UE发送部分或全部的缓存的数据包。
具体的,NW接收第二请求消息之后,向UE发送缓存在数据缓存空间中的部分或全部的数据包。
可选的,①若第二请求消息中包含UE所请求的数据包的大小信息,则NW按照缓存数据包的时间先后顺序,按照先入先出原则,向UE发送大小信息对应的数据包。例如:假设第二请求消息中包含的数据包的大小信息为200M,那么NW将最先缓存的总大小为200M的数据包发送给UE,若缓存的数据包的总大小不足200M,则将全部数据包发送给UE。②若第二请求消息中包含UE所请求的数据包的标识信息,则NW向UE发送标识信息对应的数据包。③若第二请求消息中包含UE所请求的数据包的存储位置,则NW向UE发送存储位置对应的数据包。
作为一种可选的实施方式,若UE向NW发送的第二请求消息,与再次向SV发送的第三请求消息放在一个消息中,则NW从该消息中解析出第二请求消息,并根据第二请求消息,向UE发送部分或全部的数据包。
作为另一种可选的实施方式,步骤S106中,UE也可以不向NW发送第二请求消息,在UE再次向SV发送的第三请求消息时,NW根据该消息确定是否向UE发送部分或全部的数据包。在该实施方式中,NW需要识别出第三请求消息。进一步的,NW可以直接向SV发送第三请求消息,无需UE发送。
由上可见,本发明实施例中,UE先通过发送第一请求消息向NW请求数据缓存空间,进而NW将SV发送给UE的数据包至少一部分缓存在数据缓存空间中,UE再通过发送第二请求消息向NW请求缓存的数据包,进而NW向 UE发送部分或全部的缓存的数据包,使得NW可以根据UE的请求为其缓存数据包,从而解决数据传输过程中的数据包传输不及时的问题。
图4是本发明实施例中另一种数据包的传输方法的流程示意图。如图所示本实施例中的数据包的传输方法的流程可以如下所述。
S201,UE向NW发送业务指示和UE支持在所述NW缓存数据包的指示。
其中,所述业务指示用于向NW指示需要传输的业务,例如视频数据业务、语音数据业务等。另外,UE支持在NW缓存数据包的指示用于向NW指示UE的能力,即表示UE可以支持NW对数据包进行缓存。需要说明的是,UE所发送的业务指示和支持NW缓存数据包的指示可以不在同一个消息中发送,例如:UE可以在接入到网络的时候发送支持在NW缓存数据包的指示,UE在业务开始的时候发送业务指示。可见,步骤201并不限定UE发送上述信息的先后顺序。需要指出的是,UE针对传输的所有业务都会上报业务指示,但并不是所有的业务都要缓存在数据缓存空间,即只有部分的业务需要缓存在数据缓存空间,或者只有部分的业务能够缓存在数据缓存空间。
可选的,UE向NW发送业务指示和UE支持在所述NW缓存数据包的指示的触发时机可以根据网络负载、信道质量、当前数据处理速率、需要处理的总数据以及本地剩余缓存空间的大小等因素来确定。例如:假设UE正在播放视频,并且监测到网络负载较大和信道质量较差,那么UE可以预判到播放视频将会卡顿,故向NW发送业务指示和UE支持在所述NW缓存数据包的指示。
可选的,所述业务指示可以包含数据包的标识信息,用于标识UE所请求缓存的数据包。
S202,NW根据业务指示和UE支持在所述NW缓存数据包的指示,为UE分配数据缓存空间。
具体的,当NW接收到业务指示时,判断是否接收到UE支持在NW缓存数据包的指示,若是,则可以为UE分配数据缓存空间,若否,则不为UE分配数据缓存空间。
可选的,NW为UE分配数据缓存空间的具体操作为:根据业务指示确定 UE需要传输的业务类型,进而根据业务类型确定为UE分配的数据缓存空间,其中,UE的业务类型包括视频业务、数据业务和语音业务等。例如:当NW确定UE需要传输的业务为高清视频业务时,为UE分配容量为2G的数据缓存空间;当NW确定UE需要传输的业务为标清视频业务时,为UE分配容量为200M的数据缓存空间。需要说明的是,NW分配的数据缓存空间也可以是一个可变大小的空间,具体的空间大小根据业务数据包的编码方式或者分片大小变化。
