WO2019105321A1 - 字典配置方法、缓存控制方法、网络侧设备及用户设备 - Google Patents

字典配置方法、缓存控制方法、网络侧设备及用户设备 Download PDF

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Publication number
WO2019105321A1
WO2019105321A1 PCT/CN2018/117415 CN2018117415W WO2019105321A1 WO 2019105321 A1 WO2019105321 A1 WO 2019105321A1 CN 2018117415 W CN2018117415 W CN 2018117415W WO 2019105321 A1 WO2019105321 A1 WO 2019105321A1
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WIPO (PCT)
Prior art keywords
dictionary
user equipment
side device
network side
cache
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Ceased
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PCT/CN2018/117415
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English (en)
French (fr)
Inventor
陈宁宇
胡南
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
Original Assignee
China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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Application filed by China Mobile Communications Group Co Ltd, Research Institute of China Mobile Communication Co Ltd filed Critical China Mobile Communications Group Co Ltd
Priority to EP18884113.4A priority Critical patent/EP3720175A4/en
Priority to US16/767,159 priority patent/US11627491B2/en
Publication of WO2019105321A1 publication Critical patent/WO2019105321A1/zh
Anticipated expiration legal-status Critical
Priority to US18/297,092 priority patent/US12289637B2/en
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/04—Protocols for data compression, e.g. ROHC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/30—Flow control; Congestion control in combination with information about buffer occupancy at either end or at transit nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/38—Flow control; Congestion control by adapting coding or compression rate
    • 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
    • H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3084—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction using adaptive string matching, e.g. the Lempel-Ziv method
    • H03M7/3088—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction using adaptive string matching, e.g. the Lempel-Ziv method employing the use of a dictionary, e.g. LZ78
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H03M7/4031—Fixed length to variable length coding
    • H03M7/4037—Prefix coding
    • H03M7/4043—Adaptive prefix coding
    • H03M7/4062—Coding table adaptation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/60—General implementation details not specific to a particular type of compression
    • H03M7/6052—Synchronisation of encoder and decoder
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • the present disclosure relates to the field of wireless technologies, and in particular, to a dictionary configuration method, a cache control method, a network side device, and a user equipment.
  • the data can be compressed using a dictionary when transferring data.
  • the purpose of data compression is to compress huge data that needs to be transmitted into short data according to a dictionary to achieve fast and efficient transmission.
  • the UE User Equipment
  • the network side device pre-stores the same dictionary.
  • the sender uses the dictionary for data compression
  • the receiver uses the same dictionary for data solution. compression.
  • the technical problem to be solved by the present disclosure is to provide a dictionary configuration method, a cache control method, a network side device, and a user equipment, which enable the network side to configure the most suitable dictionary for the UE.
  • the present disclosure provides a cache control method.
  • the cache control method is applied to the network side device, and the method includes: the network side device receiving the first check information sent by the user equipment; the network side device determining the content of the compressed cache in the user equipment and the network Whether the content of the decompressed cache in the side device is the same; and when the content of the compressed cache is different from the content of the decompressed cache, the network side device sends the first cache reset information to the user equipment.
  • the cache control method further includes: the network side device acquiring capability information of the user equipment,
  • the capability information includes an indication of whether the user equipment supports uplink data compression UDC.
  • the first cache reset information is used to instruct the user equipment to release or clear the compression buffer of the user equipment.
  • the network side device sends the first cache reset information to the user equipment, where the network side device sends the first cache reset information by using a packet data convergence protocol (PDCP) data unit PDU.
  • PDCP packet data convergence protocol
  • the cache control method further includes: when the user equipment supports the UDC, the network side device sends a UDC activation indication, activates or enables a dictionary indication, and activates or enables the user equipment to the user equipment. At least one of the M number dictionary indications, where M is a positive integer greater than one.
  • the cache control method further includes: when the user equipment is in a connected state, the network side device sends UDC configuration information to the user equipment, where the UDC configuration information includes a UDC deactivation indication, a UDC dictionary.
  • the UDC configuration information includes a UDC deactivation indication, a UDC dictionary.
  • the cache control method further includes: the network side device sending second check information to the user equipment; the network side device receiving second cache reset information sent by the user equipment, The second cache reset information is used to instruct the network side device to release or clear the compressed cache in the network side device.
  • the present disclosure provides a cache control method.
  • the cache control method is applied to the user equipment, the method includes: the user equipment sends first verification information to the network side device; and the user equipment receives first cache reset information from the network side device; And releasing or clearing the current compression cache of the user equipment according to the content of the first cache reset information.
  • the cache control method further includes: the user equipment receiving, by the network side device, an uplink data compression UDC activation indication, activating or enabling a dictionary indication, and activating or enabling at least one of the Mth dictionary indication, Wherein M is a positive integer greater than one.
  • the user equipment compares each packet data convergence protocol PDCP data packet with the content of the compression cache in the user equipment, and uses The compression cache identifier replaces the original PDCP data packet to implement uplink data compression; if the user equipment receives the activation or enable dictionary indication, the user equipment stores the dictionary in the compression cache, and compresses the dictionary by using the dictionary in the compression cache.
  • the first PDCP packet in the bearer the compression cache is updated according to the continuation of the transmitted data packet, and the subsequent data packet continues to be compressed using the updated compression cache; if the user equipment receives the activation or activation of the M index dictionary, the user The device stores the dictionary of the Mth in the dictionary of the previously configured network side device in the compression cache, and compresses the first PDCP packet in the host by using the dictionary of the Mth, the compression cache is continued according to the transmitted data packet. The update is performed and subsequent packets continue to be compressed using the updated compression cache.
  • the user equipment when the user equipment is in a connected state, the user equipment receives UDC configuration information from the network side device, where the UDC configuration information includes one or more of the following information: a UDC deactivation indication, UDC dictionary reset indication, UDC dictionary overload indication.
  • the UDC configuration information includes one or more of the following information: a UDC deactivation indication, UDC dictionary reset indication, UDC dictionary overload indication.
  • the user equipment when the user equipment receives the UDC deactivation indication, the user equipment stops the UDC, and the subsequent packet data convergence protocol PDCP data packet does not adopt UDC compression; when the user equipment receives the UDC dictionary reset When indicated, the user equipment clears the compression cache; and when the user equipment receives the UDC dictionary reload indication, the user equipment reloads the compression cache with a dictionary.
  • the cache control method further includes: the user equipment receives the network side device to send second check information; the user equipment determines content of the decompression cache in the user equipment and the network side Whether the content of the compressed cache in the device is the same; and when the content of the compressed cache of the network side device is different from the content of the decompressed cache of the user equipment, the user equipment sends a second to the network side device Cache reset information.
  • the second cache reset information is used to instruct the network side device to release or clear the compression cache of the network side device.
  • the present disclosure provides a dictionary configuration method.
  • the dictionary configuration method is applied to the network side device, and the method includes: the network side device configuring a dictionary for uplink data compression for the user equipment; and the network side device notifying the user equipment of the uplink data Compressed dictionary.
  • the network side device notifying the user equipment of the dictionary for uplink data compression comprising: the network side device notifying the user equipment to activate, or deactivate, or reset for uplink data compression a dictionary; or the network side device sends a dictionary to the user equipment.
  • the method further includes: the network side device acquiring capability information of the user equipment, where the capability information includes the Whether the user equipment supports uplink data compression; and when the user equipment supports uplink data compression, the network side device configures a dictionary for uplink data compression for the user equipment.
  • the network side device notifying the user equipment to activate, or deactivate, or reset a dictionary for uplink data compression includes: the network side device sending a radio resource control RRC connection reconfiguration to the user equipment a message, the RRC connection reconfiguration message includes at least one of: activating or enabling a dictionary indication; activating or enabling an Mth dictionary indication, wherein the Mth dictionary is a plurality of dictionaries pre-stored by the user equipment One of them, M stands for a positive integer.
  • the method further includes: the network side device sending an RRC message to the user equipment, where the RRC message includes the following information. At least one of: a dictionary deactivation or stop indication; a dictionary reset indication; and an upstream data compression dictionary overload indication.
  • the network side device notifying the user equipment to activate, or deactivate, or reset a dictionary for uplink data compression includes: the network side device sending a packet data convergence protocol PDCP protocol to the user equipment a data unit PDU, the PDU carrying at least one of the following information: a dictionary deactivating or stopping the indication; activating or enabling the dictionary indication; a dictionary reset indication; and one of the plurality of dictionaries pre-stored by the user equipment The identifier of the dictionary.
  • the network side device notifying the user equipment to activate, or deactivate, or reset the dictionary for uplink data compression includes: the network side device sends a system broadcast message, where the system broadcast message includes the following At least one of the information: a dictionary deactivation or stop indication of the bearer with a scale value of N; an activation or enable dictionary indication of the bearer with a scale value of N; a dictionary reset indication of the bearer with a scale value of N; An indication of the activation of the Mth dictionary of the bearer having a value of N, wherein the Mth dictionary is one of a plurality of dictionaries pre-stored by the user equipment.
  • the present disclosure provides a dictionary configuration method.
  • the method is applied to a user equipment, the method includes: the user equipment acquires an indication or a dictionary from a network side device; and the user equipment activates, or deactivates, or resets for uplink data compression according to an indication of the network side device. Dictionary.
  • the method further includes: when the user equipment performs the tracking area update, reporting the capability information of the user equipment to the network side device,
  • the capability information includes the user equipment supporting uplink data compression.
  • the user equipment acquires an indication from the network side device, where the user equipment receives a radio resource control RRC connection reconfiguration message sent by the network side device, where the RRC connection reconfiguration message includes the following information. At least one of: activating or enabling a dictionary indication; activating or enabling a M-th dictionary indication, wherein the M-th dictionary is one of a plurality of dictionaries pre-stored by the user equipment, and M is a positive integer.
  • the user equipment when the activation or enable dictionary indication is included in the RRC connection reconfiguration message, the user equipment stores the dictionary in a compression cache, and uses the dictionary to compress the first packet in the current bearer.
  • the user equipment acquires the indication from the network side device, where the user equipment receives an RRC message sent by the network side device, where the RRC message includes at least one of the following information: a dictionary is deactivated or stopped. Indication; dictionary reset indication; uplink data compression dictionary overload indication.
  • the user equipment stops the uplink data compression function; or when the dictionary reset indication is included in the RRC message, the user The device clears the compressed buffer of the uplink data compression; or when the uplink data compression dictionary reload indication is included in the RRC message, the user equipment reuses the dictionary to load the compressed buffer of the uplink data compression.
  • the user equipment acquires the indication from the network side device, where the user equipment receives the packet data convergence protocol PDCP protocol data unit PDU sent by the network side device, and activates or deactivates the uplink data according to the PDU.
  • Compressing a dictionary the PDU carrying at least one of the following information: a dictionary deactivating or stopping the indication; activating or enabling the dictionary indication; a dictionary reset indication; the plurality of dictionaries pre-stored by the user equipment, one of the dictionaries Logo.
  • the user equipment acquires the indication from the network side device, where the user equipment receives the system broadcast message sent by the network side device, and activates or deactivates the uplink data compression dictionary of the bearer according to the system broadcast message.
  • the system broadcast message includes at least one of the following information: a dictionary deactivation or stop indication of a bearer with a scale value of N; an activation or enable dictionary indication of a bearer with a scale value of N; and a scale value of N
  • a dictionary reset indication of the bearer an indication of the activation of the Mth dictionary of the bearer with a scale value of N, wherein the dictionary of the Mth is one of a plurality of dictionaries pre-stored by the user equipment.
  • the disclosure provides a network side device, the device includes: a processor, a transceiver, and a decompression buffer, wherein the transceiver is configured to receive first verification information sent by a user equipment; Is: determining whether the content of the compressed cache in the user equipment is the same as the content of the decompressed cache; and when the content of the compressed cache is different from the content of the decompressed cache, by using the transceiver The user equipment sends the first cache reset information.
  • the transceiver is further configured to acquire capability information of the user equipment before the transceiver receives the first verification information sent by the user equipment, where the capability information includes whether the user equipment is Supports instructions for upstream data compression UDC.
  • the first cache reset information is used to instruct the user equipment to release or clear the compression buffer of the user equipment.
  • the transceiver is further configured to send the first cache reset information by a packet data convergence protocol PDCP protocol data unit PDU.
  • PDCP protocol data unit PDU packet data convergence protocol
  • the transceiver is further configured to: when the user equipment supports the UDC, send a UDC activation indication, activate or enable a dictionary indication, and activate or enable the M indicator dictionary indication to the user equipment. At least one, where M is a positive integer greater than one.
  • the transceiver is further configured to: when the user equipment is in a connected state, send UDC configuration information to the user equipment, where the UDC configuration information includes a UDC deactivation indication, a UDC dictionary reset indication, a UDC One or more of the dictionary overload indications.
  • the network side device further includes a compression buffer
  • the processor is further configured to: send, by the transceiver, second verification information to the user equipment; and receive the user by using the transceiver The second cache reset information sent by the device, where the second cache reset information is used to instruct the network side device to release or clear the compression cache of the network side device.
  • the present disclosure provides a user equipment, where the device includes: a processor, a transceiver, and a compression buffer; wherein the transceiver is configured to send first verification information to the network side device and from the network side device Receiving the first cache reset information, the processor is configured to release or clear the compression cache of the user equipment according to the content of the first cache reset information.
  • the transceiver is further configured to: receive at least one of an uplink data compression UDC activation indication, activate or enable a dictionary indication, and activate or enable an Mth dictionary indication from the network side device, where the M Is a positive integer greater than one.
  • the processor compares each packet data convergence protocol PDCP data packet with the content of the compression cache in the user equipment, and uses The compression cache identifier replaces the original PDCP data packet to implement uplink data compression; if the transceiver receives the activation or enable dictionary indication, the processor stores the dictionary in the compression cache, and uses the dictionary in the compression cache to Compressing the first PDCP packet in the bearer, the compression buffer is updated according to the continuation of the transmitted data packet, and the subsequent data packet continues to be compressed using the updated compression buffer; if the transceiver receives the activation or activation of the Mth dictionary Instructing, the processor stores the dictionary of the Mth in the dictionary of the previously received network side device configuration into the compression cache, and compresses the first PDCP packet in the host by using the dictionary of the Mth number, the compression buffer Updates are continued based on the transmitted packets, and subsequent packets continue to be compressed using the updated compression cache.
  • the transceiver when the user equipment is in a connected state, receives UDC configuration information from the network side device, where the UDC configuration information includes one or more of the following information: a UDC deactivation indication, UDC dictionary reset indication, UDC dictionary overload indication.
