WO2019011086A1 - 一种预置字典同步方法及终端 - Google Patents

一种预置字典同步方法及终端 Download PDF

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Publication number
WO2019011086A1
WO2019011086A1 PCT/CN2018/090310 CN2018090310W WO2019011086A1 WO 2019011086 A1 WO2019011086 A1 WO 2019011086A1 CN 2018090310 W CN2018090310 W CN 2018090310W WO 2019011086 A1 WO2019011086 A1 WO 2019011086A1
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WIPO (PCT)
Prior art keywords
preset dictionary
preset
pdu
terminal
dictionary
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PCT/CN2018/090310
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English (en)
French (fr)
Inventor
邱禹
全海洋
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电信科学技术研究院有限公司
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Publication of WO2019011086A1 publication Critical patent/WO2019011086A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
    • 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
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • 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
    • 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

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a preset dictionary synchronization method and a terminal.
  • the network side device can configure the user equipment (UEC) to use UDC (Uplink Data Compression,
  • UDC Uplink Data Compression
  • the uplink data compression function compresses the uplink data and then transmits it to reduce the air interface resource overhead.
  • the UE may further compress the data to be transmitted by using the preset dictionary content, thereby further improving the compression efficiency; correspondingly, the base station needs to decompress according to the preset dictionary content.
  • SIP Session Initiation Protocol
  • the initial signaling cannot be well compressed. Only after transmitting several data packets can the subsequent data packets be compressed by using the fields in these data packets.
  • VoLTE Vehicle over Long Term Evolution
  • the first SIP signaling is relatively large, usually divided into 50- More than 200 segments of data are transmitted, resulting in a smaller coverage of VoLTE and a high failure rate.
  • the first SIP signaling can be compressed by using a preset dictionary.
  • the base station cannot decompress the data sent by the terminal. Therefore, in the prior art, there is a technical problem that the preset dictionary of the base station and the terminal cannot be synchronized.
  • the embodiment of the present application provides a preset dictionary synchronization method and a terminal, which are used in the prior art, and have technical problems that the preset dictionary of the base station and the terminal cannot be synchronized.
  • PDCP Packet Data Convergence Protocol
  • PDU Protocol Data Unit
  • the preset dictionary information includes an identifier of a preset dictionary or a preset dictionary, and the preset dictionary is used by the terminal to compress uplink data.
  • the PDU is a data PDU:
  • the composition of the data PDU includes a Pre field, a preset dictionary field, and a checksum field, where the Pre field is used to indicate whether the data PDU carries preset dictionary information, and the preset dictionary field is used to carry the The dictionary information is preset, and the checksum field is used to carry verification information for checking whether the preset dictionary is complete.
  • the PDU type field includes a PDU type field, a preset dictionary field, and a checksum field, where the PDU type field is used to indicate whether the preset dictionary information carried in the preset dictionary field is a preset dictionary or a preset.
  • An identifier of the dictionary, the preset dictionary field is used to carry the preset dictionary information, and the checksum field is used to carry verification information that checks whether the preset dictionary is complete.
  • the checksum field carries the check information, so that the base station uses the school when receiving the PDU.
  • the verification information verifies the integrity of the preset dictionary.
  • the preset dictionary information specifically includes an identifier of the preset dictionary.
  • the packet data convergence protocol PDCP sends the protocol data unit PDU to the base station, Also includes:
  • the configuration information includes, after receiving the PDU, the base station determines, from the plurality of identifiers, an identifier corresponding to the preset dictionary used for data compression by the terminal.
  • an embodiment of the present application provides a terminal, including:
  • a sending unit configured to send, by using a packet data convergence protocol PDCP, a protocol data unit PDU carrying preset dictionary information to the base station, to complete synchronization with a preset dictionary of the base station;
  • the preset dictionary information includes an identifier of a preset dictionary or a preset dictionary, and the preset dictionary is used by the terminal to compress uplink data.
  • the PDU is a data PDU:
  • the composition of the data PDU includes a Pre field, a preset dictionary field, and a checksum field, where the Pre field is used to indicate whether the data PDU carries preset dictionary information, and the preset dictionary field is used to carry the The dictionary information is preset, and the checksum field is used to carry verification information for checking whether the preset dictionary is complete.
  • the PDU type field includes a PDU type field, a preset dictionary field, and a checksum field, where the PDU type field is used to indicate whether the preset dictionary information carried in the preset dictionary field is a preset dictionary or a preset.
  • An identifier of the dictionary, the preset dictionary field is used to carry the preset dictionary information, and the checksum field is used to carry verification information that checks whether the preset dictionary is complete.
  • the checksum field carries the check information, so that the base station uses the school when receiving the PDU.
  • the verification information verifies the integrity of the preset dictionary.
  • the preset dictionary information specifically includes an identifier of the preset dictionary.
  • the method further includes:
  • a receiving unit configured to receive preset dictionary configuration information sent by the base station, and complete synchronization with a preset dictionary of the base station;
  • the configuration information includes, after receiving the PDU, the base station determines, from the plurality of identifiers, an identifier corresponding to a preset dictionary used for data compression by the terminal.
  • the embodiment of the present application further provides a terminal, where the device mainly includes a processor and a memory, wherein the memory stores a preset program, and the processor reads the program in the memory, and executes the following process according to the program:
  • the preset dictionary information includes an identifier of a preset dictionary or a preset dictionary, and the preset dictionary is used by the terminal to compress uplink data.
  • the PDU is a data PDU:
  • the composition of the data PDU includes a Pre field, a preset dictionary field, and a checksum field, where the Pre field is used to indicate whether the data PDU carries preset dictionary information, and the preset dictionary field is used to carry the The dictionary information is preset, and the checksum field is used to carry verification information for checking whether the preset dictionary is complete.
  • the PDU type field includes a PDU type field, a preset dictionary field, and a checksum field, where the PDU type field is used to indicate whether the preset dictionary information carried in the preset dictionary field is a preset dictionary or a preset.
  • An identifier of the dictionary, the preset dictionary field is used to carry the preset dictionary information, and the checksum field is used to carry verification information that checks whether the preset dictionary is complete.
  • the checksum field carries the check information, so that the base station uses the school when receiving the PDU.
  • the verification information verifies the integrity of the preset dictionary.
  • the preset dictionary information specifically includes an identifier of the preset dictionary.
  • the packet data convergence protocol PDCP sends the protocol data unit PDU to the base station, Also includes:
  • the configuration information includes, after receiving the PDU, the base station determines, from the plurality of identifiers, an identifier corresponding to a preset dictionary used for data compression by the terminal.
  • the embodiment of the present application further provides a preset dictionary synchronization method, which is applied to a base station, and includes:
  • the protocol data unit PDU carrying the preset dictionary information sent by the packet data convergence protocol PDCP, and completing synchronization with the preset dictionary of the terminal;
  • the preset dictionary information includes an identifier of a preset dictionary or a preset dictionary, and the preset dictionary is used by the terminal to compress uplink data.
  • the preset dictionary information specifically includes an identifier of the preset dictionary.
  • the method further includes:
  • the configuration information includes, after receiving the PDU, determining, from the plurality of identifiers, an identifier corresponding to the preset dictionary used for data compression by the terminal.