S203,NW向UE发送第一响应消息。
具体的,NW向UE发送第一响应消息,UE接收该第一响应消息,其中,所述第一响应消息用于通知UE已分配的数据缓存空间。其中,该步骤为可选的步骤。
又可选的,第一响应消息包含NW为UE分配的数据缓存空间的容量。
需要说明的是,本发明实施例中的步骤S204-S208与图3所描述的实施例中的步骤S103-S107基本相同,区别在于第一请求消息包含的信息由业务指示包含(例如,步骤S105中的第一请求消息可以包含数据包的标识信息,相应的,步骤S206中的业务指示可以包含数据包的标识信息),这里不再赘述。
由上可见,本发明实施例中,UE先通过发送业务指示和UE支持在所述NW缓存数据包的指示向NW请求数据缓存空间,进而NW将SV发送给UE的数据包至少一部分缓存在数据缓存空间中,UE再通过发送第二请求消息向NW请求缓存的数据包,进而NW向UE发送部分或全部的缓存的数据包,使得NW可以根据UE的请求为其缓存数据包,从而解决数据传输过程中的数据包传输不及时的问题。需要指出的是,本发明实施例相较于图3所描述的实施例,UE不用专门发送用于请求NW分配数据缓存空间的第一请求消息,只需发送业务指示和UE支持在NW缓存数据包的指示即可,简化了交互过程。
另外,还需要说明的是,在图3和图4所描述的实施例中,步骤S101-S102以及步骤S201-S203是UE和NW协商数据缓存空间和数据缓存空间分配的过程,和后续的数据请求和接收的过程并不总是顺序的执行,即在UE的数据传输过程中,步骤S101-S102以及步骤S201-S203是可选的过程。在执行了一次 S101-S102确定了数据缓存空间之后,步骤S103-S107可能会循环执行,直至数据包传输停止或者数据包传输结束。在另一种可行的实施方式中,不需要NW和UE交互数据缓存空间的分配,数据缓存空间是预定义的,无需显式协商。
图5是本发明实施例中一种网络侧设备的结构示意图,该NW用于实现图3或图4所描述的实施例中的NW。如图所示本发明实施例中的NW至少可以包括消息接收模块310、数据缓存模块320以及数据发送模块330。
消息接收模块310,用于接收用户设备发送的第一请求消息,所述第一请求消息用于请求网络侧设备分配数据缓存空间。
具体的,UE向NW发送第一请求消息,消息接收模块310接收该第一请求消息,其中,所述第一请求消息用于请求NW分配数据缓存空间。需要指出的是,UE向NW发送第一请求消息的触发时机可以根据UE的业务类型、网络负载、信道质量、当前数据处理速率、需要处理的总数据以及本地剩余缓存空间的大小等因素来确定。
数据缓存模块320,用于将服务器设备发送给所述用户设备的数据包至少一部分缓存在所述数据缓存空间中。
具体的,数据缓存模块320接收SV发送给UE的数据包,并将至少一部分缓存在数据缓存空间中。具体实现过程中,数据缓存模块320可以根据为UE分配的数据缓存空间的容量,确定缓存的数据包,再将确定的数据包缓存在数据缓存空间中。另外,数据缓存模块320还可以根据数据包的类型,确定缓存的数据包,再将确定的数据包缓存在数据缓存空间中。可选的,数据缓存模块320会缓存所有的数据包,等待UE的请求之后再将缓存的数据包发送给UE;或者数据缓存模块320有选择地缓存所述数据包,避免数据包下发的延迟,影响UE的业务体验。
消息接收模块310,还用于接收所述用户设备发送的第二请求消息,所述第二请求消息用于请求所述网络侧设备发送缓存的所述数据包。
具体的,UE向NW发送第二请求消息,消息接收模块310接收该第二请求消息,其中,所述第二请求消息用于请求NW发送缓存的数据包。
可选的,所述第二请求消息可以是RRC消息、层二控制信元或者HTTP请求。
可选的,第二请求消息中包含以下信息中的至少一个:①UE所请求的数据包的大小信息。②UE所请求的数据包的标识信息。③UE所请求的数据包的存储位置。
数据发送模块330,用于向所述用户设备发送部分或全部的所述数据包。