  • the processor stops the UDC, and the subsequent packet data convergence protocol PDCP data packet does not adopt UDC compression; when the transceiver receives the UDC dictionary reset When indicated, the processor clears the compression buffer; and when the transceiver receives the UDC dictionary reload indication, the processor reloads the compression cache with a dictionary.
  • the user equipment further includes a decompression buffer, and the transceiver is further configured to receive, by the network side device, second verification information;
  • the processor is further configured to determine whether content of the decompressed cache in the user equipment is the same as content of the compressed cache in the network side device; and when the content of the decompressed cache in the user equipment is When the content of the compression buffer in the network side device is different, the second cache reset information is sent to the network side device by the transceiver.
  • the present disclosure provides a network side device, the device comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the processor executes the In the program, the processor implements the cache control method described in the first aspect.
  • the present disclosure provides a user equipment, the device comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor; wherein the processor executes the program
  • the processor implements the cache control method as described in the second aspect.
  • the present disclosure provides a non-transitory computer readable storage medium having stored thereon a computer program, wherein the program is executed by a processor to implement a cache control method as described in the first release The steps or steps in the cache control method as described in the second aspect.
  • the network side device can dynamically configure a dictionary for uplink data compression for the user equipment, and notify the user equipment to activate, or deactivate, or reset the dictionary, and then the user equipment configures according to the acquired network side device.
  • the dictionary performs uplink data compression.
  • the user equipment does not use the pre-stored static dictionary for uplink data compression, but uses the dictionary dynamically configured by the network side device to perform uplink data compression, so that the network side can be the UE. Configure the most appropriate dictionary.
  • FIG. 1 is a schematic flowchart of a dictionary configuration method applied to a network side device according to some embodiments of the present disclosure
  • FIG. 2 is a schematic flowchart of a dictionary configuration method applied to a user equipment according to some embodiments of the present disclosure
  • 3A and 3B are schematic flowcharts of a cache control method applied to a network side device according to some embodiments of the present disclosure
  • 4A and 4B are schematic flowcharts of a cache control method applied to a user equipment according to some embodiments of the present disclosure
  • 5A-5E are schematic structural diagrams of PDCP PDUs according to some embodiments of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a network side device according to some embodiments of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a user equipment according to some embodiments of the present disclosure.
  • the same static dictionary is pre-stored in the user equipment (UE) and the network side device, so that the static dictionary is used for data compression and decompression during data transmission.
  • the disadvantage of the same static dictionary is that it is not flexible enough. Since the dictionary used in different areas of the network may be different, the dictionary used in different time periods in the same area may also change, so the pre-stored static dictionary cannot guarantee that the most suitable dictionary is configured for the UE.
  • Some embodiments of the present disclosure provide a dictionary configuration method, a cache control method, a network side device, and a user equipment. Some embodiments of the present disclosure enable a network side device to configure a most suitable dictionary for Uplink Data Compression (UDC) for the UE.
  • UDC Uplink Data Compression
  • Some embodiments of the present disclosure provide a dictionary configuration method, which is applied to a network side device, as shown in FIG. 1, the method includes steps 101-102.
  • Step 101 The network side device configures a dictionary for uplink data compression for the user equipment.
  • Step 102 The network side device notifies the user equipment of the dictionary for uplink data compression.
  • the network side device can dynamically configure a dictionary for uplink data compression for the user equipment, and notify the user equipment of the dictionary configured by the network side device. Therefore, the user equipment can obtain a dictionary for uplink data compression configured by the network side device for the user equipment, and perform uplink data compression according to the obtained dictionary of the network side device configuration.
  • the user equipment does not use the pre-stored static dictionary for uplink data compression, but uses the dictionary dynamically configured by the network side device to perform uplink data compression, so that the network side can configure the most suitable dictionary for the UE.
  • the network side device may be a base station.
  • the data to be compressed may be a SIP (Session Initiation Protocol) signaling (such as the first SIP signaling invite) of VoLTE (Voice over LTE) (IP Multimedia Subsystem)-based voice service, which may be HTTP (HyperText Transfer Protocol) web page request, which can be an FTP (File Transfer Protocol) packet or the like.
  • SIP Session Initiation Protocol
  • VoLTE Voice over LTE
  • IP Multimedia Subsystem IP Multimedia Subsystem
  • HTTP HyperText Transfer Protocol
  • FTP File Transfer Protocol
  • the network side device may configure a dictionary for the UE; the network side device notifies the UE to activate the dictionary for uplink data compression; and then the UE uses the configured dictionary for uplink data compression according to the notification of the network side device.
  • the network side device may pre-configure a plurality of dictionaries for the UE and the UE stores the plurality of dictionaries; the network side device broadcasts a dictionary number used by the local cell to the UE by using a broadcast message, or passes an RRC (Radio Resource Control) message.
  • RRC Radio Resource Control
  • the network side device does not configure a dictionary for the UE, the network side device notifies the UE to activate the dictionary for uplink data compression; then, the UE may use the default dictionary saved by the UE for uplink data compression.
  • the step of the network side device notifying the user equipment of the dictionary for data compression may include: the network side device notifying the user equipment to activate, or deactivate, or reset a dictionary for uplink data compression; or The network side device sends a dictionary to the user equipment.
  • the method further includes: the network side device acquiring capability information of the user equipment, where the capability information includes the Whether the user equipment supports uplink data compression UDC.
  • the network side device configuring the dictionary for the uplink data compression for the user equipment specifically includes: when the user equipment supports uplink data compression, the network side device configures a dictionary for uplink data compression for the user equipment.
  • a feasible dictionary update timing is that when the UE needs to perform a TAU (Tracking Area Update) in a new TA (Tracking Area), the UE reports to the network side device that the UE has acquired the dictionary and The cell ID or area ID of the dictionary was last obtained.
  • the network side device sends a new dictionary to the UE, or the network side device does not send a dictionary to the UE, and the UE still uses the original dictionary.
  • the network side device configures a TA list (Tracking area list) for the UE.
  • TA list Tracking area list
  • the UE initiates TAU.
  • the UE sends an uplink RRC message to the network side device, and the message may include NAS (Network Access Server) layer TAU information and UDC (uplink data compression) information.
  • the UDC information may include one or more of the following information: the UE supports state information of the UDC, information of a dictionary supported by the UE, and a dictionary identification number.
  • the status information of the UE supporting the UDC is used to notify the network side device UE of the support status of the UDC, and the information of the dictionary supported by the UE is used by the network side device to learn the dictionary that the UE can support (that is, the dictionary that the UE can be configured), and the dictionary identification The number is used by the network side device to learn the dictionary that the UE has currently stored.
  • the network side device notifying the user equipment to activate, or deactivate or reset the dictionary for uplink data compression comprises: the network side device sending a radio resource control RRC connection reconfiguration message to the user equipment .
  • the RRC Connection Reconfiguration message includes at least one of the following indications: an indication to activate or enable the dictionary; and an indication to activate or enable the No. M dictionary.
  • the activation or activation of the dictionary refers to the beginning of using a dictionary, which is a dictionary that the network side device notifies the user equipment for uplink data compression.
  • a dictionary which is a dictionary that the network side device notifies the user equipment for uplink data compression.
  • the Mth dictionary is one of a plurality of dictionaries pre-stored by the user equipment, where M represents a positive integer.
  • the RRC connection reconfiguration message may further include an uplink data compression activation indication.
  • the uplink data compression activation indication is used to instruct the user equipment to enable the uplink data compression function.
  • the method further includes: the network side device sending an RRC message to the user equipment, where the RRC message includes the following indication At least one of: a dictionary deactivation or stop indication, a dictionary reset indication, and an uplink data compression dictionary reload indication.
  • the deactivation or stop indication refers to stopping the use of the dictionary for uplink data compression.
  • the RRC message may further include an uplink data compression deactivation indication.
  • the uplink data compression deactivation indication is used to instruct the user equipment to stop the uplink data compression function.
  • the network side device notifying the user equipment to activate, or deactivate or reset a dictionary for uplink data compression includes: the network side device sending a packet data convergence protocol PDCP protocol data to the user equipment Unit PDU.
  • the PDU carries at least one of the following information: a dictionary deactivation or stop indication, activation or activation of a dictionary indication, activation or activation of an indication of the Mth dictionary, a dictionary reset indication, and an uplink data compression dictionary reload indication.
  • an uplink data compression activation indication may also be included in the PDCP PDU.
  • the uplink data compression activation indication is used to instruct the user equipment to enable the uplink data compression function.
  • the network side device notifying the user equipment to activate, or deactivate or reset a dictionary for uplink data compression includes: the network side device sending a system broadcast message.
  • the system broadcast message includes at least one of the following information: a dictionary deactivation or stop indication of a bearer with a scale value of N; an activation or enable dictionary indication of a bearer with a scale value of N; and a bearer with a scale value of N;
  • the scale value of the N is the indication of the activation of the Mth dictionary.
  • the dictionary of the Mth is one of a plurality of dictionaries pre-stored by the user equipment, where N is a positive integer.
  • the system broadcast message may further include an uplink data compression activation indication of the bearer with a scale value of N.
  • the uplink data compression activation indication is used to indicate that the bearer with the scaling value of N initiates the uplink data compression function.
  • Some embodiments of the present disclosure also provide a dictionary configuration method.
  • This dictionary configuration method is applied to user equipment. As shown in FIG. 2, the method includes steps 201-202.
  • Step 201 The user equipment acquires an indication or a dictionary from the network side device.
  • Step 202 The user equipment activates, or deactivates, or resets a dictionary for uplink data compression according to an indication of the network side device.
  • the network side device can dynamically configure a dictionary for uplink data compression for the user equipment, and notify the user equipment of the dictionary configured by the network side device. According to the notification of the network side device, the user equipment can activate, deactivate or reset the dictionary. Therefore, the user equipment can obtain a dictionary for uplink data compression configured by the network side device for the user equipment, and perform uplink data compression according to the obtained dictionary of the network side device configuration.
  • the user equipment does not use the pre-stored static dictionary for uplink data compression, but uses the dictionary dynamically configured by the network side device to perform uplink data compression, so that the network side can configure the most suitable dictionary for the UE.
  • the method further includes: when the user equipment performs the tracking area update, reporting the capability information of the user equipment to the network side device,
  • the capability information includes that the user equipment supports uplink data compression. Then, the user equipment activates, or deactivates or resets the dictionary for uplink data compression according to the indication of the network side device.
  • the acquiring, by the user equipment, the indication from the network side device includes: receiving, by the user equipment, a radio resource control RRC connection reconfiguration message sent by the network side device.
  • the RRC Connection Reconfiguration message includes at least one of the following: activating or enabling a dictionary indication; activating or enabling the Mth dictionary indication.
  • the Mth dictionary is one of a plurality of dictionaries pre-stored by the user terminal user equipment, and M is a positive integer.
  • the user equipment When the RRC connection reconfiguration message includes the activation or enable dictionary indication, the user equipment stores the dictionary in a compression cache, and uses the dictionary to compress the first packet data convergence protocol PDCP in the current bearer. a packet; or, when the RRC connection reconfiguration message includes the activation or activation of the Mth dictionary indication, the user equipment stores the M th dictionary of the plurality of pre-stored dictionaries in a compression buffer, and The first PDCP packet in the current bearer is compressed by using the Mth dictionary.
  • the compression cache mentioned in this disclosure may be a dedicated physical cache or virtual cache allocated for compression operations in the user equipment.
  • the RRC connection reconfiguration message may further include an uplink data compression activation indication.
  • the uplink data compression activation indication is used to instruct the user equipment to enable the uplink data compression function.
  • the user equipment acquires the indication from the network side device, where the user equipment receives an RRC message sent by the network side device, where the RRC message includes at least one of the following information: a dictionary is deactivated or stopped. Indication; dictionary reset indication; uplink data compression dictionary overload indication.
  • the user equipment stops the uplink data compression function when the dictionary deactivation or stop indication is included in the RRC message; or when the dictionary reset indication is included in the RRC message, the user equipment is cleared for a compression buffer for uplink data compression; or when the uplink data compression dictionary reload indication is included in the RRC message, the user equipment reuses the dictionary to load a compression buffer for uplink data compression.
  • the RRC message may further include an uplink data compression deactivation indication.
  • the uplink data compression deactivation indication is used to instruct the user equipment to stop the uplink data compression function.
  • the user equipment acquires the indication from the network side device, where the user equipment receives the packet data convergence protocol PDCP protocol data unit PDU sent by the network side device, and activates or deactivates the uplink data according to the PDU. Compress the dictionary.
  • the PDU carries at least one of the following information: a dictionary deactivating or stopping the indication; activating or enabling the dictionary indication; a dictionary reset indication; and an identifier of one of the plurality of dictionaries pre-stored by the user equipment.
  • the user equipment acquires the indication from the network side device, where the user equipment receives the system broadcast message sent by the network side device.
  • the UE activates or deactivates a dictionary for uplink data compression according to the system broadcast message.
  • the system broadcast message includes at least one of the following information: a dictionary deactivation or stop indication of a bearer with a scale value of N; an activation or enable dictionary indication of a bearer with a scale value of N; and a bearer with a scale value of N;
  • the dictionary reset indication an indication of the activation of the Mth dictionary of the bearer with a scale value of N, wherein the Mth dictionary is one of a plurality of dictionaries pre-stored by the user equipment.
  • N is a positive integer.
  • Some embodiments of the present disclosure also provide a cache control method.
  • the cache control method is used to establish consistent cached content between the network side device and the user equipment.
  • the cache control method is applied to a network side device, and the method includes steps 301-303, as shown in FIG. 3A.
  • Step 301 The network side device receives the first verification information sent by the user equipment.
  • Step 302 The network side device determines whether the content of the compression cache in the user equipment is the same as the content of the decompression cache in the network side device.
  • Step 303 When the content of the compressed cache is different from the content of the decompressed cache, the network side device sends the first cache reset information to the user equipment.
  • the first cache reset information is used to instruct the user equipment to release or clear the compression buffer of the user equipment.
  • the network side device may determine, according to the first check information, whether the content of the compressed cache in the user equipment is the same as the content of the decompressed cache in the network side device.
  • the cache control method further includes: the network side device acquiring capability information of the user equipment, where The capability information includes an indication of whether the user equipment supports uplink data compression UDC.
  • the network side device may obtain the capability information of the user equipment from the core network device, or the user equipment may report the capability information of the user equipment to the network side device.