  • the embodiment of the present application further provides a base station, including:
  • a receiving unit configured to receive a protocol data unit PDU that carries the preset dictionary information sent by the terminal through the packet data convergence protocol PDCP, and complete synchronization with the preset dictionary of the terminal;
  • the preset dictionary information includes an identifier of a preset dictionary or a preset dictionary, and the preset dictionary is used by the terminal to compress uplink data.
  • the preset dictionary information specifically includes an identifier of the preset dictionary.
  • the method further includes:
  • a sending unit configured to send preset dictionary configuration information to the terminal, to complete synchronization with a preset dictionary of the terminal
  • the configuration information includes, after receiving the PDU, determining, from the plurality of identifiers, an identifier corresponding to the preset dictionary used for data compression by the terminal.
  • the embodiment of the present application further provides a preset dictionary synchronization device, including:
  • a processor for reading a program in the memory, and executing the following process according to the program:
  • the protocol data unit PDU carrying the preset dictionary information sent by the packet data convergence protocol PDCP, and completing synchronization with the preset dictionary of the terminal;
  • the preset dictionary information includes an identifier of a preset dictionary or a preset dictionary, and the preset dictionary is used by the terminal to compress uplink data.
  • the terminal sends a protocol data unit PDU carrying the preset dictionary information to the base station by using the packet data convergence protocol PDCP, and completes synchronization with the preset dictionary of the base station, where the
  • the preset dictionary information includes an identifier of a preset dictionary or a preset dictionary, and the preset dictionary is used by the terminal to compress uplink data, that is, the terminal sends a preset dictionary including a preset dictionary or a preset dictionary identifier through the PDU.
  • the information is sent to the base station to complete the synchronization between the terminal and the preset dictionary of the base station, so that the terminal can use the synchronized dictionary for data compression, and the base station can use the synchronized dictionary for decompression, thereby effectively solving the prior art.
  • the preset dictionary of the base station and the terminal cannot be synchronized.
  • FIG. 1 is a schematic diagram of a format of a data PDU in a preset dictionary synchronization method according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of another format of a data PDU in a preset dictionary synchronization method according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of a format of a control PDU according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a terminal according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another terminal according to an embodiment of the present application.
  • the preset dictionary synchronization process is as follows:
  • the preset dictionary information includes an identifier of a preset dictionary or a preset dictionary, and the preset dictionary is used by the terminal to compress uplink data.
  • the terminal may compress the uplink data that needs to be sent to the base station by using a preset dictionary to save the amount of data transmitted by the air interface and the uplink resource.
  • the terminal needs to implement preset dictionary synchronization with the base station, so that the base station is in the base station.
  • the terminal When receiving the uplink compressed data sent by the terminal, it can be decompressed through a preset dictionary.
  • the terminal when the terminal needs to synchronize with the base station preset dictionary, the terminal sends a protocol data unit PDU to the base station through the packet data convergence protocol PDCP, where the PDU carries preset dictionary information, and the preset dictionary information may include
  • the preset dictionary for uplink data compression may also include an identification of a preset dictionary for uplink data compression.
  • the terminal may use the PDCP data PDU to carry the preset dictionary information, and may also use the PDCP control PDU to carry the preset dictionary information.
  • the terminal when the terminal uses the PDCP data PDU to carry the preset dictionary information, the terminal sends a data PDU to the base station, where the data PDU carries preset dictionary information that the terminal will use for uplink data compression, please refer to FIG. 1 , FIG. 1 .
  • the D/C field of the data PDU shown in FIG. 1 is used to indicate whether the PDU is a data PDU or a control PDU.
  • the D/C domain is used.
  • a value of 0 indicates that the PDU is a control PDU
  • a D/C field value of 1 indicates that the PDU is a data PDU.
  • the instruction information bit Pre field, the preset dictionary field, and the checksum field are added to the composition of the data PDU.
  • the preset dictionary field is the Oct4 line to the Oct N line in FIG. 1, and the value of N is determined according to actual needs.
  • the Pre field is used to indicate whether the data PDU sent by the terminal to the base station carries preset dictionary information, and the preset dictionary field is used.
  • the checksum field is used to carry the check information for checking whether the preset dictionary is complete.
  • the terminal can set the size of the data PDU according to actual needs, such as 12 bits, 20 bits, etc.
  • the size of the data PDU is 12 bits, for example, the Pre field in the data PDU can occupy 1 bit.
  • the base station receives the data PDU sent by the terminal, it first confirms that the data PDU is received by the value of the D/C field, and then reads the Pre field in the data PDU header to know whether the data PDU is carried. There is preset dictionary information.
  • the Pre field of the data PDU in FIG. 1 is 1, indicating that the data PDU carries preset dictionary information. If the data PDU preset dictionary field carries a preset dictionary, the base station uses the checksum of the data PDU. Checking information in the domain to verify the integrity of the preset dictionary carried in the preset dictionary field of the data PDU, if the data PDU preset dictionary field carries the identifier of the preset dictionary (that is, the preamble sent by the terminal to the base station) The dictionary information includes the identifier of the preset dictionary, and the checksum field does not need to carry the check information.
  • the base station learns from the preset dictionary domain.
  • the Pre field of the data PDU may also be 0.
  • the format of the data PDU may be as shown in FIG. 2, indicating that the data PDU sent by the terminal does not carry the preset dictionary.
  • the base station when the preset dictionary field of the data PDU shown in FIG. 1 carries a preset dictionary, after receiving the data PDU, the base station first uses the check information in the checksum field to verify the preset dictionary. Integrity, when the verification is successful, that is, the preset dictionary carried by the data PDU is complete, then the terminal completes the synchronization with the preset dictionary of the base station, and then the base station uses the preset in the subsequent receiving terminal. After the upstream data of the uplink data compression is performed in the dictionary, the preset dictionary can be used for decompression. Of course, in an actual application, the base station may also send a confirmation synchronization message to the terminal to determine that the preset dictionary is received. There are no restrictions.
  • the base station before the terminal sends the preset dictionary information to the base station, the base station can obtain multiple dictionaries through the core network, and save the dictionaries.
  • the data PDU sent by the terminal carries the preset dictionary information and may include only presets.
  • the identifier of the dictionary after receiving the data PDU sent by the terminal, the base station determines the identifier of the preset dictionary, and the dictionary saved by the base station side corresponding to the identifier is a preset dictionary to be used by the terminal in the uplink data compression.
  • the terminal completes the synchronization with the preset dictionary of the base station.
  • the base station after receiving the uplink data sent by the terminal and using the preset dictionary for uplink data compression, the base station can use the preset dictionary to solve the problem. compression.
  • the base station may further indicate to the terminal which one or which identifiers are specifically used in the uplink data compression.
  • the preset dictionary performs uplink data compression, and the terminal can also perform the steps:
  • Step A receiving preset dictionary configuration information sent by the base station, and completing synchronization with a preset dictionary of the base station;
  • the configuration information includes, after receiving the PDU, the base station determines, from the plurality of identifiers, an identifier corresponding to a preset dictionary used for data compression by the terminal.
  • the base station receives the data PDU sent by the terminal, where the data PDU carries preset information including multiple and different preset dictionary identifiers, and the base station can configure the terminal to use one or more of the preset dictionary identifiers.
  • the preset dictionary corresponding to the identifier is used to perform the compression of the uplink data.
