WO2021000763A1 - 数据传输方法及装置 - Google Patents

数据传输方法及装置 Download PDF

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Publication number
WO2021000763A1
WO2021000763A1 PCT/CN2020/097771 CN2020097771W WO2021000763A1 WO 2021000763 A1 WO2021000763 A1 WO 2021000763A1 CN 2020097771 W CN2020097771 W CN 2020097771W WO 2021000763 A1 WO2021000763 A1 WO 2021000763A1
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Prior art keywords
dictionary
data
information
mapping relationship
dictionary information
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PCT/CN2020/097771
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English (en)
French (fr)
Inventor
苗金华
全海洋
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大唐移动通信设备有限公司
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Publication of WO2021000763A1 publication Critical patent/WO2021000763A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0033—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/04—Protocols for data compression, e.g. ROHC

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to data transmission methods and devices.
  • UDC uses the existing open source compression algorithm to compress the uplink (UL) data packet before transmission. Unlike Robust Header Compression (ROHC), ROHC only compresses the header of the data packet, while UDC can compress the entire PDCP SDU, so the compression efficiency is higher, especially for large packets.
  • ROHC Robust Header Compression
  • UDC is configured through RRC.
  • the terminal User Equipment, UE
  • the terminal pre-stores a dictionary, and the network side keeps the dictionary synchronized with the UE.
  • the UE performs UDC compression according to the dictionary, and sends the compressed data packet to the network side.
  • the network side decompresses according to the dictionary.
  • RLC AM mode the sender composes RLC service data unit (SDU) into RLC packet data unit (PDU) through segmentation/concatenation, etc., and marks the RLC secondary base station (Secondary Node, SN). )number.
  • SDU RLC service data unit
  • PDU packet data unit
  • SN RLC secondary base station
  • the RLC receiving end learns which RLC PDUs have not been received according to the SN number, and sends a status report to the sending end. After receiving the status report, the sender completes the retransmission of the RLC PDU without receiving it according to the status report.
  • RLC and AM mode can ensure the reliability of data packet transmission, that is, very low packet loss rate.
  • RLC Unacknowledged Mode In RLC UM mode, the sender composes RLC SDUs into RLC PDUs through segmentation/cascading, etc., and marks the RLC SN number. These are the same as RLC AM. However, in the RLC UM mode, the receiving end will not send a status report, and the sending end cannot know which data packets are lost, so it will not retransmit the PDUs that have lost RLC. This cannot guarantee a lower packet loss rate for data transmission.
  • UM Unacknowledged Mode
  • RLC UM mode since there is no retransmission involved, in RLC UM mode, the data transmission rate will be greater than RLC AM mode. Therefore, for some data that is not sensitive to the packet loss rate but sensitive to the transmission delay, the RLC UM mode will be selected.
  • UDC is configured for RLC AM entities. Since the UDC dictionary is updated according to the transmission status, if the receiving end cannot receive some data packets, the update degree of the dictionary will be inconsistent with the sending end, and the subsequent data packet decompression will fail.
  • the embodiments of the present disclosure provide a data transmission method and device for performing data compression transmission processing based on dictionary information, which solves the problem of low compression efficiency due to packet loss in the RLC UM mode.
  • a data transmission method provided by an embodiment of the present disclosure is applied to a compression end, and the method includes:
  • the data is compressed according to the dictionary information containing the mapping relationship between the data information and the dictionary, and compressed data is generated;
  • the embodiment of the present disclosure compresses the data according to the dictionary information containing the mapping relationship between the data information and the dictionary to generate compressed data; sends the compressed data to the receiving end, thereby implementing data compression transmission processing according to the dictionary information.
  • the compression efficiency is low due to packet loss.
  • the dictionary information includes at least one of the following contents:
  • the bearer information includes a bearer identifier.
  • the method further includes sending the dictionary information to the decompression end through a message in one of the following forms:
  • Radio resource control RRC signaling or;
  • Packet data unit PDU through the packet data convergence protocol PDCP, or;
  • the dictionary information is sent by a base station
  • the dictionary information is pre-configured by the core network
  • the dictionary information is pre-stored.
  • a data transmission method provided by an embodiment of the present disclosure is applied to a decompression end, and the method includes:
  • the dictionary information includes at least one of the following contents:
  • the bearer information includes a bearer identifier.
  • the method further includes receiving the dictionary information in one of the following forms:
  • Radio resource control RRC signaling or;
  • Packet data unit PDU through the packet data convergence protocol PDCP, or;
  • the dictionary information is sent by a base station
  • the dictionary information is pre-configured by the core network
  • the dictionary information is pre-stored.
  • An embodiment of the present disclosure provides a data transmission device, which is applied to a compression end, and the device includes:
  • Memory used to store program instructions
  • the processor is used to call the program instructions stored in the memory and execute according to the obtained program:
  • the data is compressed according to the dictionary information containing the mapping relationship between the data information and the dictionary, and compressed data is generated;
  • the dictionary information includes at least one of the following contents:
  • the bearer information includes a bearer identifier.
  • the processor is further configured to send the dictionary information to the decompression end through a message in one of the following forms:
  • Radio resource control RRC signaling or;
  • Packet data unit PDU through the packet data convergence protocol PDCP, or;
  • the dictionary information is sent by a base station
  • the dictionary information is pre-configured by the core network
  • the dictionary information is pre-stored.
  • An embodiment of the present disclosure provides a data transmission device, which is applied to a decompression end, and the device includes:
  • Memory used to store program instructions
  • the processor is used to call the program instructions stored in the memory and execute according to the obtained program:
  • the dictionary information includes at least one of the following contents:
  • the bearer information includes a bearer identifier.
  • the processor is further configured to: receive the dictionary information in one of the following forms:
  • Radio resource control RRC signaling or;
  • Packet data unit PDU through the packet data convergence protocol PDCP, or;
  • the dictionary information is sent by a base station
  • the dictionary information is pre-configured by the core network
  • the dictionary information is pre-stored.
  • An embodiment of the present disclosure provides a data transmission device, which is applied to a compression end, and the device includes:
  • the compression unit is used to compress the data according to the dictionary information containing the mapping relationship between the data information and the dictionary, and generate compressed data;
  • the sending unit is configured to send the compressed data to the receiving end.
  • the dictionary information includes at least one of the following contents:
  • the bearer information includes a bearer identifier.
  • the sending unit is further configured to send the dictionary information to the decompression end through a message in one of the following forms:
  • Radio resource control RRC signaling or;
  • Packet data unit PDU through the packet data convergence protocol PDCP, or;
  • the dictionary information is sent by a base station
  • the dictionary information is pre-configured by the core network
  • the dictionary information is pre-stored.
  • An embodiment of the present disclosure provides a data transmission device, which is applied to a decompression end, and the device includes:
  • a receiving unit configured to receive compressed data obtained by compression according to dictionary information including a mapping relationship between data information and a dictionary
  • the decompression unit is configured to use the dictionary information to decompress the compressed data.
  • the dictionary information includes at least one of the following contents:
  • the bearer information includes a bearer identifier.
  • the receiving unit is further configured to: receive the dictionary information through a message in one of the following forms:
  • Radio resource control RRC signaling or;
  • Packet data unit PDU through the packet data convergence protocol PDCP, or;
  • the dictionary information is sent by a base station
  • the dictionary information is pre-configured by the core network
  • the dictionary information is pre-stored.
  • Another embodiment of the present disclosure provides a computing device, which includes a memory and a processor, wherein the memory is used to store program instructions, and the processor is used to call the program instructions stored in the memory, according to the obtained program Perform any of the above methods.
  • Another embodiment of the present disclosure provides a computer storage medium that stores computer-executable instructions, and the computer-executable instructions are used to make the computer execute any of the above methods.
  • FIG. 1 is a schematic flowchart of a data transmission method at a sending end according to an embodiment of the disclosure
  • FIG. 2 is a schematic flowchart of a data transmission method at a receiving end according to an embodiment of the disclosure
  • FIG. 3 is a schematic structural diagram of a data transmission device at the sending end according to an embodiment of the disclosure
  • FIG. 4 is a schematic structural diagram of a data transmission device at the receiving end according to an embodiment of the disclosure.
  • FIG. 5 is a schematic structural diagram of another data transmission device at the sending end according to an embodiment of the disclosure.
  • FIG. 6 is a schematic structural diagram of another data transmission device at the receiving end according to an embodiment of the disclosure.
  • the embodiments of the present disclosure provide a data transmission method and device for performing data compression transmission processing based on dictionary information, which solves the problem of low compression efficiency due to packet loss in the RLC UM mode.