具体的,数据发送模块330接收第二请求消息之后,向UE发送部分或全部的缓存的数据包。
可选的,所述用户设备发送的第一请求消息中包含所述用户设备请求的数据缓存空间的容量。相应的,请参阅图5,如图所示本发明实施例中的网络侧设备还可以包括空间分配模块340,用于根据所述第一请求消息请求的所述数据缓存空间的容量,确定为所述用户设备分配相应容量的所述数据缓存空间。
进一步可选的,所述用户设备发送的第一请求消息还包含数据包的标识信息,用于标识所述用户设备所请求缓存的数据包。具体实现过程中,如图6所示本发明实施例中的数据缓存模块320还可以进一步包括:
数据接收单元321,用于接收所述服务器设备发送给所述用户设备的数据包。
数据缓存单元322,用于若接收到的所述数据包中包含的标识信息与所述第一请求消息中包含的数据包的标识信息相同,则将所述数据包缓存在所述数据缓存空间中。
又可选的,所述用户设备发送的第一请求消息包含业务指示,以及包含所述用户设备支持在所述网络侧设备缓存数据包的指示。相应的,请参阅图5,如图所示本发明实施例中的网络侧设备还可以包括空间分配模块340,用于根据所述业务指示和所述用户设备支持在所述网络侧设备缓存数据包的指示,为所述用户设备分配数据缓存空间。
进一步的,请参阅图5,如图所示本发明实施例中的网络侧设备还可以包括消息发送模块350,用于向所述用户设备发送第一响应消息,所述第一响应消息用于通知所述网络设备已分配数据缓存空间。
进一步可选的,所述业务指示还包含数据包的标识信息,用于标识所述用 户设备所请求缓存的数据包。具体实现过程中,如图6所示本发明实施例中的数据缓存模块320还可以进一步包括:
数据接收单元321,用于接收所述服务器设备发送给所述用户设备的数据包。
数据缓存单元322,用于若接收到的所述数据包中包含的标识信息与所述业务指示中包含的数据包的标识信息相同,则缓存所述数据包。
图7是本发明实施例中一种用户设备的结构示意图,该UE用于实现图3或图4所描述的实施例中的UE。如图所示本发明实施例中的UE至少可以包括消息发送模块410和数据接收模块420。
消息发送模块410,用于向网络侧设备发送第一请求消息,所述第一请求消息用于向网络侧设备请求数据缓存空间。
具体的,消息发送模块410向NW发送第一请求消息,NW接收该第一请求消息,其中,所述第一请求消息用于请求NW分配数据缓存空间。相应的,NW接收第一请求消息之后,为UE分配数据缓存空间。
消息发送模块410,还用于向服务器设备发送第三请求消息,所述第三请求消息用于请求所述服务器设备发送数据包,其中,所述网络侧设备将所述服务器设备发送数据包至少一部分缓存在所述数据缓存空间。
具体的,消息发送模块410向SV发送第三请求消息,SV接收该第三请求消息。相应的,SV接收第三请求消息之后,向UE发送数据包,具体实现过程中,SV先将数据包发送给NW,以使NW将数据包转发给UE。
消息发送模块410,还用于向所述网络侧设备发送第二请求消息,所述第二请求消息用于请求所述网络侧设备发送缓存的所述数据包。
具体的,消息发送模块410向NW发送第二请求消息,NW接收该第二请求消息,其中,所述第二请求消息用于请求NW发送缓存的数据包。相应的,NW接收第二请求消息之后,向UE发送部分或全部的数据包。
数据接收模块420,用于接收所述网络侧设备发送的部分或全部的所述缓存的数据包。
可选的,请参阅图7,如图所示本发明实施例中的用户设备还可以包括消 息接收模块430,用于接收所述网络侧设备发送的第一响应消息,所述第一响应消息用于通知所述网络设备已分配数据缓存空间。
相应的,NW确定为UE分配的数据缓存空间之后,向UE发送第一响应消息,所述第一响应消息用于通知UE已分配数据缓存空间。可选的,第一响应消息包含NW为UE分配的数据缓存空间的容量。具体的,消息接收模块430接收NW发送的第一响应消息。