  • the preset dictionary information includes the identifier 1 corresponding to the preset dictionary 1, the identifier 2 corresponding to the preset dictionary 2, and the identifier 3 corresponding to the preset dictionary 3 and The identifier 4 corresponding to the preset dictionary 4, if the base station configures the preset dictionary corresponding to the identifier 2 and the identifier 3 to perform uplink data compression, the base station sends a preset to the terminal indicating that the terminal uses the identifier 2 pair.
  • the preset dictionary 3 corresponding to the dictionary 3 and the identifier 3 corresponding to the identifier 3 is used to perform the preset dictionary configuration information for compressing the uplink data.
  • the terminal receives the preset dictionary configuration information, and can determine the configuration information from the preset dictionary.
  • the preset dictionary 2 and the preset dictionary 3 configured by the base station to the terminal, then the terminal can use the preset dictionary 2 and the preset dictionary 3 for uplink data compression, and then, the terminal ends. Complete sync with the preset dictionary base station.
  • the terminal when the terminal uses the PDCP control PDU to carry the preset dictionary information, the terminal sends a control PDU to the base station, where the control PDU carries preset dictionary information that the terminal will use for uplink data compression, please refer to FIG. 3, FIG.
  • the D/C field of the control PDU shown in FIG. 3 is used to indicate whether the PDU is a data PDU or a control PDU.
  • the D/C domain is used. A value of 0 indicates that the PDU is a control PDU, and a D/C field value of 1 indicates that the PDU is a data PDU.
  • the preset dictionary field is the Oct2 line in Figure 3 (including the Oct2 line) and the number of lines after the Oct2 line.
  • the preset dictionary field is used to carry the preset dictionary information
  • the checksum field is used to carry the check whether the preset dictionary is complete. The information is verified, and the PDU type field of the control PDU is used to indicate whether the preset dictionary information carried in the preset dictionary field is a preset dictionary or an identifier of a preset dictionary.
  • the base station receives the control PDU sent by the terminal, first confirms that the control PDU is received by the value of the D/C field, and then reads the control PDU preset dictionary field by reading the PDU type field of the control PDU. Whether the preset dictionary information carried in the preset dictionary is an identifier of a preset dictionary.
  • the value of the PDU type field of the control PDU is 101, that is, the preset dictionary field carries the preset dictionary.
  • the checksum field of the control PDU also carries the check information, after the base station confirms that the PDU is the control PDU.
  • the value of the PDU type field is 101 to confirm that the control PDU preset dictionary field carries the preset dictionary, and then the check information in the checksum field is used to check whether the carried preset dictionary is complete. If complete, the terminal The preset dictionary synchronization with the base station is completed; if not complete, the base station may also use the control PDU to send the preset dictionary configured by the base station side to the terminal to the terminal, and will not be discussed too much herein.
  • the base station confirms that the PDU is the control PDU, it confirms that Controlling the identifier of the preset dictionary carried in the PDU preset dictionary field, and then finding a dictionary corresponding to the identifier from the saved dictionary, the dictionary is a preset dictionary that the terminal needs to use in the uplink data, and at this time, the terminal After the synchronization of the preset dictionary with the base station is completed, the base station can use the preset dictionary to perform decompression when subsequently receiving the uplink data compressed by the terminal using the preset dictionary.
  • the base station may further indicate to the terminal which one or which ones the terminal specifically uses in the uplink data compression.
  • the corresponding preset dictionary is identified, and the terminal can also perform step A above.
  • the base station receives the terminal to send a control PDU, where the control PDU includes preset information of multiple and different preset dictionary identifiers, and the base station may configure the terminal to use one or more identifiers of the preset dictionary identifiers.
  • the corresponding preset dictionary is used to perform the compression of the uplink data. It is assumed that the preset dictionary information sent by the terminal to the base station includes the identifier 1 corresponding to the preset dictionary 1, and the identifier 2 corresponding to the preset dictionary 2, if the base station configures the terminal to use the terminal.
  • the preset dictionary corresponding to the identifier 1 is used to compress the uplink data.
  • the base station sends the preset dictionary configuration information indicating that the terminal uses the preset dictionary 1 of the identifier 1 to perform uplink data compression, and then the terminal will After receiving the preset dictionary configuration information, the preset dictionary 1 configured by the base station to the terminal can be determined from the preset dictionary configuration information, thereby completing the synchronization with the preset dictionary of the base station, and then the terminal can use the pre-reader
  • the dictionary 1 is used for uplink data compression, and after receiving the uplink data, the base station can use the preset dictionary for decompression.
  • the terminal may send the preset dictionary information including the preset dictionary or the preset dictionary identifier to the base station by using the data PDU or the control PDU, thereby completing synchronization between the terminal and the preset dictionary of the base station, so that the terminal can use the synchronization.
  • the latter dictionary performs data compression, and the base station can use the synchronized dictionary for decompression. Therefore, the technical problem that the preset dictionary of the base station and the terminal cannot be synchronized is effectively solved in the prior art.
  • the terminal mainly includes :
  • the sending unit 10 is configured to send, by using the packet data convergence protocol PDCP, a protocol data unit PDU carrying the preset dictionary information to the base station, to complete synchronization with the preset dictionary of the base station;
  • the preset dictionary information includes an identifier of a preset dictionary or a preset dictionary, and the preset dictionary is used by the terminal to compress uplink data.
  • the PDU is a data PDU:
  • the composition of the data PDU includes a Pre field, a preset dictionary field, and a checksum field, where the Pre field is used to indicate whether the data PDU carries preset dictionary information, and the preset dictionary field is used to carry the The dictionary information is preset, and the checksum field is used to carry verification information for checking whether the preset dictionary is complete.
  • the PDU type field includes a PDU type field, a preset dictionary field, and a checksum field, where the PDU type field is used to indicate whether the preset dictionary information carried in the preset dictionary field is a preset dictionary or a preset.
  • An identifier of the dictionary, the preset dictionary field is used to carry the preset dictionary information, and the checksum field is used to carry verification information that checks whether the preset dictionary is complete.
  • the checksum field carries the check information, so that the base station uses the school when receiving the PDU.
  • the verification information verifies the integrity of the preset dictionary.
  • the preset dictionary information specifically includes an identifier of the preset dictionary.
  • the method further includes:
  • the receiving unit 11 is configured to receive preset dictionary configuration information sent by the base station, and complete synchronization with a preset dictionary of the base station;
  • the configuration information includes, after receiving the PDU, the base station determines, from the plurality of identifiers, an identifier corresponding to a preset dictionary used for data compression by the terminal.
  • the embodiment of the present application provides a device, and the device is applied to the terminal side.
  • the device mainly includes a processor 21 and a memory 22, wherein the memory 22 stores a preset program, and the processor 21 reads the program in the memory 22, and executes the following process according to the program:
  • the preset dictionary information includes an identifier of a preset dictionary or a preset dictionary, and the preset dictionary is used by the terminal to compress uplink data.
  • the PDU is a data PDU:
  • the composition of the data PDU includes a Pre field, a preset dictionary field, and a checksum field, where the Pre field is used to indicate whether the data PDU carries preset dictionary information, and the preset dictionary field is used to carry the The dictionary information is preset, and the checksum field is used to carry verification information for checking whether the preset dictionary is complete.
  • the PDU type field includes a PDU type field, a preset dictionary field, and a checksum field, where the PDU type field is used to indicate whether the preset dictionary information carried in the preset dictionary field is a preset dictionary or a preset.
  • An identifier of the dictionary, the preset dictionary field is used to carry the preset dictionary information, and the checksum field is used to carry verification information that checks whether the preset dictionary is complete.