  • the method and the device are based on the same application conceived. Since the principles of the method and the device to solve the problem are similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.
  • applicable systems can be global system of mobile communication (GSM) system, code division multiple access (CDMA) system, and wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet Wireless service (general packet radio service, GPRS) system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), general Mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G system, 5G NR system, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband Code Division Multiple Access
  • general packet Wireless service general packet radio service
  • GPRS general packet Radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS general Mobile system
  • WiMAX worldwide interoperability for microwave access
  • the terminal device involved in the embodiments of the present disclosure may be a device that provides voice and/or data connectivity to users, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem.
  • the name of the terminal device may be different.
  • the terminal device may be called a user equipment (UE).
  • the wireless terminal device can communicate with one or more core networks via the RAN.
  • the wireless terminal device can be a mobile terminal device, such as a mobile phone (or “cellular” phone) and a computer with a mobile terminal device, for example, a portable , Pocket, handheld, computer built-in or vehicle-mounted mobile devices that exchange language and/or data with the wireless access network.
  • Wireless terminal equipment can also be referred to as system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point (access point) , Remote terminal equipment (remote terminal), access terminal equipment (access terminal), user terminal equipment (user terminal), user agent (user agent), user device (user device), which are not limited in the embodiments of the present disclosure.
  • the network device involved in the embodiments of the present disclosure may be a base station, and the base station may include multiple cells.
  • a base station may also be called an access point, or may refer to a device in an access network that communicates with a wireless terminal device through one or more sectors on an air interface, or other names.
  • the network device can be used to convert the received air frame and the Internet protocol (IP) packet to each other, as a router between the wireless terminal device and the rest of the access network, where the rest of the access network can include the Internet Protocol (IP) communication network.
  • IP Internet Protocol
  • the network equipment can also coordinate the attribute management of the air interface.
  • the network equipment involved in the embodiments of the present disclosure may be a network equipment (base transmitter station, BTS) in the global system for mobile communications (GSM) or code division multiple access (CDMA). ), it can also be a network device (NodeB) in wide-band code division multiple access (WCDMA), or an evolved network device in a long-term evolution (LTE) system (evolutional node B, eNB or e-NodeB), 5G base station in 5G network architecture (next generation system), but also home evolved node B (HeNB), relay node (relay node), home base station ( Femto), pico base station (pico), etc. are not limited in the embodiment of the present disclosure.
  • BTS network equipment
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • NodeB wide-band code division multiple access
  • LTE long-term evolution
  • 5G base station in 5G network architecture
  • HeNB home evolved node B
  • HeNB home evolved node B
  • Femto home base station
  • the dynamic dictionary cannot be used in the RLC UM mode.
  • the meaning of the dynamic dictionary is that the compression end (ie, the sending end) and the decompression end (ie, the receiving end) can update the dictionary information according to the compression state.
  • the technical solutions provided in the embodiments of the present disclosure can be used.
  • the technical solutions provided by the embodiments of the present disclosure are applicable to the terminal side and also applicable to the network side.
  • the technical solutions provided in the embodiments of the present disclosure include:
  • the UE or the network side performs data compression/decompression according to the dictionary information
  • the dictionary information is sent by the base station;
  • the dictionary information is pre-configured by the core network
  • the dictionary information is pre-stored
  • the dictionary information is sent to the decompression end through one of the following forms of messages, or the dictionary information is received from the compression end through one of the following forms:
  • Radio Resource Control Radio Resource Control
  • PDCP controls the Packet Data Unit (PDU);
  • Packet data convergence protocol Packet Data Convergence Protocol, PDCP
  • the dictionary information may include a mapping relationship between DRB (Data RB, data bearer between the terminal and the base station) and the dictionary;
  • the dictionary information may include the mapping relationship between the data stream and the dictionary
  • the dictionary information may include a mapping relationship between a data packet (Service Data Unit (SDU)/PDU) and a dictionary;
  • SDU Service Data Unit
  • PDU Physical Data Unit
  • the dictionary information may include a mapping relationship between a radio link control (Radio Link Control, RLC) mode and a dictionary.
  • RLC Radio Link Control
  • Embodiment 1 The UE selects a dictionary according to dictionary information.
  • the dictionary information includes the mapping relationship between the bearer information and the dictionary, the mapping relationship between the data stream and the dictionary, the mapping relationship between the data packet length and the dictionary, and the relationship between the radio link control RLC mode and the dictionary. Mapping relationship, quality of service (Quality of Service, QoS) information.
  • QoS Quality of Service
  • Step 1 The UE stores multiple dictionaries in advance.
  • multiple dictionaries may be configured by the operator, such as being sent to the UE through broadcast messages/dedicated signaling.
  • the network side may send the dictionary corresponding to the bearer information to the UE according to the bearer information established by the UE; or, The network side may send the dictionary corresponding to the UE's capability to the UE according to the UE's capability.
  • the base station before the base station sends the dictionary to the UE, the UE sends dictionary request information to the base station, and the base station sends the dictionary to the UE based on the request of the UE.
  • the dictionary may also be pre-stored by the UE, for example, stored in a Subscriber Identification Module (SIM).
  • SIM Subscriber Identification Module
  • Step 2 The UE performs a data compression process according to the dictionary information.
  • the UE performs the data compression process.
  • the UE selects a dictionary to perform compression according to the dictionary information.
  • the dictionary information may be indication information sent by the network, such as network side indication information, or core network configuration information, or stored compression indication information, etc., used to indicate the mapping relationship between the dictionary and the data to be compressed.
  • the dictionary information may be the mapping relationship between the bearing attributes of the data to be compressed and the dictionary.
  • the network side configures the dictionary corresponding to DRB1 of the UE as dictionary 1
  • the network side configures the dictionary corresponding to DRB2 as dictionary 2.
  • the UE compresses the data on DRB1 it will select dictionary 1 to perform compression based on the dictionary information, and then send the compressed data to the network side.
  • the UE compresses the data on DRB2 it selects dictionary 2 to perform compression, and then sends the compressed data to the network side.
  • different bearers can perform compression according to different dictionaries, making the compression more efficient.
  • the mapping relationship between bearer and dictionary can be one-to-many, that is, one DRB can correspond to multiple dictionaries, and the UE can choose the length of the data packet; it can also be many-to-one, that is, multiple DRBs correspond to one dictionary; or One to one, there is no restriction here.
  • the dictionary information may be the mapping relationship between the data stream attributes of the data to be compressed and the dictionary.
  • the dictionary corresponding to data stream 1 there may be multiple corresponding data streams in the current PDCP entity (specifically, they are mapped according to the SDAP layer).
  • the network side configures the dictionary corresponding to data stream 1 as dictionary 1, and the dictionary corresponding to data stream 2 is dictionary 2.
  • the UE compresses the data on the data stream 1 it selects a dictionary to perform compression according to the instruction information, and sends the compressed data to the network side.
  • the UE compresses the data on the data stream 2 it selects the dictionary 2 to perform compression, and then sends the compressed data to the network side.
  • the bearer is refined to the data stream, and different data streams are compressed according to different dictionaries, which improves the compression efficiency.
  • mapping relationship between data streams and dictionaries can be one-to-many, that is, one data stream can correspond to multiple dictionaries, and the UE can further select which dictionary according to the length of the data packet; it can also be many-to-one, that is, multiple data streams. Corresponds to a dictionary; it can also be one-to-one, there is no restriction here.
  • the dictionary information may be the correspondence between the length of the data packet and the dictionary.
  • the network sends the mapping relationship between different data lengths corresponding to different dictionaries to the UE.
  • the byte length 0-x of the data packet corresponds to dictionary 1
  • the byte length x+1 ⁇ y of the data packet corresponds to dictionary 2
  • the byte length y+1 ⁇ z of the data packet corresponds to dictionary 3, and so on.
  • the lengths of the PDCP SDU data packets of the UE correspond to different length intervals, data compression is performed through the relationship between the PDCP SDU or the PDU and the dictionary.
  • the dictionary information may be the correspondence between the RLC mode configured on the network side and the dictionary.
  • the network side configures the UE to select the dictionary according to the RLC mode.
  • the UE will implement the compression mode of the dynamic dictionary, that is, the dictionary is updated according to the real-time compression.
  • the UE will perform the compression mode of the static dictionary, that is, the dictionary is pre-configured.
  • Step 3 The UE sends the dictionary information on which the compression dictionary is based to the network side to facilitate the network side to perform decompression.
  • This step is optional. If the network does not know the relationship between the compressed data and the dictionary, the network side can perform decompression based on the received data.