图8是本发明实施例中的另一种网络侧设备的结构示意图,如图8所示,该网络侧设备可以包括:至少一个处理器501,例如CPU,至少一个通信总线502,至少一个调制/解调器503,存储器504,无线接口505。其中,通信总线502用于实现这些组件之间的连接通信;无线接口505用于与其他节点设备进行信令或数据的通信;存储器504可以是高速RAM存储器,也可以是非易失的存储器(non-volatile emory),例如至少一个磁盘存储器。可选的,存储器504还可以是至少一个位于远离前述处理器501的存储装置。存储器504中存储一组程序代码,处理器501用于调用存储器504中存储的程序代码,执行以下操作:
接收用户设备发送的第一请求消息,所述第一请求消息用于请求网络侧设备分配数据缓存空间;
将服务器设备发送给所述用户设备的数据包至少一部分缓存在所述数据缓存空间中;
接收所述用户设备发送的第二请求消息,所述第二请求消息用于请求所述网络侧设备发送缓存的所述数据包;
向所述用户设备发送部分或全部的所述缓存的数据包。
可选的,所述用户设备发送的第一请求消息中包含所述用户设备请求的数据缓存空间的容量。相应的,所述处理器501接收用户设备发送的第一请求消息之后,还执行:
根据所述第一请求消息请求的所述数据缓存空间的容量,确定为所述用户设备分配相应容量的所述数据缓存空间。
进一步可选的,所述用户设备发送的第一请求消息还包含数据包的标识信息,用于标识所述用户设备所请求缓存的数据包。相应的,处理器501将服务 器设备发送给所述用户设备的数据包至少一部分缓存在所述数据缓存空间中的具体操作为:
接收所述服务器设备发送给所述用户设备的数据包;
若接收到的所述数据包中包含的标识信息与所述第一请求消息中包含的数据包的标识信息相同,则将所述数据包缓存在所述数据缓存空间中。
又可选的,所述用户设备发送的第一请求消息包含业务指示,以及包含所述用户设备支持在所述网络侧设备缓存数据包的指示。相应的,处理器501接收用户设备发送的第一请求消息之后,还执行:
根据所述业务指示和所述用户设备支持在所述网络侧设备缓存数据包的指示,为所述用户设备分配数据缓存空间。
进一步的,处理器501根据所述业务指示和所述用户设备支持在所述网络侧设备缓存数据包的指示,为所述用户设备分配数据缓存空间之后,还执行:
向所述用户设备发送第一响应消息,所述第一响应消息用于通知所述网络设备已分配数据缓存空间。
进一步可选的,所述业务指示还包含数据包的标识信息,用于标识所述用户设备所请求缓存的数据包。相应的,处理器501将服务器设备发送给所述用户设备的数据包至少一部分缓存在所述数据缓存空间中的具体操作为:
接收所述服务器设备发送给所述用户设备的数据包;
若接收到的所述数据包中包含的标识信息与所述业务指示中包含的数据包的标识信息相同,则缓存所述数据包。
又可选的,所述第二请求消息中包含以下信息中的至少一个:
所述用户设备所请求的数据包的大小信息;
所述用户设备所请求的数据包的标识信息;
所述用户设备所请求的数据包的存储位置。
又可选的,所述第二请求消息为无线资源控制RRC消息,或者超文本传输协议HTTP请求。
图9是本发明实施例中的另一种用户设备的结构示意图,如图9所示,该用户设备可以包括:至少一个处理器601,例如CPU,至少一个通信总线602, 至少一个调制/解调器603,存储器604,无线接口605。其中,通信总线602用于实现这些组件之间的连接通信;无线接口605用于与其他节点设备进行信令或数据的通信;存储器604可以是高速RAM存储器,也可以是非易失的存储器(non-volatile emory),例如至少一个磁盘存储器。可选的,存储器604还可以是至少一个位于远离前述处理器601的存储装置。存储器604中存储一组程序代码,处理器601用于调用存储器604中存储的程序代码,执行以下操作:
向网络侧设备发送第一请求消息,所述第一请求消息用于向网络侧设备请求数据缓存空间;
向服务器设备发送第三请求消息,所述第三请求消息用于请求所述服务器设备发送数据包,其中,所述网络侧设备将所述服务器设备发送数据包至少一部分缓存在所述数据缓存空间;
