WO2019100937A1 - 一种进行数据传输的方法和设备 - Google Patents

一种进行数据传输的方法和设备 Download PDF

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Publication number
WO2019100937A1
WO2019100937A1 PCT/CN2018/114181 CN2018114181W WO2019100937A1 WO 2019100937 A1 WO2019100937 A1 WO 2019100937A1 CN 2018114181 W CN2018114181 W CN 2018114181W WO 2019100937 A1 WO2019100937 A1 WO 2019100937A1
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Prior art keywords
compression dictionary
dictionary
compression
network side
side device
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PCT/CN2018/114181
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English (en)
French (fr)
Inventor
刘佳敏
全海洋
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电信科学技术研究院有限公司
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Publication of WO2019100937A1 publication Critical patent/WO2019100937A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/06Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/10Flow control between communication endpoints
    • H04W28/14Flow control between communication endpoints using intermediate storage
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a method and device for performing data transmission.
  • the terminal can configure the UL data compression (UDC) function.
  • the uplink data compression means that the terminal compresses the uplink data or the signaling at the layer 2, and the base station side decompresses the compressed data at the corresponding protocol layer, so as to save the amount of data transmitted by the air interface, save uplink resources, and improve transmission efficiency.
  • the terminal and the base station side independently maintain the cache according to the data transmitted and received.
  • content can be stored in the cache: one is a pre-configured high-match probability content, such as the Common Hypertext Transport Protocol (HTTP) header Host:, Accept:, etc.; the other is
  • HTTP Common Hypertext Transport Protocol
  • the previous data packet can be added to the cache, and the subsequent data packet content is matched according to the content of the previous data packet.
  • the present application provides a method and device for performing data transmission, which solves the problem of how to perform data transmission in the prior art after buffer initialization or resetting due to cache out-of-sync.
  • a method for performing data transmission includes:
  • the network side device stores the target compression dictionary in the decompression cache
  • the network side device decompresses the received UDC compressed data packet by using a decompression buffer.
  • the network side device stores the target compression dictionary in the decompression cache, including:
  • the network side device stores the target compression dictionary in the decompression buffer, and the remaining locations supplement the set values; wherein the remaining locations include the front and/or the last of the decompression buffer. ; or
  • the network side device stores the first N bits or the last N bits or the intermediate N bits of the target compression dictionary to the decompression buffer, where N is the capacity of the decompression buffer.
  • the method further includes:
  • the network side device selects an unused and highest priority compression dictionary as the target compression dictionary according to the compression dictionary priority;
  • the network side device Before the network side device decompresses the received UDC compressed data packet by using the decompression buffer, the network side device further includes:
  • the network side device performs cache check according to the received UDC compressed data packet, and determines that the cache check succeeds;
  • the method also includes:
  • the network side device If the cache check fails, the network side device returns a step of selecting an unused and highest priority compression dictionary as the target compression dictionary according to the compression dictionary priority until the cache check succeeds or there is no unused compression dictionary.
  • the method further includes:
  • the network side device uses the compression dictionary corresponding to the compression dictionary identifier as the target compression dictionary.
  • the method further includes:
  • the network side device configures, for the terminal, a compression dictionary used for sending
  • the network side device uses a compression dictionary configured to the terminal as a target compression dictionary.
  • the method before the network side device decompresses the received UDC compressed data packet by using the decompression buffer, the method further includes:
  • the network side device performs cache check according to the received UDC compressed data packet, and determines that the cache check succeeds;
  • the method also includes:
  • the network side device selects an unused and highest priority compression dictionary as the target compression dictionary according to the compression dictionary priority until the cache check succeeds or there is no unused compression dictionary.
  • an embodiment of the present application is a method for performing data transmission, where the method includes:
  • the terminal stores the target compression dictionary into the compression cache
  • the terminal compresses the data packet to be sent by using a compression buffer to obtain a UDC compressed data packet
  • the terminal sends the UDC compressed data packet.
  • the terminal stores the target compression dictionary into the compression cache, including:
  • the terminal stores the target compression dictionary into the compression cache, and the remaining locations supplement the set values; wherein the remaining locations include the first and/or the last of the compression cache;
  • the terminal stores the first N bits or the last N bits or the intermediate N bits of the target compression dictionary into the compression buffer, where N is the capacity of the decompression buffer.
  • the method before the terminal stores the target compression dictionary in the compression cache, the method further includes:
  • the terminal uses the compression dictionary with the highest priority as the target compression dictionary according to the currently used compression dictionary priority.
  • the method before the terminal stores the target compression dictionary in the compression cache, the method further includes:
  • the terminal uses a compression dictionary used for transmission of the network side device configuration as a target compression dictionary.
  • the method before the terminal stores the target compression dictionary in the compression cache, the method further includes:
  • the compression dictionary with the highest priority is used as the target compression dictionary according to the currently used compression dictionary priority or the compression dictionary of the network side device configuration is not higher.
  • the level of the compression dictionary serves as the target compression dictionary.
  • a network side device for performing data transmission includes: a processor, a memory, and a transceiver;
  • a processor that reads a program in memory and performs the following procedures:
  • the target compression dictionary is stored in the decompression cache; the received UDC compressed data packet is decompressed by the decompression buffer.
  • a fourth aspect of the present disclosure provides a terminal for performing data transmission, where the terminal includes: a processor, a memory, and a transceiver;
  • a processor that reads a program in memory and performs the following procedures:
  • the target compression dictionary is stored in the compression cache; the data packet to be sent is compressed by the compression buffer to obtain a UDC compressed data packet; and the UDC compressed data packet is transmitted.
  • a network side device that performs data transmission is provided in the embodiment of the present application, where the network side device includes:
  • a processing module configured to store the target compression dictionary into the decompression cache
  • the decompression module is configured to decompress the received UDC compressed data packet by using a decompression buffer.
  • a sixth aspect of the present disclosure provides a terminal for performing data transmission, where the terminal includes:
  • a cache module for storing the target compression dictionary in the compression cache
  • a compression module configured to compress a data packet to be sent by using a compression buffer to obtain a UDC compressed data packet
  • a sending module configured to send the UDC compressed data packet.
  • a cache synchronization abnormal device readable storage medium provided by an embodiment of the present application includes program code, where the program code is used to cause the computing device to execute the foregoing when the program code is run on a computing device.
  • the network side device decompresses the received UDC compressed data packet by using a target compression dictionary in the decompression cache; the terminal compresses the data packet to be sent by using the target compression dictionary in the compression cache to obtain a UDC compressed data packet. send.
  • the network side device and the terminal can perform decompression operations and compression through the target compression dictionary, thereby improving the success rate of data transmission after the cache initialization or resetting due to the cache asynchronous; further improving transmission efficiency and saving air interface resources.
  • FIG. 1 is a schematic structural diagram of a system for performing data transmission according to an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of a first network side device according to an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a first terminal according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a second network side device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a second terminal according to an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a method for receiving data by a network side device according to an embodiment of the present disclosure
  • FIG. 7 is a schematic flowchart of a method for transmitting data by a terminal according to an embodiment of the present application.
  • the system for performing data transmission in the embodiment of the present application includes: a network side device 10 and a terminal 20.
  • the network side device 10 is configured to store the target compression dictionary into the decompression buffer, and decompress the received UDC compressed data packet by using the decompression buffer.
  • the terminal 20 is configured to store the target compression dictionary into the compression cache; compress the data packet to be sent by the compression buffer to obtain a UDC compressed data packet; and send the UDC compressed data packet.
  • the network side device decompresses the received UDC compressed data packet by using a target compression dictionary in the decompression cache; the terminal compresses the data packet to be sent by using the target compression dictionary in the compression cache to obtain a UDC compressed data packet. send.
  • the network side device and the terminal can perform decompression operations and compression through the target compression dictionary, thereby improving the success rate of data transmission after the cache initialization or resetting due to the cache asynchronous; further improving transmission efficiency and saving air interface resources.
  • the network side device in the embodiment of the present application may be a base station (such as a macro base station, an evolved base station, a home base station, etc.), or may be a relay (RN, Relay Node) device, or may be another network side device.
  • a base station such as a macro base station, an evolved base station, a home base station, etc.
  • RN Relay Node
  • the compression dictionary of the embodiment of the present application refers to some existing compressed content reference values, and the information is used as the initial value of the compression cache, which can bring better compression efficiency to the initial compression, otherwise, if the compression cache is all 0s, The operation is equivalent to the initial data packet cannot be compressed, and there is no compressed content reference value.
  • the compression dictionary is synchronized at the receiving end and the transmitting end, that is, the compression dictionary information used at both ends is kept consistent, so that the compression and decompression operations can be performed normally.
  • the compression dictionary of the embodiment of the present application includes a standard compression dictionary and/or an operator-defined compression dictionary.
  • Standard compression dictionaries are generally used to compare specific services, such as Session Initiated Protocol (SIP) signaling for IP over Voice (VoIP) services, The Internet Engineering Task Force, IETF) standardized a special compression dictionary RFC3485.
  • SIP Session Initiated Protocol
  • VoIP IP over Voice
  • IETF Internet Engineering Task Force
  • the operator-defined compression dictionary can generally define the compression dictionary more flexibly. For example, the operator obtains the high-frequency content according to the big data statistics or background statistics of a certain service, and makes it into a carrier-defined compression dictionary.
  • the quotient can mark the compression dictionary applicable to different services as different IDs, for example, define compression dictionary 1 for File Transfer Protocol (FTP) service, and compression dictionary 2 for Hyper Text Transport Protocol (Hyper Text Transport Protocol, HTTP) service, compression dictionary 3 for timely message service, etc.
  • FTP File Transfer Protocol
  • HTTP Hyper Text Transport Protocol
  • Operators can also update the compression dictionary and give detailed version records for different updates. For example, version 1 was released in June 2017 and version 2 was released in October 2017.
  • the standard compression dictionary for the standard compression dictionary, it can be implemented by the network manufacturer and the terminal manufacturer according to the standard.
  • the operator-defined compression dictionary needs to be delivered to the user by the operator because of its dynamic and flexible features.
  • the network side device configures the operator-defined compression dictionary for the terminal by using part or all of multicast, broadcast, and unicast.
  • the network side device sends in broadcast or multicast mode
  • the network side device needs to preview the time of sending and the specific information of the sending mode in advance, so that the terminal can obtain the compressed dictionary of the broadcast or multicast, which is efficient.
  • Sex can notify almost all boot users.
  • the network side device sends in the form of unicast, the network side device sends it to one user at a time.
  • the network side device sends it to one user at a time.
  • the terminal information may be carried in the information that needs to be sent to the terminal, and sent to the terminal;
  • the network side device needs to store the target compression dictionary into the decompression cache, and the terminal needs to store the target compression dictionary into the compression cache.
  • the size of the compression cache is different from the size of the target compression dictionary, and the specific cache is different.
  • Cache mode 1 The capacity of the decompression cache is larger than the size of the target compression dictionary. That is, the entire target compression dictionary can be stored in the decompression buffer, and there will be remaining positions.
  • the network side device stores the target compression dictionary in the decompression buffer, and the remaining locations supplement the set values; wherein the remaining locations include the front and/or the last side of the decompression cache.
  • the tail of the target target compression dictionary and the tail of the decompression buffer can be aligned, and the additional set value is taken in the space extra in front of the decompression buffer.
  • the set value is 0, the capacity of the decompression buffer is 100, and the size of the target target compression dictionary is 80.
  • the target target compression dictionary occupies 80 positions after the compression buffer, and the top 20 position can be complemented by 0.
  • the head of the target target compression dictionary can be aligned with the header of the decompression buffer, and the operation of supplementing the set value is taken in the space extra in front of the decompression buffer.
  • the target target compression dictionary occupies the position 80 before the compression buffer, and the last 20 positions can be filled with 0.
  • the terminal stores the target compression dictionary in the decompression buffer, and the remaining locations supplement the set values; wherein the remaining locations include the first and/or the last of the compression cache.
  • Cache mode 2 If the capacity of the decompression buffer is not greater than the target compression dictionary, the network side device stores the first N bits or the last N bits or the middle N bits of the target compression dictionary into the decompression buffer, where N is the capacity of the decompression buffer.
  • the target compression dictionary and the decompression buffer are both head aligned, the redundant target compression dictionary content is deleted, and the content in the decompression cache is kept as the content of the front part of the target compression dictionary.
  • the position of the top 80 of the target compression dictionary is stored in the decompression buffer.
  • the target compression dictionary and the decompression buffer are both tail aligned, the redundant target compression dictionary content is deleted, and the content in the decompression cache is kept as the content of the back of the target compression dictionary.
  • the capacity of the decompression buffer is 80, and the size of the target target compression dictionary is 100, and the position of the target target compression dictionary 80 is stored in the decompression buffer.
  • the decompression cache is intercepted from the middle of the target compression dictionary, and the contents of the redundant two-head target compression dictionary are deleted, and the content in the decompression cache is kept as the content in the middle of the target compression dictionary.
  • the positions of the target compression dictionary 10th to 90th are stored in the decompression buffer.
  • the selection may be asymmetrically selected, but it is necessary to ensure that the terminal and the network side device select the same location.
  • the target target compression dictionary is entirely stored in the decompression buffer.
  • the terminal stores the first N bits or the last N bits or the intermediate N bits of the target compression dictionary to the decompression buffer, where N is the capacity of the compression buffer.
  • the network side device may configure the compression dictionary used for sending and using the terminal, or may not configure the terminal, which will be separately described below.
  • the network side device configures a compression dictionary used for sending and transmitting the terminal.
  • the compression dictionary configured to the terminal may be used as the target compression dictionary.
  • the network side device notifies the terminal of the identifier of the compression dictionary used for the current transmission.
  • the terminal uses a compression dictionary used for transmission of the network side device configuration as a target compression dictionary.
  • the network side device may configure, according to the terminal support capability information and/or service information of the terminal, a compression dictionary used for sending and using the terminal.