  • Embodiment 2 The network side selects a dictionary according to dictionary information, and performs compression.
  • Step 1 Pre-store multiple dictionaries on the network side.
  • multiple dictionaries may be configured by the operator, and may be configured according to the capabilities of the UE.
  • Step 2 The network side executes the data compression process according to the dictionary information.
  • the network side selects a dictionary to perform compression based on dictionary information.
  • the dictionary information may be core network configuration information, or stored compression indication information, etc., used to indicate the mapping relationship between the dictionary and the data to be compressed.
  • the dictionary information may be the mapping relationship between the bearing attribute of the data to be compressed and the dictionary.
  • the dictionary corresponding to DRB1 is dictionary 1
  • the dictionary corresponding to DRB2 is dictionary 2. Then, when the network side compresses the data of DRB1, it will select dictionary 1 to perform compression based on the dictionary information, and then send the compressed data to the UE. Similarly, when compressing data on DRB2, the network side selects dictionary 2 to perform compression, and then sends the compressed data to the UE. In this way, on the PDCP side, different bearers can perform compression according to different dictionaries, making the compression more efficient.
  • the mapping relationship between the bearer and the dictionary can be one-to-many, that is, a DRB can correspond to multiple dictionaries, and the UE can further select which dictionary is the data packet length; the mapping relationship between the bearer and the dictionary can also be many-to-one, that is Multiple DRBs correspond to a dictionary; it can also be one-to-one, and there is no restriction here.
  • the dictionary information may be the mapping relationship between the stream attributes of the data to be compressed and the dictionary.
  • the dictionary corresponding to data stream 1 is dictionary 1
  • the dictionary corresponding to data stream 2 is dictionary 2.
  • the network side compresses the data on data stream 1, according to the dictionary information, select the dictionary to perform compression, and then compress the compressed data Sent to UE.
  • the network side selects dictionary 2 to perform compression, and then sends the compressed data to the UE.
  • the bearer is refined to the data stream, and different data streams are compressed according to different dictionaries, which improves the compression efficiency but increases the complexity.
  • mapping relationship between data streams and dictionaries can be one-to-many, that is, one data stream can correspond to multiple dictionaries, and the UE can make further selections according to the length of the data packet; it can also be many-to-one, that is, multiple data streams Corresponds to a dictionary; it can also be one-to-one, there is no restriction here.
  • the dictionary information may be the correspondence between the length of the data packet and the dictionary.
  • the network side stores the mapping relationship between different data lengths corresponding to different dictionaries. For example, byte length 0-x corresponds to dictionary 1, byte length x+1 to y corresponds to dictionary 2, byte length y+1 to z corresponds to dictionary 3, and so on. Then when the length of the PDCP SDU/PDU on the network side respectively corresponds to different length intervals, data compression is performed by matching the relationship between the PDCP SDU or PDU and the dictionary.
  • the dictionary information can be based on the correspondence between the RLC mode and the dictionary configured on the network side.
  • the network side selects the dictionary according to the RLC mode.
  • the network side will implement the compression mode of the dynamic dictionary, that is, the dictionary is updated according to the real-time compression situation.
  • the RLC mode is the UM mode
  • the network side will execute the compression mode of the static dictionary, that is, the pre-configured dictionary.
  • Step 3 The network side sends the dictionary information on which the compression dictionary is based to the UE to facilitate the UE to perform decompression.
  • This step is optional, and the UE performs decompression according to the received data.
  • Embodiment 1 and Embodiment 2 are the case where the terminal and the network side respectively serve as the compression terminal.
  • Embodiment 3 The UE side performs a decompression process.
  • Step 1 UE side pre-stores multiple dictionaries.
  • the terminal can obtain the dictionary, such as pre-stored, and sent to the terminal from the network side.
  • Step 2 After the UE receives the compressed data, it performs data decompression.
  • the UE performs the decompression process according to the instruction information from the network side.
  • the indication information may include a dictionary, a mapping relationship between the dictionary and the data, one or more information in the dictionary index number, and so on.
  • This information can be sent to the UE through one or more pieces of signaling. It can be indicated to the UE through RRC signaling, PDCP control PDU, or PDCP header. I won’t go into details here.
  • mapping relationship between the dictionary and the compressed data is the same as the implementation, for example:
  • Embodiment 4 The network side executes the decompression process.
  • Step 1 Pre-store multiple dictionaries on the network side.
  • Step 2 After receiving the compressed data, the network side executes data decompression.
  • mapping relationship between the dictionary and the compressed data sent by the core network/UE is received, and the mapping relationship may also be stored by the network side. I won’t go into details here.
  • the specific mapping relationship can be:
  • mapping relationship between data stream and dictionary for example, data stream 1 corresponds to dictionary 1, and data stream 2 corresponds to dictionary 2.
  • the PDCP on the network side obtains the data stream information through SDAP. If the received data belongs to data stream 1, then it will perform data decompression according to dictionary 1, and if the received data belongs to data stream 2, then it will perform according to dictionary 2. Data decompression.
  • mapping relationship between data packet length and dictionary For example, byte length 0-x corresponds to dictionary 1, byte length x+1 to y corresponds to dictionary 2, byte length y+1 to z corresponds to dictionary 3, and so on. Then, when the length of the PDCP SDU/PDU received by the network side respectively corresponds to different byte length intervals, data decompression is performed by matching the relationship between the length of the PDCP SDU or PDU data packet and the dictionary.
  • a data transmission method provided by an embodiment of the present disclosure is applied to a compression end (i.e., a sending end), and the method includes:
  • S101 Compress data according to dictionary information including a mapping relationship between data information and a dictionary, and generate compressed data;
  • the embodiment of the present disclosure compresses the data according to the dictionary information containing the mapping relationship between the data information and the dictionary to generate compressed data; sends the compressed data to the receiving end, thereby implementing data compression transmission processing according to the dictionary information.
  • the compression efficiency is low due to packet loss.
  • the dictionary information includes at least one of the following contents:
  • the bearer information includes a bearer identifier.
  • the bearer information may also include other information.
  • the method further includes sending the dictionary information to the decompression end through a message in one of the following forms:
  • Radio resource control RRC signaling or;
  • Packet data unit PDU through the packet data convergence protocol PDCP, or;
  • the dictionary information is sent by the base station, or pre-configured by the core network, or pre-stored.
  • a data transmission method provided by an embodiment of the present disclosure is applied to the decompression end (that is, the receiving end), and the method includes:
  • S201 Receive compressed data obtained by compression according to dictionary information including a mapping relationship between data information and a dictionary;
  • the dictionary information includes at least one of the following contents:
  • the bearer information includes a bearer identifier.
  • the method further includes receiving the dictionary information in one of the following forms:
  • Radio resource control RRC signaling or;
  • Packet data unit PDU through the packet data convergence protocol PDCP, or;
  • the dictionary information is sent by the base station, or pre-configured by the core network, or pre-stored.
  • a data transmission device provided by an embodiment of the present disclosure is applied to a compression end, and the device includes:
  • the memory 520 is used to store program instructions
  • the processor 500 is configured to call the program instructions stored in the memory, and execute according to the obtained program:
  • the data is compressed according to the dictionary information containing the mapping relationship between the data information and the dictionary, and compressed data is generated;
  • the dictionary information includes at least one of the following contents:
  • the bearer information includes a bearer identifier.
  • the processor 500 is further configured to send the dictionary information to the decompression end through a message in one of the following forms:
  • Radio resource control RRC signaling or;
  • Packet data unit PDU through the packet data convergence protocol PDCP, or;
  • the dictionary information is sent by the base station, or pre-configured by the core network, or pre-stored.
  • the transceiver 510 is configured to receive and send data under the control of the processor 500.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 500 and various circuits of the memory represented by the memory 520 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the transceiver 510 may be a plurality of elements, that is, including a transmitter and a transceiver, and provide a unit for communicating with various other devices on a transmission medium.
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.
  • the processor 500 may be a central processor (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device). , CPLD).
  • CPU central processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • FPGA field programmable gate array
  • CPLD complex programmable logic device
  • both the compression end and the decompression end provided in the embodiments of the present disclosure may be terminals or network side devices.
  • a data transmission device provided by an embodiment of the present disclosure is applied to a decompression end, and the device includes:
  • the memory 620 is used to store program instructions
  • the processor 600 is configured to call the program instructions stored in the memory, and execute according to the obtained program:
  • the dictionary information includes at least one of the following contents:
  • the bearer information includes a bearer identifier.