  • the checksum field carries the check information, so that the base station uses the school when receiving the PDU.
  • the verification information verifies the integrity of the preset dictionary.
  • the preset dictionary information specifically includes an identifier of the preset dictionary.
  • the packet data convergence protocol PDCP sends the protocol data unit PDU to the base station, Also includes:
  • the configuration information includes, after receiving the PDU, the base station determines, from the plurality of identifiers, an identifier corresponding to a preset dictionary used for data compression by the terminal.
  • the transceiver implements the transmitting and receiving processes, that is, the transceiver receives and transmits data under the control of the processor 21.
  • the memory 22 may include read only memory (ROM) and random access memory (RAM), and provides the processor 21 with program instructions and data stored in the memory 22.
  • ROM read only memory
  • RAM random access memory
  • the memory 22 may be used to store a program of any of the methods provided by the embodiments of the present application.
  • the processor 21 is configured to execute any of the methods provided by the embodiments of the present application in accordance with the obtained program instructions by calling the program instructions stored in the memory 22.
  • a preset dictionary synchronization method is provided in the embodiment of the present application, which is applied to a base station side, and the working principle of the preset dictionary synchronization method is similar to the foregoing preset dictionary synchronization method applied to the terminal side. Therefore, the specific implementation of the preset dictionary synchronization method can be referred to the preset dictionary synchronization method applied to the terminal side, and the repeated description is not repeated.
  • the preset dictionary synchronization method provided in the embodiment of the present application is applied to the base station side, and includes:
  • the protocol data unit PDU carrying the preset dictionary information sent by the packet data convergence protocol PDCP, and completing synchronization with the preset dictionary of the terminal;
  • the preset dictionary information includes an identifier of a preset dictionary or a preset dictionary, and the preset dictionary is used by the terminal to compress uplink data.
  • the preset dictionary information specifically includes an identifier of the preset dictionary.
  • the method further includes:
  • the configuration information includes, after receiving the PDU, determining, from the plurality of identifiers, an identifier corresponding to the preset dictionary used for data compression by the terminal.
  • a base station is provided in the embodiment of the present application.
  • the base station includes:
  • a receiving unit configured to receive a protocol data unit PDU that carries the preset dictionary information sent by the terminal through the packet data convergence protocol PDCP, and complete synchronization with the preset dictionary of the terminal;
  • the preset dictionary information includes an identifier of a preset dictionary or a preset dictionary, and the preset dictionary is used by the terminal to compress uplink data.
  • the preset dictionary information specifically includes an identifier of the preset dictionary.
  • the method further includes:
  • a sending unit configured to send preset dictionary configuration information to the terminal, to complete synchronization with a preset dictionary of the terminal
  • the configuration information includes, after receiving the PDU, determining, from the plurality of identifiers, an identifier corresponding to the preset dictionary used for data compression by the terminal.
  • the embodiment of the present application provides a preset dictionary synchronization device, which is applied to the base station side.
  • the preset dictionary synchronization refer to the description of the method embodiment, and the repetition is no longer Description; the device includes:
  • a processor for reading a program in the memory, and executing the following process according to the program:
  • the protocol data unit PDU carrying the preset dictionary information sent by the packet data convergence protocol PDCP, and completing synchronization with the preset dictionary of the terminal;
  • the preset dictionary information includes an identifier of a preset dictionary or a preset dictionary, and the preset dictionary is used by the terminal to compress uplink data.
  • the device further includes: a transceiver; a transceiver, configured to receive and send data under the control of the processor; therefore, the protocol data unit PDU carried by the terminal and carrying the preset dictionary information may be received by the transceiver.
  • the memory can include read only memory (ROM) and random access memory (RAM) and provides the processor with program instructions and data stored in the memory.
  • ROM read only memory
  • RAM random access memory
  • the memory may be used to store a program of any of the methods provided by the embodiments of the present application.
  • the processor is configured to execute any of the methods provided by the embodiments of the present application in accordance with the obtained program instructions by calling a program instruction stored in the memory.
  • the terminal device may also be referred to as a user equipment (User Equipment, referred to as "UE"), a mobile station (Mobile Station, referred to as "MS”), a mobile terminal (Mobile Terminal), etc.
  • UE User Equipment
  • MS Mobile Station
  • Mobile Terminal Mobile Terminal
  • the terminal may The ability to communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal can be a mobile phone (or “cellular” phone), or a computer with mobile nature, etc.
  • RAN Radio Access Network
  • the terminal can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile device.
  • a base station which may be referred to as a network device (e.g., an access point device), refers to a device in the access network that communicates with the wireless terminal over one or more sectors over the air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B) is not limited in the embodiment of the present invention.
  • BTS Base Transceiver Station
  • NodeB base station
  • NodeB evolved base station in LTE
  • LTE NodeB or eNB or e-NodeB, evolutional Node B
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本申请公开了一种预置字典同步方法及终端，所述方法包括通过分组数据汇聚协议PDCP向基站发送携带有预置字典信息的协议数据单元PDU，完成与所述基站的预置字典同步，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。所以，有效的解决了现有技术中，存在基站与终端的预置字典无法同步的技术问题。

Description

一种预置字典同步方法及终端
本申请要求在2017年7月11日提交中国专利局、申请号为201710560377.6、发明名称为“一种预置字典同步方法及终端”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种预置字典同步方法及终端。
背景技术
在LTE/LTE-A(Long Term Evolution/Long Term Evolution Advanced，长期演进技术/长期演进技术的后续演进)系统中，网络侧设备可以配置UE(User Equipment，用户设备)使用UDC(Uplink Data Compression，上行数据压缩)功能，对上行数据进行压缩后再传输，以降低空口资源开销。
在进行上行数据压缩时，UE还可以利用预置字典内容对待传数据进行压缩，从而进一步提升压缩效率；相应的，基站则需要根据预置字典内容进行解压缩。特别是针对SIP(Session Initiation Protocol，会话初始协议)信令，初始的信令不能很好地压缩，只有传输了几条数据包之后才能利用这些数据包中的字段对后续数据包做压缩。而实际网络中VoLTE(Voice over Long Term Evolution，长期演进技术中基于IMS(IP Multimedia Subsystem，IP多媒体子系统)的语音业务)的过程中，第一条SIP信令比较大，通常要分成50-200多段数据包进行发送，导致VoLTE的覆盖变小，失败率很高。为此，可以采用预置字典的方式对第一条SIP信令进行压缩。
由于压缩端和解压端所使用的预置字典不一致，导致基站无法对终端发送的数据进行解压缩，所以，现有技术中，存在基站与终端的预置字典无法同步的技术问题。
发明内容
本申请实施例提供一种预置字典同步方法及终端，用于现有技术中，存在基站与终端的预置字典无法同步的技术问题。
本申请实施例提供的具体技术方案如下：
通过分组数据汇聚协议(Packet Data Convergence Protocol,PDCP)向基站发送携带有预置字典信息的协议数据单元(Protocol Data Unit,PDU)，完成与所述基站的预置字典同步；
其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
可选地，所述PDU为数据PDU时：
所述数据PDU的组成结构中包括Pre域，预置字典域以及checksum域，所述Pre域用于指示所述数据PDU中是否携带预置字典信息，所述预置字典域用于携带所述预置字典信息，所述checksum域用于携带检验所述预置字典是否完整的校验信息。
可选地，所述PDU为控制PDU时：
所述控制PDU的组成结构中包括PDU type域，预置字典域以及checksum域，所述PDU type域用于指示所述预置字典域中携带的预置字典信息为预置字典还是为预置字典的标识，所述预置字典域用于携带所述预置字典信息，所述checksum域用于携带检验所述预置字典是否完整的校验信息。
可选地，所述预置字典信息具体包括所述预置字典和校验信息时，所述checksum域携带有所述校验信息，以便所述基站在接收到所述PDU时利用所述校验信息检验所述预置字典的完整性。
可选地，所述预置字典信息具体包括所述预置字典的标识，当所述标识为多个且各不相同时，所述通过分组数据汇聚协议PDCP向基站发送协议数据单元PDU之后，还包括：
接收所述基站发送的预置字典配置信息，完成与所述基站的预置字典同步；
其中，所述配置信息包括所述基站在接收到所述PDU后，从多个标识中 确定出用于所述终端进行数据压缩的预置字典对应的标识。
第二方面，本申请实施例提供了一种终端，包括：
发送单元，用于通过分组数据汇聚协议PDCP向基站发送携带有预置字典信息的协议数据单元PDU，完成与所述基站的预置字典同步；
其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
可选地，所述PDU为数据PDU时：
所述数据PDU的组成结构中包括Pre域，预置字典域以及checksum域，所述Pre域用于指示所述数据PDU中是否携带预置字典信息，所述预置字典域用于携带所述预置字典信息，所述checksum域用于携带检验所述预置字典是否完整的校验信息。
可选地，所述PDU为控制PDU时：
所述控制PDU的组成结构中包括PDU type域，预置字典域以及checksum域，所述PDU type域用于指示所述预置字典域中携带的预置字典信息为预置字典还是为预置字典的标识，所述预置字典域用于携带所述预置字典信息，所述checksum域用于携带检验所述预置字典是否完整的校验信息。