  • a compression cache may also be set in the network side device, and a decompression cache may also be set in the user equipment.
  • the cache control method may further include steps 401-403, as shown in FIG. 3B.
  • Step 401 The network side device sends second check information to the user equipment.
  • Step 402 The network side device receives the second cache reset information sent by the user equipment.
  • the second cache reset information is used to instruct the network side device to release or clear the compression cache of the network side device.
  • step 401 the second check information is used by the user equipment to determine whether the content of the decompressed cache in the user equipment is the same as the content of the compressed cache in the network side device.
  • step 402 when the user equipment determines that the decompression buffer of the user equipment is different from the compression buffer of the network side device, the network side device receives the second cache reset information sent by the user equipment.
  • the network side device sends the first cache reset information to the user equipment, where the network side device sends the first cache reset information by using a packet data convergence protocol (PDCP) data unit PDU.
  • PDCP packet data convergence protocol
  • PDCP packet data convergence protocol
  • the cache control method includes: when the user equipment supports the UDC, the network side device sends a UDC activation indication, activates or enables a dictionary indication, and activates or enables the Mth to the user equipment. At least one of the lexicon indications, where M is a positive integer greater than one.
  • the cache control method further includes: when the user equipment is in a connected state, the network side device sends UDC configuration information to the user equipment, where the UDC configuration information includes a UDC deactivation indication, a UDC dictionary.
  • the UDC configuration information includes a UDC deactivation indication, a UDC dictionary.
  • steps 301-303 and steps 401-402 of the cache control method applied to the network side device may be performed simultaneously, or steps 301-303 may be performed after steps 401-402, or steps 301-303 may be performed at steps 401-402. Executed before.
  • Some embodiments of the present disclosure also provide a cache control method.
  • the cache control method is used to establish consistent cached content between the network side device and the user equipment. Referring to FIG. 4A, the cache control method is applied to a user equipment, and the method includes steps 501-503.
  • Step 501 The user equipment sends first verification information to the network side device.
  • Step 502 The user equipment receives the first cache reset information from the network side device.
  • Step 503 The user equipment releases or empties the current compression cache of the user equipment according to the content of the first cache reset information.
  • step 501 the first check information is used by the network side device to determine whether the content of the compressed cache in the user equipment is the same as the content of the decompressed cache in the network side device.
  • step 502 when the network side device determines that the compression buffer of the user equipment is different from the decompression buffer of the network side device, the first cache reset information sent by the network side device to the user equipment is .
  • the cache control method further includes: the user equipment receiving, by the network side device, at least one of an uplink data compression UDC activation indication, an activation or activation of a dictionary indication, and activation or activation of an Mth dictionary indication, wherein The M is a positive integer greater than one.
  • the user equipment After the user equipment receives the UDC activation indication, the user equipment compares each packet data convergence protocol PDCP data packet with the content of the compression cache in the user equipment, and uses the compression The cached identifier replaces the original PDCP data packet to implement uplink data compression; if the user equipment receives the activation or enable dictionary indication, the user equipment stores the dictionary in the compression cache, and uses the dictionary in the compression cache to compress the host.
  • the first PDCP packet, the compression buffer is updated according to the continuous transmission of the transmitted data packet, and the subsequent data packet continues to be compressed by using the updated compression buffer; if the user equipment receives the activation or activation of the Mth dictionary indication, the user equipment will The first dictionary in the dictionary of the previously received network side device configuration is stored in the compression buffer, and the first PDCP packet in the host is compressed by the dictionary of the Mth number, and the compression buffer is updated according to the continuous transmission of the transmitted data packet. Subsequent packets continue to be compressed using the updated compression cache.
  • the user equipment receives UDC configuration information from the network side device when the user equipment is in a connected state, where the UDC configuration information includes one or more of the following information: UDC deactivation indication, UDC dictionary Reset indication, UDC dictionary reload indication.
  • the user equipment when the user equipment receives the UDC deactivation indication, the user equipment stops the UDC, and the subsequent packet data convergence protocol PDCP data packet does not adopt UDC compression; when the user equipment receives the UDC dictionary reset indication The user equipment clears the compression cache; and when the user equipment receives the UDC dictionary reload indication, the user equipment reloads the compression cache with a dictionary.
  • a compression cache may also be set in the network side device, and a decompression cache may also be set in the user equipment.
  • the cache control method applied to the user equipment of the present disclosure may further include steps 601-603.
  • Step 601 The user equipment receives the second verification information sent by the network side device, where the second verification information is used by the user equipment to determine the content of the decompression cache in the user equipment and the network side device. Is the content of the compressed cache in the same?
  • Step 602 The user equipment determines whether the content of the compression cache in the network side device is the same as the content of the decompression cache in the user equipment.
  • Step 603 When the content of the decompressed cache is different from the content of the compressed cache, the user equipment sends the second cache reset information to the network side device.
  • the user equipment may determine, according to the second check information, whether the content of the compressed cache in the network side device is the same as the content of the decompressed cache in the user equipment.
  • the second cache reset information is used to instruct the network side device to release or clear the compression cache of the network side device.
  • the user equipment sends the second cache reset information to the network side device, where the user equipment sends the second cache reset information by using a packet data convergence protocol (PDCP) data unit PDU.
  • PDCP packet data convergence protocol
  • steps 501-503 and steps 601-603 applied to the cache control method of the user equipment may be performed simultaneously, or steps 501-503 may be performed after steps 601-603, or steps 501-503 may be performed before steps 601-603. carried out.
  • the uplink data compression dictionary is activated and deactivated by the RRC message.
  • the UE When the UE has a service to initiate, the UE initiates a random access procedure, and the eNB configures and establishes a dedicated bearer for the UE, such as an SRB1 bearer or a QCI5 bearer.
  • the eNB (Base Station) acquires UE capability information from the MME (Mobility Management Entity), and the capability information includes an indication of whether the UE supports the UDC. If the UE supports UDC, the eNB sends an RRC Connection Reconfiguration message to the UE, including at least one of a UDC activation indication, an activation or activation of a dictionary indication, and activation or activation of an M-th dictionary indication.
  • MME Mobility Management Entity
  • the RRC Connection Reconfiguration message includes a UDC activation indication and an indication to activate or enable the dictionary, or includes a UDC activation indication and activation or activation of the Mth dictionary indication.
  • the indication to activate or enable the dictionary may indicate that an empty dictionary is enabled.
  • the UE After the UE receives the UDC activation indication, the UE starts the uplink data compression function for the current bearer, that is, compares each PDCP (Packet Data Convergence Protocol) data packet with the compression buffer in the UE, and uses the The compressed cache identifier replaces the original PDCP data packet to implement uplink data compression.
  • PDCP Packet Data Convergence Protocol
  • the UE may send the verification information to the eNB, and the verification information may be obtained by the data buffered in the compression buffer of the UE (such as a checksum obtained by partial data verification in the buffered data).
  • the check information is used by the decompressor of the eNB to determine whether the content of the compressed buffer of the UE is the same as the content of the decompressed cache of the eNB, and the decompression failure caused by the difference between the two is avoided. If the two are different, the eNB sends the cache reset information to the UE, so that the compression buffer of the UE is consistent with the decompression buffer of the eNB.
  • the cache reset information may be information indicating that the current compressed cache of the UE is released or the current compressed cache of the UE is cleared. After receiving the cache reset information, the UE may release or clear the current compression cache of the UE according to the content of the cache reset information.
  • the cache reset information can be sent through the PDCP PDU.
  • the UE If the UE receives the activation or enable dictionary indication, the UE stores the dictionary in the compression buffer, and uses the dictionary in the compression cache to compress the first PDCP packet in the host.
  • the compression cache can be updated based on the continuation of the transmitted packets, and the subsequent packets continue to be compressed using the updated compression cache.
  • the UE If the UE receives the activation or activation of the M-th dictionary command, the UE stores the M-th dictionary in the previously configured network configuration dictionary into the compression cache, and compresses the first PDCP in the host by using the M-th dictionary. package.
  • the compression cache can be updated based on the continuation of the transmitted packets, and subsequent packets continue to be compressed using the updated compression cache.
  • the eNB When the UE is in the connected state, the eNB sends UDC configuration information to the UE, which may include one or more of the following information: a UDC deactivation indication, a UDC dictionary reset indication, a UDC dictionary reload indication.
  • the UE After the UE receives the UDC deactivation indication, the UE stops UDC compression, and the subsequent PDCP data packets do not adopt UDC compression.
  • the UE clears the UDC compression buffer.
  • the UE After the UE receives the UDC dictionary reload indication, the UE reloads the UDC compression buffer with the dictionary.
  • the network side device activates and deactivates the uplink data compression dictionary through a PDCP PDU (Protocol Data Unit).
  • PDCP PDU Protocol Data Unit
  • the eNB transmits a PDCP PDU to the UE.
  • the PDCP PDU includes one or more of the following information:
  • UDC Activate or deactivate uplink data compression
  • 1 means start uplink data compression
  • 0 means stop uplink data compression, that is, deactivate uplink data compression.
  • the UE After receiving the PDCP PDU, the UE starts or stops the uplink data compression according to the value of the UDC field.
  • (2) PD Use a dictionary (predefined dictionary), 1 for loading the dictionary, and 0 for clearing the dictionary.
  • the UE After receiving the PDCP PDU, if the value of the PD field is 1, the UE loads the dictionary and compresses the first PDCP data packet with the buffer in which the dictionary is installed. If the value of the PD field is 0, the UE resets the compression buffer, that is, clears the compression buffer.
  • PD id Dictionary id (predefined dictionary identity), which may indicate the dictionary number used by the eNB to request the UE with more than 1 bit.
  • the eNB may send the PDCP PDU to the UE to stop the uplink data compression, that is, set the UDC field to 0, or modify the used dictionary, that is, fill in the 'PD id' field to fill in the new dictionary number to be enabled.
  • Figure 5B shows a schematic diagram of a PDCP Control PDU carrying a UDC feedback message, where FE indicates whether the checksum has an error, 0 indicates no error, and 1 indicates a checksum error.
  • FIG. 5C shows a schematic diagram of a PDCP data PDU of a 12-bit SN (Sequence Number) number.
  • the checksum indicates checksum information
  • the FU indicates whether UDC compression is used
  • the FR indicates whether the compression cache is reset.
  • FIG. 5D shows a schematic diagram of a PDCP data PDU of a 15-bit SN number.
  • the checksum indicates checksum information
  • the FU indicates whether UDC compression is used
  • the FR indicates whether the compression cache is reset.
  • Figure 5D shows a schematic diagram of a PDCP data PDU of 18 bit SN number.
  • the checksum indicates checksum information
  • the FU indicates whether UDC compression is used
  • the FR indicates whether the compression cache is reset.
  • the network side device activates or deactivates the uplink data compression dictionary by using a broadcast message.
  • Each of the DRBs has a corresponding QCI (QoS Class Identifier).
  • QCI QoS Class Identifier
  • the default bearer QIC 9 for the Internet service
  • the default bearer QCI 5 for the VoLTE service.
  • the uplink data compression is performed for a certain bearer.
  • the eNB broadcasts one or more of the following information in the system message:
  • the UE When the UE initiates the TAU, the UE reports that the network side device has the uplink data compression capability and/or the pre-storage dictionary capability, and the network side device sends the dictionary applicable to the current region to the UE, which may be the RRC connection reconfiguration in the TAU process.
  • the message is delivered, and the MME can also deliver the message to the UE through the NAS message.
  • the dictionary configured for the UE can be 1 dictionary or multiple dictionaries.
  • the UE may have a default dictionary built in when it leaves the factory.
  • the UE uses the configured dictionary for data compression when it enters the connected state next time. If the network side device does not configure a dictionary for the UE, the UE uses the default dictionary for data compression.
  • the network side device configures more than one dictionary for the UE, the network side will number each dictionary, the first dictionary, the second dictionary, the third dictionary, ..., and the UE stores the plurality of dictionaries.
  • the network side device can send the dictionary number through the system broadcast message, for example, the number 2, and the UE in the cell uses the corresponding dictionary for data compression, that is, the dictionary No. 2.
  • the network side device may also send the dictionary number to the UE through the RRC message, and the UE uses the corresponding dictionary for data compression.
  • the network side When the UE initiates the connection establishment request from the idle state, the network side sends an RRC reconfiguration message to the UE, including the uplink data compression indication, and the first message sent by the UE on the bearer is compressed by using the configured dictionary.
  • the UE When the UE enters another TA zone, the UE reports the cell or area identifier that has obtained the dictionary indication and/or has obtained the dictionary number and/or the dictionary. If the network side device sends a new dictionary for the UE, the UE will discard the previous storage. Dictionary; if the network side device does not issue a new dictionary for the UE, the UE continues to use the original dictionary.
  • the network side device sends a dictionary to the UE through RRC signaling.
  • the UE initiates a random access procedure and enters a connected state.
  • the network side establishes a QCI5 bearer for the UE through an RRC message, and the network side sends a dictionary to the UE through an RRC message.
  • the invite message is compressed by the dictionary, and the network side uses the dictionary to decompress the data packet.
  • the network side each time the UE enters the connected state, the network side sends a dictionary to the UE through an RRC message, and the dictionary is used only in the current connection process. The next time you enter the connected state, the network side will resend the new dictionary.
  • Some embodiments of the present disclosure also provide a network side device, as shown in FIG. 6, including a processor 61 and a transceiver 62.
  • the transceiver 62 is configured to notify the user equipment to activate, deactivate or reset the dictionary for uplink data compression.
  • the network side device can dynamically configure a dictionary for uplink data compression for the user equipment, and notify the user equipment to activate, deactivate, or reset the dictionary, and then the user equipment acquires the network device configured for the user equipment.
  • the uplink data compression dictionary, and the uplink data compression is performed according to the obtained dictionary of the network side device configuration.
  • the user equipment does not use the pre-stored static dictionary for uplink data compression, but uses the network side device dynamics.
  • the configured dictionary performs uplink data compression, which enables the network side to configure the most suitable dictionary for the UE.
  • the processor 61 is further configured to acquire capability information of the user equipment, where the capability information includes whether the user equipment supports uplink data compression, and is a user equipment when the user equipment supports uplink data compression. Configure a dictionary for upstream data compression.
  • the transceiver 62 is specifically configured to send a radio resource control RRC connection reconfiguration message to the user equipment, where the RRC connection reconfiguration message includes at least one of the following information: activating or enabling a dictionary indication;
  • the M indicator dictionary indication is enabled, wherein the Mth dictionary is one of a plurality of dictionaries pre-stored by the user equipment.