  • the processor 600 is further configured to: receive the dictionary information in one of the following forms:
  • Radio resource control RRC signaling or;
  • Packet data unit PDU through the packet data convergence protocol PDCP, or;
  • the dictionary information is sent by the base station, or pre-configured by the core network, or pre-stored.
  • the transceiver 610 is configured to receive and send data under the control of the processor 600.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 600 and various circuits of the memory represented by the memory 620 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein.
  • the bus interface provides the interface.
  • the transceiver 610 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium.
  • the user interface 630 may also be an interface capable of connecting externally and internally with the required equipment.
  • the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.
  • the processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 when performing operations.
  • the processor 600 may be a CPU (central embedded device), ASIC (Application Specific Integrated Circuit, application-specific integrated circuit), FPGA (Field-Programmable Gate Array, field programmable gate array), or CPLD (Complex Programmable Logic Device). , Complex programmable logic device).
  • a data transmission device provided by an embodiment of the present disclosure is applied to a compression end, and the device includes:
  • the compression unit 11 is configured to compress data according to dictionary information including a mapping relationship between data information and a dictionary, and generate compressed data;
  • the sending unit 12 is configured to send the compressed data to the receiving end.
  • the dictionary information includes at least one of the following contents:
  • the bearer information includes a bearer identifier.
  • the sending unit 12 is further configured to send the dictionary information to the decompression end through a message in one of the following forms:
  • Radio resource control RRC signaling or;
  • Packet data unit PDU through the packet data convergence protocol PDCP, or;
  • the dictionary information is sent by the base station, or pre-configured by the core network, or pre-stored.
  • a data transmission device provided by an embodiment of the present disclosure is applied to a decompression end, and the device includes:
  • the receiving unit 21 is configured to receive compressed data obtained by compression according to dictionary information containing a mapping relationship between data information and a dictionary;
  • the decompression unit 22 is configured to use the dictionary information to decompress the compressed data.
  • the dictionary information includes at least one of the following contents:
  • the bearer information includes a bearer identifier.
  • the receiving unit 21 is further configured to receive the dictionary information through a message in one of the following forms:
  • Radio resource control RRC signaling or;
  • Packet data unit PDU through the packet data convergence protocol PDCP, or;
  • the dictionary information is sent by the base station, or pre-configured by the core network, or pre-stored.
  • the division of units in the embodiments of the present disclosure is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • the functional units in the various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present disclosure essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the methods described in the various embodiments of the present disclosure.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .
  • the embodiments of the present disclosure provide a computing device, and the computing device may specifically be a desktop computer, a portable computer, a smart phone, a tablet computer, a personal digital assistant (Personal Digital Assistant, PDA), etc.
  • the computing device may include a central processing unit (CPU), a memory, an input/output device, etc.
  • the input device may include a keyboard, a mouse, a touch screen, etc.
  • an output device may include a display device, such as a liquid crystal display (Liquid Crystal Display, LCD), Cathode Ray Tube (CRT), etc.
  • the memory may include read-only memory (ROM) and random access memory (RAM), and provides the processor with program instructions and data stored in the memory.
  • ROM read-only memory
  • RAM random access memory
  • the memory may be used to store the program of any of the methods provided in the embodiment of the present disclosure.
  • the processor calls the program instructions stored in the memory, and the processor is configured to execute any of the methods provided in the embodiments of the present disclosure according to the obtained program instructions.
  • the embodiment of the present disclosure provides a computer storage medium for storing computer program instructions used by the device provided in the foregoing embodiment of the present disclosure, which includes a program for executing any method provided in the foregoing embodiment of the present disclosure.