可选地，所述预置字典信息具体包括所述预置字典和校验信息时，所述checksum域携带有所述校验信息，以便所述基站在接收到所述PDU时利用所述校验信息检验所述预置字典的完整性。
可选地，所述预置字典信息具体包括所述预置字典的标识，当所述标识为多个且各不相同时，还包括：
接收单元，用于接收所述基站发送的预置字典配置信息，完成与所述基站的预置字典同步；
其中，所述配置信息包括所述基站在接收到所述PDU后，从多个标识中确定出用于所述终端进行数据压缩的预置字典对应的标识。
再一方面，本申请实施例还提供一种终端，该设备主要包括处理器和存储器，其中，存储器中保存有预设的程序，处理器读取存储器中的程序，按 照该程序执行以下过程：
通过分组数据汇聚协议PDCP向基站发送携带有预置字典信息的协议数据单元PDU，完成与所述基站的预置字典同步；
其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
可选地，所述PDU为数据PDU时：
所述数据PDU的组成结构中包括Pre域，预置字典域以及checksum域，所述Pre域用于指示所述数据PDU中是否携带预置字典信息，所述预置字典域用于携带所述预置字典信息，所述checksum域用于携带检验所述预置字典是否完整的校验信息。
可选地，所述PDU为控制PDU时：
所述控制PDU的组成结构中包括PDU type域，预置字典域以及checksum域，所述PDU type域用于指示所述预置字典域中携带的预置字典信息为预置字典还是为预置字典的标识，所述预置字典域用于携带所述预置字典信息，所述checksum域用于携带检验所述预置字典是否完整的校验信息。
可选地，所述预置字典信息具体包括所述预置字典和校验信息时，所述checksum域携带有所述校验信息，以便所述基站在接收到所述PDU时利用所述校验信息检验所述预置字典的完整性。
可选地，所述预置字典信息具体包括所述预置字典的标识，当所述标识为多个且各不相同时，所述通过分组数据汇聚协议PDCP向基站发送协议数据单元PDU之后，还包括：
接收所述基站发送的预置字典配置信息，完成与所述基站的预置字典同步；
其中，所述配置信息包括所述基站在接收到所述PDU后，从多个标识中确定出用于所述终端进行数据压缩的预置字典对应的标识。
第四方面，本申请实施例还提供一种预置字典同步方法，应用于基站，包括：
接收终端通过分组数据汇聚协议PDCP发送的携带有预置字典信息的协议数据单元PDU，完成与所述终端的预置字典同步；
其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
可选地，所述预置字典信息具体包括所述预置字典的标识，当所述标识为多个且各不相同时，还包括：
向所述终端发送预置字典配置信息，完成与所述终端的预置字典同步；
其中，所述配置信息包括在接收到所述PDU后，从多个标识中确定出用于所述终端进行数据压缩的预置字典对应的标识。
第五方面，本申请实施例还提供一种基站，包括：
接收单元，用于接收终端通过分组数据汇聚协议PDCP发送的携带有预置字典信息的协议数据单元PDU，完成与所述终端的预置字典同步；
其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
可选地，所述预置字典信息具体包括所述预置字典的标识，当所述标识为多个且各不相同时，还包括：
发送单元，用于向所述终端发送预置字典配置信息，完成与所述终端的预置字典同步；
其中，所述配置信息包括在接收到所述PDU后，从多个标识中确定出用于所述终端进行数据压缩的预置字典对应的标识。
第六方面，本申请实施例还提供一种预置字典同步装置，包括：
存储器，用于保存预设的程序；
处理器，用于读取所述存储器中的程序，按照该程序执行以下过程：
接收终端通过分组数据汇聚协议PDCP发送的携带有预置字典信息的协议数据单元PDU，完成与所述终端的预置字典同步；
其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
基于上述技术方案，本申请实施例中，采用了终端通过分组数据汇聚协议PDCP向基站发送携带有预置字典信息的协议数据单元PDU，完成与所述基站的预置字典同步，其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据的技术，也即终端通过PDU发送包括预置字典或预置字典标识的预置字典信息给基站，进而完成终端与基站的预置字典的同步，使得该终端能够使用同步后的字典进行数据压缩，基站能够使用该同步后的字典进行解压缩，所以，有效的解决了现有技术中，存在基站与终端的预置字典无法同步的技术问题。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例描述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申请的一些实施例。
图1为本申请实施例提供的预置字典同步方法中一种数据PDU的格式的示意图；
图2为本申请实施例提供的预置字典同步方法中另一种数据PDU的格式的示意图；
图3为本申请实施例提供的一种控制PDU的格式的示意图；
图4为本申请实施例提供的一种终端的示意图；
图5为本申请实施例提供的另一种终端的示意图。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请技术方案的一部分实施例，而不是全部的实施例。基于本申请文件中记载的实施例，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，都属于本申请技术方案保护的范围。
本申请实施例中，预置字典同步过程如下：
通过分组数据汇聚协议PDCP向基站发送携带有预置字典信息的协议数据单元PDU，完成与所述基站的预置字典同步；
其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
在实际应用中，终端可以通过预置字典将需要发送给基站的上行数据进行压缩，以节省空口传输的数据量以及上行资源，这时，终端就需要与基站实现预置字典同步，以便基站在收到终端发送的上行压缩数据时，能够通过预置字典进行解压缩。
在具体实践过程中，终端在需要与基站预置字典同步时，终端就会通过分组数据汇聚协议PDCP向基站发送协议数据单元PDU，该PDU携带有预置字典信息，预置字典信息中可以包括用于上行数据压缩的预置字典，也可以包括用于上行数据压缩的预置字典的标识。
在实际应用中，由于PDCP数据单元PDU分为数据PDU和控制PDU，那么，终端可以使用PDCP数据PDU来携带预置字典信息，也可以使用PDCP控制PDU来携带预置字典信息。
具体地，当终端使用PDCP数据PDU来携带预置字典信息时，终端就会向基站发送数据PDU，该数据PDU携带终端将用于上行数据压缩的预置字典信息，请参考图1，图1为本实施例中定义的一种数据PDU的格式，图1中所示的数据PDU的D/C域用来表示该PDU是数据PDU还是控制PDU，在本实施例中，以D/C域值为0时表示PDU为控制PDU，D/C域值为1时表示PDU为数据PDU，同时，数据PDU的组成结构中增加了指示信息比特Pre域，预置字典域以及checksum域，其中，预置字典域为图1中Oct4行至Oct N行，N的取值根据实际需要确定，Pre域用来指示终端向基站发送的数据PDU中是否携带有预置字典信息，预置字典域用来携带终端将要向基站发送的预置字典信息，checksum域用于携带检验预置字典是否完整的校验信息。
在实际应用中，终端可以根据实际需要设置数据PDU的大小，如12bit， 20bit等，在本实施例中，具体以数据PDU的大小为12bit为例，那么，数据PDU中的Pre域可以占用1bit，当Pre域这1bit的值为0时，可以认为该数据PDU中没有携带预置字典信息，当Pre域这1bit的值为1时，可以认为该数据PDU中携带有预置字典信息。那么，当基站接收到终端发送的数据PDU时，首先通过D/C域的值为1确认接收到的是数据PDU，然后通过读取数据PDU包头中的Pre域，得知该数据PDU是否携带有预置字典信息。
这里假设图1中的数据PDU的Pre域为1，表示该数据PDU携带了预置字典信息，若数据PDU预置字典域中携带的是预置字典，那么，基站就会使用数据PDU的checksum域中的校验信息来验证数据PDU的预置字典域中携带的预置字典的完整性，若数据PDU预置字典域中携带的是预置字典的标识(也即终端向基站发送的预置字典信息包括的是预置字典的标识)，checksum域中就可以不用携带校验信息，此时，基站在通过Pre域得知数据PDU携带了预置字典信息后，从预置字典域中读出预置字典域中携带的预置字典标识即可。当然，在实际应用中，数据PDU的Pre域也可能为0，这时数据PDU的格式可以如图2所示，表示终端发送的数据PDU没有携带预置字典。
具体地，当图1中所示的数据PDU的预置字典域携带的是预置字典时，基站在收到该数据PDU后，就会先利用checksum域中的校验信息来验证预置字典的完整性，当验证成功也即数据PDU携带的预置字典是完整的，这时，终端就完成了与基站的预置字典的同步，那么，基站在后续收到终端发送的利用该预置字典进行上行数据压缩后的上行数据后，就可以利用该预置字典进行解压缩，当然，在实际应用中，基站还可以会向终端发送确定收到该预置字典的确认同步消息，在此就不做过多限制。
在实际应用中，终端在向基站发送预置字典信息之前，基站可以通过核心网络获得多个字典，并保存这些字典，这时，终端发送的数据PDU携带预置字典信息中可以只包括预置字典的标识，那么，基站在收到终端发送的该数据PDU后，确定出预置字典的标识，该标识对应的基站侧保存的字典即为终端将要在上行数据压缩中使用的预置字典，这时，终端就完成了与基站的 预置字典的同步，那么，基站在后续收到终端发送的利用该预置字典进行上行数据压缩后的上行数据后，就可以利用该预置字典进行解压缩。
在实际应用中，若数据PDU预置字典域携带的预置字典的标识为多个且各不相同时，基站还可以向终端指示在上行数据压缩中具体使用哪一个或哪几个标识对应的预置字典进行上行数据压缩，这时终端还可以执行步骤：
步骤A:接收所述基站发送的预置字典配置信息，完成与所述基站的预置字典同步；