  • the network side device can inform the UE to start a VoIP service related dictionary, such as RFC3485, when configuring a related Data Radio Bearer (DRB).
  • a VoIP service related dictionary such as RFC3485
  • DRB Data Radio Bearer
  • the UE When an HTTP service arrives, the UE (terminal) supports a predefined dictionary of the related service, and the network side can configure the UE to use the predefined dictionary 1 as the initial value of the compression buffer to start the initial compression.
  • the network side device may configure the terminal to use the standardized dictionary as the target compression dictionary; or the network side device may configure the terminal to preset
  • the padding information (such as all 0s) is stored in the compression cache.
  • the dictionary support capability information of the terminal may be any information that enables the network side device to determine which compression dictionary the terminal supports.
  • the terminal sends the dictionary support capability information to the network side device.
  • the terminal can carry its own dictionary capability information when performing capability reporting, for example, whether to support the operator standard compression dictionary, which carrier standard compression dictionary is supported, whether to support a predefined compression dictionary, and the currently stored predefined compression. What is the version of the dictionary, etc.
  • the network side device can determine that the UE supports the standard compression dictionary.
  • the network side device After the network side device sends the latest carrier-defined compression dictionary to the terminal and succeeds (generally such information is sent through the acknowledgement (AM) mode, there may be implicit radio link control (Radio).
  • the feedback of the Link Control (RLC) layer determines whether the terminal successfully receives, or determines whether the terminal receives success through the confirmation of the service layer. Then, the network side device can record that the terminal obtains the latest operator predefined dictionary information, that is, the dictionary support of the terminal.
  • the capability information is the latest carrier predefined dictionary information recorded by the network side device.
  • the behavior of issuing the operator-defined compression dictionary may be initiated by the core network, so the core network records whether the terminal obtains the latest operator predefined dictionary information, and the core network may use the content in the network.
  • the side device queries for example, the UE capability is queried and sent to the network side device for use when the network side device configures the UDC.
  • any other information that enables the network side device to determine the compression dictionary used by the terminal to transmit is applicable to the embodiment of the present application.
  • the terminal determines the compression dictionary used for the transmission of the configuration of the network side device, if the terminal has the configured compression dictionary, the compression dictionary used for transmission by the network side device configuration may be used as the target compression dictionary.
  • the terminal needs to select a compression dictionary as the target compression dictionary.
  • the terminal has a configured compression dictionary.
  • the terminal stores the configured compression dictionary as a target compression dictionary into the compression cache, compresses the data packet to be sent through the compression buffer to obtain a UDC compressed data packet, and transmits the UDC compressed data packet.
  • the terminal does not have a compression dictionary configured, that is, the terminal does not support the configured compression dictionary.
  • This situation generally occurs when the network side device does not know the dictionary support capability of the terminal. For example, the terminal does not report the capability information supported by the dictionary, or the terminal reports the dictionary support capability, but the terminal currently stores the carrier-defined compression.
  • the dictionary has only 1 to 5, but the network side device requires the operator-defined compression dictionary 8, and the operator-defined compression dictionary 8 does not obtain the content at the terminal.
  • the terminal stores the compression dictionary with the highest priority as the target compression dictionary in the compression cache according to the compression dictionary priority currently used, or uses the compression dictionary that is not higher than the priority of the compression dictionary configured by the network side device as the target compression dictionary.
  • the compression buffer compresses the data packet to be transmitted to obtain a UDC compressed data packet, and transmits the UDC compressed data packet.
  • the compression dictionary priority is from high to low: operator-defined compression dictionary A, operator-defined compression dictionary B, and standard compression dictionary.
  • the terminal stores the operator-defined compression dictionary A as a target compression dictionary in the compression buffer, compresses the data packet to be transmitted through the compression buffer to obtain a UDC compressed data packet, and transmits the UDC compressed data packet.
  • the compression dictionary priority is from high to low: operator-defined compression dictionary A, operator-defined compression dictionary B, and standard compression dictionary.
  • the compression dictionary C configured by the network side device has a lower priority than the compression dictionary A is higher than the compression dictionary B, and the terminal stores the operator-defined compression dictionary C as a target compression dictionary in the compression cache, and the compressed cache pair needs to be sent.
  • the data packet is compressed to obtain a UDC compressed data packet, and the UDC compressed data packet is transmitted.
  • the standard compression dictionary can also be stored as a target compression dictionary into the compression cache.
  • the highest compression dictionary that is not higher than the priority of the compression dictionary configured by the network side device may be selected as the target compression dictionary.
  • it can also be randomly or otherwise selected in the priority of the compression dictionary that is not higher than the configuration of the network side device.
  • the terminal may also store the preset padding information in the decompression buffer without compressing the dictionary priority or when there is no compression dictionary in the compression dictionary priority or the compression dictionary configured by the network side device, and the compressed cache pair needs to be sent.
  • the data packet is compressed to obtain a UDC compressed data packet, and the UDC compressed data packet is transmitted.
  • the priority of the compression dictionary currently used by the terminal may be determined according to factors such as the location of the terminal and the current time.
  • the compression dictionary priority currently used by the terminal is the compression dictionary priority corresponding to the base station A.
  • the compression dictionary priority currently used by the terminal is the compression dictionary corresponding to the base station B. priority.
  • Different base stations may have different compression dictionary priorities due to different networks or public land mobile networks (PLMNs).
  • PLMNs public land mobile networks
  • the pre-configured dictionary of the local operator can be regarded as the highest priority, and the standardized dictionary is used as the secondary priority.
  • the pre-configured dictionary of the UE local operator fails at this time, and the pre-configured dictionary UE of the roaming operator does not have time to obtain.
  • the standardized dictionary is the highest priority.
  • a special case is that the network side device configures preset filling information (such as all 0s) for the terminal, and the terminal stores the preset filling information in the decompression buffer.
  • preset filling information such as all 0s
  • the terminal may further set the compression dictionary identifier corresponding to the target compression dictionary to the head of the UDC compressed data packet.
  • the compression dictionary identifier here may be an identifier of a standard compression dictionary or an identifier of an operator-defined compression dictionary.
  • the network side device For the network side device, if the header of the received UDC compressed data packet includes a compression dictionary identifier, the network side device uses the compression dictionary corresponding to the compression dictionary identifier as the target compression dictionary, and stores the target compression dictionary to the decompression dictionary. In the cache; decompress the received UDC compressed data packet by decompressing the cache.
  • the network side device may perform a decompression operation by using the compression dictionary configured to the terminal as the target compression dictionary;
  • the network side device selects an unused and highest priority compression dictionary as the target compression dictionary according to the compression dictionary priority until the cache check succeeds or there is no unused compression dictionary.
  • the compression dictionary priority is from high to low: operator-defined compression dictionary A, operator-defined compression dictionary B, and standard compression dictionary.
  • the network side device configures the carrier-defined compression dictionary A for the terminal, and the network-side device fails the verification with the operator-defined compression dictionary A cache, the network-side device selects the carrier-defined compression according to the compression dictionary priority.
  • the dictionary B is decompressed as the target compression dictionary; if the cache verification is successful, it is no longer selected. If the cache verification fails, the standard compression dictionary is continuously selected as the target compression dictionary for decompression operation.
  • the network side device stores the preset padding information in the decompression buffer, and decompresses the received UDC compressed data packet by using the decompression buffer. operating.
  • the network side device selects the standard compression dictionary as the target compression dictionary for cache verification failure, since there is no unused compression dictionary, the network side device stores the preset padding information (such as all 0s) in the decompression buffer. And decompress the received UDC compressed data packet through the decompression buffer.
  • the preset padding information such as all 0s
  • the terminal may further carry the notification information in the UDC compressed data packet, to notify the network side device terminal that the compression is not used by the compression dictionary or is used to notify the network side.
  • the device terminal compresses using preset padding information.
  • the network side device when receiving the first UDC compressed data packet, first try to perform the cache check according to the compression dictionary configured to the terminal. If successful, the terminal uses the configured compression dictionary information, and then Packets can be decompressed and processed normally. If it is unsuccessful, the terminal does not support the configured compression dictionary. At this time, the network side device adopts the method of sequentially pressing the next compression dictionary priority priority until the cache verification succeeds. The initial value of the cache is successfully selected by the terminal. The initial value of the compressed cache is used, and the network side device also uses the value as the initial value of the decompression buffer for subsequent decompression and subsequent packet processing.
  • the first UDC compressed packet here is the first UDC compressed packet of the initial transmission or the first UDC compressed packet after the compression cache reset.
  • the network side device does not configure the compression dictionary used for sending the terminal.
  • the terminal Since the network side device does not configure the compression dictionary used for the terminal configuration, the terminal needs to use the compression dictionary with the highest priority as the target compression dictionary according to the currently used compression dictionary priority, or directly store the preset padding information into the compression cache. .
  • the compression dictionary priority is from high to low: operator-defined compression dictionary A, operator-defined compression dictionary B, and standard compression dictionary.
  • the terminal stores the operator-defined compression dictionary A as a target compression dictionary in the compression buffer, compresses the data packet to be transmitted through the compression buffer to obtain a UDC compressed data packet, and transmits the UDC compressed data packet.
  • the priority of the compression dictionary currently used by the terminal may be determined according to factors such as the location of the terminal and the current time.
  • the compression dictionary priority currently used by the terminal is the compression dictionary priority corresponding to the base station A.
  • the compression dictionary priority currently used by the terminal is the compression dictionary corresponding to the base station B. priority.
  • Different base stations may have different compression dictionary priorities due to different networks or PLMNs.
  • the pre-configured dictionary of the local operator can be regarded as the highest priority, and the standardized dictionary is used as the secondary priority.
  • the pre-configured dictionary of the UE local operator fails at this time, and the pre-configured dictionary UE of the roaming operator does not have time to obtain.
  • the standardized dictionary is the highest priority.
  • the terminal may further set the compression dictionary identifier corresponding to the target compression dictionary to the head of the UDC compressed data packet.
  • the compression dictionary identifier here may be an identifier of a standard compression dictionary or an identifier of an operator-defined compression dictionary.
  • the terminal may further carry the notification information in the UDC compressed data packet, to notify the network side device terminal that the compression is not compressed by the compression dictionary or is used to notify the network side device terminal to use the pre-preparation. Set the padding information to compress.
  • the network side device For the network side device, if the header of the received UDC compressed data packet includes a compression dictionary identifier, the network side device uses the compression dictionary corresponding to the compression dictionary identifier as the target compression dictionary, and stores the target compression dictionary to the decompression dictionary. In the cache; decompress the received UDC compressed data packet by decompressing the cache.
  • the network side device stores the preset filling information in the decompression buffer; and decompresses the received UDC compressed data packet by using the decompression buffer.
  • the network side device may use the compression dictionary with the highest priority as the target compression dictionary according to the currently used compression dictionary priority, and decompress the buffer to the received UDC. Compress the packet for decompression.
  • the network side device selects an unused and highest priority compression dictionary as a target compression dictionary according to a compression dictionary priority, and decompresses the received UDC compressed data packet by using a decompression buffer;
  • the network side device If the cache check fails, the network side device returns a step of selecting an unused and highest priority compression dictionary as the target compression dictionary according to the compression dictionary priority until the cache check succeeds or there is no unused compression dictionary.
  • the compression dictionary priority is from high to low: operator-defined compression dictionary A, operator-defined compression dictionary B, and standard compression dictionary.
  • the network side device first selects the operator-defined compression dictionary A as the target compression dictionary according to the compression dictionary priority, and performs decompression operation if the cache verification succeeds. If the cache verification fails, the network side device follows the compression dictionary. The priority first selects the operator-defined compression dictionary B as the target compression dictionary for decompression operation; if the cache verification is successful, it is no longer selected. If the cache verification fails, the standard compression dictionary is selected as the target compression dictionary for decompression operation. .
  • the network side device stores the preset padding information in the decompression buffer, and decompresses the received UDC compressed data packet by using the decompression buffer. operating.
  • the network side device selects the standard compression dictionary as the target compression dictionary for cache verification failure, since there is no unused compression dictionary, the network side device stores the preset padding information (such as all 0s) in the decompression buffer. And decompress the received UDC compressed data packet through the decompression buffer.
  • the preset padding information such as all 0s
  • the method of compressing the dictionary priority priority is adopted, until the cache verification succeeds, and the initial value of the cache is successfully selected by the terminal.
  • the initial value then the network side device also uses this value as the initial value of the decompression buffer for subsequent decompression and subsequent packet processing.
  • the first UDC compressed packet here is the first UDC compressed packet of the initial transmission or the first UDC compressed packet after the compression cache reset.
  • the recovery process needs to be started.
  • the recovery process of cache verification failure generally includes the following steps:
  • the network side device finds that the cache check fails, and indicates to the terminal that the cache check fails.
  • the initial value of the cache of the recommended reset may be carried at this time (that is, carrying the indication information used to notify the terminal to configure the compression dictionary or the preset padding information used for sending, such as compressing the dictionary identifier or indicating that the preset padding value is used. information).
  • the cache verification fails, indicating that the carrier-defined compression dictionary used on both sides is inconsistent.
  • the initial value can be selected as a normalized dictionary or a preset padding value (such as all 0s) as the buffer initial value.
  • the first UDC compressed data packet begins to have a cache check failure, indicating that the standard compression dictionary on both sides is abnormal.
  • the initial value can be selected as a preset.
  • the padding value (such as all 0s) is used as the cache initial value.
  • the terminal receives the buffer check failure indication and needs to reset the cache. If the network side device carries the reset initial value of the cache, it resets according to the initial value of the cache. If not, the default is reset to the standardized dictionary or preset. Top up.
  • the first UDC compressed data packet sent by the terminal after resetting the buffer displays a compression dictionary identifier corresponding to the reset indication and/or the target compression dictionary, and informs the receiving end to start resetting from the packet.