  • the computer storage medium may be any available medium or data storage device that can be accessed by the computer, including but not limited to magnetic storage (such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)), etc.
  • magnetic storage such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage such as CD, DVD, BD, HVD, etc.
  • semiconductor memory such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)
  • the method provided in the embodiments of the present disclosure can be applied to terminal equipment and also can be applied to network equipment.
  • the terminal equipment can also be called User Equipment (User Equipment, referred to as "UE"), Mobile Station (Mobile Station, referred to as “MS”), Mobile Terminal (Mobile Terminal), etc.
  • UE User Equipment
  • MS Mobile Station
  • Mobile Terminal Mobile Terminal
  • the terminal can It has the ability to communicate with one or more core networks via a Radio Access Network (RAN).
  • RAN Radio Access Network
  • the terminal can be a mobile phone (or called a "cellular" phone), or a mobile computer, etc.
  • the terminal may also be a portable, pocket-sized, handheld, computer built-in or vehicle-mounted mobile device.
  • the network device may be a base station (for example, an access point), which refers to a device that communicates with a wireless terminal through one or more sectors on an air interface in an access network.
  • the base station can be used to convert received air frames and IP packets into each other, and act as a router between the wireless terminal and the rest of the access network, where the rest of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate the attribute management of the air interface.
  • the base station can be a base station (BTS, Base Transceiver Station) in GSM or CDMA, a base station (NodeB) in WCDMA, or an evolved base station (NodeB or eNB or e-NodeB, evolutional NodeB) in LTE. B), or gNB in the 5G system, etc.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB evolved base station
  • gNB evolutional NodeB
  • the processing flow of the above method can be implemented by a software program, which can be stored in a storage medium, and when the stored software program is called, the above method steps are executed.
  • the compression end and the decompression end perform data compression/decompression according to the mapping relationship between the compressed data and the dictionary. This solves the problem of low compression efficiency due to packet loss in the RLC UM mode.
  • the embodiments of the present disclosure can be provided as methods, systems, or computer program products. Therefore, the present disclosure may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

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Abstract

本公开公开了数据传输方法及装置，用以根据字典信息执行数据压缩传输处理，解决了RLC UM模式下，由于丢包造成压缩效率较低的问题。本公开实施例提供的一种数据传输方法，应用于压缩端，该方法包括：根据包含数据信息与字典的映射关系的字典信息对数据进行压缩，生成压缩后数据；向接收端发送所述压缩后数据。

Description

数据传输方法及装置
相关申请的交叉引用
本公开要求在2019年07月03日提交中国专利局、申请号为201910594723.1、申请名称为“数据传输方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及通信技术领域，尤其涉及数据传输方法及装置。
背景技术
现有技术在数据传输过程中，数据量较大时，会造成传输资源紧张。特别是在小区边缘位置，终端的上行功率受限，大数据包的传输成功率也会受影响。因此，为了提升系统无线资源利用率，提出了上行数据压缩(Uplink Data Compression，UDC)的概念。
UDC，即使用现有的开源压缩算法，对上行(UL)数据包进行压缩后，再传输。和鲁棒报头压缩(RObust Header Compression，ROHC)不同的是，ROHC只对数据包的头执行压缩，而UDC可以对整个PDCP SDU执行压缩，所以压缩效率特别是针对大包，会更高。
目前，UDC是通过RRC配置的。终端(User Equipment，UE)会预存储一个字典，网络侧和UE保持字典的同步。UE根据字典执行UDC压缩，并将压缩后的数据包发送给网络侧。网络侧根据字典进行解压缩。
RLC AM模式：
4G/5G系统都支持RLC确认模式(Acknowledged Mode，AM)模式。RLC AM模式下，发送端通过分段/级联等方式将RLC服务数据单元(Service Data Unit，SDU)组成RLC分组数据单元(Packet Data Unit，PDU)，并标注RLC辅基站(Secondary Node，SN)号。RLC接收端根据SN号获知哪些RLC PDU没有收到，并发送状态报告给发送端。发送端收到状态报告后，根据状态报告来完成没有收到RLC PDU的重传。
因此RLC AM模式下能够保证数据包发送可靠性，即非常低的丢包率。
RLC UM模式：
4G/5G系统都支持RLC非确认模式(Unacknowledged Mode，UM)模式。RLC UM模式下，发送端通过分段/级联等方式将RLC SDU组成RLC PDU，并标注RLC SN号。这 些和RLC AM是一样。但是RLC UM模式下，接收端不会发送状态报告，而发送端无法获知哪些数据包丢失，从而也不会重传丢失RLC的PDU。这点无法保证数据传输的较低的丢包率。
但是由于不涉及重传，所以RLC UM模式下，数据的传输速率会大于RLC AM模式。所以对于一些对丢包率不敏感，而对发送延迟敏感的数据，会选择RLC UM模式。
目前，UDC是针对RLC AM实体配置的。而由于UDC的字典是根据传输状态更新，如果接收端无法接收一些数据包，会造成字典更新程度与发送端不一致，进而造成后续数据包解压失败的问题。
由于UDC所使用的字典是根据传输状态更新的，在RLC UM模式下，无法保证数据能够全部接收成功，并且UM模式下允许丢包，从而接收端无法接收一些数据包，会造成字典更新程度与发送端不一致，进而造成后续数据包解压失败的问题，因此UDC无法应用到RLC UM模式下，导致UDC的使用场景受限。
发明内容
本公开实施例提供了数据传输方法及装置，用以根据字典信息执行数据压缩传输处理，解决了RLC UM模式下，由于丢包造成压缩效率较低的问题。
本公开实施例提供的一种数据传输方法，应用于压缩端，该方法包括：
根据包含数据信息与字典的映射关系的字典信息对数据进行压缩，生成压缩后数据；
向接收端发送所述压缩后数据。
本公开实施例通过根据包含数据信息与字典的映射关系的字典信息对数据进行压缩，生成压缩后数据；向接收端发送所述压缩后数据，从而实现了根据字典信息执行数据压缩传输处理，解决了RLC UM模式下，由于丢包造成压缩效率较低的问题。
可选地，所述字典信息至少包括下列内容之一：
数据流与字典的映射关系；
数据包长度与字典的映射关系；
无线链路控制RLC模式与字典的映射关系；
承载信息与字典的映射关系。
可选地，所述承载信息包括承载的标识。
可选地，该方法还包括通过如下形式之一的消息将所述字典信息发送给解压缩端：
无线资源控制RRC信令，或者；
通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
通过PDCP包头。
可选地，当所述压缩端是终端时，所述字典信息是基站发送的；
或者，所述字典信息是核心网预先配置的；
或者，所述字典信息是预先存储的。
本公开实施例提供的一种数据传输方法，应用于解压缩端，该方法包括：
接收根据包含数据信息与字典的映射关系的字典信息进行压缩得到的压缩后数据；
利用所述字典信息，对所述压缩后数据进行解压缩。
可选地，所述字典信息至少包括下列内容之一：
数据流与字典的映射关系；
数据包长度与字典的映射关系；
无线链路控制RLC模式与字典的映射关系；
承载信息与字典的映射关系。
可选地，所述承载信息包括承载的标识。
可选地，该方法还包括通过如下形式之一的消息接收所述字典信息：
无线资源控制RRC信令，或者；
通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
通过PDCP包头。
可选地，当所述压缩端是终端时，所述字典信息是基站发送的；
或者，所述字典信息是核心网预先配置的；
或者，所述字典信息是预先存储的。
本公开实施例提供的一种数据传输装置，应用于压缩端，该装置包括：
存储器，用于存储程序指令；
处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