其中，所述配置信息包括所述基站在接收到所述PDU后，从多个标识中确定出用于所述终端进行数据压缩的预置字典对应的标识。
也即在基站接收到终端发送的数据PDU，该数据PDU携带有包括多个且各不相同的预置字典标识的预置信息，基站可以向终端配置使用这些预置字典标识中的一个或多个标识对应的预置字典来进行上行数据的压缩，这里假设，预置字典信息中包括预置字典1对应的标识1，预置字典2对应的标识2，预置字典3对应的标识3以及预置字典4对应的标识4，若基站向终端配置使用标识2和标识3对应的预置字典来进行上行数据的压缩，这时，基站就会向终端发送指示终端使用标识2对的预置字典2和标识3对应的预置字典3来进行上行数据的压缩的预置字典配置信息，那么，终端就会接收到这个预置字典配置信息，就可以从这个预置字典配置信息中确定出基站给终端配置的预置字典2和预置字典3，那么，终端后续就可以使用预置字典2和预置字典3进行上行数据压缩，这时，终端就完成与基站的预置字典同步。
具体地，当终端使用PDCP控制PDU来携带预置字典信息时，终端就会向基站发送控制PDU，该控制PDU携带终端将用于上行数据压缩的预置字典信息，请参考图3，图3为本实施例中定义的一种控制PDU的格式，图3中所示的控制PDU的D/C域用来表示该PDU是数据PDU还是控制PDU，在本实施例中，以D/C域值为0时表示PDU为控制PDU，D/C域值为1时表示PDU为数据PDU，同时，在用于携带预置字典信息的控制PDU组成结构中增加了预置字典域以及checksum域，预置字典域为图3中Oct2行(包括Oct2 行在内)以及Oct2行之后的行数，预置字典域用来携带预置字典信息，checksum域用来携带检验预置字典是否完整的校验信息，并定义了控制PDU的PDU type域用来指示预置字典域中携带的预置字典信息为预置字典还是为预置字典的标识。
在本实施例中，具体以PDU type域的值为100时表示预置字典域携带的是预置字典的标识，PDU type域的值为101时表示预置字典域携带的是预置字典，那么，基站在接收到终端发送的控制PDU，首先通过D/C域的值为0确认接收到的是控制PDU，然后通过读取控制PDU的PDU type域，得知该控制PDU预置字典域中携带的预置字典信息为预置字典还是为预置字典的标识。
这里假设，控制PDU的PDU type域的值为101也即预置字典域携带的是预置字典，那么，控制PDU的checksum域还会携带校验信息，当基站在确认该PDU为控制PDU后，就会通过PDU type域的值为101确认该控制PDU预置字典域携带的是预置字典，然后利用checksum域中的校验信息检验携带的预置字典是否完整，若完整，则终端就完成了与所述基站的预置字典同步；若不完整，基站还可以利用控制PDU向终端发送基站侧给终端配置的预置字典，在此就不做过多讨论。
若控制PDU的PDU type域的值为100也即预置字典域携带的是预置字典的标识，控制PDU的checksum域不用携带校验信息，当基站在确认该PDU为控制PDU后，确认出控制PDU预置字典域携带的预置字典的标识，然后，从保存的字典中找出与该标识对应的字典，该字典即为终端需要在上行数据中使用的预置字典，这时，终端就完成了与基站的预置字典同步，那么，基站在后续收到终端利用该预置字典进行压缩的上行数据时，就可以利用该预置字典进行解压缩。
当然，在实际应用中，若控制PDU预置字典域携带的预置字典的标识为多个且各不相同时，基站还可以向终端指示终端在上行数据压缩中具体使用哪一个或哪几个标识对应的预置字典，这时终端还可以执行上述步骤A。
也即在基站接收到终端发送控制PDU，该控制PDU包括有多个且各不相同的预置字典标识的预置信息，基站可以向终端配置使用这些预置字典标识中的一个或多个标识对应的预置字典来进行上行数据的压缩，这里假设，终端向基站发送的预置字典信息中包括预置字典1对应的标识1，预置字典2对应的标识2，若基站向终端配置使用标识1对应的预置字典来进行上行数据的压缩，这时，基站就会向终端发送指示终端使用标识1对的预置字典1进行上行数据压缩的预置字典配置信息，那么，终端就会接收到这个预置字典配置信息，就可以从这个预置字典配置信息中确定出基站给终端配置的预置字典1，进而完成与基站的预置字典同步，那么，终端在后续就可以使用预置字典1来进行上行数据压缩，基站在接收到该上行数据后，就可以利用该预置字典进行解压缩。
所以，通过上述方法，终端可以使用数据PDU或控制PDU发送包括预置字典或预置字典标识的预置字典信息给基站，进而完成终端与基站的预置字典的同步，使得该终端能够使用同步后的字典进行数据压缩，基站能够使用该同步后的字典进行解压缩，所以，有效的解决了现有技术中，存在基站与终端的预置字典无法同步的技术问题。
基于同一发明构思，本申请实施例中提供了一种终端，该终端预置字典同步的具体实施可参见方法实施例部分的描述，重复之处不再赘述，请参考图4，该终端主要包括：
发送单元10，用于通过分组数据汇聚协议PDCP向基站发送携带有预置字典信息的协议数据单元PDU，完成与所述基站的预置字典同步；
其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
可选地，所述PDU为数据PDU时：
所述数据PDU的组成结构中包括Pre域，预置字典域以及checksum域，所述Pre域用于指示所述数据PDU中是否携带预置字典信息，所述预置字典域用于携带所述预置字典信息，所述checksum域用于携带检验所述预置字典 是否完整的校验信息。
可选地，所述PDU为控制PDU时：
所述控制PDU的组成结构中包括PDU type域，预置字典域以及checksum域，所述PDU type域用于指示所述预置字典域中携带的预置字典信息为预置字典还是为预置字典的标识，所述预置字典域用于携带所述预置字典信息，所述checksum域用于携带检验所述预置字典是否完整的校验信息。
可选地，所述预置字典信息具体包括所述预置字典和校验信息时，所述checksum域携带有所述校验信息，以便所述基站在接收到所述PDU时利用所述校验信息检验所述预置字典的完整性。
可选地，所述预置字典信息具体包括所述预置字典的标识，当所述标识为多个且各不相同时，还包括：
接收单元11，用于接收所述基站发送的预置字典配置信息，完成与所述基站的预置字典同步；
其中，所述配置信息包括所述基站在接收到所述PDU后，从多个标识中确定出用于所述终端进行数据压缩的预置字典对应的标识。
基于同一发明构思，本申请实施例提供了一种设备，该设备应用于终端侧，该设备实现预置字典同步的具体实施可参见方法实施例部分的描述，重复之处不再赘述，如图5所示，该设备主要包括处理器21和存储器22，其中，存储器22中保存有预设的程序，处理器21读取存储器22中的程序，按照该程序执行以下过程：
通过分组数据汇聚协议PDCP向基站发送携带有预置字典信息的协议数据单元PDU，完成与所述基站的预置字典同步；
其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
可选地，所述PDU为数据PDU时：
所述数据PDU的组成结构中包括Pre域，预置字典域以及checksum域，所述Pre域用于指示所述数据PDU中是否携带预置字典信息，所述预置字典 域用于携带所述预置字典信息，所述checksum域用于携带检验所述预置字典是否完整的校验信息。
可选地，所述PDU为控制PDU时：
所述控制PDU的组成结构中包括PDU type域，预置字典域以及checksum域，所述PDU type域用于指示所述预置字典域中携带的预置字典信息为预置字典还是为预置字典的标识，所述预置字典域用于携带所述预置字典信息，所述checksum域用于携带检验所述预置字典是否完整的校验信息。
可选地，所述预置字典信息具体包括所述预置字典和校验信息时，所述checksum域携带有所述校验信息，以便所述基站在接收到所述PDU时利用所述校验信息检验所述预置字典的完整性。
可选地，所述预置字典信息具体包括所述预置字典的标识，当所述标识为多个且各不相同时，所述通过分组数据汇聚协议PDCP向基站发送协议数据单元PDU之后，还包括：
接收所述基站发送的预置字典配置信息，完成与所述基站的预置字典同步；
其中，所述配置信息包括所述基站在接收到所述PDU后，从多个标识中确定出用于所述终端进行数据压缩的预置字典对应的标识。
可选地，在上述通过分组数据汇聚协议PDCP向基站发送携带有预置字典信息的协议数据单元PDU的过程中，以及在接收所述基站发送的预置字典配置信息的过程中，均可以通过收发机实现发送和接收过程，也就是说，收发机在处理器21的控制下接收和发送数据。
存储器22可以包括只读存储器(ROM)和随机存取存储器(RAM)，并向处理器21提供存储器22中存储的程序指令和数据。在本申请实施例中，存储器22可以用于存储本申请实施例提供的任一所述方法的程序。
处理器21通过调用存储器22存储的程序指令，处理器21用于按照获得的程序指令执行本申请实施例提供的任一所述方法。
基于同一发明构思，本申请实施例中提供了一种预置字典同步方法，应 用于基站侧，该预置字典同步方法的工作原理与前述一种应用于终端侧的预置字典同步方法相似，因此，该预置字典同步方法的具体实施可参见上述应用于终端侧的预置字典同步方法，重复之处不再赘述。
具体地，本申请实施例中提供的一种预置字典同步方法，应用于基站侧，包括：
接收终端通过分组数据汇聚协议PDCP发送的携带有预置字典信息的协议数据单元PDU，完成与所述终端的预置字典同步；
其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
可选地，所述预置字典信息具体包括所述预置字典的标识，当所述标识为多个且各不相同时，还包括：
向所述终端发送预置字典配置信息，完成与所述终端的预置字典同步；
其中，所述配置信息包括在接收到所述PDU后，从多个标识中确定出用于所述终端进行数据压缩的预置字典对应的标识。
基于同一发明构思，本申请实施例中提供了一种基站，该基站预置字典同步的具体实施可参见方法实施例部分的描述，重复之处不再赘述，该基站包括：
接收单元，用于接收终端通过分组数据汇聚协议PDCP发送的携带有预置字典信息的协议数据单元PDU，完成与所述终端的预置字典同步；