  • the reset indication here can be an indication message.
  • the network side device After receiving the first UDC compressed data packet carrying the reset indication, the network side device resets the decompression buffer. If there is an appointment or configuration, the initial value of the decompression buffer after the reset is used according to the agreed or configured initial value;
  • the network side device can sequentially try different compression dictionary and preset reset to perform buffer check according to the manner described above, and select the cache initial value that the cache check succeeds as the cache initial value after reset. After that, normal decompression and processing of the data packet begins.
  • the network side device may perform the cache check on the compression dictionary corresponding to the compression dictionary identifier as the target compression dictionary.
  • cache initial value is the information stored in the decompression cache.
  • the first network side device in this embodiment of the present application includes: a processor 200, a memory 201, and a transceiver 202;
  • the processor 200 is responsible for managing the bus architecture and general processing, and the memory 201 can store data used by the processor 200 when performing operations.
  • the transceiver 202 is configured to receive and transmit data under the control of the processor 200.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 200 and various circuits of memory represented by memory 201.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the processor 200 is responsible for managing the bus architecture and general processing, and the memory 201 can store data used by the processor 200 when performing operations.
  • the flow disclosed in the embodiment of the present application may be applied to the processor 200 or implemented by the processor 200.
  • each step of the signal processing flow may be completed by an integrated logic circuit of hardware in the processor 200 or an instruction in the form of software.
  • the processor 200 can be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or a transistor logic device, and a discrete hardware component, which can be implemented or executed in the embodiment of the present application.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 201, and the processor 200 reads the information in the memory 201 and completes the steps of the signal processing flow in conjunction with its hardware.
  • the processor 200 is configured to read a program in the memory 201 and perform the following processes:
  • the target compression dictionary is stored in the decompression cache; the received UDC compressed data packet is decompressed by the decompression buffer.
  • the processor 200 is specifically configured to:
  • the target compression dictionary is stored in the decompression buffer, and the remaining locations are supplemented with the set values; wherein the remaining locations include the first and/or the last of the decompression buffer;
  • the capacity of the decompression buffer is not greater than the target compression dictionary, the first N bits or the last N bits or the intermediate N bits of the target compression dictionary are stored into the decompression buffer, where N is the capacity of the decompression buffer.
  • processor 200 is further configured to:
  • a step of selecting an unused and highest priority compression dictionary as the target compression dictionary according to the compression dictionary priority is returned until the cache check succeeds or there is no unused compression dictionary.
  • processor 200 is further configured to:
  • the compression dictionary corresponding to the compressed dictionary identifier is used as the target compression dictionary.
  • processor 200 is further configured to:
  • a compression dictionary used for transmission is configured for the terminal; a compression dictionary configured to the terminal is used as a target compression dictionary.
  • processor 200 is further configured to:
  • an unused and highest priority compression dictionary is selected as the target compression dictionary according to the compression dictionary priority until the cache check succeeds or there is no unused compression dictionary.
  • processor 200 is further configured to:
  • the preset padding information is stored in the decompression buffer, and the received UDC compressed data packet is decompressed through the decompression buffer.
  • the processor 200 is specifically configured to:
  • the UDC compressed data packet is the first UDC compressed data packet that is initially transmitted or the first UDC compressed data packet after the compressed cache reset.
  • the first UDC compressed data packet is a first UDC compressed data packet after performing a compression cache reset
  • the processor is further configured to:
  • the terminal After determining that the compression cache and the decompression buffer are out of synchronization, the terminal is notified to perform a cache reset.
  • processor 200 is further configured to:
  • the notification information is included in the notification for notifying the terminal to configure the compression dictionary or the preset padding information used for the transmission.
  • the compression dictionary includes a standard compression dictionary and/or an operator-defined compression dictionary.
  • the compression dictionary includes an operator-defined compression dictionary
  • the processor 200 is further configured to:
  • the operator-defined compression dictionary is configured for the terminal through some or all of multicast, broadcast, and unicast.
  • the first terminal in this embodiment of the present application includes:
  • the processor 300 is responsible for managing the bus architecture and general processing, and the memory 301 can store data used by the processor 300 when performing operations.
  • the transceiver 302 is configured to receive and transmit data under the control of the processor 300.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 300 and various circuits of memory represented by memory 301.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the processor 300 is responsible for managing the bus architecture and general processing, and the memory 301 can store data used by the processor 300 when performing operations.
  • the flow disclosed in the embodiment of the present application may be applied to the processor 300 or implemented by the processor 300.
  • each step of the signal processing flow may be completed by an integrated logic circuit of hardware in the processor 300 or an instruction in the form of software.
  • the processor 300 can be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or a transistor logic device, and a discrete hardware component, which can be implemented or executed in the embodiment of the present application.
  • a general purpose processor can be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 301, and the processor 300 reads the information in the memory 301 and completes the steps of the signal processing flow in conjunction with its hardware.
  • the processor 300 is configured to read a program in the memory 301 and perform the following processes:
  • the processor 300 is configured to read a program in the memory and perform the following processes:
  • the target compression dictionary is stored in the compression cache; the data packet to be sent is compressed by the compression buffer to obtain a UDC compressed data packet; and the UDC compressed data packet is sent.
  • the processor 300 is specifically configured to:
  • the remaining locations are supplemented with the set values; wherein the remaining locations include the first and/or the last of the compression cache; or
  • the capacity of the compression buffer is not greater than the target compression dictionary, the first N bits or the last N bits or the middle N bits of the target compression dictionary are stored into the compression buffer, where N is the capacity of the decompression buffer.
  • the processor 300 is configured to:
  • the compression dictionary with the highest priority is used as the target compression dictionary.
  • the processor 300 is further configured to:
  • the compression dictionary used for transmission of the network side device configuration is used as a target compression dictionary.
  • the processor 300 is further configured to:
  • the compression dictionary with the highest priority is used as the target compression dictionary according to the currently used compression dictionary priority or the compression of the compression dictionary that is not higher than the compression dictionary configured by the network side device.
  • the dictionary serves as a target compression dictionary.
  • the processor 300 is further configured to:
  • the preset padding information is stored in the compression cache.
  • the processor 300 is further configured to:
  • the compression dictionary identifier corresponding to the target compression dictionary is placed at the head of the UDC compressed data packet.
  • the processor 300 is further configured to:
  • the dictionary support capability information is sent to the network side device.
  • the dictionary support capability information includes some or all of the following:
  • the UDC compressed data packet is the first UDC compressed data packet that is initially transmitted or the first UDC compressed data packet after the compressed cache reset.
  • the first UDC compressed data packet is a first UDC compressed data packet after performing a compression cache reset
  • the processor 300 is further configured to:
  • the second network side device in this embodiment of the present application includes:
  • the processing module 400 is configured to store the target compression dictionary into the decompression cache;
  • the decompression module 401 is configured to perform a decompression operation on the received UDC compressed data packet by using a decompression buffer.
  • processing module 400 is specifically configured to:
  • the target compression dictionary is stored in the decompression buffer, and the remaining locations are supplemented with the set values; wherein the remaining locations include the first and/or the last of the decompression buffer;
  • the capacity of the decompression buffer is not greater than the target compression dictionary, the first N bits or the last N bits or the intermediate N bits of the target compression dictionary are stored into the decompression buffer, where N is the capacity of the decompression buffer.
  • processing module 400 is further configured to:
  • the decompression module 401 is further configured to:
  • the trigger processing module 400 performs the step of selecting an unused and highest priority compression dictionary as the target compression dictionary according to the compression dictionary priority until the cache check succeeds or there is no unused compression dictionary.
  • processing module 400 is further configured to:
  • the compression dictionary corresponding to the compressed dictionary identifier is used as the target compression dictionary.
  • processing module 400 is further configured to:
  • a compression dictionary used for transmission is configured for the terminal; a compression dictionary configured to the terminal is used as a target compression dictionary.
  • the decompression module 401 is further configured to:
  • the trigger processing module 400 selects an unused and highest priority compression dictionary as the target compression dictionary according to the compression dictionary priority until the cache check succeeds or there is no unused compression dictionary.
  • processing module 400 is further configured to:
  • the decompression module 401 After the cache verification fails by the decompression module 401, if there is no unused compression dictionary, the preset padding information is stored in the decompression buffer.
  • processing module 400 is specifically configured to:
  • the UDC compressed data packet is the first UDC compressed data packet that is initially transmitted or the first UDC compressed data packet after the compressed cache reset.
  • the first UDC compressed data packet is a first UDC compressed data packet after performing a compression cache reset
  • the decompression module 401 is further configured to:
  • the terminal After determining that the compression cache and the decompression buffer are out of synchronization, the terminal is notified to perform a cache reset.
  • the decompression module 401 is further configured to:
  • the notification information is included in the notification for notifying the terminal to configure the compression dictionary or the preset padding information used for the transmission.
  • the compression dictionary includes a standard compression dictionary and/or an operator-defined compression dictionary.
  • the compression dictionary includes an operator-defined compression dictionary
  • the processing module 400 is further configured to:
  • the operator-defined compression dictionary is configured for the terminal through some or all of multicast, broadcast, and unicast.
  • the second terminal in this embodiment of the present application includes:
  • a cache module 500 configured to store the target compression dictionary into the compression cache
  • a compression module 501 configured to compress, by using a compression buffer, a data packet to be sent to obtain a UDC compressed data packet;
  • the sending module 502 is configured to send the UDC compressed data packet.
  • the cache module 500 is specifically configured to:
  • the remaining locations are supplemented with the set values; wherein the remaining locations include the first and/or the last of the compression cache; or
  • the capacity of the compression buffer is not greater than the target compression dictionary, the first N bits or the last N bits or the middle N bits of the target compression dictionary are stored into the compression buffer, where N is the capacity of the decompression buffer.
  • the cache module 500 is further configured to:
  • the compression dictionary with the highest priority is used as the target compression dictionary.
  • the cache module 500 is further configured to:
  • the compression dictionary used for transmission of the network side device configuration is used as a target compression dictionary.
  • the cache module 500 is further configured to:
  • the compression dictionary with the highest priority is used as the target compression dictionary according to the currently used compression dictionary priority or the compression of the compression dictionary that is not higher than the compression dictionary configured by the network side device.
  • the dictionary serves as a target compression dictionary.
  • the cache module 500 is further configured to:
  • the preset padding information is stored in the compression cache.
  • the compression module 501 is further configured to:
  • the compression dictionary identifier corresponding to the target compression dictionary is placed at the head of the UDC compressed data packet.
  • the sending module 502 is further configured to:
  • the dictionary support capability information is sent to the network side device.
  • the dictionary support capability information includes some or all of the following:
  • the UDC compressed data packet is the first UDC compressed data packet that is initially transmitted or the first UDC compressed data packet after the compressed cache reset.
  • the first UDC compressed data packet is a first UDC compressed data packet after performing a compression cache reset
  • the sending module 502 is further configured to:
  • the embodiment of the present application provides a readable storage medium, including program code, when the program code is run on a computing device, the program code is used to cause the computing device to perform an action of a network side device in the system.
  • the embodiment of the present application further provides a readable storage medium, including program code, when the program code is run on a computing device, the program code is used to cause the computing device to perform an action of a terminal in the system.
  • the embodiment of the present application further provides a network side device for performing data receiving, and the device corresponding to the method is a network side device in a system for performing data transmission in the embodiment of the present application, and the method is
  • the principle of the problem is similar to that of the device, so the implementation of the method can be referred to the implementation of the system, and the repeated description will not be repeated.
  • the method for receiving data on the network side device in this embodiment of the present application includes:
  • Step 600 The network side device stores the target compression dictionary in the decompression cache.
  • Step 601 The network side device decompresses the received UDC compressed data packet by using a decompression buffer.
  • the network side device stores the target compression dictionary in the decompression cache, including:
  • the network side device stores the target compression dictionary in the decompression buffer, and the remaining locations supplement the set values; wherein the remaining locations include the front and/or the last of the decompression buffer. ;or
  • the network side device stores the first N bits or the last N bits or the intermediate N bits of the target compression dictionary to the decompression buffer, where N is the capacity of the decompression buffer.
  • the method further includes:
  • the network side device selects an unused and highest priority compression dictionary as the target compression dictionary according to the compression dictionary priority;
  • the network side device Before the network side device decompresses the received UDC compressed data packet by using the decompression buffer, the network side device further includes:
  • the network side device performs cache check according to the received UDC compressed data packet, and determines that the cache check succeeds;
  • the method also includes:
  • the network side device If the cache check fails, the network side device returns a step of selecting an unused and highest priority compression dictionary as the target compression dictionary according to the compression dictionary priority until the cache check succeeds or there is no unused compression dictionary.
  • the method further includes:
  • the network side device uses the compression dictionary corresponding to the compression dictionary identifier as the target compression dictionary.
  • the method further includes:
  • the network side device configures, for the terminal, a compression dictionary used for sending
  • the network side device uses a compression dictionary configured to the terminal as a target compression dictionary.
  • the method before the network side device decompresses the received UDC compressed data packet by using the decompression buffer, the method further includes:
  • the network side device performs cache check according to the received UDC compressed data packet, and determines that the cache check succeeds;
  • the method also includes:
  • the network side device selects an unused and highest priority compression dictionary as the target compression dictionary according to the compression dictionary priority until the cache check succeeds or there is no unused compression dictionary.
  • the method further includes:
  • the network side device After the cache verification fails, if there is no unused compression dictionary, the network side device stores the preset padding information in the decompression buffer, and decompresses the received UDC compressed data packet through the decompression buffer.
  • the network side device configures, for the terminal, a compression dictionary used for sending, including:
  • the network side device configures a compression dictionary used for sending and transmitting the terminal according to the dictionary support capability information and/or service information of the terminal.
  • the UDC compressed data packet is the first UDC compressed data packet that is initially transmitted or the first UDC compressed data packet after the compressed cache reset.