向所述网络侧设备发送第二请求消息,所述第二请求消息用于请求所述网络侧设备发送缓存的所述数据包;
接收所述网络侧设备发送的部分或全部的所述缓存的数据包。
可选的,所述第一请求消息中包含所述用户设备请求的数据缓存空间的容量。
进一步可选的,所述第一请求消息还包含数据包的标识信息,用于标识所述用户设备所请求缓存的数据包。
又可选的,所述第一请求消息包含业务指示,以及包含所述用户设备支持在所述网络侧设备缓存数据包的指示。
进一步的,处理器601向网络侧设备发送第一请求消息之后,还执行:
接收所述网络侧设备发送的第一响应消息,所述第一响应消息用于通知所述网络设备已分配数据缓存空间。
进一步可选的,所述业务指示还包含数据包的标识信息,用于标识所述用户设备所请求缓存的数据包。
又可选的,所述第二请求消息中包含以下信息中的至少一个:
所述用户设备所请求的数据包的大小信息;
所述用户设备所请求的数据包的标识信息;
所述用户设备所请求的数据包的存储位置。
又可选的,所述第二请求消息为无线资源控制RRC消息,或者超文本传输协议HTTP请求。
本发明实施例还提出了一种计算机存储介质,所述计算机存储介质存储有程序,所述程序包括若干指令用以执行本发明实施例图3~图4所描述的一种数据包的传输方法中的部分或全部的步骤。
本发明实施例还提供一种通信系统,可以包括图5所描述的NW,图7所描述的UE以及SV。
所述NW用于接收UE发送的第一请求消息,所述第一请求消息用于请求NW分配数据缓存空间;将SV发送给UE的数据包至少一部分缓存在所述数据缓存空间中;接收UE发送的第二请求消息,所述第二请求消息用于请求NW发送缓存的所述数据包;向UE发送部分或全部的所述缓存的数据包;
所述UE用于向NW发送第一请求消息,所述第一请求消息用于向NW请求数据缓存空间;向SV发送第三请求消息,所述第三请求消息用于请求所述SV发送数据包,其中,NW将SV发送数据包至少一部分缓存在所述数据缓存空间;向NW发送第二请求消息,所述第二请求消息用于请求NW发送缓存的所述数据包;接收NW发送的部分或全部的所述缓存的数据包。
由上可见,本发明实施例中,用户设备先通过发送第一请求消息向网络侧设备请求数据缓存空间,进而网络侧设备将服务器设备发送给用户设备的数据包至少一部分缓存在数据缓存空间中,用户设备再通过发送第二请求消息向网络侧设备请求缓存的数据包,进而网络侧设备向用户设备发送部分或全部的缓存的数据包,使得网络侧设备可以根据用户设备的请求为其缓存数据包,从而解决数据传输过程中的数据包传输不及时的问题。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程,是可以通过计算机程序来指令相关的硬件来完成,所述的程序可存储于一计算机可读取存储介质中,该程序在执行时,可包括如上述各方法的实施例的流程。 其中,所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory,ROM)或随机存储记忆体(Random Access Memory,RAM)等。
以上所揭露的仅为本发明较佳实施例而已,当然不能以此来限定本发明之权利范围,因此依本发明权利要求所作的等同变化,仍属本发明所涵盖的范围。

Claims (35)

  1. 一种数据包的传输方法,其特征在于,所述方法包括:
    网络侧设备接收用户设备发送的第一请求消息,所述第一请求消息用于请求网络侧设备分配数据缓存空间;
    所述网络侧设备将服务器设备发送给所述用户设备的数据包至少一部分缓存在所述数据缓存空间中;
    所述网络侧设备接收所述用户设备发送的第二请求消息,所述第二请求消息用于请求所述网络侧设备发送缓存的所述数据包;
    所述网络侧设备向所述用户设备发送部分或全部的所述缓存的数据包。
  2. 如权利要求1所述的方法,其特征在于,所述用户设备发送的第一请求消息中包含所述用户设备请求的数据缓存空间的容量;