  • the transceiver 62 is further configured to send an RRC message to the user equipment, where the RRC message includes at least one of the following information: a dictionary deactivation or stop indication; a dictionary reset indication; an uplink data compression dictionary weight Carry instructions.
  • the transceiver 62 is specifically configured to send a packet data convergence protocol (PDCP) data unit PDU to the user equipment, where the PDU carries at least one of the following information: a dictionary deactivation or stop indication; activation or activation a dictionary indication; a dictionary reset indication; an identifier of one of the plurality of dictionaries pre-stored by the user equipment.
  • PDCP packet data convergence protocol
  • the transceiver 62 is specifically configured to send a system broadcast message, where the system broadcast message includes at least one of the following information: a dictionary deactivation or stop indication of a bearer with a scale value of N; a scale value of N The activation or enable dictionary indication of the bearer; the dictionary reset indication of the bearer with a scale value of N; the indication of the activation of the Mth dictionary of the bearer with the scale value of N, wherein the dictionary of the Mth is pre-processed for the user equipment One of the multiple dictionaries stored.
  • the system broadcast message includes at least one of the following information: a dictionary deactivation or stop indication of a bearer with a scale value of N; a scale value of N The activation or enable dictionary indication of the bearer; the dictionary reset indication of the bearer with a scale value of N; the indication of the activation of the Mth dictionary of the bearer with the scale value of N, wherein the dictionary of the Mth is pre-processed for the user equipment One of the multiple diction
  • Some embodiments of the present disclosure also provide a user equipment, as shown in FIG. 7, including a processor 71 and a transceiver 72.
  • the processor 71 is configured to activate, deactivate or reset a dictionary for uplink data compression according to an indication of the network side device.
  • the network side device can dynamically configure a dictionary for uplink data compression for the user equipment, and notify the user equipment to activate, deactivate, or reset the dictionary, and then the user equipment acquires the network device configured for the user equipment.
  • the dictionary of the uplink data compression and performs uplink data compression according to the obtained dictionary of the network side device configuration.
  • the user equipment does not use the pre-stored static dictionary for uplink data compression, but uses the dictionary dynamically configured by the network side device to perform uplink data compression, so that the network side can configure the most suitable dictionary for the UE.
  • the transceiver 72 is further configured to report the capability information of the user equipment to the network side device, where the capability information includes that the user equipment supports uplink data compression, and the acquiring network side device is configured for the user equipment.
  • a dictionary for upstream data compression is configured for the user equipment.
  • the transceiver 72 is specifically configured to receive a radio resource control RRC connection reconfiguration message sent by the network side device, where the RRC connection reconfiguration message includes at least one of the following information: activating or enabling a dictionary indication;
  • the M indicator dictionary indication is activated or enabled, wherein the Mth dictionary is one of a plurality of dictionaries pre-stored by the user equipment.
  • the processor When the activation or enable dictionary indication is included in the RRC connection reconfiguration message, the processor stores the dictionary in a compression buffer, and uses the dictionary to compress the first packet data convergence protocol PDCP in the current bearer. a packet; or when the RRC connection reconfiguration message includes the activation or activation of the Mth dictionary indication, the user equipment stores the M th dictionary of the plurality of pre-stored dictionaries in a compression buffer, and utilizes The Mth dictionary compresses the first PDCP packet in the current bearer.
  • the transceiver 72 is further configured to receive an RRC message sent by the network side device, where the RRC message includes at least one of the following information: a dictionary deactivation or stop indication; a dictionary reset indication; and an uplink data compression Dictionary overload indication.
  • the processor stops the uplink data compression function when the dictionary deactivation or stop indication is included in the RRC message; or the processor clears the uplink data when the dictionary reset indication is included in the RRC message a compressed compression buffer; or when the uplink data compression dictionary reload indication is included in the RRC message, the processor re-uses the dictionary to load a compression buffer of uplink data compression.
  • the transceiver 72 is specifically configured to receive a packet data convergence protocol PDCP protocol data unit PDU sent by the network side device, and activate or deactivate an uplink data compression dictionary according to the PDU, where the PDU carries the following At least one of the information: a dictionary deactivating or stopping the indication; activating or enabling the dictionary indication; a dictionary reset indication; and an identifier of one of the plurality of dictionaries pre-stored by the user equipment.
  • the transceiver 72 is specifically configured to receive a system broadcast message sent by the network side device, and activate or deactivate a bearer uplink data compression dictionary according to the system broadcast message, where the system broadcast message includes the following information. At least one of: a dictionary deactivation or stop indication of a bearer with a scale value of N; an activation or enable dictionary indication of a bearer with a scale value of N; a dictionary reset indication of a bearer with a scale value of N; a scale value An indication of activation of the Mth dictionary for the bearer of N, wherein the Mth dictionary is one of a plurality of dictionaries pre-stored by the user equipment.
  • Some embodiments of the present disclosure also provide a network side device including a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor implementing the program
  • the steps of the cache control method as described above All of the technical details and effects of the above cache control method applied to the network side device are applicable to the network side device mentioned in the present disclosure. Therefore, a detailed description of the network side device is omitted herein.