  • the first UDC compressed data packet is a first UDC compressed data packet after performing a compression cache reset
  • the method further includes:
  • the network side device After determining that the compression buffer and the decompression buffer are out of synchronization, the network side device notifies the terminal to perform a cache reset.
  • the method further includes:
  • the network side device carries, in the notification, indication information for notifying the terminal to configure a compression dictionary or preset padding information used for transmission.
  • the compression dictionary includes a standard compression dictionary and/or an operator-defined compression dictionary.
  • the compression dictionary includes an operator-defined compression dictionary
  • the method also includes:
  • the network side device configures the operator-defined compression dictionary for the terminal by using part or all of multicast, broadcast, and unicast.
  • a method for transmitting data by a terminal is also provided in the embodiment of the present application.
  • the device corresponding to the method is a terminal in a system for performing data transmission in the embodiment of the present application, and the principle and solution of the method are solved.
  • the device is similar, so the implementation of the method can be referred to the implementation of the system, and the details are not repeated here.
  • the method for transmitting data by the terminal in this embodiment of the present application includes:
  • Step 700 The terminal stores the target compression dictionary into the compression cache.
  • Step 701 The terminal compresses a data packet to be sent by using a compression buffer to obtain a UDC compressed data packet.
  • Step 702 The terminal sends the UDC compressed data packet.
  • the terminal stores the target compression dictionary into the compression cache, including:
  • the terminal stores the target compression dictionary into the compression cache, and the remaining locations supplement the set values; wherein the remaining locations include the first and/or the last of the compression cache;
  • the terminal stores the first N bits or the last N bits or the intermediate N bits of the target compression dictionary into the compression buffer, where N is the capacity of the decompression buffer.
  • the method before the terminal stores the target compression dictionary in the compression cache, the method further includes:
  • the terminal uses the compression dictionary with the highest priority as the target compression dictionary according to the currently used compression dictionary priority.
  • the method before the terminal stores the target compression dictionary in the compression cache, the method further includes:
  • the terminal uses a compression dictionary used for transmission of the network side device configuration as a target compression dictionary.
  • the method before the terminal stores the target compression dictionary in the compression cache, the method further includes:
  • the compression dictionary with the highest priority is used as the target compression dictionary according to the currently used compression dictionary priority or the compression dictionary of the network side device configuration is not higher.
  • the level of the compression dictionary serves as the target compression dictionary.
  • the method further includes:
  • the preset padding information is stored in the compression cache.
  • the method further includes:
  • the terminal places a compression dictionary identifier corresponding to the target compression dictionary in a header of the UDC compressed data packet.
  • the method before the terminal stores the target compression dictionary in the compression cache, the method further includes:
  • the terminal sends the dictionary support capability information to the network side device.
  • the dictionary support capability information includes some or all of the following:
  • the UDC compressed data packet is the first UDC compressed data packet that is initially transmitted or the first UDC compressed data packet after the compressed cache reset.
  • the first UDC compressed data packet is a first UDC compressed data packet after performing a compression cache reset
  • the method further includes:
  • the terminal Before the terminal sends the UDC compressed data packet, the terminal further includes:
  • the terminal carries a reset indication and/or a compression dictionary identifier corresponding to the target compression dictionary in a header of the UDC compressed data packet.
  • the application can also be implemented in hardware and/or software (including firmware, resident software, microcode, etc.). Still further, the application can take the form of a computer program product on a computer usable or computer readable storage medium having computer usable or computer readable program code embodied in a medium for use by an instruction execution system or Used in conjunction with the instruction execution system.
  • a computer usable or computer readable medium can be any medium that can contain, store, communicate, communicate, or transport a program for use by an instruction execution system, apparatus or device, or in conjunction with an instruction execution system, Used by the device or device.

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Abstract

本申请实施例涉及一种进行数据传输的方法和设备,用以解决现有技术中在缓存初始化或因为缓存不同步进行重置后,如何进行数据传输还没有明确方案的问题。本申请实施例网络侧设备通过解压缓存中的目标压缩字典对收到的UDC压缩数据包进行解压操作;终端通过压缩缓存中的目标压缩字典对需要发送的数据包进行压缩得到UDC压缩数据包并发送。由于网络侧设备和终端可以通过目标压缩字典进行解压操作和压缩,从而在缓存初始化或因为缓存不同步进行重置后,提高了进行数据传输的成功率;进一步提高传输效率,节省空口资源。

Description

一种进行数据传输的方法和设备
本申请要求在2017年11月27日提交中国专利局、申请号为201711208102.2、申请名称为“一种进行数据传输的方法和设备”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信技术领域,特别涉及一种进行数据传输的方法和设备。
背景技术
长期演进(Long Term Evolution,LTE)/长期演进升级(Long Term Evolution-Advanced,LTE-A)中,终端可以配置上行数据压缩(UL data compression,UDC)功能。上行数据压缩就是终端在层二对上行数据或者信令进行压缩,基站侧在对应协议层对压缩的数据进行解压操作缩,目的是节省空口传输的数据量,节约上行资源,提升传输效率。
为了提高压缩率,终端和基站侧根据发送和接收的数据各自独立维护缓存。一般情况下,缓存中可以存放两类内容:一个是预配置的高匹配概率内容,例如通用的超级文本传送协议(Hyper Text Transport Protocol,HTTP)头中Host:、Accept:等内容;另一个是之前发送或接收的数据包内容,例如连续数据包发送时,可以将前面的数据包加入缓存,后续的数据包内容根据前面的数据包内容进行匹配。
但是对于缓存初始化或因为缓存不同步缓存进行重置后,如何进行数据传输还没有明确的方案。
发明内容
本申请提供一种进行数据传输的方法和设备,用以解决现有技术中在缓存初始化或因为缓存不同步进行重置后,如何进行数据传输还没有明确方案的问题。
第一方面,本申请实施例提供的一种进行数据传输的方法,该方法包括:
网络侧设备将目标压缩字典存储到解压缓存中;
所述网络侧设备通过解压缓存对收到的UDC压缩数据包进行解压操作。
可选的,所述网络侧设备将目标压缩字典存储到解压缓存中,包括:
若解压缓存的容量大于目标压缩字典,则所述网络侧设备将目标压缩字典存储到解压缓存中,其余位置补充设定值;其中所述其余位置包括所述解压缓存最前面和/或最后面; 或