    所述网络侧设备接收用户设备发送的第一请求消息之后,还包括:
    所述网络侧设备根据所述第一请求消息请求的所述数据缓存空间的容量,确定为所述用户设备分配相应容量的所述数据缓存空间。
  3. 如权利要求1或2所述的方法,其特征在于,所述用户设备发送的第一请求消息还包含数据包的标识信息,用于标识所述用户设备所请求缓存的数据包;
    所述网络侧设备将服务器设备发送给所述用户设备的数据包至少一部分缓存在所述数据缓存空间中,包括:
    所述网络侧设备接收所述服务器设备发送给所述用户设备的数据包;
    若所述网络侧设备接收到的所述数据包中包含的标识信息与所述第一请求消息中包含的数据包的标识信息相同,则将所述数据包缓存在所述数据缓存空间中。
  4. 如权利要求1所述的方法,其特征在于,所述用户设备发送的第一请求消息包含业务指示,以及包含所述用户设备支持在所述网络侧设备缓存数据 包的指示;
    所述网络侧设备接收用户设备发送的第一请求消息之后,还包括:
    所述网络侧设备根据所述业务指示和所述用户设备支持在所述网络侧设备缓存数据包的指示,为所述用户设备分配数据缓存空间。
  5. 如权利要求4所述的方法,其特征在于,所述网络侧设备根据所述业务指示和所述用户设备支持在所述网络侧设备缓存数据包的指示,为所述用户设备分配数据缓存空间之后,还包括:
    所述网络侧设备向所述用户设备发送第一响应消息,所述第一响应消息用于通知所述网络设备已分配数据缓存空间。
  6. 如权利要求4或5所述的方法,其特征在于,所述业务指示还包含数据包的标识信息,用于标识所述用户设备所请求缓存的数据包;
    所述网络侧设备将服务器设备发送给所述用户设备的数据包至少一部分缓存在所述数据缓存空间中,包括:
    所述网络侧设备接收所述服务器设备发送给所述用户设备的数据包;
    若所述网络侧设备接收到的所述数据包中包含的标识信息与所述业务指示中包含的数据包的标识信息相同,则缓存所述数据包。
  7. 如权利要求1-6任一项所述的方法,其特征在于,所述第二请求消息中包含以下信息中的至少一个:
    所述用户设备所请求的数据包的大小信息;
    所述用户设备所请求的数据包的标识信息;
    所述用户设备所请求的数据包的存储位置。
  8. 如权利要求1-7任一项所述的方法,其特征在于,所述第二请求消息为无线资源控制RRC消息,或者超文本传输协议HTTP请求。
  9. 一种数据包的传输方法,其特征在于,所述方法包括:
    用户设备向网络侧设备发送第一请求消息,所述第一请求消息用于向网络侧设备请求数据缓存空间;
    所述用户设备向服务器设备发送第三请求消息,所述第三请求消息用于请求所述服务器设备发送数据包,其中,所述网络侧设备将所述服务器设备发送数据包至少一部分缓存在所述数据缓存空间;
    所述用户设备向所述网络侧设备发送第二请求消息,所述第二请求消息用于请求所述网络侧设备发送缓存的所述数据包;
    所述用户设备接收所述网络侧设备发送的部分或全部的所述缓存的数据包。
  10. 如权利要求9所述的方法,其特征在于,所述用户设备发送的第一请求消息中包含所述用户设备请求的数据缓存空间的容量。
  11. 如权利要求9或10所述的方法,其特征在于,所述用户设备发送的第一请求消息还包含数据包的标识信息,用于标识所述用户设备所请求缓存的数据包。
  12. 如权利要求9所述的方法,其特征在于,所述用户设备发送的第一请求消息包含业务指示,以及包含所述用户设备支持在所述网络侧设备缓存数据包的指示。
  13. 如权利要12所述的方法,其特征在于,所述用户设备向网络侧设备发送第一请求消息之后,还包括:
    所述用户设备接收所述网络侧设备发送的第一响应消息,所述第一响应消息用于通知所述网络设备已分配数据缓存空间。
  14. 如权利要求12或13所述的方法,其特征在于,所述业务指示还包含数据包的标识信息,用于标识所述用户设备所请求缓存的数据包。