根据包含数据信息与字典的映射关系的字典信息对数据进行压缩，生成压缩后数据；
向接收端发送所述压缩后数据。
可选地，所述字典信息至少包括下列内容之一：
数据流与字典的映射关系；
数据包长度与字典的映射关系；
无线链路控制RLC模式与字典的映射关系；
承载信息与字典的映射关系。
可选地，所述承载信息包括承载的标识。
可选地，所述处理器还用于：通过如下形式之一的消息将所述字典信息发送给解压缩端：
无线资源控制RRC信令，或者；
通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
通过PDCP包头。
可选地，当所述压缩端是终端时，所述字典信息是基站发送的；
或者，所述字典信息是核心网预先配置的；
或者，所述字典信息是预先存储的。
本公开实施例提供的一种数据传输装置，应用于解压缩端，该装置包括：
存储器，用于存储程序指令；
处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
接收根据包含数据信息与字典的映射关系的字典信息进行压缩得到的压缩后数据；
利用所述字典信息，对所述压缩后数据进行解压缩。
可选地，所述字典信息至少包括下列内容之一：
数据流与字典的映射关系；
数据包长度与字典的映射关系；
无线链路控制RLC模式与字典的映射关系；
承载信息与字典的映射关系。
可选地，所述承载信息包括承载的标识。
可选地，所述处理器还用于：通过如下形式之一的消息接收所述字典信息：
无线资源控制RRC信令，或者；
通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
通过PDCP包头。
可选地，当所述压缩端是终端时，所述字典信息是基站发送的；
或者，所述字典信息是核心网预先配置的；
或者，所述字典信息是预先存储的。
本公开实施例提供的一种数据传输装置，应用于压缩端，该装置包括：
压缩单元，用于根据包含数据信息与字典的映射关系的字典信息对数据进行压缩，生成压缩后数据；
发送单元，用于向接收端发送所述压缩后数据。
可选地，所述字典信息至少包括下列内容之一：
数据流与字典的映射关系；
数据包长度与字典的映射关系；
无线链路控制RLC模式与字典的映射关系；
承载信息与字典的映射关系。
可选地，所述承载信息包括承载的标识。
可选地，所述发送单元还用于：通过如下形式之一的消息将所述字典信息发送给解压缩端：
无线资源控制RRC信令，或者；
通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
通过PDCP包头。
可选地，当所述压缩端是终端时，所述字典信息是基站发送的；
或者，所述字典信息是核心网预先配置的；
或者，所述字典信息是预先存储的。
本公开实施例提供的一种数据传输装置，应用于解压缩端，该装置包括：
接收单元，用于接收根据包含数据信息与字典的映射关系的字典信息进行压缩得到的压缩后数据；
解压缩单元，用于利用所述字典信息，对所述压缩后数据进行解压缩。
可选地，所述字典信息至少包括下列内容之一：
数据流与字典的映射关系；
数据包长度与字典的映射关系；
无线链路控制RLC模式与字典的映射关系；
承载信息与字典的映射关系。
可选地，所述承载信息包括承载的标识。
可选地，所述接收单元还用于：通过如下形式之一的消息接收所述字典信息：
无线资源控制RRC信令，或者；
通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
通过PDCP包头。
可选地，当所述压缩端是终端时，所述字典信息是基站发送的；
或者，所述字典信息是核心网预先配置的；
或者，所述字典信息是预先存储的。
本公开另一实施例提供了一种计算设备，其包括存储器和处理器，其中，所述存储器用于存储程序指令，所述处理器用于调用所述存储器中存储的程序指令，按照获得的程序执行上述任一种方法。
本公开另一实施例提供了一种计算机存储介质，所述计算机存储介质存储有计算机可执行指令，所述计算机可执行指令用于使所述计算机执行上述任一种方法。
附图说明
为了更清楚地说明本公开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是本公开的一些实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本公开实施例提供的发送端的一种数据传输方法的流程示意图；
图2为本公开实施例提供的接收端的一种数据传输方法的流程示意图；
图3为本公开实施例提供的发送端的一种数据传输装置的结构示意图；
图4为本公开实施例提供的接收端的一种数据传输装置的结构示意图；
图5为本公开实施例提供的发送端的另一种数据传输装置的结构示意图；
图6为本公开实施例提供的接收端的另一种数据传输装置的结构示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，并不是全部的实施例。基于本公开中的实施例，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他实施例，都属于本公开保护的范围。
本公开实施例提供了数据传输方法及装置，用以根据字典信息执行数据压缩传输处理，解决了RLC UM模式下，由于丢包造成压缩效率较低的问题。
其中，方法和装置是基于同一申请构思的，由于方法和装置解决问题的原理相似，因此装置和方法的实施可以相互参见，重复之处不再赘述。
本公开实施例提供的技术方案可以适用于多种系统，尤其是5G系统。例如适用的系统可以是全球移动通讯(global system of mobile communication，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)通用分组无线业务(general packet radio service，GPRS)系统、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)系统、5G系统以及5G NR系统等。这多种系统中均包括终端设备和网络设备。
本公开实施例涉及的终端设备，可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。在不同的系统 中，终端设备的名称可能也不相同，例如在5G系统中，终端设备可以称为用户设备(user equipment，UE)。无线终端设备可以经RAN与一个或多个核心网进行通信，无线终端设备可以是移动终端设备，如移动电话(或称为“蜂窝”电话)和具有移动终端设备的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiated protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)等设备。无线终端设备也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、用户装置(user device)，本公开实施例中并不限定。
本公开实施例涉及的网络设备，可以是基站，该基站可以包括多个小区。根据具体应用场合不同，基站又可以称为接入点，或者可以是指接入网中在空中接口上通过一个或多个扇区与无线终端设备通信的设备，或者其它名称。网络设备可用于将收到的空中帧与网际协议(internet protocol，IP)分组进行相互转换，作为无线终端设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)通信网络。网络设备还可协调对空中接口的属性管理。例如，本公开实施例涉及的网络设备可以是全球移动通信系统(global system for mobile communications，GSM)或码分多址接入(code division multiple access，CDMA)中的网络设备(base transceiver station，BTS)，也可以是带宽码分多址接入(wide-band code division multiple access，WCDMA)中的网络设备(NodeB)，还可以是长期演进(long term evolution，LTE)系统中的演进型网络设备(evolutional node B，eNB或e-NodeB)、5G网络架构(next generation system)中的5G基站，也可是家庭演进基站(home evolved node B，HeNB)、中继节点(relay node)、家庭基站(femto)、微微基站(pico)等，本公开实施例中并不限定。
下面结合说明书附图对本公开各个实施例进行详细描述。需要说明的是，本公开实施例的展示顺序仅代表实施例的先后顺序，并不代表实施例所提供的技术方案的优劣。
现有技术在RLC UM模式下无法使用动态字典，动态字典的含义是：压缩端(即发送端)和解压缩端(即接收端)可以按照压缩状态更新字典信息。但是对于其他的压缩业务，即除了UDC的压缩业务，如果RLC UM模式导致压缩出现问题，可以使用本公开实施例提供的技术方案。
本公开实施例提供的技术方案，适用于终端侧，也适用于网络侧，本公开实施例提供的技术方案包括：
UE或者网络侧按照字典信息执行数据压缩/解压缩；
当压缩端是终端时，字典信息是基站发送的；
或者，字典信息是核心网预先配置的；
或者，字典信息是预先存储的；
所述字典信息是通过如下形式之一的消息发送给解压缩端，或者，所述字典信息是通过如下形式之一的消息从压缩端接收的：
无线资源控制(Radio Resource Control，RRC)信令；
PDCP控制分组数据单元(Packet Data Unit，PDU)；
分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)的包头。
所述字典信息，可以包括DRB(Data RB，终端与基站之间的数据承载)与字典的映射关系；
或者，所述字典信息，可以包括数据流与字典的映射关系；
或者，所述字典信息，可以包括数据包(服务数据单元(Service Data Unit，SDU)/PDU)与字典的映射关系；
或者，所述字典信息，可以包括无线链路控制(Radio Link Control，RLC)模式与字典的映射关系。
实施例一：UE根据字典信息选择字典，所述字典信息包括承载信息与字典的映射关系、数据流与字典的映射关系、数据包长度与字典的映射关系、无线链路控制RLC模式与字典的映射关系、服务质量(Quality of Service，QoS)信息。
步骤一：UE预先存储多个字典。
具体的，多个字典可以是运营商配置的，比如通过广播消息/专有信令发送给UE，进一步，网络侧可以根据UE建立的承载信息来发送该承载信息对应的字典给UE；或者，网络侧可以根据UE的能力来发送该UE的能力对应的字典给UE。可选的，基站在向UE发送字典之前，UE发送字典请求信息给基站，基站基于UE的请求，向UE发送字典。
字典也可以是UE预先存储的，比如存储在用户身份识别卡(Subscriber Identification Module，SIM)中。
步骤二：UE根据字典信息执行数据压缩过程。
UE执行数据压缩过程。可选的，UE根据字典信息选择字典执行压缩。所述字典信息，可以是网络发送的指示信息，比如网络侧指示信息，或核心网配置信息，或存储的压缩指示信息等，用于指示字典与待压缩数据的映射关系。
方式1)、字典信息可以是待压缩数据的承载属性与字典的映射关系。举例，网络侧配置UE的DRB1对应的字典为字典1，网络侧配置DRB2对应的字典为字典2。那么，UE在压缩DRB1上的数据时，会根据字典信息，选择字典1执行压缩，再将压缩后的数据发送给网络侧。同理，UE在压缩DRB2上的数据时，选择字典2执行压缩，再将压缩 后的数据发送给网络侧。这样，在PDCP侧，不同的承载可以根据不同的字典执行压缩，使得压缩效率更高。
当然，承载与字典的映射关系，可以是一对多，即一个DRB可以对应多个字典，UE可以数据包长短进行选择；也可以是多对一，即多个DRB对应一个字典；也可以是一对一，这里不作限制。