若解压缓存的容量不大于目标压缩字典,则所述网络侧设备将目标压缩字典前N比特或后N比特或中间N比特存储到解压缓存,N为解压缓存的容量。
可选的,所述网络侧设备将目标压缩字典存储到解压缓存中之前,还包括:
所述网络侧设备按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典;
所述网络侧设备通过解压缓存对收到的UDC压缩数据包进行解压操作之前,还包括:
所述网络侧设备根据收到的UDC压缩数据包进行缓存校验,且确定缓存校验成功;
该方法还包括:
若缓存校验失败,则所述网络侧设备返回按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典的步骤,直到缓存校验成功或没有未使用的压缩字典。
可选的,所述网络侧设备将目标压缩字典存储到解压缓存中之前,还包括:
若所述网络侧设备接收到的UDC压缩数据包的头部包括压缩字典标识,则所述网络侧设备将所述压缩字典标识对应的压缩字典作为目标压缩字典。
可选的,所述网络侧设备将目标压缩字典存储到解压缓存中之前,还包括:
所述网络侧设备为所述终端配置发送使用的压缩字典;
所述网络侧设备将配置给终端的压缩字典作为目标压缩字典。
可选的,所述网络侧设备通过解压缓存对收到的UDC压缩数据包进行解压操作之前,还包括:
所述网络侧设备根据收到的UDC压缩数据包进行缓存校验,且确定缓存校验成功;
该方法还包括:
若缓存校验失败,则所述网络侧设备按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典,直到缓存校验成功或没有未使用的压缩字典。
第二方面,本申请实施例一种进行数据传输的方法,该方法包括:
终端将目标压缩字典存储到压缩缓存中;
所述终端通过压缩缓存对需要发送的数据包进行压缩得到UDC压缩数据包;
所述终端发送所述UDC压缩数据包。
可选的,所述终端将目标压缩字典存储到压缩缓存中,包括:
若压缩缓存的容量大于目标压缩字典,则所述终端将目标压缩字典存储到压缩缓存中,其余位置补充设定值;其中所述其余位置包括所述压缩缓存最前面和/或最后面;或
若压缩缓存的容量不大于目标压缩字典,则所述终端将目标压缩字典前N比特或后N比特或中间N比特存储到压缩缓存,N为解压缓存的容量。
可选的,所述终端将目标压缩字典存储到压缩缓存中之前,还包括:
所述终端按照当前使用的压缩字典优先级,将优先级最高的压缩字典作为目标压缩字典。
可选的,所述终端将目标压缩字典存储到压缩缓存中之前,还包括:
所述终端将所述网络侧设备配置的发送使用的压缩字典作为目标压缩字典。
可选的,所述终端将目标压缩字典存储到压缩缓存中之前,还包括:
若所述终端没有所述网络侧设备配置的压缩字典,则按照当前使用的压缩字典优先级,将优先级最高的压缩字典作为目标压缩字典或将不高于网络侧设备配置的压缩字典的优先级的压缩字典作为目标压缩字典。
第三方面,本申请实施例提供的一种进行数据传输的网络侧设备,该网络侧设备包括:处理器、存储器和收发机;
处理器,用于读取存储器中的程序并执行下列过程:
将目标压缩字典存储到解压缓存中;通过解压缓存对收到的UDC压缩数据包进行解压操作。
第四方面,本申请实施例提供的一种进行数据传输的终端,该终端包括:处理器、存储器和收发机;
处理器,用于读取存储器中的程序并执行下列过程:
将目标压缩字典存储到压缩缓存中;通过压缩缓存对需要发送的数据包进行压缩得到UDC压缩数据包;发送所述UDC压缩数据包。
第五方面,本申请实施例提供的一种进行数据传输的网络侧设备,该网络侧设备包括:
处理模块,用于将目标压缩字典存储到解压缓存中;
解压模块,用于通过解压缓存对收到的UDC压缩数据包进行解压操作。
第六方面,本申请实施例提供的一种进行数据传输的终端,该终端包括:
缓存模块,用于将目标压缩字典存储到压缩缓存中;
压缩模块,用于通过压缩缓存对需要发送的数据包进行压缩得到UDC压缩数据包;
发送模块,用于发送所述UDC压缩数据包。
第七方面,本申请实施例提供的一种缓存同步异常设备可读存储介质,包括程序代码,当所述程序代码在计算设备上运行时,所述程序代码用于使所述计算设备执行上述第一方面任一所述方法的步骤或第二方面任一所述方法的步骤。
本申请实施例网络侧设备通过解压缓存中的目标压缩字典对收到的UDC压缩数据包进行解压操作;终端通过压缩缓存中的目标压缩字典对需要发送的数据包进行压缩得到UDC压缩数据包并发送。由于网络侧设备和终端可以通过目标压缩字典进行解压操作和压缩,从而在缓存初始化或因为缓存不同步进行重置后,提高了进行数据传输的成功率;进一步提高传输效率,节省空口资源。
附图说明
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简要介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域的普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本申请实施例进行数据传输的系统结构示意图;
图2为本申请实施例第一种网络侧设备的结构示意图;
图3为本申请实施例第一种终端的结构示意图;
图4为本申请实施例第二种网络侧设备的结构示意图;
图5为本申请实施例第二种终端的结构示意图;
图6为本申请实施例网络侧设备进行数据接收的方法流程示意图;
图7为本申请实施例终端进行数据发送的方法流程示意图。
具体实施方式
以下,对本申请实施例中的部分用语进行解释说明,以便于本领域技术人员理解。
(1)本申请实施例中,名词“网络”和“系统”经常交替使用,但本领域的技术人员可以理解其含义。
(2)本申请实施例中术语“多个”是指两个或两个以上,其它量词与之类似。
(3)“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
为了使本申请的目的、技术方案和优点更加清楚,下面将结合附图对本申请作进一步地详细描述,显然,所描述的实施例仅仅是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本申请保护的范围。
如图1所示,本申请实施例进行数据传输的系统包括:网络侧设备10和终端20。
网络侧设备10,用于将目标压缩字典存储到解压缓存中;通过解压缓存对收到的UDC压缩数据包进行解压操作。
终端20,用于将目标压缩字典存储到压缩缓存中;通过压缩缓存对需要发送的数据包进行压缩得到UDC压缩数据包;发送所述UDC压缩数据包。
本申请实施例网络侧设备通过解压缓存中的目标压缩字典对收到的UDC压缩数据包进行解压操作;终端通过压缩缓存中的目标压缩字典对需要发送的数据包进行压缩得到UDC压缩数据包并发送。由于网络侧设备和终端可以通过目标压缩字典进行解压操作和压缩,从而在缓存初始化或因为缓存不同步进行重置后,提高了进行数据传输的成功率;进一步提高传输效率,节省空口资源。
其中,本申请实施例的网络侧设备可以是基站(比如宏基站,演进基站、家庭基站等),也可以是中继(RN,Relay Node)设备,还可以是其它网络侧设备。
本申请实施例的压缩字典是指一些已有的压缩内容参考值,以这些信息作为压缩缓存的初始值,可以对初期的压缩带来较好的压缩效率,否则如果从全0的压缩缓存开始进行,相当于初期的数据包无法进行压缩,没有任何的压缩内容参考值。
在实施中,压缩字典在接收端和发送端获得同步,即两端所使用的压缩字典信息保持一致,这样能够保证压缩和解压操作正常进行。
本申请实施例的压缩字典包括标准压缩字典和/或运营商自定义的压缩字典。
标准压缩字典一般用于比较特定的业务,比如针对基于IP的语音呼叫(Voice over IP,VoIP)业务的会话初始化协议(Session Initiated Protocol,SIP)信令,国际互联网工程任务组织(The Internet Engineering Task Force,IETF)标准化了一套专门的压缩字典RFC3485。标准压缩字典只需要终端和网络侧设备分别在出厂或者更新的时候将标准压缩字典加载进去,即可后续使用。
运营商自定义的压缩字典一般可以更灵活的定义压缩字典,比如运营商根据某种业务的大数据统计或者后台统计,获得高频出现的内容将其做成运营商自定义的压缩字典,运营商可以将不同业务适用的压缩字典,标记成不同的ID,例如定义压缩字典1用于文件传输协议(File Transfer Protocol,FTP)业务,压缩字典2用于超级文本传送协议(Hyper Text Transport Protocol,HTTP)业务,压缩字典3用于及时消息业务等。运营商还可以对压缩字典进行更新,并针对不同的更新,给予详细的版本记录,例如版本1是2017年6月发布的,版本2是2017年10月发布的。
在实施中,对于标准压缩字典,由网络厂商和终端厂商分别根据标准来实现即可。
对于运营商自定义的压缩字典由于具有动态和灵活的特性,需要由运营商下发给用户。
具体的,所述网络侧设备通过多播、广播和单播中的部分或全部方式,为终端配置所述运营商自定义的压缩字典。
如果网络侧设备采用广播或多播的形式发送,网络侧设备需要提前预告发送的时间以及发送方式的具体信息,以便于终端可以获得该广播或多播的压缩字典,这种方式效率高,一次性可以通知到几乎所有的开机用户。
如果网络侧设备采用单播的形式发送,网络侧设备每次发送给一个用户。对于单播形式发送的方式有很多,下面列举几种:
1、当终端进行业务传输时,可以在需要发送给终端的信息中携带字典信息发送给终端;
2、设置至少一个网络空闲时段,比如23点到5点,当处于空闲时段时,可以将压缩字典发送给用户;
3、给终端发送通知,由终端通知用户决定是否接收以及何时接收压缩字典。
需要说明的是,上述3种方式只是举例说明,任何能够将压缩字典通过单播发送给终端的方式都适用本申请实施例。
在实施中,网络侧设备需要将目标压缩字典存储到解压缓存中,终端需要将目标压缩字典存储到压缩缓存中。
由于解压缓存的容量和目标压缩字典的大小不同,压缩缓存的容量和目标压缩字典的大小不同,具体缓存的方式也不一样。
缓存方式一、解压缓存的容量大于目标压缩字典的大小,即整个目标压缩字典都可以存储到解压缓存中,并且还会有剩余位置。
具体的,所述网络侧设备将目标压缩字典存储到解压缓存中,其余位置补充设定值;其中所述其余位置包括所述解压缓存最前面和/或最后面。
1、可以将目标目标压缩字典息的尾部与解压缓存的尾部进行对齐放置,并在解压缓存前面多出的空间中采取补充设定值的操作。
比如设定值是0,解压缓存的容量是100,目标目标压缩字典的大小是80,则目标目标压缩字典占用压缩缓存后80的位置,前20的位置可以补0。
2、可以将目标目标压缩字典息的头部与解压缓存的头部进行对齐放置,并在解压缓存前面多出的空间中采取补充设定值的操作
比如设定值是0,解压缓存的容量是100,目标目标压缩字典的大小是80,则目标目 标压缩字典占用压缩缓存前80的位置,后20的位置可以补0。
对于终端侧:
若压缩缓存的容量大于目标压缩字典,则所述终端将目标压缩字典存储到解压缓存中,其余位置补充设定值;其中所述其余位置包括所述压缩缓存最前面和/或最后面。
具体的过程与网络侧设备类似,在此不再赘述。
缓存方式二、若解压缓存的容量不大于目标压缩字典,则所述网络侧设备将目标压缩字典前N比特或后N比特或中间N比特存储到解压缓存,N为解压缓存的容量。
1、目标压缩字典和解压缓存二者头对齐,多余目标压缩字典内容删除,保持解压缓存中的内容为目标压缩字典前部的内容。
比如解压缓存的容量是80,目标目标压缩字典的大小是100,则将目标目标压缩字典前80的位置存储到解压缓存中。
2、目标压缩字典和解压缓存二者尾部对齐,多余目标压缩字典内容删除,保持解压缓存中的内容为目标压缩字典后部的内容。
比如解压缓存的容量是80,目标目标压缩字典的大小是100,则将目标目标压缩字典后80的位置存储到解压缓存中。
3、解压缓存从目标压缩字典中间截取,多余的两头目标压缩字典的内容删除,保持解压缓存中的内容为目标压缩字典中部的内容。
比如解压缓存的容量是80,目标目标压缩字典的大小是100,则将目标目标压缩字典第10~90的位置存储到解压缓存中。这里前后选取时也可以不对称选取,但是需要保证终端和网络侧设备选取的位置相同。
如果解压缓存的容量等于目标目标压缩字典,则将目标目标压缩字典整个存储到解压缓存中。
对于终端侧:
若压缩缓存的容量不大于目标压缩字典,则所述终端将目标压缩字典前N比特或后N比特或中间N比特存储到解压缓存,N为压缩缓存的容量。
具体的过程与网络侧设备类似,在此不再赘述。
在实施中,网络侧设备可以为所述终端配置发送使用的压缩字典,也可以不为终端进行配置,下面分别进行说明。
一、网络侧设备为所述终端配置发送使用的压缩字典。
在实施中,网络侧设备为所述终端配置发送使用的压缩字典后可以将配置给终端的压缩字典作为目标压缩字典。比如网络侧设备通知终端本次发送使用的压缩字典的标识。
相应的,所述终端将所述网络侧设备配置的发送使用的压缩字典作为目标压缩字典。
在实施中,网络侧设备可以根据所述终端的字典支持能力信息和/或业务信息,为所述终端配置发送使用的压缩字典。
比如,当一个VoIP业务到达时,网络侧设备在配置相关的数据无线承载(Data Radio Bearer,DRB)时,可以告知UE启动VoIP业务相关的字典,例如RFC3485。
当一个HTTP业务到达时,UE(终端)又支持相关业务的预定义字典,则网络侧可以配置UE把预定义字典1作为压缩缓存的初始值,开始最初的压缩。
当到达的业务没有相对应的预定义字典,或者UE不支持运营商自定义的压缩字典时,网络侧设备可以配置终端把标准化的字典作为目标压缩字典;或者网络侧设备可以配置终端把预设填充信息(比如全0)存储到压缩缓存中。
其中,终端的字典支持能力信息可以是任何能够使网络侧设备确定终端支持哪些压缩字典的信息。
下面列举几种:
1、所述终端将字典支持能力信息发送给所述网络侧设备。
具体的,终端在进行能力上报的时候,可以携带自己的字典能力信息,例如是否支持运营商标准压缩字典、支持哪些运营商标准压缩字典、是否支持预定义的压缩字典、当前存储的预定义压缩字典的版本为多少等。
2、由于标准压缩字典比较容易支持,默认所有的终端只要支持UDC则自动支持标准压缩字典,则终端将是否支持UDC作为字典支持能力信息,只需要上报自己是否支持UDC;
相应的,若终端支持UDC,则网络侧设备可以确定UE支持标准压缩字典。
3、当网络侧设备在向终端下发最新的运营商自定义的压缩字典并获得成功之后(一般这种信息是通过确认(AM)模式进行发送,可以有隐式的无线链路控制(Radio Link Control,RLC)层的反馈判断终端是否接收成功,或者通过业务层的确认判断终端是否接收成功),那么网络侧设备可以记录该终端获得最新的运营商预定义字典信息,即终端的字典支持能力信息就是网络侧设备记录的最新的运营商预定义字典信息。
4、针对上面的3,下发运营商自定义的压缩字典的行为可能是由核心网发起的,因此核心网记录终端是否获得最新的运营商预定义字典信息,核心网可以将该内容在网络侧设备查询的时候,例如查询UE能力,发送给网络侧设备,以备网络侧设备配置UDC时使用。
需要说明的是,除了上面列举的终端的字典支持能力信息和/或业务信息,其他任何能够使网络侧设备确定终端发送使用的压缩字典的信息都适用本申请实施例。
所述终端在确定网络侧设备配置的发送使用的压缩字典后,如果终端有配置的压缩字典,可以将所述网络侧设备配置的发送使用的压缩字典作为目标压缩字典。
这里有一种可能是终端没有配置的压缩字典,这时终端需要选择一种压缩字典作为目标压缩字典。
1、终端有配置的压缩字典。