  • Some embodiments of the present disclosure also provide a user equipment including a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor executing the program as described above The steps of the cache control method. All of the above technical details and effects of the above cache control method applied to user equipment are applicable to the user equipment mentioned in the present disclosure. Therefore, a detailed description of the user equipment is omitted herein.
  • Some embodiments of the present disclosure also provide a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements steps in a dictionary configuration method or a cache control method as described above.
  • Computer readable media including both permanent and non-permanent, removable and non-removable media can be stored by any method or technology.
  • the information can be computer readable instructions, data structures, modules of programs, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory. (ROM), electrically erasable programmable read only memory (EEPROM), flash memory or other memory technology, compact disk read only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, Magnetic tape cartridges, magnetic tape storage or other magnetic storage devices or any other non-transportable media can be used to store information that can be accessed by a computing device.
  • computer readable media does not include temporary storage of computer readable media, such as modulated data signals and carrier waves.

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Abstract

本公开提供了一种字典配置方法、缓存控制方法、网络侧设备及用户设备。其中，应用于网络侧设备的缓存控制方法包括：网络侧设备接收用户设备发送的校验信息；网络侧设备判断用户设备中的压缩缓存的内容与网络侧设备中的解压缩缓存的内容是否相同；以及当压缩缓存的内容与解压缩缓存的内容不相同时，网络侧设备向用户设备发送缓存重置信息。

Description

字典配置方法、缓存控制方法、网络侧设备及用户设备
相关申请的交叉引用
本申请主张在2017年11月28日在中国提交的中国专利申请号No.201711215247.5的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及无线技术领域，特别是指一种字典配置方法、缓存控制方法、网络侧设备及用户设备。
背景技术
在进行数据传输时可以使用字典对数据进行压缩。数据压缩的目的是把需要传输的庞大数据根据字典压缩成短小数据，实现快速高效传输。UE(User Equipment，用户设备)预存一份字典，网络侧设备预存相同的字典，传输数据时，由于双方采用相同的字典，所以发送方用字典做数据压缩，接收方用相同的字典做数据解压缩。
发明内容
本公开要解决的技术问题是提供一种字典配置方法、缓存控制方法、网络侧设备及用户设备，能够使网络侧为UE配置最合适的字典。
第一方面，本公开提供一种缓存控制方法。所述缓存控制方法应用于网络侧设备，所述方法包括：网络侧设备接收用户设备发送的第一校验信息；所述网络侧设备判断所述用户设备中的压缩缓存的内容与所述网络侧设备中的解压缩缓存的内容是否相同；以及当所述压缩缓存的内容与所述解压缩缓存的内容不相同时，所述网络侧设备向所述用户设备发送第一缓存重置信息。
可选地，在所述网络侧设备接收所述用户设备发送的第一校验信息的步骤以前，所述缓存控制方法进一步包括：所述网络侧设备获取所述用户设备的能力信息，所述能力信息包括所述用户设备是否支持上行数据压缩UDC的指示。
可选地，所述第一缓存重置信息用于指示所述用户设备释放或清空所述用户设备的所述压缩缓存。
可选地，所述网络侧设备向所述用户设备发送第一缓存重置信息，包括：所述网络侧设备通过分组数据汇聚协议PDCP协议数据单元PDU发送所述第一缓存重置信息。
可选地，所述缓存控制方法进一步包括：当所述用户设备支持所述UDC时，那么所述网络侧设备向所述用户设备发送UDC激活指示、激活或启用字典指示、和激活或启用第M号字典指示中的至少一个，其中M是大于1的正整数。
可选地，所述缓存控制方法进一步包括：在所述用户设备处于连接态时，所述网络侧设备向所述用户设备发送UDC配置信息，所述UDC配置信息包括UDC去激活指示、UDC字典重置指示、UDC字典重载指示中的一个或多个。
可选地，所述缓存控制方法进一步包括：所述网络侧设备向所述用户设备发送第二校验信息；所述网络侧设备接收所述用户设备发送的第二缓存重置信息，所述第二缓存重置信息用于指示所述网络侧设备释放或清空所述网络侧设备中的压缩缓存。
第二方面，本公开提供一种缓存控制方法。所述缓存控制方法应用于用户设备，所述方法包括：所述用户设备向所述网络侧设备发送第一校验信息；所述用户设备从所述网络侧设备接收第一缓存重置信息；以及根据所述第一缓存重置信息的内容，释放或清空所述用户设备的当前压缩缓存。
可选地，所述缓存控制方法进一步包括：所述用户设备从所述网络侧设备接收上行数据压缩UDC激活指示、激活或启用字典指示、和激活或启用第M号字典指示中的至少一个，其中所述M是大于1的正整数。
可选地，在所述用户设备接收到所述UDC激活指示后，所述用户设备将每个分组数据汇聚协议PDCP数据包与所述用户设备中的所述压缩缓存的内容做比较，并且用该压缩缓存的标识替代原PDCP数据包，实现上行数据压缩；若用户设备收到了激活或启用字典指示，则所述用户设备将字典存入压 缩缓存中，用该压缩缓存中的字典来压缩本承载内第一个PDCP包，该压缩缓存依据已传数据包的持续进行更新，后续的数据包使用更新后的压缩缓存继续压缩；若用户设备收到了激活或启用第M号字典指示，则用户设备将之前接收到的网络侧设备配置的字典中第M号字典存入压缩缓存中，用该第M号字典压缩本承载内的第一个PDCP包，该压缩缓存依据已传数据包的持续进行更新，后续的数据包使用更新后的压缩缓存继续压缩。
可选地，在所述用户设备处于连接态时，所述用户设备从所述网络侧设备接收UDC配置信息，其中所述UDC配置信息包含如下信息的一种或多种：UDC去激活指示、UDC字典重置指示、UDC字典重载指示。
可选地，当所述用户设备收到UDC去激活指示时，所述用户设备停止UDC，并且后续的分组数据汇聚协议PDCP数据包不采用UDC压缩；当所述用户设备收到UDC字典重置指示时，所述用户设备清空所述压缩缓存；以及当所述用户设备收到UDC字典重载指示时，所述用户设备重新用字典装载所述压缩缓存。
可选地，所述缓存控制方法进一步包括：所述用户设备接收所述网络侧设备发送第二校验信息；所述用户设备判断所述用户设备中的解压缩缓存的内容与所述网络侧设备中的压缩缓存的内容是否相同；以及当所述网络侧设备的压缩缓存的内容与所述用户设备的解压缩缓存的内容不相同时，所述用户设备向所述网络侧设备发送第二缓存重置信息。
可选地，所述第二缓存重置信息用于指示所述网络侧设备释放或清空所述网络侧设备的所述压缩缓存。
第三方面，本公开提供一种字典配置方法。该字典配置方法应用于网络侧设备，所述方法包括：所述网络侧设备为用户设备配置用于上行数据压缩的字典；以及所述网络侧设备向所述用户设备通知所述用于上行数据压缩的字典。
可选地，，所述网络侧设备向所述用户设备通知所述用于上行数据压缩的字典，包括：所述网络侧设备通知用户设备激活、或去激活、或重置用于上行数据压缩的字典；或者所述网络侧设备向所述用户设备发送字典。
可选地，在所述网络侧设备为用户设备配置用于上行数据压缩的字典以前，所述方法还包括：所述网络侧设备获取所述用户设备的能力信息，所述能力信息包括所述用户设备是否支持上行数据压缩；以及在所述用户设备支持上行数据压缩时，所述网络侧设备为用户设备配置用于上行数据压缩的字典。
可选地，所述网络侧设备通知所述用户设备激活、或去激活、或重置用于上行数据压缩的字典包括：所述网络侧设备向所述用户设备发送无线资源控制RRC连接重配置消息，所述RRC连接重配置消息包括以下信息中的至少一种：激活或启用字典指示；激活或启用第M号字典指示，其中，第M号字典为所述用户设备预存储的多个字典中的一个，M代表正整数。
可选地，所述网络侧设备向用户设备通知用于数据压缩的字典步骤以后，所述方法还包括：所述网络侧设备向所述用户设备发送RRC消息，所述RRC消息包括以下信息中的至少一种：字典去激活或停止指示；字典重置指示；和上行数据压缩字典重载指示。
可选地，所述网络侧设备通知所述用户设备激活、或去激活、或重置用于上行数据压缩的字典，包括：所述网络侧设备向所述用户设备发送分组数据汇聚协议PDCP协议数据单元PDU，所述PDU中携带有以下信息的至少一种：字典去激活或停止指示；激活或启用字典指示；字典重置指示；和所述用户设备预存储的多个字典中，其中一个字典的标识。
可选地，所述网络侧设备通知所述用户设备激活、或去激活、或重置用于上行数据压缩的字典包括：所述网络侧设备发送系统广播消息，所述系统广播消息中包括以下信息的至少一种：标度值为N的承载的字典去激活或停止指示；标度值为N的承载的激活或启用字典指示；标度值为N的承载的字典重置指示；标度值为N的承载的激活第M号字典的指示，其中，第M号字典为所述用户设备预存储的多个字典中的一个。
第四方面，本公开提供一种字典配置方法。该方法应用于用户设备，所述方法包括：所述用户设备从网络侧设备获取指示或者字典；以及所述用户设备根据网络侧设备的指示激活、或去激活、或重置用于上行数据压缩的字 典。
可选地，所述用户设备从网络侧设备获取指示或者字典之前，所述方法还包括：所述用户设备在进行跟踪区更新时，向所述网络侧设备上报所述用户设备的能力信息，所述能力信息包括所述用户设备支持上行数据压缩。
可选地，所述用户设备从网络侧设备获取指示，包括：所述用户设备接收所述网络侧设备发送的无线资源控制RRC连接重配置消息，所述RRC连接重配置消息包括以下信息中的至少一种：激活或启用字典指示；激活或启用第M号字典指示，其中，第M号字典为所述用户设备预存储的多个字典中的一个，M是正整数。
可选地，在所述RRC连接重配置消息中包括所述激活或启用字典指示时，所述用户设备将所述字典存入压缩缓存中，利用所述字典来压缩当前承载内第一个分组数据汇聚协议PDCP包；或在所述RRC连接重配置消息中包括所述激活或启用第M号字典指示时，所述用户设备将预存储的多个字典中的第M号字典存入压缩缓存中，利用所述第M号字典压缩当前承载内第一个PDCP包。
可选地，所述用户设备从网络侧设备获取指示，包括：所述用户设备接收所述网络侧设备发送的RRC消息，所述RRC消息包括以下信息中的至少一种：字典去激活或停止指示；字典重置指示；上行数据压缩字典重载指示。
可选地，在所述RRC消息中包括所述字典去激活或停止指示时，所述用户设备停止上行数据压缩功能；或在所述RRC消息中包括所述字典重置指示时，所述用户设备清空上行数据压缩的压缩缓存；或在所述RRC消息中包括所述上行数据压缩字典重载指示时，所述用户设备重新利用所述字典装载上行数据压缩的压缩缓存。
可选地，所述用户设备从网络侧设备获取指示，包括：所述用户设备接收所述网络侧设备发送的分组数据汇聚协议PDCP协议数据单元PDU，并根据所述PDU激活或去激活上行数据压缩字典，所述PDU中携带有以下信息的至少一种：字典去激活或停止指示；激活或启用字典指示；字典重置指示；所述用户设备预存储的多个字典中，其中一个字典的标识。
可选地，所述用户设备从网络侧设备获取指示，包括：所述用户设备接收所述网络侧设备发送的系统广播消息，并根据所述系统广播消息激活或去激活承载的上行数据压缩字典，所述系统广播消息中包括以下信息的至少一种：标度值为N的承载的字典去激活或停止指示；标度值为N的承载的激活或启用字典指示；标度值为N的承载的字典重置指示；标度值为N的承载的激活第M号字典的指示，其中，第M号字典为所述用户设备预存储的多个字典中的一个。
第五方面，本公开提供一种网络侧设备，该设备包括：处理器、收发器和解压缩缓存，其中，所述收发器配置为接收用户设备发送的第一校验信息；所述处理器配置为：判断所述用户设备中的压缩缓存的内容与所述解压缩缓存的内容是否相同；以及当所述压缩缓存的内容与所述解压缩缓存的内容不相同时，通过所述收发器向所述用户设备发送第一缓存重置信息。
可选地，所述收发器进一步配置为，在所述收发器接收所述用户设备发送的第一校验信息以前，获取所述用户设备的能力信息，所述能力信息包括所述用户设备是否支持上行数据压缩UDC的指示。
可选地，所述第一缓存重置信息用于指示所述用户设备释放或清空所述用户设备的所述压缩缓存。
可选地，所述收发器进一步配置为通过分组数据汇聚协议PDCP协议数据单元PDU发送所述第一缓存重置信息。
可选地，所述收发器进一步配置为：当所述用户设备支持所述UDC时，向所述用户设备发送UDC激活指示、激活或启用字典指示、和激活或启用第M号字典指示中的至少一个，其中M是大于1的正整数。
可选地，所述收发器进一步配置为：在所述用户设备处于连接态时，向所述用户设备发送UDC配置信息，所述UDC配置信息包括UDC去激活指示、UDC字典重置指示、UDC字典重载指示中的一个或多个。
可选地，所述网络侧设备进一步包括压缩缓存，并且所述处理器进一步配置为：通过所述收发器向所述用户设备发送第二校验信息；以及通过所述收发器接收所述用户设备发送的第二缓存重置信息，其中，所述第二缓存重 置信息用于指示所述网络侧设备释放或清空所述网络侧设备的所述压缩缓存。
第六方面，本公开提供一种用户设备，该设备包括：处理器、收发器和压缩缓存；其中，所述收发器配置为向网络侧设备发送第一校验信息以及从所述网络侧设备接收第一缓存重置信息，所述处理器配置为根据所述第一缓存重置信息的内容，释放或清空所述用户设备的所述压缩缓存。
可选地，所述收发器进一步配置为：从所述网络侧设备接收上行数据压缩UDC激活指示、激活或启用字典指示、和激活或启用第M号字典指示中的至少一个，其中所述M是大于1的正整数。
可选地，在所述收发器接收到所述UDC激活指示后，所述处理器将每个分组数据汇聚协议PDCP数据包与所述用户设备中的所述压缩缓存的内容做比较，并且用该压缩缓存的标识替代原PDCP数据包，实现上行数据压缩；若所述收发器收到了激活或启用字典指示，则所述处理器将字典存入压缩缓存中，用该压缩缓存中的字典来压缩本承载内第一个PDCP包，该压缩缓存依据已传数据包的持续进行更新，后续的数据包使用更新后的压缩缓存继续压缩；若所述收发器收到了激活或启用第M号字典指示，则所述处理器将之前接收到的网络侧设备配置的字典中第M号字典存入压缩缓存中，用该第M号字典压缩本承载内的第一个PDCP包，所述压缩缓存依据已传数据包的持续进行更新，后续的数据包使用更新后的压缩缓存继续压缩。
可选地，在所述用户设备处于连接态时，所述收发器从所述网络侧设备接收UDC配置信息，其中所述UDC配置信息包含如下信息的一种或多种：UDC去激活指示、UDC字典重置指示、UDC字典重载指示。
可选地，当所述收发器收到UDC去激活指示时，所述处理器停止UDC，并且后续的分组数据汇聚协议PDCP数据包不采用UDC压缩；当所述收发器收到UDC字典重置指示时，所述处理器清空所述压缩缓存；以及当所述收发器收到UDC字典重载指示时，所述处理器重新用字典装载所述压缩缓存。
可选地，所述用户设备进一步包括解压缩缓存，所述收发器进一步配置为接收所述网络侧设备发送第二校验信息；