其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
可选地，所述预置字典信息具体包括所述预置字典的标识，当所述标识为多个且各不相同时，还包括：
发送单元，用于向所述终端发送预置字典配置信息，完成与所述终端的预置字典同步；
其中，所述配置信息包括在接收到所述PDU后，从多个标识中确定出用于所述终端进行数据压缩的预置字典对应的标识。
基于同一发明构思，本申请实施例提供了一种预置字典同步装置，该装置应用于基站侧，该装置实现预置字典同步的具体实施可参见方法实施例部分的描述，重复之处不再赘述；该装置包括：
存储器，用于保存预设的程序；
处理器，用于读取所述存储器中的程序，按照该程序执行以下过程：
接收终端通过分组数据汇聚协议PDCP发送的携带有预置字典信息的协议数据单元PDU，完成与所述终端的预置字典同步；
其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
可选地，该装置还包括：收发机；收发机，用于在处理器的控制下接收和发送数据；因此，可以通过收发机接收终端发送的携带有预置字典信息的协议数据单元PDU。
存储器可以包括只读存储器(ROM)和随机存取存储器(RAM)，并向处理器提供存储器中存储的程序指令和数据。在本申请实施例中，存储器可以用于存储本申请实施例提供的任一所述方法的程序。
处理器通过调用存储器存储的程序指令，处理器用于按照获得的程序指令执行本申请实施例提供的任一所述方法。
其中，终端设备也可称之为用户设备(User Equipment,简称为“UE”)、移动台(Mobile Station,简称为“MS”)、移动终端(Mobile Terminal)等，可选地，该终端可以具备经无线接入网(Radio Access Network,RAN)与一个或多个核心网进行通信的能力，例如，终端可以是移动电话(或称为“蜂窝”电话)、或具有移动性质的计算机等，例如，终端还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。
基站可以称之为网络设备(例如，接入点设备)，指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换，作为无线终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)网络。基站还可协调对空中接口 的属性管理。例如，基站可以是GSM或CDMA中的基站(BTS，Base Transceiver Station)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，本方面实施例中不做限定。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
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。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置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。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供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步骤。
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了 基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请实施例的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (16)

  1. 一种预置字典同步方法，应用于终端，其特征在于，包括：
    通过分组数据汇聚协议PDCP向基站发送携带有预置字典信息的协议数据单元PDU，完成与所述基站的预置字典同步；
    其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
  2. 如权利要求1所述的方法，其特征在于，所述PDU为数据PDU时：
    所述数据PDU的组成结构中包括Pre域，预置字典域以及checksum域，所述Pre域用于指示所述数据PDU中是否携带预置字典信息，所述预置字典域用于携带所述预置字典信息，所述checksum域用于携带检验所述预置字典是否完整的校验信息。
  3. 如权利要求1所述的方法，其特征在于，所述PDU为控制PDU时：
    所述控制PDU的组成结构中包括PDU type域，预置字典域以及checksum域，所述PDU type域用于指示所述预置字典域中携带的预置字典信息为预置字典还是为预置字典的标识，所述预置字典域用于携带所述预置字典信息，所述checksum域用于携带检验所述预置字典是否完整的校验信息。
  4. 如权利要求2或3所述的方法，其特征在于，所述预置字典信息具体包括所述预置字典和校验信息时，所述checksum域携带有所述校验信息，以便所述基站在接收到所述PDU时利用所述校验信息检验所述预置字典的完整性。
  5. 如权利要求4所述的方法，其特征在于，所述预置字典信息具体包括所述预置字典的标识，当所述标识为多个且各不相同时，所述通过分组数据汇聚协议PDCP向基站发送协议数据单元PDU之后，还包括：
    接收所述基站发送的预置字典配置信息，完成与所述基站的预置字典同步；
    其中，所述配置信息包括所述基站在接收到所述PDU后，从多个标识中 确定出用于所述终端进行数据压缩的预置字典对应的标识。
  6. 一种预置字典同步方法，应用于基站，其特征在于，包括：
    接收终端通过分组数据汇聚协议PDCP发送的携带有预置字典信息的协议数据单元PDU，完成与所述终端的预置字典同步；
    其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
  7. 如权利要求6所述的方法，其特征在于，所述预置字典信息具体包括所述预置字典的标识，当所述标识为多个且各不相同时，还包括：
    向所述终端发送预置字典配置信息，完成与所述终端的预置字典同步；
    其中，所述配置信息包括在接收到所述PDU后，从多个标识中确定出用于所述终端进行数据压缩的预置字典对应的标识。
  8. 一种终端，其特征在于，包括：
    发送单元，用于通过分组数据汇聚协议PDCP向基站发送携带有预置字典信息的协议数据单元PDU，完成与所述基站的预置字典同步；
    其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
  9. 如权利要求8所述的终端，其特征在于，所述PDU为数据PDU时：
    所述数据PDU的组成结构中包括Pre域，预置字典域以及checksum域，所述Pre域用于指示所述数据PDU中是否携带预置字典信息，所述预置字典域用于携带所述预置字典信息，所述checksum域用于携带检验所述预置字典是否完整的校验信息。
  10. 如权利要求8所述的终端，其特征在于，所述PDU为控制PDU时：
    所述控制PDU的组成结构中包括PDU type域，预置字典域以及checksum域，所述PDU type域用于指示所述预置字典域中携带的预置字典信息为预置字典还是为预置字典的标识，所述预置字典域用于携带所述预置字典信息，所述checksum域用于携带检验所述预置字典是否完整的校验信息。
  11. 如权利要求9或10所述的终端，其特征在于，所述预置字典信息具 体包括所述预置字典和校验信息时，所述checksum域携带有所述校验信息，以便所述基站在接收到所述PDU时利用所述校验信息检验所述预置字典的完整性。
  12. 如权利要求11所述的终端，其特征在于，所述预置字典信息具体包括所述预置字典的标识，当所述标识为多个且各不相同时，还包括：
    接收单元，用于接收所述基站发送的预置字典配置信息完成与所述基站的预置字典同步；
    其中，所述配置信息包括所述基站在接收到所述PDU后，从多个标识中确定出用于所述终端进行数据压缩的预置字典对应的标识。
  13. 一种基站，其特征在于，包括：
    接收单元，用于接收终端通过分组数据汇聚协议PDCP发送的携带有预置字典信息的协议数据单元PDU，完成与所述终端的预置字典同步；
    其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
  14. 如权利要求13所述的基站，其特征在于，所述预置字典信息具体包括所述预置字典的标识，当所述标识为多个且各不相同时，还包括：
    发送单元，用于向所述终端发送预置字典配置信息，完成与所述终端的预置字典同步；
    其中，所述配置信息包括在接收到所述PDU后，从多个标识中确定出用于所述终端进行数据压缩的预置字典对应的标识。
  15. 一种预置字典同步装置，其特征在于，包括：
    存储器，用于保存预设的程序；
    处理器，用于读取所述存储器中的程序，按照该程序执行以下过程：
    通过分组数据汇聚协议PDCP向基站发送携带有预置字典信息的协议数据单元PDU，完成与所述基站的预置字典同步；
    其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
  16. 一种预置字典同步装置，其特征在于，包括：
    存储器，用于保存预设的程序；
    处理器，用于读取所述存储器中的程序，按照该程序执行以下过程：
    接收终端通过分组数据汇聚协议PDCP发送的携带有预置字典信息的协议数据单元PDU，完成与所述终端的预置字典同步；
    其中，所述预置字典信息包括预置字典或预置字典的标识，所述预置字典用于所述终端压缩上行数据。
PCT/CN2018/090310 2017-07-11 2018-06-07 一种预置字典同步方法及终端 WO2019011086A1 (zh)

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