终端将配置的压缩字典作为目标压缩字典存储到压缩缓存中,通过压缩缓存对需要发送的数据包进行压缩得到UDC压缩数据包,并发送所述UDC压缩数据包。
2、终端没有配置的压缩字典,即终端不支持配置的压缩字典。
这种情况一般发生在网络侧设备对终端的字典支持能力情况了解不清楚,例如终端未上报字典支持的能力信息,或者终端虽然上报了字典支持能力,但终端当前存储的运营商自定义的压缩字典只有1到5,但网络侧设备要求用运营商自定义的压缩字典8,而运营商自定义的压缩字典8在终端并没有获得该内容。
终端按照当前使用的压缩字典优先级,将优先级最高的压缩字典作为目标压缩字典存储到压缩缓存中或将不高于网络侧设备配置的压缩字典的优先级的压缩字典作为目标压缩字典,通过压缩缓存对需要发送的数据包进行压缩得到UDC压缩数据包,并发送所述UDC压缩数据包。
比如压缩字典优先级从高到低为:运营商自定义的压缩字典A、运营商自定义的压缩字典B和标准压缩字典。
终端将运营商自定义的压缩字典A作为目标压缩字典存储到压缩缓存中,通过压缩缓存对需要发送的数据包进行压缩得到UDC压缩数据包,并发送所述UDC压缩数据包。
比如压缩字典优先级从高到低为:运营商自定义的压缩字典A、运营商自定义的压缩字典B和标准压缩字典。
网络侧设备配置的压缩字典C的优先级低于压缩字典A高于压缩字典B,则终端将运营商自定义的压缩字典C作为目标压缩字典存储到压缩缓存中,通过压缩缓存对需要发送的数据包进行压缩得到UDC压缩数据包,并发送所述UDC压缩数据包。这里也可以将标准压缩字典作为目标压缩字典存储到压缩缓存中。
在实施中,可以选择不高于网络侧设备配置的压缩字典的优先级中最高的压缩字典作为目标压缩字典。当然,也可以在不高于网络侧设备配置的压缩字典的优先级中随机或采用其他方式选择。
这里终端也可以不按照压缩字典优先级选择或者在压缩字典优先级中没有压缩字典或者没有网络侧设备配置的压缩字典时,将预设填充信息存储到解压缓存中,通过压缩缓 存对需要发送的数据包进行压缩得到UDC压缩数据包,并发送所述UDC压缩数据包。
其中,终端当前使用的压缩字典优先级可以根据终端所在的位置、当前时间等因素确定。
比如终端处于基站A下,则终端当前使用的压缩字典优先级是基站A对应的压缩字典优先级;终端又移动到基站B下,则终端当前使用的压缩字典优先级是基站B对应的压缩字典优先级。
不同基站由于所属的网络或者公共陆地移动网络(Public Land Mobile Network,PLMN)不同,所以对应的压缩字典优先级也可能不同。比如当UE处于本地基站的覆盖下时,可以将本地运营商预配置的字典作为最高优先级,标准化字典作为次优先级。而当该UE漫游到别的地区,处于漫游基站的覆盖之下时,这时候UE本地运营商预配置的字典就失效了,而漫游地运营商的预配置字典UE没有来得及获取,此时可以将标准化字典作为最高优先级。
一种特殊情况是网络侧设备为终端配置预设填充信息(比如全0),则终端将预设填充信息存储到解压缓存中。
可选的,终端如果是用目标压缩字典进行压缩,则终端还可以将所述目标压缩字典对应的压缩字典标识置于所述UDC压缩数据包的头部。
这里的压缩字典标识可以是标准压缩字典的标识或运营商自定义的压缩字典的标识。
对于网络侧设备,如果接收到的UDC压缩数据包的头部包括压缩字典标识,则所述网络侧设备将所述压缩字典标识对应的压缩字典作为目标压缩字典,并将目标压缩字典存储到解压缓存中;通过解压缓存对收到的UDC压缩数据包进行解压操作。
如果接收到的UDC压缩数据包的头部不包括压缩字典标识,网络侧设备可以将配置给终端的压缩字典作为目标压缩字典进行解压操作;
如果缓存校验失败,则网络侧设备按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典,直到缓存校验成功或没有未使用的压缩字典。
比如压缩字典优先级从高到低为:运营商自定义的压缩字典A、运营商自定义的压缩字典B和标准压缩字典。
如果网络侧设备为终端配置运营商自定义的压缩字典A,网络侧设备用运营商自定义的压缩字典A缓存校验失败,则网络侧设备按照压缩字典优先级先选择运营商自定义的压缩字典B作为目标压缩字典进行解压操作;若缓存校验成功,则不再选择,若缓存校验失败,则继续选择标准压缩字典作为目标压缩字典进行解压操作。
可选的,在缓存校验失败后,若没有未使用的压缩字典,则所述网络侧设备将预设填 充信息存储到解压缓存中,并通过解压缓存对收到的UDC压缩数据包进行解压操作。
继续上一个例子,若网络侧设备选择标准压缩字典作为目标压缩字典进行缓存校验失败,由于没有未使用的压缩字典,则网络侧设备将预设填充信息(比如全0)存储到解压缓存中,并通过解压缓存对收到的UDC压缩数据包进行解压操作。
在实施中,如果终端将预设填充信息存储到解压缓存中,则终端还可以在UDC压缩数据包中携带通知信息,用于通知网络侧设备终端未使用压缩字典进行压缩或用于通知网络侧设备终端使用预设填充信息进行压缩。
对于网络侧设备来说,在接收到第一个UDC压缩数据包时,先按照配置给终端的压缩字典,尝试进行缓存校验,如果成功,则说明终端使用了配置的压缩字典信息,则后续可以正常解压缩和处理数据包。如果不成功,则说明终端不支持配置的压缩字典,此时网络侧设备采取向下一个压缩字典优优先级依次尝试的方法,直到缓存校验成功,成功地那个缓存初始值即为终端选择的压缩缓存的初始值,那么网络侧设备也把该值作为解压缓存的初始值,进行后续的解压和后续包的处理。
这里的第一个UDC压缩数据包是初始传输的第一个UDC压缩数据包或进行压缩缓存重置后的第一个UDC压缩数据包。
二、网络侧设备不为所述终端配置发送使用的压缩字典。
由于网络侧设备不为终端配置发送使用的压缩字典,所以终端需要按照当前使用的压缩字典优先级,将优先级最高的压缩字典作为目标压缩字典,或者直接将预设填充信息存储到压缩缓存中。
比如压缩字典优先级从高到低为:运营商自定义的压缩字典A、运营商自定义的压缩字典B和标准压缩字典。终端将运营商自定义的压缩字典A作为目标压缩字典存储到压缩缓存中,通过压缩缓存对需要发送的数据包进行压缩得到UDC压缩数据包,并发送所述UDC压缩数据包。
其中,终端当前使用的压缩字典优先级可以根据终端所在的位置、当前时间等因素确定。
比如终端处于基站A下,则终端当前使用的压缩字典优先级是基站A对应的压缩字典优先级;终端又移动到基站B下,则终端当前使用的压缩字典优先级是基站B对应的压缩字典优先级。
不同基站由于所属的网络或者PLMN不同,所以对应的压缩字典优先级也可能不同。比如当UE处于本地基站的覆盖下时,可以将本地运营商预配置的字典作为最高优先级,标准化字典作为次优先级。而当该UE漫游到别的地区,处于漫游基站的覆盖之下时,这 时候UE本地运营商预配置的字典就失效了,而漫游地运营商的预配置字典UE没有来得及获取,此时可以将标准化字典作为最高优先级。
可选的,终端如果是用目标压缩字典进行压缩,则终端还可以将所述目标压缩字典对应的压缩字典标识置于所述UDC压缩数据包的头部。
这里的压缩字典标识可以是标准压缩字典的标识或运营商自定义的压缩字典的标识。
如果终端将预设填充信息存储到解压缓存中,则终端还可以在UDC压缩数据包中携带通知信息,用于通知网络侧设备终端未使用压缩字典进行压缩或用于通知网络侧设备终端使用预设填充信息进行压缩。
对于网络侧设备,如果接收到的UDC压缩数据包的头部包括压缩字典标识,则所述网络侧设备将所述压缩字典标识对应的压缩字典作为目标压缩字典,并将目标压缩字典存储到解压缓存中;通过解压缓存对收到的UDC压缩数据包进行解压操作。
如果接收到的UDC压缩数据包的头部包括通知信息,则网络侧设备将预设填充信息存储到解压缓存中;通过解压缓存对收到的UDC压缩数据包进行解压操作。
如果接收到的UDC压缩数据包的头部不包括压缩字典标识,网络侧设备可以按照当前使用的压缩字典优先级,将优先级最高的压缩字典作为目标压缩字典,通过解压缓存对收到的UDC压缩数据包进行解压操作。
具体的,所述网络侧设备按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典,通过解压缓存对收到的UDC压缩数据包进行解压操作;
若缓存校验失败,则所述网络侧设备返回按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典的步骤,直到缓存校验成功或没有未使用的压缩字典。
比如压缩字典优先级从高到低为:运营商自定义的压缩字典A、运营商自定义的压缩字典B和标准压缩字典。
网络侧设备按照压缩字典优先级先选择运营商自定义的压缩字典A作为目标压缩字典进行解压操作;若缓存校验成功,则不再选择,若缓存校验失败,则网络侧设备按照压缩字典优先级先选择运营商自定义的压缩字典B作为目标压缩字典进行解压操作;若缓存校验成功,则不再选择,若缓存校验失败,则继续选择标准压缩字典作为目标压缩字典进行解压操作。
可选的,在缓存校验失败后,若没有未使用的压缩字典,则所述网络侧设备将预设填充信息存储到解压缓存中,并通过解压缓存对收到的UDC压缩数据包进行解压操作。
继续上一个例子,若网络侧设备选择标准压缩字典作为目标压缩字典进行缓存校验失 败,由于没有未使用的压缩字典,则网络侧设备将预设填充信息(比如全0)存储到解压缓存中,并通过解压缓存对收到的UDC压缩数据包进行解压操作。
对于网络侧设备来说,在接收到第一个UDC压缩数据包时,采取压缩字典优优先级依次尝试的方法,直到缓存校验成功,成功地那个缓存初始值即为终端选择的压缩缓存的初始值,那么网络侧设备也把该值作为解压缓存的初始值,进行后续的解压和后续包的处理。
这里的第一个UDC压缩数据包是初始传输的第一个UDC压缩数据包或进行压缩缓存重置后的第一个UDC压缩数据包。
在实施中,如果终端和网络侧设备初始化的压缩缓存内容不一致或者中间出现异常情况造成了缓存验证失败,就需要启动恢复过程。
例如传输过程中数据丢失,造成压缩缓存和解压缓存中的数据不一样,由于两端所使用的缓存不一致,在缓存校验环节中,就会失败,这时候对于网络侧设备就可以判断出现了缓存失步,需要启动恢复过程重新获得缓存的同步。
缓存校验失败的恢复过程一般包括如下步骤:
1、网络侧设备发现缓存校验失败,向终端指示该缓存校验失败。
可选的,此时也可以携带推荐的复位的缓存初始值(即携带用于通知终端配置发送使用的压缩字典或预设填充信息的指示信息,比如压缩字典标识或者表示采用预设填充值的信息)。
例如当使用运营商自定义的压缩字典作为初始值时,如果第一个UDC压缩数据包开始就出现了缓存校验失败,说明两侧使用的运营商自定义的压缩字典不一致,此时再进行缓存复位时,初始值可以选择标准化字典或者预设填充值(比如全0)作为缓存初始值。
例如如果使用标准压缩字典作为初始值,第一个UDC压缩数据包开始就出现了缓存校验失败,说明两侧的标准压缩字典出现异常,此时再进行缓存复位时,初始值可以选择预设填充值(比如全0)作为缓存初始值。
2、终端接收到缓存校验失败指示,需要复位缓存,如果网络侧设备携带了复位的缓存初始值,则按照该缓存初始值进行复位,如果没有携带,则默认复位为标准化字典或预设填充值。
3、终端在复位缓存之后发送的第一个UDC压缩数据包里,显示携带复位指示和/或目标压缩字典对应的压缩字典标识,告知接收端从这个包开始复位。
这里的复位指示可以是一个指示信息。
4、网络侧设备接收到第一个携带复位指示的UDC压缩数据包后,复位解压缓存,如 果有约定或者配置则按照约定或者配置的初始值作为复位之后的解压缓存的初始值;
如果没有约定或者配置,则网络侧设备可以按照上面介绍的方式依次尝试不同的压缩字典和预设填重置进行缓存校验,选择缓存校验成功的那个缓存初始值作为复位之后的缓存初始值,之后开始正常的解压和处理数据包。
如果随同复位指示一起还接收到目标压缩字典对应的压缩字典标识,或者网络侧设备接收到第一个携带复位指示的UDC压缩数据包中没有复位指示,有目标压缩字典对应的压缩字典标识,则网络侧设备可以将压缩字典标识对应的压缩字典作为目标压缩字典进行缓存校验。
需要说明的是,上述缓存初始值就是解压缓存中存储的信息。
如图2所示,本申请实施例第一种网络侧设备包括:处理器200、存储器201和收发机202;
处理器200负责管理总线架构和通常的处理,存储器201可以存储处理器200在执行操作时所使用的数据。收发机202用于在处理器200的控制下接收和发送数据。
总线架构可以包括任意数量的互联的总线和桥,具体由处理器200代表的一个或多个处理器和存储器201代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。处理器200负责管理总线架构和通常的处理,存储器201可以存储处理器200在执行操作时所使用的数据。
本申请实施例揭示的流程,可以应用于处理器200中,或者由处理器200实现。在实现过程中,信号处理流程的各步骤可以通过处理器200中的硬件的集成逻辑电路或者软件形式的指令完成。处理器200可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件,可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器201,处理器200读取存储器201中的信息,结合其硬件完成信号处理流程的步骤。
其中,处理器200,用于读取存储器201中的程序并执行下列过程:
将目标压缩字典存储到解压缓存中;通过解压缓存对收到的UDC压缩数据包进行解压操作。
可选的,所述处理器200具体用于:
若解压缓存的容量大于目标压缩字典,则将目标压缩字典存储到解压缓存中,其余位置补充设定值;其中所述其余位置包括所述解压缓存最前面和/或最后面;或
若解压缓存的容量不大于目标压缩字典,则将目标压缩字典前N比特或后N比特或中间N比特存储到解压缓存,N为解压缓存的容量。
可选的,所述处理器200还用于:
按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典;
通过解压缓存对收到的UDC压缩数据包进行解压操作之前,根据收到的UDC压缩数据包进行缓存校验,且确定缓存校验成功;
若缓存校验失败,则返回按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典的步骤,直到缓存校验成功或没有未使用的压缩字典。
可选的,所述处理器200还用于:
若接收到的UDC压缩数据包的头部包括压缩字典标识,则将所述压缩字典标识对应的压缩字典作为目标压缩字典。
可选的,所述处理器200还用于:
为所述终端配置发送使用的压缩字典;将配置给终端的压缩字典作为目标压缩字典。
可选的,所述处理器200还用于:
通过解压缓存对收到的UDC压缩数据包进行解压操作之前,根据收到的UDC压缩数据包进行缓存校验,且确定缓存校验成功;
若缓存校验失败,则按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典,直到缓存校验成功或没有未使用的压缩字典。
可选的,所述处理器200还用于:
在缓存校验失败后,若没有未使用的压缩字典,则将预设填充信息存储到解压缓存中,并通过解压缓存对收到的UDC压缩数据包进行解压操作。
可选的,所述处理器200具体用于:
根据所述终端的字典支持能力信息和/或业务信息,为所述终端配置发送使用的压缩字典。
可选的,所述UDC压缩数据包是初始传输的第一个UDC压缩数据包或进行压缩缓存重置后的第一个UDC压缩数据包。
可选的,所述第一个UDC压缩数据包是进行压缩缓存重置后的第一个UDC压缩数据包;
所述处理器还用于:
在确定压缩缓存和解压缓存不同步后,通知所述终端进行缓存复位。
可选的,所述处理器200还用于:
在所述通知中携带用于通知终端配置发送使用的压缩字典或预设填充信息的指示信息。
可选的,所述压缩字典包括标准压缩字典和/或运营商自定义的压缩字典。
可选的,所述压缩字典包括运营商自定义的压缩字典;
所述处理器200还用于:
通过多播、广播和单播中的部分或全部方式,为终端配置所述运营商自定义的压缩字典。
如图3所示,本申请实施例第一种终端包括:
处理器300负责管理总线架构和通常的处理,存储器301可以存储处理器300在执行操作时所使用的数据。收发机302用于在处理器300的控制下接收和发送数据。
总线架构可以包括任意数量的互联的总线和桥,具体由处理器300代表的一个或多个处理器和存储器301代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。处理器300负责管理总线架构和通常的处理,存储器301可以存储处理器300在执行操作时所使用的数据。
本申请实施例揭示的流程,可以应用于处理器300中,或者由处理器300实现。在实现过程中,信号处理流程的各步骤可以通过处理器300中的硬件的集成逻辑电路或者软件形式的指令完成。处理器300可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件,可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成,或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器301,处理器300读取存储器301中的信息,结合其硬件完成信号处理流程的步骤。
其中,处理器300,用于读取存储器301中的程序并执行下列过程:
处理器300,用于读取存储器中的程序并执行下列过程:
将目标压缩字典存储到压缩缓存中;通过压缩缓存对需要发送的数据包进行压缩得到 UDC压缩数据包;发送所述UDC压缩数据包。
可选的,所述处理器300具体用于:
若压缩缓存的容量大于目标压缩字典,则将目标压缩字典存储到压缩缓存中,其余位置补充设定值;其中所述其余位置包括所述压缩缓存最前面和/或最后面;或
若压缩缓存的容量不大于目标压缩字典,则将目标压缩字典前N比特或后N比特或中间N比特存储到压缩缓存,N为解压缓存的容量。
可选的,所述处理器300用于:
按照当前使用的压缩字典优先级,将优先级最高的压缩字典作为目标压缩字典。
可选的,所述处理器300还用于:
将所述网络侧设备配置的发送使用的压缩字典作为目标压缩字典。
可选的,所述处理器300还用于:
若没有所述网络侧设备配置的压缩字典,则按照当前使用的压缩字典优先级,将优先级最高的压缩字典作为目标压缩字典或将不高于网络侧设备配置的压缩字典的优先级的压缩字典作为目标压缩字典。
可选的,所述处理器300还用于:
若没有所述网络侧设备配置的压缩字典,则将预设填充信息存储到压缩缓存中。
可选的,所述处理器300还用于:
将所述目标压缩字典对应的压缩字典标识置于所述UDC压缩数据包的头部。
可选的,所述处理器300还用于:
将字典支持能力信息发送给所述网络侧设备。
可选的,所述字典支持能力信息包括下列中的部分或全部:
是否支持标准压缩字典;
是否支持运营商自定义压缩字典;
支持运营商自定义的压缩字典的详细信息
可选的,所述UDC压缩数据包是初始传输的第一个UDC压缩数据包或进行压缩缓存重置后的第一个UDC压缩数据包。
可选的,所述第一个UDC压缩数据包是进行压缩缓存重置后的第一个UDC压缩数据包;
所述处理器300还用于:
接收到所述网络侧设备通知的缓存复位指示;在所述UDC压缩数据包的头部携带复位指示和/或所述目标压缩字典对应的压缩字典标识。
如图4所示,本申请实施例第二种网络侧设备包括:
处理模块400,用于将目标压缩字典存储到解压缓存中;
解压模块401,用于通过解压缓存对收到的UDC压缩数据包进行解压操作。
可选的,所述处理模块400具体用于:
若解压缓存的容量大于目标压缩字典,则将目标压缩字典存储到解压缓存中,其余位置补充设定值;其中所述其余位置包括所述解压缓存最前面和/或最后面;或
若解压缓存的容量不大于目标压缩字典,则将目标压缩字典前N比特或后N比特或中间N比特存储到解压缓存,N为解压缓存的容量。
可选的,所述处理模块400还用于:
按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典;
所述解压模块401还用于:
通过解压缓存对收到的UDC压缩数据包进行解压操作之前,根据收到的UDC压缩数据包进行缓存校验,且确定缓存校验成功;
若缓存校验失败,则触发处理模块400执行按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典的步骤,直到缓存校验成功或没有未使用的压缩字典。
可选的,所述处理模块400还用于:
若接收到的UDC压缩数据包的头部包括压缩字典标识,则将所述压缩字典标识对应的压缩字典作为目标压缩字典。
可选的,所述处理模块400还用于:
为所述终端配置发送使用的压缩字典;将配置给终端的压缩字典作为目标压缩字典。
可选的,所述解压模块401还用于:
通过解压缓存对收到的UDC压缩数据包进行解压操作之前,根据收到的UDC压缩数据包进行缓存校验,且确定缓存校验成功;
若缓存校验失败,则触发处理模块400按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典,直到缓存校验成功或没有未使用的压缩字典。
可选的,所述处理模块400还用于:
在所述解压模块401缓存校验失败后,若没有未使用的压缩字典,则将预设填充信息存储到解压缓存中。
可选的,所述处理模块400具体用于:
根据所述终端的字典支持能力信息和/或业务信息,为所述终端配置发送使用的压缩字 典。
可选的,所述UDC压缩数据包是初始传输的第一个UDC压缩数据包或进行压缩缓存重置后的第一个UDC压缩数据包。
可选的,所述第一个UDC压缩数据包是进行压缩缓存重置后的第一个UDC压缩数据包;
所述解压模块401还用于:
在确定压缩缓存和解压缓存不同步后,通知所述终端进行缓存复位。
可选的,所述解压模块401还用于:
在所述通知中携带用于通知终端配置发送使用的压缩字典或预设填充信息的指示信息。
可选的,所述压缩字典包括标准压缩字典和/或运营商自定义的压缩字典。
可选的,所述压缩字典包括运营商自定义的压缩字典;
所述处理模块400还用于:
通过多播、广播和单播中的部分或全部方式,为终端配置所述运营商自定义的压缩字典。
如图5所示,本申请实施例第二种终端包括:
缓存模块500,用于将目标压缩字典存储到压缩缓存中;
压缩模块501,用于通过压缩缓存对需要发送的数据包进行压缩得到UDC压缩数据包;
发送模块502,用于发送所述UDC压缩数据包。
可选的,所述缓存模块500具体用于:
若压缩缓存的容量大于目标压缩字典,则将目标压缩字典存储到压缩缓存中,其余位置补充设定值;其中所述其余位置包括所述压缩缓存最前面和/或最后面;或
若压缩缓存的容量不大于目标压缩字典,则将目标压缩字典前N比特或后N比特或中间N比特存储到压缩缓存,N为解压缓存的容量。
可选的,所述缓存模块500还用于:
按照当前使用的压缩字典优先级,将优先级最高的压缩字典作为目标压缩字典。
可选的,所述缓存模块500还用于:
将所述网络侧设备配置的发送使用的压缩字典作为目标压缩字典。
可选的,所述缓存模块500还用于:
若没有所述网络侧设备配置的压缩字典,则按照当前使用的压缩字典优先级,将优先 级最高的压缩字典作为目标压缩字典或将不高于网络侧设备配置的压缩字典的优先级的压缩字典作为目标压缩字典。
可选的,所述缓存模块500还用于:
若没有所述网络侧设备配置的压缩字典,则将预设填充信息存储到压缩缓存中。
可选的,所述压缩模块501还用于:
将所述目标压缩字典对应的压缩字典标识置于所述UDC压缩数据包的头部。
可选的,所述发送模块502还用于:
将字典支持能力信息发送给所述网络侧设备。
可选的,所述字典支持能力信息包括下列中的部分或全部:
是否支持标准压缩字典;
是否支持运营商自定义压缩字典;
支持运营商自定义的压缩字典的详细信息
可选的,所述UDC压缩数据包是初始传输的第一个UDC压缩数据包或进行压缩缓存重置后的第一个UDC压缩数据包。
可选的,所述第一个UDC压缩数据包是进行压缩缓存重置后的第一个UDC压缩数据包;
所述发送模块502还用于:
接收到所述网络侧设备通知的缓存复位指示;在所述UDC压缩数据包的头部携带复位指示和/或所述目标压缩字典对应的压缩字典标识。
本申请实施例提供一种可读存储介质,包括程序代码,当所述程序代码在计算设备上运行时,所述程序代码用于使所述计算设备执行上述系统中网络侧设备的动作。
本申请实施例还提供一种可读存储介质,包括程序代码,当所述程序代码在计算设备上运行时,所述程序代码用于使所述计算设备执行上述系统中终端的动作。
基于同一发明构思,本申请实施例中还提供了一种网络侧设备进行数据接收的方法,由于该方法对应的设备是本申请实施例进行数据传输的系统中的网络侧设备,并且该方法解决问题的原理与该设备相似,因此该方法的实施可以参见系统的实施,重复之处不再赘述。
如图6所示,本申请实施例网络侧设备进行数据接收的方法包括:
步骤600、网络侧设备将目标压缩字典存储到解压缓存中;
步骤601、所述网络侧设备通过解压缓存对收到的UDC压缩数据包进行解压操作。
可选的,所述网络侧设备将目标压缩字典存储到解压缓存中,包括:
若解压缓存的容量大于目标压缩字典,则所述网络侧设备将目标压缩字典存储到解压缓存中,其余位置补充设定值;其中所述其余位置包括所述解压缓存最前面和/或最后面;或
若解压缓存的容量不大于目标压缩字典,则所述网络侧设备将目标压缩字典前N比特或后N比特或中间N比特存储到解压缓存,N为解压缓存的容量。
可选的,所述网络侧设备将目标压缩字典存储到解压缓存中之前,还包括:
所述网络侧设备按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典;
所述网络侧设备通过解压缓存对收到的UDC压缩数据包进行解压操作之前,还包括:
所述网络侧设备根据收到的UDC压缩数据包进行缓存校验,且确定缓存校验成功;
该方法还包括:
若缓存校验失败,则所述网络侧设备返回按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典的步骤,直到缓存校验成功或没有未使用的压缩字典。
可选的,所述网络侧设备将目标压缩字典存储到解压缓存中之前,还包括:
若所述网络侧设备接收到的UDC压缩数据包的头部包括压缩字典标识,则所述网络侧设备将所述压缩字典标识对应的压缩字典作为目标压缩字典。
可选的,所述网络侧设备将目标压缩字典存储到解压缓存中之前,还包括:
所述网络侧设备为所述终端配置发送使用的压缩字典;
所述网络侧设备将配置给终端的压缩字典作为目标压缩字典。
可选的,所述网络侧设备通过解压缓存对收到的UDC压缩数据包进行解压操作之前,还包括:
所述网络侧设备根据收到的UDC压缩数据包进行缓存校验,且确定缓存校验成功;
该方法还包括:
若缓存校验失败,则所述网络侧设备按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典,直到缓存校验成功或没有未使用的压缩字典。
可选的,该方法还包括:
在缓存校验失败后,若没有未使用的压缩字典,则所述网络侧设备将预设填充信息存储到解压缓存中,并通过解压缓存对收到的UDC压缩数据包进行解压操作。
可选的,所述网络侧设备为所述终端配置发送使用的压缩字典,包括:
所述网络侧设备根据所述终端的字典支持能力信息和/或业务信息,为所述终端配置发 送使用的压缩字典。
可选的,所述UDC压缩数据包是初始传输的第一个UDC压缩数据包或进行压缩缓存重置后的第一个UDC压缩数据包。
可选的,所述第一个UDC压缩数据包是进行压缩缓存重置后的第一个UDC压缩数据包;
所述网络侧设备将目标压缩字典存储到解压缓存中之前,还包括:
所述网络侧设备在确定压缩缓存和解压缓存不同步后,通知所述终端进行缓存复位。
可选的,所述网络侧设备通知所述终端进行缓存复位之前,还包括:
所述网络侧设备在所述通知中携带用于通知终端配置发送使用的压缩字典或预设填充信息的指示信息。
可选的,所述压缩字典包括标准压缩字典和/或运营商自定义的压缩字典。
可选的,所述压缩字典包括运营商自定义的压缩字典;
该方法还包括:
所述网络侧设备通过多播、广播和单播中的部分或全部方式,为终端配置所述运营商自定义的压缩字典。
基于同一发明构思,本申请实施例中还提供了一种终端进行数据发送的方法,由于该方法对应的设备是本申请实施例进行数据传输的系统中的终端,并且该方法解决问题的原理与该设备相似,因此该方法的实施可以参见系统的实施,重复之处不再赘述。
如图7所示,本申请实施例终端进行数据发送的方法包括:
步骤700、终端将目标压缩字典存储到压缩缓存中;
步骤701、所述终端通过压缩缓存对需要发送的数据包进行压缩得到UDC压缩数据包;
步骤702、所述终端发送所述UDC压缩数据包。
可选的,所述终端将目标压缩字典存储到压缩缓存中,包括:
若压缩缓存的容量大于目标压缩字典,则所述终端将目标压缩字典存储到压缩缓存中,其余位置补充设定值;其中所述其余位置包括所述压缩缓存最前面和/或最后面;或
若压缩缓存的容量不大于目标压缩字典,则所述终端将目标压缩字典前N比特或后N比特或中间N比特存储到压缩缓存,N为解压缓存的容量。
可选的,所述终端将目标压缩字典存储到压缩缓存中之前,还包括:
所述终端按照当前使用的压缩字典优先级,将优先级最高的压缩字典作为目标压缩字典。
可选的,所述终端将目标压缩字典存储到压缩缓存中之前,还包括:
所述终端将所述网络侧设备配置的发送使用的压缩字典作为目标压缩字典。
可选的,所述终端将目标压缩字典存储到压缩缓存中之前,还包括:
若所述终端没有所述网络侧设备配置的压缩字典,则按照当前使用的压缩字典优先级,将优先级最高的压缩字典作为目标压缩字典或将不高于网络侧设备配置的压缩字典的优先级的压缩字典作为目标压缩字典。
可选的,该方法还包括:
若所述终端没有所述网络侧设备配置的压缩字典,则将预设填充信息存储到压缩缓存中。
可选的,所述终端将目标压缩字典存储到压缩缓存中之后,发送所述UDC压缩数据包之前,还包括:
所述终端将所述目标压缩字典对应的压缩字典标识置于所述UDC压缩数据包的头部。
可选的,所述终端将目标压缩字典存储到压缩缓存中之前,还包括:
所述终端将字典支持能力信息发送给所述网络侧设备。
可选的,所述字典支持能力信息包括下列中的部分或全部:
是否支持标准压缩字典;
是否支持运营商自定义压缩字典;
支持运营商自定义的压缩字典的详细信息
可选的,所述UDC压缩数据包是初始传输的第一个UDC压缩数据包或进行压缩缓存重置后的第一个UDC压缩数据包。
可选的,所述第一个UDC压缩数据包是进行压缩缓存重置后的第一个UDC压缩数据包;
所述终端将目标压缩字典存储到压缩缓存中之前,还包括:
所述终端接收到所述网络侧设备通知的缓存复位指示;
所述终端发送所述UDC压缩数据包之前,还包括:
所述终端在所述UDC压缩数据包的头部携带复位指示和/或所述目标压缩字典对应的压缩字典标识。
以上参照示出根据本申请实施例的方法、装置(系统)和/或计算机程序产品的框图和/或流程图描述本申请。应理解,可以通过计算机程序指令来实现框图和/或流程图示图的一个块以及框图和/或流程图示图的块的组合。可以将这些计算机程序指令提供给通用计算机、专用计算机的处理器和/或其它可编程数据处理装置,以产生机器,使得经由计算机处 理器和/或其它可编程数据处理装置执行的指令创建用于实现框图和/或流程图块中所指定的功能/动作的方法。