所述处理器进一步配置为判断所述用户设备中的解压缩缓存的内容与所 述网络侧设备中的压缩缓存的内容是否相同；以及当所述用户设备中的解压缩缓存的内容与所述网络侧设备中的压缩缓存的内容不相同时，通过所述收发器向所述网络侧设备发送第二缓存重置信息。
第七方面，本公开提供一种网络侧设备，该设备包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序；其中，所述处理器执行所述程序时，所述处理器实现第一方面所述的缓存控制方法。
第八方面，本公开提供一种用户设备，该设备包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序；其中，所述处理器执行所述程序时，所述处理器实现如第二方面所述的缓存控制方法。
第九方面，本公开提供一种非易失性的计算机可读存储介质，其上存储有计算机程序，其中，该程序被处理器执行时实现如第一放米娜所述的缓存控制方法中的步骤或实现如第二方面所述的缓存控制方法中的步骤。
本公开的一些实施例具有以下有益效果：
上述方案中，网络侧设备能够为用户设备动态配置用于上行数据压缩的字典，并通知所述用户设备激活、或去激活、或重置所述字典，之后用户设备根据获取的网络侧设备配置的字典进行上行数据压缩，本公开的技术方案中，用户设备并不是采用预存的静态字典来进行上行数据压缩，而是利用网络侧设备动态配置的字典进行上行数据压缩，能够使网络侧为UE配置最合适的字典。
附图说明
图1为本公开的一些实施例应用于网络侧设备的字典配置方法的流程示意图；
图2为本公开的一些实施例应用于用户设备的字典配置方法的流程示意图；
图3A和3B为本公开的一些实施例应用于网络侧设备的缓存控制方法的流程示意图；
图4A和4B为本公开的一些实施例应用于用户设备的缓存控制方法的流程示意图；
图5A-5E为本公开的一些实施例PDCP PDU的结构示意图；
图6为本公开的一些实施例网络侧设备的结构示意图；以及
图7为本公开的一些实施例用户设备的结构示意图。
具体实施方式
为使本公开的一些实施例要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。
相关技术中在用户设备(User Equipment，UE)和网络侧设备中预存相同的静态字典，以在数据传输时使用该静态字典进行数据压缩和解压缩。相同的静态字典的缺点是不够灵活。由于网络中的不同区域使用的字典可能不一样，同一区域不同时间段使用的字典也会有变化，所以预存的静态字典不能保证为UE配置最合适的字典。
本公开的一些实施例提供一种字典配置方法、缓存控制方法、网络侧设备及用户设备。本公开的一些实施例能够使网络侧设备为UE配置最合适的用于上行数据压缩(Uplink Data Compression，UDC)的字典。
本公开的一些实施例提供一种字典配置方法，该方法应用于网络侧设备，如图1所示，所述方法包括步骤101-102。
步骤101：所述网络侧设备为用户设备配置用于上行数据压缩的字典。
步骤102：所述网络侧设备向所述用户设备通知所述用于上行数据压缩的字典。
在本公开中，网络侧设备能够为用户设备动态配置用于上行数据压缩的字典，并向所述用户设备通知所述网络侧设备配置的字典。从而，用户设备可以获取网络侧设备为所述用户设备配置的用于上行数据压缩的字典，并且根据获取到的网络侧设备配置的字典进行上行数据压缩。
在本公开的技术方案中，用户设备并不是采用预存的静态字典来进行上行数据压缩，而是利用网络侧设备动态配置的字典进行上行数据压缩，能够使网络侧为UE配置最合适的字典。
在本公开中，网络侧设备可以是基站。待压缩的数据可以是VoLTE(Voice  over LTE，基于IMS(IP Multimedia Subsystem)的语音业务)呼叫的SIP(Session Initiation Protocol，会话初始协议)信令(如第一条SIP信令invite)，可以是HTTP(HyperText Transfer Protocol，超文本传输协议)网页请求，可以是FTP(File Transfer Protocol，文件传输协议)数据包等等。
网络侧设备可以为UE配置一个字典；网络侧设备通知UE激活该字典做上行数据压缩；然后UE根据网络侧设备的通知采用该配置的字典做上行数据压缩。或者，网络侧设备可以为UE预配置多个字典并且UE存储该多个字典；网络侧设备通过广播消息向UE广播本小区使用的字典号，或通过RRC(Radio Resource Control，无线资源控制)消息向UE发送字典号；然后UE根据接收到的网络侧设备发送的字典号，从预配置的多个字典中选择与该字典号对应的字典进行上行数据压缩。
如果网络侧设备未为UE配置字典，那么网络侧设备通知UE激活字典做上行数据压缩；然后，UE可以使用UE保存的默认的字典做上行数据压缩。
其中，所述网络侧设备向用户设备通知用于数据压缩的字典的步骤可以包括：所述网络侧设备通知所述用户设备激活、或去激活、或重置用于上行数据压缩的字典；或者所述网络侧设备向所述用户设备发送字典。
可选地，在所述网络侧设备为用户设备配置用于上行数据压缩的字典以前，所述方法还包括：所述网络侧设备获取所述用户设备的能力信息，所述能力信息包括所述用户设备是否支持上行数据压缩UDC。所述网络侧设备为用户设备配置用于上行数据压缩的字典具体包括：在所述用户设备支持上行数据压缩时，所述网络侧设备为用户设备配置用于上行数据压缩的字典。
一种可行的字典更新时机是，当UE下一次到一个新的TA(Tracking area，跟踪区)需要做TAU(Tracking area update，跟踪区更新)时，UE向网络侧设备上报UE已获取字典和上次获取字典的小区标识或区域标识。网络侧设备向UE下发新的字典，或者网路侧设备不向UE下发字典，UE仍用原字典。当然，也可以在UE每次进入连接态时都核对一下字典或者网络侧设备向UE下发新的字典。
网络侧设备会给UE配置TA list(Tracking area list，跟踪区小区列表)，当 UE进入一个新小区，且小区广播的TAC(Tracking area code，跟踪区编码)不在TA list里时，UE会发起TAU。UE向网络侧设备发送上行RRC消息，该消息中可以包含NAS(Network Access Server，网络接入服务器)层TAU信息、UDC(uplink data compression,上行数据压缩)信息。其中UDC信息可以包含以下信息的一种或多种：UE支持UDC的状态信息，UE支持的字典的信息，字典识别号。
其中UE支持UDC的状态信息用于告知网络侧设备UE对UDC的支持状态，UE支持的字典的信息用于网络侧设备获知UE可以支持的字典(即，UE可以被配置的字典)，字典识别号用于网络侧设备获知UE当前已储存的字典。
可选地，所述网络侧设备通知所述用户设备激活、或去激活或重置用于上行数据压缩的字典包括：所述网络侧设备向所述用户设备发送无线资源控制RRC连接重配置消息。所述RRC连接重配置消息包括以下指示中的至少一个：激活或启用字典的指示；和，激活或启用第M号字典的指示。
其中，激活或启用字典指开始使用字典，该字典是网络侧设备通知给用户设备用于上行数据压缩的字典。在激活或启用第M号字典的指示中，第M号字典为所述用户设备预存储的多个字典中的一个，其中M代表正整数。
可选地，RRC连接重配置消息中还可以包括上行数据压缩激活指示。该上行数据压缩激活指示用于指示用户设备开启上行数据压缩功能。
可选地，所述网络侧设备向用户设备通知用于数据压缩的字典步骤以后，所述方法还包括：所述网络侧设备向所述用户设备发送RRC消息，所述RRC消息包括以下指示中的至少一个：字典去激活或停止指示、字典重置指示和上行数据压缩字典重载指示。
其中，去激活或停止指示指停止使用字典进行上行数据压缩。
可选地，RRC消息中还可以包括上行数据压缩去激活指示。该上行数据压缩去激活指示用于指示用户设备停止上行数据压缩功能。
可选地，所述网络侧设备通知所述用户设备激活、或去激活或重置用于上行数据压缩的字典，包括：所述网络侧设备向所述用户设备发送分组数据 汇聚协议PDCP协议数据单元PDU。所述PDU中携带有以下信息的至少一种：字典去激活或停止指示、激活或启用字典指示、激活或启用第M号字典的指示、字典重置指示和上行数据压缩字典重载指示。
可选地，PDCP PDU中还可以包括上行数据压缩激活指示。该上行数据压缩激活指示用于指示用户设备开启上行数据压缩功能。
可选地，所述网络侧设备通知所述用户设备激活、或去激活或重置用于上行数据压缩的字典，包括：所述网络侧设备发送系统广播消息。所述系统广播消息中包括以下信息的至少一种：标度值为N的承载的字典去激活或停止指示；标度值为N的承载的激活或启用字典指示；标度值为N的承载的字典重置指示；标度值为N的承载的激活第M号字典的指示。其中，第M号字典为所述用户设备预存储的多个字典中的一个，其中N是正整数。
可选地，系统广播消息中还可以包括标度值为N的承载的上行数据压缩激活指示。该上行数据压缩激活指示用于指示标度值为N的承载启动上行数据压缩功能。
本公开的一些实施例还提供了一种字典配置方法。该字典配置方法应用于用户设备。如图2所示，所述方法包括步骤201-步骤202。
步骤201：所述用户设备从网络侧设备获取指示或者字典。
步骤202：所述用户设备根据网络侧设备的指示激活、或去激活、或重置用于上行数据压缩的字典。
网络侧设备能够为用户设备动态配置用于上行数据压缩的字典，并向所述用户设备通知所述网络侧设备配置的字典。根据网络侧设备的通知，用户设备可以激活、去激活或重置所述字典。从而，用户设备可以获取网络侧设备为所述用户设备配置的用于上行数据压缩的字典，并且根据获取的网络侧设备配置的字典进行上行数据压缩。
本公开的技术方案中，用户设备并不是采用预存的静态字典来进行上行数据压缩，而是利用网络侧设备动态配置的字典进行上行数据压缩，能够使网络侧为UE配置最合适的字典。
可选地，所述用户设备从网络侧设备获取指示或者字典之前，所述方法 还包括：所述用户设备在进行跟踪区更新时，向所述网络侧设备上报所述用户设备的能力信息，其中所述能力信息包括所述用户设备支持上行数据压缩。然后，所述用户设备根据网络侧设备的指示激活、或去激活或重置用于上行数据压缩的字典。
可选地，所述用户设备从网络侧设备获取指示包括：所述用户设备接收所述网络侧设备发送的无线资源控制RRC连接重配置消息。所述RRC连接重配置消息包括以下信息中的至少一种：激活或启用字典指示；激活或启用第M号字典指示。其中，第M号字典为所述用户终端用户设备预存储的多个字典中的一个，M是正整数。
在所述RRC连接重配置消息中包括所述激活或启用字典指示时，所述用户设备将所述字典存入压缩缓存中，利用所述字典来压缩当前承载内第一个分组数据汇聚协议PDCP包；或，在所述RRC连接重配置消息中包括所述激活或启用第M号字典指示时，所述用户设备将预存储的多个字典中的第M号字典存入压缩缓存中，并利用所述第M号字典压缩当前承载内第一个PDCP包。本公开中提到的压缩缓存可以是用户设备中为压缩操作而分配的专门的物理缓存或者虚拟缓存。
可选地，RRC连接重配置消息中还可以包括上行数据压缩激活指示。该上行数据压缩激活指示用于指示用户设备开启上行数据压缩功能。
可选地，所述用户设备从网络侧设备获取指示，包括：所述用户设备接收所述网络侧设备发送的RRC消息，所述RRC消息包括以下信息中的至少一种：字典去激活或停止指示；字典重置指示；上行数据压缩字典重载指示。
在所述RRC消息中包括所述字典去激活或停止指示时，所述用户设备停止上行数据压缩功能；或在所述RRC消息中包括所述字典重置指示时，所述用户设备清空用于上行数据压缩的压缩缓存；或在所述RRC消息中包括所述上行数据压缩字典重载指示时，所述用户设备重新利用所述字典装载用于上行数据压缩的压缩缓存。
可选地，RRC消息中还可以包括上行数据压缩去激活指示。该上行数据压缩去激活指示用于指示用户设备停止上行数据压缩功能。
可选地，所述用户设备从网络侧设备获取指示，包括：所述用户设备接收所述网络侧设备发送的分组数据汇聚协议PDCP协议数据单元PDU，并根据所述PDU激活或去激活上行数据压缩字典。所述PDU中携带有以下信息的至少一种：字典去激活或停止指示；激活或启用字典指示；字典重置指示；所述用户设备预存储的多个字典中，其中一个字典的标识。
可选地，所述用户设备从网络侧设备获取指示，包括：所述用户设备接收所述网络侧设备发送的系统广播消息。所述UE根据所述系统广播消息激活或去激活用于上行数据压缩的字典。所述系统广播消息中包括以下信息的至少一种：标度值为N的承载的字典去激活或停止指示；标度值为N的承载的激活或启用字典指示；标度值为N的承载的字典重置指示；标度值为N的承载的激活第M号字典的指示，其中，第M号字典为所述用户设备预存储的多个字典中的一个。其中N是正整数。
本公开的一些实施例还提供一种缓存控制方法。该缓存控制方法用于在网络侧设备和用户设备之间建立一致的缓存内容。所述缓存控制方法应用于网络侧设备，所述方法包括步骤301-303，如图3A所示。
步骤301：网络侧设备接收用户设备发送的第一校验信息。
步骤302：所述网络侧设备判断所述用户设备中的压缩缓存的内容与所述网络侧设备中的解压缩缓存的内容是否相同。
步骤303：当所述压缩缓存的内容与所述解压缩缓存的内容不相同时，所述网络侧设备向所述用户设备发送第一缓存重置信息。
其中，所述第一缓存重置信息用于指示所述用户设备释放或清空所述用户设备的所述压缩缓存。
在步骤302中，所述网络侧设备可以根据第一校验信息判断所述用户设备中的压缩缓存的内容与所述网络侧设备中的解压缩缓存的内容是否相同。
可选地，在所述网络侧设备接收所述用户设备发送的第一校验信息的步骤301以前，所述缓存控制方法进一步包括：所述网络侧设备获取所述用户设备的能力信息，所述能力信息包括所述用户设备是否支持上行数据压缩UDC的指示。例如，网络侧设备可以从核心网设备获取所述用户设备的能力 信息，或者用户设备可以把用户设备的能力信息上报给网络侧设备。
可选地，所述网络侧设备中也可以设置压缩缓存，所述用户设备中也可以设置解压缩缓存。所述缓存控制方法还可以包括步骤401-403，如图3B所示。
步骤401：所述网络侧设备向所述用户设备发送第二校验信息。
步骤402：所述网络侧设备接收所述用户设备发送的第二缓存重置信息。
所述第二缓存重置信息用于指示所述网络侧设备释放或清空所述网络侧设备的所述压缩缓存。
在步骤401中，所述第二校验信息由所述用户设备用于确定所述用户设备中的解压缩缓存的内容与所述网络侧设备中的压缩缓存的内容是否相同。
在步骤402中，当所述用户设备确定所述用户设备的解压缩缓存与所述网络侧设备的压缩缓存不同时，所述网络侧设备接收所述用户设备发送的第二缓存重置信息。
其中，所述网络侧设备向所述用户设备发送第一缓存重置信息，包括：所述网络侧设备通过分组数据汇聚协议PDCP协议数据单元PDU发送所述第一缓存重置信息。
其中，所述网络侧设备接收所述用户设备发送的第二缓存重置信息，包括：所述网络侧设备通过接收分组数据汇聚协议PDCP协议数据单元PDU来接收所述用户设备发送的所述第二缓存重置信息。
可选地，所述缓存控制方法包括：当所述用户设备支持所述UDC时，那么所述网络侧设备向所述用户设备发送UDC激活指示、激活或启用字典指示、和激活或启用第M号字典指示中的至少一个，其中M是大于1的正整数。
可选地，所述缓存控制方法进一步包括：在所述用户设备处于连接态时，所述网络侧设备向所述用户设备发送UDC配置信息，所述UDC配置信息包括UDC去激活指示、UDC字典重置指示、UDC字典重载指示中的一个或多个。
可以理解，上面应用于网络侧设备的缓存控制方法的步骤301-303和步骤401-402可以同时执行，或者步骤301-303在步骤401-402之后执行，或者 步骤301-303在步骤401-402之前执行。
本公开的一些实施例还提供一种缓存控制方法。该缓存控制方法用于在网络侧设备和用户设备之间建立一致的缓存内容。参考图4A，所述缓存控制方法应用于用户设备，所述方法包括步骤501-503。
步骤501：所述用户设备向所述网络侧设备发送第一校验信息。
步骤502：所述用户设备从所述网络侧设备接收所述第一缓存重置信息。
步骤503：所述用户设备根据所述第一缓存重置信息的内容，释放或清空所述用户设备的当前压缩缓存。
在步骤501中，所述第一校验信息由所述网络侧设备用于确定所述用户设备中的压缩缓存的内容与所述网络侧设备中的解压缩缓存的内容是否相同。
在步骤502中，当所述网络侧设备确定所述用户设备的压缩缓存与所述网络侧设备的解压缩缓存不同时，所述网络侧设备向所述用户设备发送的第一缓存重置信息。
可选地，该缓存控制方法进一步包括：所述用户设备从所述网络侧设备接收上行数据压缩UDC激活指示、激活或启用字典指示、和激活或启用第M号字典指示中的至少一个，其中所述M是大于1的正整数。