方式2)、在另一种可能的方式中，字典信息可以是待压缩数据的数据流属性与字典的映射关系。举例，当前的PDCP实体中对应的数据流可以是多个(具体是根据SDAP层来映射的)。举例，网络侧配置数据流1对应的字典为字典1，数据流2对应的字典为字典2。那么UE在压缩数据流1上的数据时，根据指示信息，选择字典执行压缩，在将压缩后的数据发送给网络侧。同理，UE在压缩数据流2上的数据时，选择字典2执行压缩，再将压缩后的数据发送给网络侧。这样，在PDCP侧，将承载细化到数据流，不同的数据流根据不同的字典执行压缩，提高了压缩效率。
当然，数据流与字典的映射关系，可以是一对多，即一个数据流可以对应多个字典，UE可以数据包长短进行进一步选择哪一字典；也可以是多对一，即多个数据流对应一个字典；也可以是一对一，这里不作限制。
方式3)、字典信息可以是数据包长度与字典的对应关系。
具体来讲，网络向UE发送不同数据长短对应不同字典的映射关系。举例来讲，数据包的字节长度0-x对应字典1，数据包的字节长度x+1～y对应字典2，数据包的字节长度y+1～z对应字典3，以此类推。那么当UE的PDCP SDU数据包的长度分别对应不同的长度区间时，通过PDCP SDU或PDU与字典的关系执行数据压缩。
方式4)、字典信息可以是网络侧配置的RLC模式与字典的对应关系。
这种情况下，网络侧配置UE根据RLC模式选择字典。
如果网络侧配置的RLC模式是AM模式，那么UE将执行动态字典的压缩方式，即字典是根据实时压缩情况更新的。当网络侧配置的RLC模式是UM模式时，那么UE将执行静态字典的压缩方式，即字典是预配置的。
步骤三：UE将压缩字典所基于的字典信息发送给网络侧，以方便网络侧执行解压缩。
此步骤是可选步骤，如果网络未知压缩数据与字典的关系，那么网络侧可以根据接收到的数据执行解压缩。
实施例二：网络侧根据字典信息选择字典，执行压缩。
步骤一：网络侧预存储多个字典。
具体的，多个字典可以是运营商配置的，可以是根据UE的能力来配置的。
步骤二：网络侧根据字典信息执行数据压缩过程。
网络侧执行UDC压缩。可选的，网络侧根据字典信息选择字典执行压缩。所述字典 信息，可以是核心网配置信息，或存储的压缩指示信息等，用于指示字典与待压缩数据的映射关系。
方式1)、举例来讲，字典信息可以是待压缩数据的承载属性与字典的映射关系。举例，DRB1对应的字典为字典1，DRB2对应的字典为字典2。那么，网络侧在压缩DRB1的数据时，会根据字典信息，选择字典1执行压缩，再将压缩后的数据发送给UE。同理，网络侧在压缩DRB2上的数据时，选择字典2执行压缩，再将压缩后的数据发送给UE。这样，在PDCP侧，不同的承载可以根据不同的字典执行压缩，使得压缩效率更高。
当然，承载与字典的映射关系，可以是一对多，即一个DRB可以是对应多个字典，UE可以数据包长短进一步进行选择哪个字典；承载与字典的映射关系也可以是多对一，即多个DRB对应一个字典；也可以是一对一，这里不作限制。
方式2)、在另一种可能的方式中，字典信息可以是待压缩数据的流属性与字典的映射关系。举例，当前的PDCP实体中对应的数据流可以是多个(具体是根据业务数据适配协议(Service Data Adaptation Protocol，SDAP)层来映射的)。举例，数据流1对应的字典为字典1，数据流2对应的字典为字典2，那么网络侧在压缩数据流1上的数据时，根据字典信息，选择字典执行压缩，然后将压缩后的数据发送给UE。同理，网络侧在压缩数据流2上的数据时，选择字典2执行压缩，再将压缩后的数据发送给UE。这样，在PDCP侧，将承载细化到数据流，不同的数据流根据不同的字典执行压缩，提高了压缩效率，但是增加了复杂度。
当然，数据流与字典的映射关系，可以是一对多，即一个数据流可以是对应多个字典，UE可以根据数据包长短进行进一步的选择；也可以是多对一，即多个数据流对应一个字典；也可以是一对一，这里不作限制。
方式3)、字典信息可以是数据包长度与字典的对应关系。
具体来讲，网络侧存储不同数据长短对应不同字典的映射关系。举例来讲，字节长度0-x对应字典1，字节长度x+1～y对应字典2，字节长度y+1～z对应字典3，以此类推。那么当网络侧的PDCP SDU/PDU长度分别对应不同的长度区间时，匹配PDCP SDU或PDU与字典的关系执行数据压缩。
方式4)、字典信息可以是根据网络侧配置的RLC模式与字典的对应关系。
这种情况下，网络侧根据RLC模式选择字典。
如果网络侧配置的RLC模式是AM模式，那么网络侧将执行动态字典的压缩方式，即字典是根据实时压缩情况更新的。当RLC模式为UM模式时，那么网络侧将执行静态字典的压缩方式，即字典上预配置的。
步骤三：网络侧将压缩字典所基于的字典信息发送给UE，以方便UE执行解压缩。
此步骤是可选步骤，UE根据接收到的数据执行解压缩。
以上实施例一和实施例二，是终端和网络侧分别作为压缩端的情况。
下面介绍两个实施例，是终端和网络侧分别作为解压缩端的情况。
实施例三：UE端执行解压缩过程。
步骤一：UE侧预存储多个字典。
终端获取字典的方式可以有多种，例如预先存储，网络侧发送给终端等等。
步骤二：UE收到压缩后数据后，执行数据解压缩。
可选的，UE根据网络侧的指示信息执行解压缩过程。
具体的，指示信息可以包括字典，字典与数据的映射关系，字典索引号中的一个或多个信息等。这些信息可以通过一条或多条信令发送给UE。可以通过RRC信令，也可以通过PDCP控制PDU，或PDCP的头指示给UE。这里不做赘述。
其中字典与压缩数据的映射关系同实施利一，例如：
可以是压缩数据的承载属性与字典的映射关系；
可以是压缩数据的数据流属性与字典的映射关系；
可以是数据包长度与字典的对应关系；
可以是RLC模式与字典的对应关系。
实施例四：网络侧执行解压缩过程。
步骤一：网络侧预存储多个字典。
步骤二：网络侧收到压缩数据后，执行数据解压缩。
可选的，网络侧执行解压缩之前，接收核心网/UE发送的字典与压缩数据的映射关系，该映射关系也可以是网络侧自己存储的。这里不做赘述。
具体的映射关系可以是：
1)、数据承载与字典的映射关系；比如，具体的DRB1与字典1相对应，DRB2与字典2相对应。当网络侧接收到DRB1的数据时，按照字典1执行解压缩；接收到DRB2上的压缩数据时，按照字典2执行解压缩。
2)、数据流与字典的映射关系，比如数据流1对应字典1，数据流2对应字典2。同时，网络侧的PDCP通过SDAP获取了数据流的信息，如果接收的数据属于数据流1，那么将按照字典1执行数据解压缩，如果收到的数据属于数据流2，那么将按照字典2执行数据解压缩。
3)、数据包长度与字典的映射关系。举例来讲，字节长度0-x对应字典1，字节长度x+1～y对应字典2，字节长度y+1～z对应字典3，以此类推。那么当网络侧接收到的PDCP SDU/PDU长度分别对应不同的字节长度区间时，匹配PDCP SDU或PDU数据包长度与字典的关系执行数据解压缩。
综上所述，参见图1，本公开实施例提供的一种数据传输方法，应用于压缩端(即发 送端)，该方法包括：
S101、根据包含数据信息与字典的映射关系的字典信息对数据进行压缩，生成压缩后数据；
S102、向接收端发送所述压缩后数据。
本公开实施例通过根据包含数据信息与字典的映射关系的字典信息对数据进行压缩，生成压缩后数据；向接收端发送所述压缩后数据，从而实现了根据字典信息执行数据压缩传输处理，解决了RLC UM模式下，由于丢包造成压缩效率较低的问题。
可选地，所述字典信息至少包括下列内容之一：
数据流与字典的映射关系；
数据包长度与字典的映射关系；
无线链路控制RLC模式与字典的映射关系；
承载信息与字典的映射关系。
可选地，所述承载信息包括承载的标识。当然，所述承载信息还可以包括其他信息。
可选地，该方法还包括通过如下形式之一的消息将所述字典信息发送给解压缩端：
无线资源控制RRC信令，或者；
通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
通过PDCP包头。
可选地，所述字典信息是基站发送的，或者是核心网预先配置的，或者是预先存储的。
相应地，参见图2，本公开实施例提供的一种数据传输方法，应用于解压缩端(即接收端)，该方法包括：
S201、接收根据包含数据信息与字典的映射关系的字典信息进行压缩得到的压缩后数据；
S202、利用所述字典信息，对所述压缩后数据进行解压缩。
可选地，所述字典信息至少包括下列内容之一：
数据流与字典的映射关系；
数据包长度与字典的映射关系；
无线链路控制RLC模式与字典的映射关系；
承载信息与字典的映射关系。
可选地，所述承载信息包括承载的标识。
可选地，该方法还包括通过如下形式之一的消息接收所述字典信息：
无线资源控制RRC信令，或者；
通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
通过PDCP包头。
可选地，所述字典信息是基站发送的，或者是核心网预先配置的，或者是预先存储的。
参见图3，本公开实施例提供的一种数据传输装置，应用于压缩端，该装置包括：
存储器520，用于存储程序指令；
处理器500，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
根据包含数据信息与字典的映射关系的字典信息对数据进行压缩，生成压缩后数据；
向接收端发送所述压缩后数据。
可选地，所述字典信息至少包括下列内容之一：
数据流与字典的映射关系；
数据包长度与字典的映射关系；
无线链路控制RLC模式与字典的映射关系；
承载信息与字典的映射关系。
可选地，所述承载信息包括承载的标识。
可选地，所述处理器500还用于：通过如下形式之一的消息将所述字典信息发送给解压缩端：
无线资源控制RRC信令，或者；
通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
通过PDCP包头。
可选地，所述字典信息是基站发送的，或者是核心网预先配置的，或者是预先存储的。
收发机510，用于在处理器500的控制下接收和发送数据。
其中，在图3中，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500代表的一个或多个处理器和存储器520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。收发机510可以是多个元件，即包括发送机和收发机，提供用于在传输介质上与各种其他装置通信的单元。处理器500负责管理总线架构和通常的处理，存储器520可以存储处理器500在执行操作时所使用的数据。
处理器500可以是中央处埋器(CPU)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field－Programmable Gate Array，FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device，CPLD)。
需要说明的是，本公开实施例提供的压缩端和解压缩端都可以是终端，也可以是网络侧设备。
参见图4，本公开实施例提供的一种数据传输装置，应用于解压缩端，该装置包括：
存储器620，用于存储程序指令；
处理器600，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
接收根据包含数据信息与字典的映射关系的字典信息进行压缩得到的压缩后数据；
利用所述字典信息，对所述压缩后数据进行解压缩。
可选地，所述字典信息至少包括下列内容之一：
数据流与字典的映射关系；
数据包长度与字典的映射关系；
无线链路控制RLC模式与字典的映射关系；
承载信息与字典的映射关系。
可选地，所述承载信息包括承载的标识。
可选地，所述处理器600还用于：通过如下形式之一的消息接收所述字典信息：
无线资源控制RRC信令，或者；
通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
通过PDCP包头。
可选地，所述字典信息是基站发送的，或者是核心网预先配置的，或者是预先存储的。
收发机610，用于在处理器600的控制下接收和发送数据。
其中，在图4中，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600代表的一个或多个处理器和存储器620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。收发机610可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口630还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器600负责管理总线架构和通常的处理，存储器620可以存储处理器600在执行操作时所使用的数据。