  15. 如权利要求9-14任一项所述的方法,其特征在于,所述第二请求消息中包含以下信息中的至少一个:
    所述用户设备所请求的数据包的大小信息;
    所述用户设备所请求的数据包的标识信息;
    所述用户设备所请求的数据包的存储位置。
  16. 如权利要求9-15任一项所述的方法,其特征在于,所述第二请求消息为无线资源控制RRC消息,或者超文本传输协议HTTP请求。
  17. 一种网络侧设备,其特征在于,所述网络侧设备包括:
    消息接收模块,用于接收用户设备发送的第一请求消息,所述第一请求消息用于请求网络侧设备分配数据缓存空间;
    数据缓存模块,用于将服务器设备发送给所述用户设备的数据包至少一部分缓存在所述数据缓存空间中;
    所述消息接收模块,还用于接收所述用户设备发送的第二请求消息,所述第二请求消息用于请求所述网络侧设备发送缓存的所述数据包;
    数据发送模块,用于向所述用户设备发送部分或全部的所述缓存的数据包。
  18. 如权利要求17所述的网络侧设备,其特征在于,所述用户设备发送的第一请求消息中包含所述用户设备请求的数据缓存空间的容量;
    所述网络侧设备还包括:
    空间分配模块,用于根据所述第一请求消息请求的所述数据缓存空间的容量,确定为所述用户设备分配相应容量的所述数据缓存空间。
  19. 如权利要求17或18所述的网络侧设备,其特征在于,所述用户设备发送的第一请求消息还包含数据包的标识信息,用于标识所述用户设备所请求缓存的数据包;
    所述数据缓存模块,包括:
    数据接收单元,用于接收所述服务器设备发送给所述用户设备的数据包;
    数据缓存单元,用于若接收到的所述数据包中包含的标识信息与所述第一请求消息中包含的数据包的标识信息相同,则将所述数据包缓存在所述数据缓存空间中。
  20. 如权利要求17所述的网络侧设备,其特征在于,所述用户设备发送的第一请求消息包含业务指示,以及包含所述用户设备支持在所述网络侧设备缓存数据包的指示;
    所述网络侧设备还包括:
    空间分配模块,用于根据所述业务指示和所述用户设备支持在所述网络侧设备缓存数据包的指示,为所述用户设备分配数据缓存空间。
  21. 如权利要求20所述的网络侧设备,其特征在于,所述网络侧设备还包括:
    消息发送模块,用于向所述用户设备发送第一响应消息,所述第一响应消息用于通知所述网络设备已分配数据缓存空间。
  22. 如权利要求20或21所述的网络侧设备,其特征在于,所述业务指示还包含数据包的标识信息,用于标识所述用户设备所请求缓存的数据包;
    所述数据缓存模块,包括:
    数据接收单元,用于接收所述服务器设备发送给所述用户设备的数据包;
    数据缓存单元,用于若接收到的所述数据包中包含的标识信息与所述业务指示中包含的数据包的标识信息相同,则缓存所述数据包。
  23. 如权利要求17-22任一项所述的网络侧设备,其特征在于,所述第二请求消息中包含以下信息中的至少一个:
    所述用户设备所请求的数据包的大小信息;
    所述用户设备所请求的数据包的标识信息;
    所述用户设备所请求的数据包的存储位置。
  24. 如权利要求17-23任一项所述的网络侧设备,其特征在于,所述第二请求消息为无线资源控制RRC消息,或者超文本传输协议HTTP请求。
  25. 一种用户设备,其特征在于,所述用户设备包括:
    消息发送模块,用于向网络侧设备发送第一请求消息,所述第一请求消息用于向网络侧设备请求数据缓存空间;
    所述消息发送模块,还用于向服务器设备发送第三请求消息,所述第三请求消息用于请求所述服务器设备发送数据包,其中,所述网络侧设备将所述服务器设备发送数据包至少一部分缓存在所述数据缓存空间;
    所述消息发送模块,还用于向所述网络侧设备发送第二请求消息,所述第二请求消息用于请求所述网络侧设备发送缓存的所述数据包;