其中，在所述用户设备接收到所述UDC激活指示后，所述用户设备将每个分组数据汇聚协议PDCP数据包与所述用户设备中的所述压缩缓存的内容做比较，并且用该压缩缓存的标识替代原PDCP数据包，实现上行数据压缩；若用户设备收到了激活或启用字典指示，则所述用户设备将字典存入压缩缓存中，用该压缩缓存中的字典来压缩本承载内第一个PDCP包，该压缩缓存依据已传数据包的持续进行更新，后续的数据包使用更新后的压缩缓存继续压缩；若用户设备收到了激活或启用第M号字典指示，则用户设备将之前接收到的网络侧设备配置的字典中第M号字典存入压缩缓存中，用该第M号字典压缩本承载内的第一个PDCP包，该压缩缓存依据已传数据包的持续进行更新，后续的数据包使用更新后的压缩缓存继续压缩。
其中，在所述用户设备处于连接态时，所述用户设备从所述网络侧设备接收UDC配置信息，其中所述UDC配置信息包含如下信息的一种或多种： UDC去激活指示、UDC字典重置指示、UDC字典重载指示。
其中，当所述用户设备收到UDC去激活指示时，所述用户设备停止UDC，并且后续的分组数据汇聚协议PDCP数据包不采用UDC压缩；当所述用户设备收到UDC字典重置指示时，所述用户设备清空所述压缩缓存；以及当所述用户设备收到UDC字典重载指示时，所述用户设备重新用字典装载所述压缩缓存。
可选地，所述网络侧设备中也可以设置压缩缓存，所述用户设备中也可以设置解压缩缓存。参考图4B，本公开的应用于用户设备的缓存控制方法还可以包括步骤601-603。
步骤601：用户设备接收网络侧设备发送的第二校验信息，其中所述第二校验信息由所述用户设备用于确定所述用户设备中的解压缩缓存的内容与所述网络侧设备中的压缩缓存的内容是否相同。
步骤602：所述用户设备判断所述网络侧设备中的压缩缓存的内容与所述用户设备中的解压缩缓存的内容是否相同。
步骤603：当所述解压缩缓存的内容与所述压缩缓存的内容不相同时，所述用户设备向所述网络侧设备发送第二缓存重置信息。
在步骤602中，所述用户设备可以根据第二校验信息判断所述网络侧设备中的压缩缓存的内容与所述用户设备中的解压缩缓存的内容是否相同
其中，所述第二缓存重置信息用于指示所述网络侧设备释放或清空所述网络侧设备的所述压缩缓存。
其中，所述用户设备向所述网络侧设备发送第二缓存重置信息，包括：所述用户设备通过分组数据汇聚协议PDCP协议数据单元PDU发送所述第二缓存重置信息。
可以理解，上面应用于用户设备的缓存控制方法的步骤501-503和步骤601-603可以同时执行，或者步骤501-503在步骤601-603之后执行，或者步骤501-503在步骤601-603之前执行。
下面结合具体的实例对本公开的技术方案进行详细介绍：
第一实例
本实例中，通过RRC消息激活以及去激活上行数据压缩字典。
当UE有业务要发起时，UE发起随机接入过程，eNB为UE配置并建立专用承载，例如SRB1承载或QCI5承载。eNB(基站)从MME(Mobility Management Entity，移动性管理实体)获取UE能力信息，能力信息中包含UE是否支持UDC的指示。如果UE支持UDC，则eNB向UE发送RRC连接重配置消息，其中包含UDC激活指示、激活或启用字典指示以及激活或启用第M号字典指示中的至少一个。例如，该RRC连接重配置消息包括UDC激活指示和激活或启用字典的指示，或者包括UDC激活指示和激活或启用第M号字典指示。可选地，该激活或启用字典的指示可以指示启用空的字典。
在UE接收到UDC激活指示后，UE为当前承载启动上行数据压缩功能，即，将每个PDCP((Packet Data Convergence Protocol，分组数据汇聚协议)数据包与UE中的压缩缓存做比较，用该压缩缓存的标识替代原PDCP数据包，实现上行数据压缩。
UE可以向eNB发送校验信息，校验信息可以通过UE的压缩缓存中缓存的数据获得(如缓存的数据中部分数据校验得到的校验和)。该校验信息用于eNB的解压缩器判断UE的压缩缓存的内容与eNB的解压缩缓存的内容是否相同，避免二者不同而导致的解压缩失败。如果二者不同，则eNB向UE发送缓存重置信息，使得UE的压缩缓存与eNB的解压缩缓存保持一致。缓存重置信息可以是指示释放UE的当前压缩缓存或清空UE的当前压缩缓存的信息。所述UE在收到所述缓存重置信息以后，可以根据缓存重置信息的内容释放或清空所述UE的当前压缩缓存。该缓存重置信息可以通过PDCP PDU发送。
若UE收到了激活或启用字典指示，则UE将字典存入压缩缓存中，用该压缩缓存中的字典来压缩本承载内第一个PDCP包。该压缩缓存可以依据已传数据包的持续进行更新，后续的数据包使用更新后的压缩缓存继续压缩。
若UE收到了激活或启用第M号字典指示，则UE将之前接收到的网络配置的字典中第M号字典存入压缩缓存中，用该第M号字典压缩本承载内的第一个PDCP包。该压缩缓存可以依据已传数据包的持续进行更新，后续 的数据包使用更新后的压缩缓存继续压缩。
在UE处于连接态时，eNB向UE发送UDC配置信息，其中可以包含如下信息的一种或多种：UDC去激活指示、UDC字典重置指示、UDC字典重载指示。
当UE收到UDC去激活指示后，UE停止UDC压缩，后续PDCP数据包不采用UDC压缩。
当UE收到UDC字典重置指示后，UE清空UDC压缩缓存。
当UE收到UDC字典重载指示后，UE重新用字典装载UDC压缩缓存。
第二实例
本实例中，网络侧设备通过PDCP PDU(Protocol Data Unit，协议数据单元)激活以及去激活上行数据压缩字典。
eNB向UE发送PDCP PDU。如图5A所示，该PDCP PDU中包含如下信息中的一种或多种：
(1)UDC：激活或去激活上行数据压缩，1代表启动上行数据压缩，0代表停止上行数据压缩，即去激活上行数据压缩。UE收到PDCP PDU后，根据UDC字段的值启动或停止上行数据压缩。
(2)PD：采用字典(predefined dictionary)，1代表装载字典，0代表清空字典。UE收到PDCP PDU后，若PD字段的值为1，则装载字典，用装有该字典的缓存压缩第一个PDCP数据包。若PD字段的值为0，UE重置压缩缓存，即，将压缩缓存清空。
(3)PD id：字典id(predefined dictionary identity)，可以用大于1个比特(bit)指示eNB要求UE使用的字典号。UE收到PDCP PDU后，根据PD id字段中指示的字典号得到字典，将字典存入压缩缓存中，用装有该字典的缓存压缩第一个PDCP数据包。若PD id字段中没有值或PD id字段为空，则若PD＝1，则存入默认字典，若PD＝0，则不存入字典，压缩缓存清空。
eNB可以向UE发送该PDCP PDU来停止上行数据压缩，即将UDC字段置为0，或修改使用的字典，即在‘PD id’字段中填写需要启用的新字典号。
图5B示出承载UDC反馈消息的PDCP控制PDU的示意图，其中FE指 示校验和是否有错误，0表示无错误，1表示校验和错误。
图5C示出12比特(bit)SN(Sequence Number)号的PDCP数据PDU的示意图。其中，校验和指示校验和信息，FU指示是否使用UDC压缩，FR指示压缩缓存是否被重置。
图5D示出15bit SN号的PDCP数据PDU的示意图。其中，校验和指示校验和信息，FU指示是否使用UDC压缩，FR指示压缩缓存是否被重置。
图5D示出18bit SN号的PDCP数据PDU的示意图。其中，校验和指示校验和信息，FU指示是否使用UDC压缩，FR指示压缩缓存是否被重置。
第三实例
本实例中，网络侧设备通过广播消息激活或去激活上行数据压缩字典。
每个DRB(Data Resource Bearer，数据资源承载)都有对应的QCI(QoS Class Identifier，标度值)，比如上网类业务默认承载的QCI＝9，VoLTE业务默认承载QCI＝5，VoLTE业务专用承载QCI＝1，ViLTE业务专用承载QCI＝2。上行数据压缩是针对某承载执行的，比如可以只压缩QCI＝5的承载，而不压缩QCI＝9的承载。也可以用第M号字典压缩QCI＝5的承载，用第Q号字典压缩QCI＝1的承载。
eNB在系统消息中广播如下信息的一种或几种：
(1)为QCI＝N的承载激活/或去激活UDC：即，要求UE在连接态时，为QCI＝N的承载激活上行数据压缩。UE收到该信息，在进入连接态并建立QCI＝N的承载时，为该承载启用上行数据压缩。或为QCI＝N的承载去激活UDC，UE将QCI＝N的承载的UDC停止。
(2)为QCI＝N的承载启用字典：即，要求UE在连接态时，为QCI＝N的承载启用字典。UE收到该信息，在进入连接态并建立QCI＝N的承载时，将字典存入压缩缓存，用存有该字典的缓存压缩第一条上行PDCP数据包。若第一信息指示该承载要激活UDC，若第二信息没有指示该承载要启用字典，则该承载不采用字典，初始缓存为空。
(3)为QCI＝N的承载启用第M号字典：即，要求UE在连接态时，为QCI＝N的承载启用第M号字典。UE收到该信息，在进入连接态并建立QCI＝N 的承载时，将第M号字典存入压缩缓存，用存有该字典的缓存压缩第一条上行PDCP数据包。若系统消息中未包含该信息，且包含上面第二条信息，则UE将默认字典存入压缩缓存。
第四实例
UE在发起TAU时，UE上报网络侧设备具备上行数据压缩能力和/或预存储字典能力，网络侧设备为UE下发当前区域适用的字典，具体可以是基站通过TAU过程中的RRC连接重配置消息下发，也可以MME通过NAS消息为UE下发。为UE配置的字典可以是1个字典或多个字典。同时UE在出厂时，可能会内置一套默认字典
如果网络侧设备为UE配置1个字典，UE在下次进入连接态时，采用配置的字典做数据压缩。如果网络侧设备没有为UE配置字典，UE采用默认的字典做数据压缩。
如果网络侧设备为UE配置多于1个字典，网络侧会给每个字典做个编号，第1字典，第2字典，第3字典，…，UE存储该多个字典。网络侧设备可以通过系统广播消息发送字典号，比如2号，则本小区内UE采用对应字典做数据压缩，即2号字典。网络侧设备也可以通过RRC消息向UE发送字典号，UE采用对应的字典做数据压缩。
当UE从空闲态发起连接建立请求时，网络侧向UE发送RRC重配置消息，包含上行数据压缩指示，UE在该承载上发送的第一条消息采用配置的字典做压缩。
当UE进入另一个TA区时，UE上报已获取字典指示和/或已获取字典编号和/或获取字典的小区或区域标识，如果网络侧设备为UE下发新的字典，UE会丢弃之前储存的字典；如果网络侧设备没有为UE下发新的字典，UE继续使用原字典。
第五实例
本实例中，网络侧设备通过RRC信令为UE下发字典。
UE发起随机接入过程，进入连接态，网络侧通过RRC消息为UE建立QCI5承载，网络侧通过RRC消息向UE发送字典。UE在QCI5承载上发送 VoLTE的invite消息时，将invite消息用该字典压缩，网络侧用该字典解压缩该数据包。
本实例中，每次UE进入连接态，网络侧都要通过RRC消息向UE发送字典，该字典仅在本次连接过程中使用。下次进入连接态，网络侧将重新发送新的字典。
本公开的一些实施例还提供了一种网络侧设备，如图6所示，包括处理器61和收发器62。
所述收发器62用于通知用户设备激活、去激活或重置用于上行数据压缩的字典。
网络侧设备能够为用户设备动态配置用于上行数据压缩的字典，并通知所述用户设备激活、去激活或重置所述字典，之后用户设备获取网络侧设备为所述用户设备配置的用于上行数据压缩的字典，并且根据获取的网络侧设备配置的字典进行上行数据压缩，本公开的技术方案中，用户设备并不是采用预存的静态字典来进行上行数据压缩，而是利用网络侧设备动态配置的字典进行上行数据压缩，能够使网络侧为UE配置最合适的字典。
进一步地，所述处理器61还用于获取所述用户设备的能力信息，所述能力信息包括所述用户设备是否支持上行数据压缩，并在所述用户设备支持上行数据压缩时，为用户设备配置用于上行数据压缩的字典。
进一步地，所述收发器62具体用于向所述用户设备发送无线资源控制RRC连接重配置消息，所述RRC连接重配置消息包括以下信息中的至少一种：激活或启用字典指示；激活或启用第M号字典指示，其中，第M号字典为所述用户设备预存储的多个字典中的一个。
进一步地，所述收发器62还用于向所述用户设备发送RRC消息，所述RRC消息包括以下信息中的至少一种：字典去激活或停止指示；字典重置指示；上行数据压缩字典重载指示。
进一步地，所述收发器62具体用于向所述用户设备发送分组数据汇聚协议PDCP协议数据单元PDU，所述PDU中携带有以下信息的至少一种：字典去激活或停止指示；激活或启用字典指示；字典重置指示；所述用户设备 预存储的多个字典中，其中一个字典的标识。
进一步地，所述收发器62具体用于发送系统广播消息，所述系统广播消息中包括以下信息的至少一种：标度值为N的承载的字典去激活或停止指示；标度值为N的承载的激活或启用字典指示；标度值为N的承载的字典重置指示；标度值为N的承载的激活第M号字典的指示，其中，第M号字典为所述用户设备预存储的多个字典中的一个。
本公开的一些实施例还提供了一种用户设备，如图7所示，包括处理器71和收发器72。
所述处理器71用于根据网络侧设备的指示激活、去激活或重置用于上行数据压缩的字典。
网络侧设备能够为用户设备动态配置用于上行数据压缩的字典，并通知所述用户设备激活、去激活或重置所述字典，之后用户设备获取网络侧设备为所述用户设备配置的用于上行数据压缩的字典，并且根据获取的网络侧设备配置的字典进行上行数据压缩。本公开的技术方案中，用户设备并不是采用预存的静态字典来进行上行数据压缩，而是利用网络侧设备动态配置的字典进行上行数据压缩，能够使网络侧为UE配置最合适的字典。
进一步地，所述收发器72还用于向所述网络侧设备上报所述用户设备的能力信息，所述能力信息包括所述用户设备支持上行数据压缩，获取网络侧设备为所述用户设备配置的用于上行数据压缩的字典。
进一步地，所述收发器72具体用于接收所述网络侧设备发送的无线资源控制RRC连接重配置消息，所述RRC连接重配置消息包括以下信息中的至少一种：激活或启用字典指示；激活或启用第M号字典指示，其中，第M号字典为所述用户设备预存储的多个字典中的一个。
在所述RRC连接重配置消息中包括所述激活或启用字典指示时，所述处理器将所述字典存入压缩缓存中，利用所述字典来压缩当前承载内第一个分组数据汇聚协议PDCP包；或在所述RRC连接重配置消息中包括所述激活或启用第M号字典指示时，所述用户设备将预存储的多个字典中的第M号字典存入压缩缓存中，并利用所述第M号字典压缩当前承载内第一个PDCP包。
进一步地，所述收发器72还用于接收所述网络侧设备发送的RRC消息，所述RRC消息包括以下信息中的至少一种：字典去激活或停止指示；字典重置指示；上行数据压缩字典重载指示。
在所述RRC消息中包括所述字典去激活或停止指示时，所述处理器停止上行数据压缩功能；或在所述RRC消息中包括所述字典重置指示时，所述处理器清空上行数据压缩的压缩缓存；或在所述RRC消息中包括所述上行数据压缩字典重载指示时，所述处理器重新利用所述字典装载上行数据压缩的压缩缓存。
进一步地，所述收发器72具体用于接收所述网络侧设备发送的分组数据汇聚协议PDCP协议数据单元PDU，并根据所述PDU激活或去激活上行数据压缩字典，所述PDU中携带有以下信息的至少一种：字典去激活或停止指示；激活或启用字典指示；字典重置指示；所述用户设备预存储的多个字典中，其中一个字典的标识。
进一步地，所述收发器72具体用于接收所述网络侧设备发送的系统广播消息，并根据所述系统广播消息激活或去激活承载的上行数据压缩字典，所述系统广播消息中包括以下信息的至少一种：标度值为N的承载的字典去激活或停止指示；标度值为N的承载的激活或启用字典指示；标度值为N的承载的字典重置指示；标度值为N的承载的激活第M号字典的指示，其中，第M号字典为所述用户设备预存储的多个字典中的一个。
本公开的一些实施例还提供了一种网络侧设备，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序；所述处理器执行所述程序时实现如上所述的缓存控制方法的步骤。上面的应用于网络侧设备的缓存控制方法的所有技术细节和效果均适用于本公开的提到的该网络侧设备。因此，本文省略该网络侧设备的详细描述。
本公开的一些实施例还提供了一种用户设备，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序；所述处理器执行所述程序时实现如上所述的缓存控制方法的步骤。上面的应用于用户设备的缓存控制方法的所有技术细节和效果均适用于本公开的提到的该用户设备。 因此，本文省略该用户设备的详细描述。
本公开的一些实施例还提供了一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现如上所述的字典配置方法或缓存控制方法中的步骤。
计算机可读介质包括永久性的和非永久性的、可移动和非可移动媒体可以由任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括，但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带，磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质，可用于存储可以被计算设备访问的信息。按照本文中的界定，计算机可读介质不包括暂存电脑可读媒体(transitory media)，如调制的数据信号和载波。