相应地,还可以用硬件和/或软件(包括固件、驻留软件、微码等)来实施本申请。更进一步地,本申请可以采取计算机可使用或计算机可读存储介质上的计算机程序产品的形式,其具有在介质中实现的计算机可使用或计算机可读程序代码,以由指令执行系统来使用或结合指令执行系统而使用。在本申请上下文中,计算机可使用或计算机可读介质可以是任意介质,其可以包含、存储、通信、传输、或传送程序,以由指令执行系统、装置或设备使用,或结合指令执行系统、装置或设备使用。
显然,本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样,倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。

Claims (51)

  1. 一种进行数据传输的方法,其特征在于,该方法包括:
    网络侧设备将目标压缩字典存储到解压缓存中;
    所述网络侧设备通过解压缓存对收到的上行数据压缩UDC压缩数据包进行解压操作。
  2. 如权利要求1所述的方法,其特征在于,所述网络侧设备将目标压缩字典存储到解压缓存中,包括:
    若解压缓存的容量大于目标压缩字典,则所述网络侧设备将目标压缩字典存储到解压缓存中,其余位置补充设定值;其中所述其余位置包括所述解压缓存最前面和/或最后面;或
    若解压缓存的容量不大于目标压缩字典,则所述网络侧设备将目标压缩字典前N比特或后N比特或中间N比特存储到解压缓存,N为解压缓存的容量。
  3. 如权利要求1所述的方法,其特征在于,所述网络侧设备将目标压缩字典存储到解压缓存中之前,还包括:
    所述网络侧设备按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典;
    所述网络侧设备通过解压缓存对收到的UDC压缩数据包进行解压操作之前,还包括:
    所述网络侧设备根据收到的UDC压缩数据包进行缓存校验,且确定缓存校验成功;
    该方法还包括:
    若缓存校验失败,则所述网络侧设备返回按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典的步骤,直到缓存校验成功或没有未使用的压缩字典。
  4. 如权利要求1所述的方法,其特征在于,所述网络侧设备将目标压缩字典存储到解压缓存中之前,还包括:
    若所述网络侧设备接收到的UDC压缩数据包的头部包括压缩字典标识,则所述网络侧设备将所述压缩字典标识对应的压缩字典作为目标压缩字典。
  5. 如权利要求1所述的方法,其特征在于,所述网络侧设备将目标压缩字典存储到解压缓存中之前,还包括:
    所述网络侧设备为所述终端配置发送使用的压缩字典;
    所述网络侧设备将配置给终端的压缩字典作为目标压缩字典。
  6. 如权利要求5所述的方法,其特征在于,所述网络侧设备通过解压缓存对收到的UDC压缩数据包进行解压操作之前,还包括:
    所述网络侧设备根据收到的UDC压缩数据包进行缓存校验,且确定缓存校验成功;
    该方法还包括:
    若缓存校验失败,则所述网络侧设备按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典,直到缓存校验成功或没有未使用的压缩字典。
  7. 如权利要求3或6所述的方法,其特征在于,该方法还包括:
    在缓存校验失败后,若没有未使用的压缩字典,则所述网络侧设备将预设填充信息存储到解压缓存中,并通过解压缓存对收到的UDC压缩数据包进行解压操作。
  8. 如权利要求5所述的方法,其特征在于,所述网络侧设备为所述终端配置发送使用的压缩字典,包括:
    所述网络侧设备根据所述终端的字典支持能力信息和/或业务信息,为所述终端配置发送使用的压缩字典。
  9. 如权利要求1所述的方法,其特征在于,所述UDC压缩数据包是初始传输的第一个UDC压缩数据包或进行压缩缓存重置后的第一个UDC压缩数据包。
  10. 如权利要求9所述的方法,其特征在于,所述第一个UDC压缩数据包是进行压缩缓存重置后的第一个UDC压缩数据包;
    所述网络侧设备将目标压缩字典存储到解压缓存中之前,还包括:
    所述网络侧设备在确定压缩缓存和解压缓存不同步后,通知所述终端进行缓存复位。
  11. 如权利要求10所述的方法,其特征在于,所述网络侧设备通知所述终端进行缓存复位之前,还包括:
    所述网络侧设备在所述通知中携带用于通知终端配置发送使用的压缩字典或预设填充信息的指示信息。
  12. 如权利要求1~6、8~10任一所述的方法,其特征在于,所述压缩字典包括标准压缩字典和/或运营商自定义的压缩字典。
  13. 如权利要求12所述的方法,其特征在于,所述压缩字典包括运营商自定义的压缩字典;
    该方法还包括:
    所述网络侧设备通过多播、广播和单播中的部分或全部方式,为终端配置所述运营商自定义的压缩字典。
  14. 一种进行数据传输的方法,其特征在于,该方法包括:
    终端将目标压缩字典存储到压缩缓存中;
    所述终端通过压缩缓存对需要发送的数据包进行压缩得到UDC压缩数据包;
    所述终端发送所述UDC压缩数据包。
  15. 如权利要求14所述的方法,其特征在于,所述终端将目标压缩字典存储到压缩缓存中,包括:
    若压缩缓存的容量大于目标压缩字典,则所述终端将目标压缩字典存储到压缩缓存中,其余位置补充设定值;其中所述其余位置包括所述压缩缓存最前面和/或最后面;或
    若压缩缓存的容量不大于目标压缩字典,则所述终端将目标压缩字典前N比特或后N比特或中间N比特存储到压缩缓存,N为解压缓存的容量。
  16. 如权利要求14所述的方法,其特征在于,所述终端将目标压缩字典存储到压缩缓存中之前,还包括:
    所述终端按照当前使用的压缩字典优先级,将优先级最高的压缩字典作为目标压缩字典。
  17. 如权利要求14所述的方法,其特征在于,所述终端将目标压缩字典存储到压缩缓存中之前,还包括:
    所述终端将所述网络侧设备配置的发送使用的压缩字典作为目标压缩字典。
  18. 如权利要求17所述的方法,其特征在于,所述终端将目标压缩字典存储到压缩缓存中之前,还包括:
    若所述终端没有所述网络侧设备配置的压缩字典,则按照当前使用的压缩字典优先级,将优先级最高的压缩字典作为目标压缩字典或将不高于网络侧设备配置的压缩字典的优先级的压缩字典作为目标压缩字典。
  19. 如权利要求16或17所述的方法,其特征在于,该方法还包括:
    若所述终端没有所述网络侧设备配置的压缩字典,则将预设填充信息存储到压缩缓存中。
  20. 如权利要求14所述的方法,其特征在于,所述终端将目标压缩字典存储到压缩缓存中之后,发送所述UDC压缩数据包之前,还包括:
    所述终端将所述目标压缩字典对应的压缩字典标识置于所述UDC压缩数据包的头部。
  21. 如权利要求14所述的方法,其特征在于,所述终端将目标压缩字典存储到压缩缓存中之前,还包括:
    所述终端将字典支持能力信息发送给所述网络侧设备。
  22. 如权利要求21所述的方法,其特征在于,所述字典支持能力信息包括下列中的部分或全部:
    是否支持标准压缩字典;
    是否支持运营商自定义压缩字典;
    支持运营商自定义的压缩字典的详细信息。
  23. 如权利要求14~22任一所述的方法,其特征在于,所述UDC压缩数据包是初始传输的第一个UDC压缩数据包或进行压缩缓存重置后的第一个UDC压缩数据包。
  24. 如权利要求23所述的方法,其特征在于,所述第一个UDC压缩数据包是进行压缩缓存重置后的第一个UDC压缩数据包;
    所述终端将目标压缩字典存储到压缩缓存中之前,还包括:
    所述终端接收到所述网络侧设备通知的缓存复位指示;
    所述终端发送所述UDC压缩数据包之前,还包括:
    所述终端在所述UDC压缩数据包的头部携带复位指示和/或所述目标压缩字典对应的压缩字典标识。
  25. 一种进行数据传输的网络侧设备,其特征在于,该网络侧设备包括:处理器、存储器和收发机;
    处理器,用于读取存储器中的程序并执行下列过程:
    将目标压缩字典存储到解压缓存中;通过解压缓存对收到的UDC压缩数据包进行解压操作。
  26. 如权利要求25所述的网络侧设备,其特征在于,所述处理器具体用于:
    若解压缓存的容量大于目标压缩字典,则将目标压缩字典存储到解压缓存中,其余位置补充设定值;其中所述其余位置包括所述解压缓存最前面和/或最后面;或
    若解压缓存的容量不大于目标压缩字典,则将目标压缩字典前N比特或后N比特或中间N比特存储到解压缓存,N为解压缓存的容量。
  27. 如权利要求25所述的网络侧设备,其特征在于,所述处理器还用于:
    按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典;
    通过解压缓存对收到的UDC压缩数据包进行解压操作之前,根据收到的UDC压缩数据包进行缓存校验,且确定缓存校验成功;
    若缓存校验失败,则返回按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典的步骤,直到缓存校验成功或没有未使用的压缩字典。
  28. 如权利要求25所述的网络侧设备,其特征在于,所述处理器还用于:
    若接收到的UDC压缩数据包的头部包括压缩字典标识,则将所述压缩字典标识对应的压缩字典作为目标压缩字典。
  29. 如权利要求25所述的网络侧设备,其特征在于,所述处理器还用于:
    为所述终端配置发送使用的压缩字典;将配置给终端的压缩字典作为目标压缩字典。
  30. 如权利要求29所述的网络侧设备,其特征在于,所述处理器还用于:
    通过解压缓存对收到的UDC压缩数据包进行解压操作之前,根据收到的UDC压缩数据包进行缓存校验,且确定缓存校验成功;
    若缓存校验失败,则按照压缩字典优先级选择一个未使用的且优先级最高的压缩字典作为目标压缩字典,直到缓存校验成功或没有未使用的压缩字典。
  31. 如权利要求27或30所述的网络侧设备,其特征在于,所述处理器还用于:
    在缓存校验失败后,若没有未使用的压缩字典,则将预设填充信息存储到解压缓存中,并通过解压缓存对收到的UDC压缩数据包进行解压操作。
  32. 如权利要求29所述的网络侧设备,其特征在于,所述处理器具体用于:
    根据所述终端的字典支持能力信息和/或业务信息,为所述终端配置发送使用的压缩字典。
  33. 如权利要求25所述的网络侧设备,其特征在于,所述UDC压缩数据包是初始传输的第一个UDC压缩数据包或进行压缩缓存重置后的第一个UDC压缩数据包。
  34. 如权利要求33所述的网络侧设备,其特征在于,所述第一个UDC压缩数据包是进行压缩缓存重置后的第一个UDC压缩数据包;
    所述处理器还用于:
    在确定压缩缓存和解压缓存不同步后,通知所述终端进行缓存复位。
  35. 如权利要求34所述的网络侧设备,其特征在于,所述处理器还用于:
    在所述通知中携带用于通知终端配置发送使用的压缩字典或预设填充信息的指示信息。
  36. 如权利要求25~30、32~34任一所述的网络侧设备,其特征在于,所述压缩字典包括标准压缩字典和/或运营商自定义的压缩字典。
  37. 如权利要求36所述的网络侧设备,其特征在于,所述压缩字典包括运营商自定义的压缩字典;
    所述处理器还用于:
    通过多播、广播和单播中的部分或全部方式,为终端配置所述运营商自定义的压缩字典。
  38. 一种进行数据传输的终端,其特征在于,该终端包括:处理器、存储器和收发机;
    处理器,用于读取存储器中的程序并执行下列过程:
    将目标压缩字典存储到压缩缓存中;通过压缩缓存对需要发送的数据包进行压缩得到 UDC压缩数据包;发送所述UDC压缩数据包。
  39. 如权利要求38所述的终端,其特征在于,所述处理器具体用于:
    若压缩缓存的容量大于目标压缩字典,则将目标压缩字典存储到压缩缓存中,其余位置补充设定值;其中所述其余位置包括所述压缩缓存最前面和/或最后面;或
    若压缩缓存的容量不大于目标压缩字典,则将目标压缩字典前N比特或后N比特或中间N比特存储到压缩缓存,N为解压缓存的容量。
  40. 如权利要求38所述的终端,其特征在于,所述处理器还用于:
    按照当前使用的压缩字典优先级,将优先级最高的压缩字典作为目标压缩字典。
  41. 如权利要求38所述的终端,其特征在于,所述处理器还用于:
    将所述网络侧设备配置的发送使用的压缩字典作为目标压缩字典。
  42. 如权利要求41所述的终端,其特征在于,所述处理器还用于:
    若没有所述网络侧设备配置的压缩字典,则按照当前使用的压缩字典优先级,将优先级最高的压缩字典作为目标压缩字典或将不高于网络侧设备配置的压缩字典的优先级的压缩字典作为目标压缩字典。
  43. 如权利要求40或41所述的终端,其特征在于,所述处理器还用于:
    若没有所述网络侧设备配置的压缩字典,则将预设填充信息存储到压缩缓存中。
  44. 如权利要求38所述的终端,其特征在于,所述处理器还用于:
    将目标压缩字典存储到压缩缓存中之后,发送所述UDC压缩数据包之前,将所述目标压缩字典对应的压缩字典标识置于所述UDC压缩数据包的头部。
  45. 如权利要求38所述的终端,其特征在于,所述处理器还用于:
    将目标压缩字典存储到压缩缓存中之前,将字典支持能力信息发送给所述网络侧设备。
  46. 如权利要求45所述的终端,其特征在于,所述字典支持能力信息包括下列中的部分或全部:
    是否支持标准压缩字典;
    是否支持运营商自定义压缩字典;
    支持运营商自定义的压缩字典的详细信息。
  47. 如权利要求38~42、44~46任一所述的终端,其特征在于,所述UDC压缩数据包是初始传输的第一个UDC压缩数据包或进行压缩缓存重置后的第一个UDC压缩数据包。
  48. 如权利要求47所述的终端,其特征在于,所述第一个UDC压缩数据包是进行压缩缓存重置后的第一个UDC压缩数据包;
    所述处理器还用于:
    接收到所述网络侧设备通知的缓存复位指示;在所述UDC压缩数据包的头部携带复位指示和/或所述目标压缩字典对应的压缩字典标识。
  49. 一种进行数据传输的网络侧设备,其特征在于,该网络侧设备包括:
    处理模块,用于将目标压缩字典存储到解压缓存中;
    解压模块,用于通过解压缓存对收到的UDC压缩数据包进行解压操作。
  50. 一种进行数据传输的终端,其特征在于,该终端包括:
    缓存模块,用于将目标压缩字典存储到压缩缓存中;
    压缩模块,用于通过压缩缓存对需要发送的数据包进行压缩得到UDC压缩数据包;
    发送模块,用于发送所述UDC压缩数据包。
  51. 一种缓存同步异常设备可读存储介质,其特征在于,包括程序代码,当所述程序代码在计算设备上运行时,所述程序代码用于使所述计算设备执行权利要求1~13任一所述方法的步骤或权利要求14~24任一所述方法的步骤。
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