    数据接收模块,用于接收所述网络侧设备发送的部分或全部的所述缓存的数据包。
  26. 如权利要求25所述的用户设备,其特征在于,所述第一请求消息中包含所述用户设备请求的数据缓存空间的容量。
  27. 如权利要求25或26所述的用户设备,其特征在于,所述第一请求消息还包含数据包的标识信息,用于标识所述用户设备所请求缓存的数据包。
  28. 如权利要求25所述的用户设备,其特征在于,所述第一请求消息包含业务指示,以及包含所述用户设备支持在所述网络侧设备缓存数据包的指示。
  29. 如权利要28所述的用户设备,其特征在于,所述用户设备还包括:
    消息接收模块,用于接收所述网络侧设备发送的第一响应消息,所述第一响应消息用于通知所述网络设备已分配数据缓存空间。
  30. 如权利要求28或29所述的用户设备,其特征在于,所述业务指示还包含数据包的标识信息,用于标识所述用户设备所请求缓存的数据包。
  31. 如权利要求25-30任一项所述的用户设备,其特征在于,所述第二请求消息中包含以下信息中的至少一个:
    所述用户设备所请求的数据包的大小信息;
    所述用户设备所请求的数据包的标识信息;
    所述用户设备所请求的数据包的存储位置。
  32. 如权利要求25-31任一项所述的用户设备,其特征在于,所述第二请求消息为无线资源控制RRC消息,或者超文本传输协议HTTP请求。
  33. 一种网络侧设备,其特征在于,所述网络侧设备包括无线接口、调制/解调器、存储器以及处理器,其中,存储器中存储一组程序,且处理器用于调用存储器中存储的程序,执行以下操作:
    接收用户设备发送的第一请求消息,所述第一请求消息用于请求网络侧设备分配数据缓存空间;
    将服务器设备发送给所述用户设备的数据包缓至少一部分存在所述数据缓存空间中;
    接收所述用户设备发送的第二请求消息,所述第二请求消息用于请求所述网络侧设备发送缓存的所述数据包;
    向所述用户设备发送部分或全部的所述缓存的数据包。
  34. 一种用户设备,其特征在于,所述用户设备包括无线接口、调制/解调器、存储器以及处理器,其中,存储器中存储一组程序,且处理器用于调用存储器中存储的程序,执行以下操作:
    向网络侧设备发送第一请求消息,所述第一请求消息用于向网络侧设备请求数据缓存空间;
    向服务器设备发送第三请求消息,所述第三请求消息用于请求所述服务器设备发送数据包,其中,所述网络侧设备将所述服务器设备发送数据包至少一部分缓存在所述数据缓存空间;
    向所述网络侧设备发送第二请求消息,所述第二请求消息用于请求所述网络侧设备发送缓存的所述数据包;
    接收所述网络侧设备发送的部分或全部的所述缓存的数据包。
  35. 一种通信系统,其特征在于,所述通信系统包括如权利要求17-24任一项所述的网络侧设备,如权利要求25-32任一项所述的用户设备以及服务器设备,其中:
    所述网络侧设备,用于接收用户设备发送的第一请求消息,所述第一请求消息用于请求网络侧设备分配数据缓存空间;将服务器设备发送给所述用户设备的数据包至少一部分缓存在所述数据缓存空间中;接收所述用户设备发送的第二请求消息,所述第二请求消息用于请求所述网络侧设备发送缓存的所述数据包;向所述用户设备发送部分或全部的所述缓存的数据包;
    所述用户设备,用于向网络侧设备发送第一请求消息,所述第一请求消息用于向网络侧设备请求数据缓存空间;向服务器设备发送第三请求消息,所述第三请求消息用于请求所述服务器设备发送数据包,其中,所述网络侧设备将所述服务器设备发送数据包缓至少一部分存在所述数据缓存空间;向所述网络侧设备发送第二请求消息,所述第二请求消息用于请求所述网络侧设备发送缓存的所述数据包;接收所述网络侧设备发送的部分或全部的所述缓存的数据包。
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