以上所述是本公开的可选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本公开所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本公开的保护范围。

Claims (45)

  1. 一种缓存控制方法，所述缓存控制方法应用于网络侧设备，所述方法包括：
    网络侧设备接收用户设备发送的第一校验信息；
    所述网络侧设备判断所述用户设备中的压缩缓存的内容与所述网络侧设备中的解压缩缓存的内容是否相同；以及
    当所述压缩缓存的内容与所述解压缩缓存的内容不相同时，所述网络侧设备向所述用户设备发送第一缓存重置信息。
  2. 根据权利要求1所述的缓存控制方法，其中，在所述网络侧设备接收所述用户设备发送的第一校验信息的步骤以前，所述缓存控制方法进一步包括：
    所述网络侧设备获取所述用户设备的能力信息，所述能力信息包括所述用户设备是否支持上行数据压缩UDC的指示。
  3. 根据权利要求1所述的缓存控制方法，其中，所述第一缓存重置信息用于指示所述用户设备释放或清空所述用户设备的所述压缩缓存。
  4. 根据权利要求1-3中任一项所述的方法，其中，所述网络侧设备向所述用户设备发送第一缓存重置信息，包括：
    所述网络侧设备通过分组数据汇聚协议PDCP协议数据单元PDU发送所述第一缓存重置信息。
  5. 根据权利要求2所述的缓存控制方法，进一步包括：
    当所述用户设备支持所述UDC时，那么所述网络侧设备向所述用户设备发送UDC激活指示、激活或启用字典指示、和激活或启用第M号字典指示中的至少一个，其中M是大于1的正整数。
  6. 根据权利要求5所述的缓存控制方法，进一步包括：
    在所述用户设备处于连接态时，所述网络侧设备向所述用户设备发送UDC配置信息，所述UDC配置信息包括UDC去激活指示、UDC字典重置指示、UDC字典重载指示中的一个或多个。
  7. 根据权利要求1所述的缓存控制方法，进一步包括：
    所述网络侧设备向所述用户设备发送第二校验信息；
    所述网络侧设备接收所述用户设备发送的第二缓存重置信息，所述第二缓存重置信息用于指示所述网络侧设备释放或清空所述网络侧设备中的压缩缓存。
  8. 一种缓存控制方法，所述缓存控制方法应用于用户设备，所述方法包括：
    所述用户设备向所述网络侧设备发送第一校验信息；
    所述用户设备从所述网络侧设备接收第一缓存重置信息；以及
    根据所述第一缓存重置信息的内容，释放或清空所述用户设备的当前压缩缓存。
  9. 根据权利要求8所述的缓存控制方法，进一步包括：
    所述用户设备从所述网络侧设备接收上行数据压缩UDC激活指示、激活或启用字典指示、和激活或启用第M号字典指示中的至少一个，其中所述M是大于1的正整数。
  10. 根据权利要求9所述的缓存控制方法，其中，
    在所述用户设备接收到所述UDC激活指示后，所述用户设备将每个分组数据汇聚协议PDCP数据包与所述用户设备中的所述压缩缓存的内容做比较，并且用该压缩缓存的标识替代原PDCP数据包，实现上行数据压缩；
    若用户设备收到了激活或启用字典指示，则所述用户设备将字典存入压缩缓存中，用该压缩缓存中的字典来压缩本承载内第一个PDCP包，该压缩缓存依据已传数据包的持续进行更新，后续的数据包使用更新后的压缩缓存继续压缩；
    若用户设备收到了激活或启用第M号字典指示，则用户设备将之前接收到的网络侧设备配置的字典中第M号字典存入压缩缓存中，用该第M号字典压缩本承载内的第一个PDCP包，该压缩缓存依据已传数据包的持续进行更新，后续的数据包使用更新后的压缩缓存继续压缩。
  11. 根据权利要求8所述的缓存控制方法，其中，
    在所述用户设备处于连接态时，所述用户设备从所述网络侧设备接收UDC配置信息，
    其中所述UDC配置信息包含如下信息的一种或多种：UDC去激活指示、UDC字典重置指示、UDC字典重载指示。
  12. 根据权利要求11所述的缓存控制方法，其中，
    当所述用户设备收到UDC去激活指示时，所述用户设备停止UDC，并且后续的分组数据汇聚协议PDCP数据包不采用UDC压缩；
    当所述用户设备收到UDC字典重置指示时，所述用户设备清空所述压缩缓存；以及
    当所述用户设备收到UDC字典重载指示时，所述用户设备重新用字典装载所述压缩缓存。
  13. 根据权利要求8所述的缓存控制方法，进一步包括：
    所述用户设备接收所述网络侧设备发送第二校验信息；
    所述用户设备判断所述用户设备中的解压缩缓存的内容与所述网络侧设备中的压缩缓存的内容是否相同；以及
    当所述网络侧设备的压缩缓存的内容与所述用户设备的解压缩缓存的内容不相同时，所述用户设备向所述网络侧设备发送第二缓存重置信息。
  14. 根据权利要求13所述的缓存控制方法，其中，所述第二缓存重置信息用于指示所述网络侧设备释放或清空所述网络侧设备的所述压缩缓存。
  15. 一种字典配置方法，该字典配置方法应用于网络侧设备，所述方法包括：
    所述网络侧设备为用户设备配置用于上行数据压缩的字典；以及
    所述网络侧设备向所述用户设备通知所述用于上行数据压缩的字典。
  16. 根据权利要求15所述的字典配置方法，其中，所述网络侧设备向所述用户设备通知所述用于上行数据压缩的字典，包括：
    所述网络侧设备通知用户设备激活、或去激活、或重置用于上行数据压缩的字典；或者
    所述网络侧设备向所述用户设备发送字典。
  17. 根据权利要求15所述的字典配置方法，其中，在所述网络侧设备为用户设备配置用于上行数据压缩的字典以前，所述方法还包括：
    所述网络侧设备获取所述用户设备的能力信息，所述能力信息包括所述用户设备是否支持上行数据压缩；以及
    在所述用户设备支持上行数据压缩时，所述网络侧设备为用户设备配置用于上行数据压缩的字典。
  18. 根据权利要求17所述的字典配置方法，其中，所述网络侧设备通知所述用户设备激活、或去激活、或重置用于上行数据压缩的字典包括：
    所述网络侧设备向所述用户设备发送无线资源控制RRC连接重配置消息，所述RRC连接重配置消息包括以下信息中的至少一种：
    激活或启用字典指示；
    激活或启用第M号字典指示，其中，第M号字典为所述用户设备预存储的多个字典中的一个，M代表正整数。
  19. 根据权利要求15所述的字典配置方法，其中，所述网络侧设备向用户设备通知用于数据压缩的字典步骤以后，所述方法还包括：
    所述网络侧设备向所述用户设备发送RRC消息，所述RRC消息包括以下信息中的至少一种：
    字典去激活或停止指示；
    字典重置指示；和
    上行数据压缩字典重载指示。
  20. 根据权利要求16所述的字典配置方法，其中，所述网络侧设备通知所述用户设备激活、或去激活、或重置用于上行数据压缩的字典，包括：
    所述网络侧设备向所述用户设备发送分组数据汇聚协议PDCP协议数据单元PDU，所述PDU中携带有以下信息的至少一种：
    字典去激活或停止指示；
    激活或启用字典指示；
    字典重置指示；和
    所述用户设备预存储的多个字典中，其中一个字典的标识。
  21. 根据权利要求16所述的字典配置方法，其中，所述网络侧设备通知所述用户设备激活、或去激活、或重置用于上行数据压缩的字典包括：
    所述网络侧设备发送系统广播消息，所述系统广播消息中包括以下信息的至少一种：
    标度值为N的承载的字典去激活或停止指示；
    标度值为N的承载的激活或启用字典指示；
    标度值为N的承载的字典重置指示；
    标度值为N的承载的激活第M号字典的指示，其中，第M号字典为所述用户设备预存储的多个字典中的一个。
  22. 一种字典配置方法，应用于用户设备，所述方法包括：
    所述用户设备从网络侧设备获取指示或者字典；以及
    所述用户设备根据网络侧设备的指示激活、或去激活、或重置用于上行数据压缩的字典。
  23. 根据权利要求22所述的字典配置方法，其中，所述用户设备从网络侧设备获取指示或者字典之前，所述方法还包括：
    所述用户设备在进行跟踪区更新时，向所述网络侧设备上报所述用户设备的能力信息，所述能力信息包括所述用户设备支持上行数据压缩。
  24. 根据权利要求22所述的字典配置方法，其中，所述用户设备从网络侧设备获取指示，包括：
    所述用户设备接收所述网络侧设备发送的无线资源控制RRC连接重配置消息，所述RRC连接重配置消息包括以下信息中的至少一种：
    激活或启用字典指示；
    激活或启用第M号字典指示，其中，第M号字典为所述用户设备预存储的多个字典中的一个，M是正整数。
  25. 根据权利要求24所述的字典配置方法，其中，
    在所述RRC连接重配置消息中包括所述激活或启用字典指示时，所述用户设备将所述字典存入压缩缓存中，利用所述字典来压缩当前承载内第一个分组数据汇聚协议PDCP包；或
    在所述RRC连接重配置消息中包括所述激活或启用第M号字典指示时，所述用户设备将预存储的多个字典中的第M号字典存入压缩缓存中，利用所述第M号字典压缩当前承载内第一个PDCP包。
  26. 根据权利要求22所述的字典配置方法，其中，所述用户设备从网络侧设备获取指示，包括：
    所述用户设备接收所述网络侧设备发送的RRC消息，所述RRC消息包括以下信息中的至少一种：
    字典去激活或停止指示；
    字典重置指示；
    上行数据压缩字典重载指示。
  27. 根据权利要求26所述的字典配置方法，其中，
    在所述RRC消息中包括所述字典去激活或停止指示时，所述用户设备停止上行数据压缩功能；或
    在所述RRC消息中包括所述字典重置指示时，所述用户设备清空上行数据压缩的压缩缓存；或
    在所述RRC消息中包括所述上行数据压缩字典重载指示时，所述用户设备重新利用所述字典装载上行数据压缩的压缩缓存。
  28. 根据权利要求22所述的字典配置方法，其中，所述用户设备从网络侧设备获取指示，包括：
    所述用户设备接收所述网络侧设备发送的分组数据汇聚协议PDCP协议数据单元PDU，并根据所述PDU激活或去激活上行数据压缩字典，所述PDU中携带有以下信息的至少一种：
    字典去激活或停止指示；
    激活或启用字典指示；
    字典重置指示；
    所述用户设备预存储的多个字典中，其中一个字典的标识。
  29. 根据权利要求22所述的字典配置方法，其中，所述用户设备从网络侧设备获取指示，包括：
    所述用户设备接收所述网络侧设备发送的系统广播消息，并根据所述系统广播消息激活或去激活承载的上行数据压缩字典，所述系统广播消息中包括以下信息的至少一种：
    标度值为N的承载的字典去激活或停止指示；
    标度值为N的承载的激活或启用字典指示；
    标度值为N的承载的字典重置指示；
    标度值为N的承载的激活第M号字典的指示，其中，第M号字典为所述用户设备预存储的多个字典中的一个。
  30. 一种网络侧设备，包括：
    处理器、收发器和解压缩缓存，
    其中，所述收发器配置为接收用户设备发送的第一校验信息；
    所述处理器配置为：
    判断所述用户设备中的压缩缓存的内容与所述解压缩缓存的内容是否相同；以及
    当所述压缩缓存的内容与所述解压缩缓存的内容不相同时，通过所述收发器向所述用户设备发送第一缓存重置信息。
  31. 根据权利要求30所述的网络侧设备，其中，
    所述收发器进一步配置为，在所述收发器接收所述用户设备发送的第一校验信息以前，获取所述用户设备的能力信息，所述能力信息包括所述用户设备是否支持上行数据压缩UDC的指示。
  32. 根据权利要求30所述的网络侧设备，其中，所述第一缓存重置信息用于指示所述用户设备释放或清空所述用户设备的所述压缩缓存。
  33. 根据权利要求30所述的网络侧设备，其中，所述收发器进一步配置为通过分组数据汇聚协议PDCP协议数据单元PDU发送所述第一缓存重置信息。
  34. 根据权利要求31所述的网络侧设备，其中，所述收发器进一步配置为：
    当所述用户设备支持所述UDC时，向所述用户设备发送UDC激活指示、 激活或启用字典指示、和激活或启用第M号字典指示中的至少一个，其中M是大于1的正整数。
  35. 根据权利要求34所述的网络侧设备，其中，所述收发器进一步配置为：
    在所述用户设备处于连接态时，向所述用户设备发送UDC配置信息，所述UDC配置信息包括UDC去激活指示、UDC字典重置指示、UDC字典重载指示中的一个或多个。
  36. 根据权利要求30所述的网络侧设备，其中，所述网络侧设备进一步包括压缩缓存，并且所述处理器进一步配置为：
    通过所述收发器向所述用户设备发送第二校验信息；以及
    通过所述收发器接收所述用户设备发送的第二缓存重置信息，
    其中，所述第二缓存重置信息用于指示所述网络侧设备释放或清空所述网络侧设备的所述压缩缓存。
  37. 一种用户设备，包括：
    处理器、收发器和压缩缓存；
    其中，所述收发器配置为向网络侧设备发送第一校验信息以及从所述网络侧设备接收第一缓存重置信息，
    所述处理器配置为根据所述第一缓存重置信息的内容，释放或清空所述用户设备的所述压缩缓存。
  38. 根据权利要求37所述的用户设备，其中，所述收发器进一步配置为：
    从所述网络侧设备接收上行数据压缩UDC激活指示、激活或启用字典指示、和激活或启用第M号字典指示中的至少一个，其中所述M是大于1的正整数。
  39. 根据权利要求38所述的用户设备，其中，
    在所述收发器接收到所述UDC激活指示后，所述处理器将每个分组数据汇聚协议PDCP数据包与所述用户设备中的所述压缩缓存的内容做比较，并且用该压缩缓存的标识替代原PDCP数据包，实现上行数据压缩；
    若所述收发器收到了激活或启用字典指示，则所述处理器将字典存入压 缩缓存中，用该压缩缓存中的字典来压缩本承载内第一个PDCP包，该压缩缓存依据已传数据包的持续进行更新，后续的数据包使用更新后的压缩缓存继续压缩；
    若所述收发器收到了激活或启用第M号字典指示，则所述处理器将之前接收到的网络侧设备配置的字典中第M号字典存入压缩缓存中，用该第M号字典压缩本承载内的第一个PDCP包，所述压缩缓存依据已传数据包的持续进行更新，后续的数据包使用更新后的压缩缓存继续压缩。
  40. 根据权利要求37所述的用户设备，其中，在所述用户设备处于连接态时，所述收发器从所述网络侧设备接收UDC配置信息，
    其中所述UDC配置信息包含如下信息的一种或多种：UDC去激活指示、UDC字典重置指示、UDC字典重载指示。
  41. 根据权利要求40所述的用户设备，其中，
    当所述收发器收到UDC去激活指示时，所述处理器停止UDC，并且后续的分组数据汇聚协议PDCP数据包不采用UDC压缩；
    当所述收发器收到UDC字典重置指示时，所述处理器清空所述压缩缓存；以及
    当所述收发器收到UDC字典重载指示时，所述处理器重新用字典装载所述压缩缓存。
  42. 根据权利要求37所述的用户设备，其中，所述用户设备进一步包括解压缩缓存，所述收发器进一步配置为接收所述网络侧设备发送第二校验信息；
    所述处理器进一步配置为判断所述用户设备中的解压缩缓存的内容与所述网络侧设备中的压缩缓存的内容是否相同；以及
    当所述用户设备中的解压缩缓存的内容与所述网络侧设备中的压缩缓存的内容不相同时，通过所述收发器向所述网络侧设备发送第二缓存重置信息。
  43. 一种网络侧设备，包括：
    存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序；其中，所述处理器执行所述程序时，所述处理器实现如权利要求1-7 中任一项所述的缓存控制方法。
  44. 一种用户设备，包括：
    存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序；其中，所述处理器执行所述程序时，所述处理器实现如权利要求8-14中任一项所述的缓存控制方法。
  45. 一种非易失性的计算机可读存储介质，其上存储有计算机程序，其中，该程序被处理器执行时实现如权利要求1-7中任一项所述的缓存控制方法中的步骤或实现如权利要求8-14中任一项所述的缓存控制方法中的步骤。
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