可选的，处理器600可以是CPU(中央处埋器)、ASIC(Application Specific Integrated Circuit，专用集成电路)、FPGA(Field－Programmable Gate Array，现场可编程门阵列)或CPLD(Complex Programmable Logic Device，复杂可编程逻辑器件)。
参见图5，本公开实施例提供的一种数据传输装置，应用于压缩端，该装置包括：
压缩单元11，用于根据包含数据信息与字典的映射关系的字典信息对数据进行压缩，生成压缩后数据；
发送单元12，用于向接收端发送所述压缩后数据。
可选地，所述字典信息至少包括下列内容之一：
数据流与字典的映射关系；
数据包长度与字典的映射关系；
无线链路控制RLC模式与字典的映射关系；
承载信息与字典的映射关系。
可选地，所述承载信息包括承载的标识。
可选地，所述发送单元12还用于：通过如下形式之一的消息将所述字典信息发送给解压缩端：
无线资源控制RRC信令，或者；
通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
通过PDCP包头。
可选地，所述字典信息是基站发送的，或者是核心网预先配置的，或者是预先存储的。
参见图6，本公开实施例提供的一种数据传输装置，应用于解压缩端，该装置包括：
接收单元21，用于接收根据包含数据信息与字典的映射关系的字典信息进行压缩得到的压缩后数据；
解压缩单元22，用于利用所述字典信息，对所述压缩后数据进行解压缩。
可选地，所述字典信息至少包括下列内容之一：
数据流与字典的映射关系；
数据包长度与字典的映射关系；
无线链路控制RLC模式与字典的映射关系；
承载信息与字典的映射关系。
可选地，所述承载信息包括承载的标识。
可选地，所述接收单元21还用于：通过如下形式之一的消息接收所述字典信息：
无线资源控制RRC信令，或者；
通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
通过PDCP包头。
可选地，所述字典信息是基站发送的，或者是核心网预先配置的，或者是预先存储的。
需要说明的是，本公开实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现 出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
本公开实施例提供了一种计算设备，该计算设备具体可以为桌面计算机、便携式计算机、智能手机、平板电脑、个人数字助理(Personal Digital Assistant，PDA)等。该计算设备可以包括中央处理器(Center Processing Unit，CPU)、存储器、输入/输出设备等，输入设备可以包括键盘、鼠标、触摸屏等，输出设备可以包括显示设备，如液晶显示器(Liquid Crystal Display，LCD)、阴极射线管(Cathode Ray Tube，CRT)等。
存储器可以包括只读存储器(ROM)和随机存取存储器(RAM)，并向处理器提供存储器中存储的程序指令和数据。在本公开实施例中，存储器可以用于存储本公开实施例提供的任一所述方法的程序。
处理器通过调用存储器存储的程序指令，处理器用于按照获得的程序指令执行本公开实施例提供的任一所述方法。
本公开实施例提供了一种计算机存储介质，用于储存为上述本公开实施例提供的装置所用的计算机程序指令，其包含用于执行上述本公开实施例提供的任一方法的程序。
所述计算机存储介质可以是计算机能够存取的任何可用介质或数据存储设备，包括但不限于磁性存储器(例如软盘、硬盘、磁带、磁光盘(MO)等)、光学存储器(例如CD、DVD、BD、HVD等)、以及半导体存储器(例如ROM、EPROM、EEPROM、非易失性存储器(NAND FLASH)、固态硬盘(SSD))等。
本公开实施例提供的方法可以应用于终端设备，也可以应用于网络设备。
其中，终端设备也可称之为用户设备(User Equipment，简称为“UE”)、移动台(Mobile Station，简称为“MS”)、移动终端(Mobile Terminal)等，可选的，该终端可以具备经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信的能力，例如，终端可以是移动电话(或称为“蜂窝”电话)、或具有移动性质的计算机等，例如，终端还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。
网络设备可以为基站(例如，接入点)，指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换，作为无线终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)网络。基站还可协调对空中接口的属性管理。例如，基站可以是GSM或CDMA中的基站(BTS，Base Transceiver Station)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，或者也可以是5G系统中的gNB 等。本公开实施例中不做限定。
上述方法处理流程可以用软件程序实现，该软件程序可以存储在存储介质中，当存储的软件程序被调用时，执行上述方法步骤。
综上所述，本公开实施例提供的技术方案中，压缩端和解压缩端根据压缩数据与字典的映射关系执行数据压缩/解压缩。从而解决了RLC UM模式下，由于丢包造成压缩效率较低的问题。
本领域内的技术人员应明白，本公开的实施例可提供为方法、系统、或计算机程序产品。因此，本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本公开是参照根据本公开实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (31)

  1. 一种数据传输方法，应用于压缩端，其特征在于，该方法包括：
    根据包含数据信息与字典的映射关系的字典信息对数据进行压缩，生成压缩后数据；
    向接收端发送所述压缩后数据。
  2. 根据权利要求1所述的方法，其特征在于，所述字典信息至少包括下列内容之一：
    数据流与字典的映射关系；
    数据包长度与字典的映射关系；
    无线链路控制RLC模式与字典的映射关系；
    承载信息与字典的映射关系。
  3. 根据权利要求2所述的方法，其特征在于，所述承载信息包括承载的标识。
  4. 根据权利要求1所述的方法，其特征在于，该方法还包括通过如下形式之一的消息将所述字典信息发送给解压缩端：
    无线资源控制RRC信令，或者；
    通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
    通过PDCP包头。
  5. 根据权利要求1所述的方法，其特征在于，当所述压缩端是终端时，所述字典信息是基站发送的；
    或者，所述字典信息是核心网预先配置的；
    或者，所述字典信息是预先存储的。
  6. 一种数据传输方法，应用于解压缩端，其特征在于，该方法包括：
    接收根据包含数据信息与字典的映射关系的字典信息进行压缩得到的压缩后数据；
    利用所述字典信息，对所述压缩后数据进行解压缩。
  7. 根据权利要求6所述的方法，其特征在于，所述字典信息至少包括下列内容之一：
    数据流与字典的映射关系；
    数据包长度与字典的映射关系；
    无线链路控制RLC模式与字典的映射关系；
    承载信息与字典的映射关系。
  8. 根据权利要求7所述的方法，其特征在于，所述承载信息包括承载的标识。
  9. 根据权利要求6所述的方法，其特征在于，该方法还包括通过如下形式之一的消息接收所述字典信息：
    无线资源控制RRC信令，或者；
    通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
    通过PDCP包头。
  10. 根据权利要求6所述的方法，其特征在于，所述字典信息是基站发送的，或者是核心网预先配置的，或者是预先存储的。
  11. 一种数据传输装置，应用于压缩端，其特征在于，该装置包括：
    存储器，用于存储程序指令；
    处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
    根据包含数据信息与字典的映射关系的字典信息对数据进行压缩，生成压缩后数据；
    向接收端发送所述压缩后数据。
  12. 根据权利要求11所述的装置，其特征在于，所述字典信息至少包括下列内容之一：
    数据流与字典的映射关系；
    数据包长度与字典的映射关系；
    无线链路控制RLC模式与字典的映射关系；
    承载信息与字典的映射关系。
  13. 根据权利要求12所述的装置，其特征在于，所述承载信息包括承载的标识。
  14. 根据权利要求11所述的装置，其特征在于，所述处理器还用于：通过如下形式之一的消息将所述字典信息发送给解压缩端：
    无线资源控制RRC信令，或者；
    通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
    通过PDCP包头。
  15. 根据权利要求11所述的装置，其特征在于，当所述压缩端是终端时，所述字典信息是基站发送的；
    或者，所述字典信息是核心网预先配置的；
    或者，所述字典信息是预先存储的。
  16. 一种数据传输装置，应用于解压缩端，其特征在于，该装置包括：
    存储器，用于存储程序指令；
    处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行：
    接收根据包含数据信息与字典的映射关系的字典信息进行压缩得到的压缩后数据；
    利用所述字典信息，对所述压缩后数据进行解压缩。
  17. 根据权利要求16所述的装置，其特征在于，所述字典信息至少包括下列内容之一：
    数据流与字典的映射关系；
    数据包长度与字典的映射关系；
    无线链路控制RLC模式与字典的映射关系；
    承载信息与字典的映射关系。
  18. 根据权利要求17所述的装置，其特征在于，所述承载信息包括承载的标识。
  19. 根据权利要求16所述的装置，其特征在于，所述处理器还用于：通过如下形式之一的消息接收所述字典信息：
    无线资源控制RRC信令，或者；
    通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
    通过PDCP包头。
  20. 根据权利要求16所述的装置，其特征在于，当所述压缩端是终端时，所述字典信息是基站发送的；
    或者，所述字典信息是核心网预先配置的；
    或者，所述字典信息是预先存储的。
  21. 一种数据传输装置，应用于压缩端，其特征在于，该装置包括：
    压缩单元，用于根据包含数据信息与字典的映射关系的字典信息对数据进行压缩，生成压缩后数据；
    发送单元，用于向接收端发送所述压缩后数据。
  22. 根据权利要求21所述的装置，其特征在于，所述字典信息至少包括下列内容之一：
    数据流与字典的映射关系；
    数据包长度与字典的映射关系；
    无线链路控制RLC模式与字典的映射关系；
    承载信息与字典的映射关系。
  23. 根据权利要求22所述的装置，其特征在于，所述承载信息包括承载的标识。
  24. 根据权利要求21所述的装置，其特征在于，所述发送单元还用于：通过如下形式之一的消息将所述字典信息发送给解压缩端：
    无线资源控制RRC信令，或者；
    通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
    通过PDCP包头。
  25. 根据权利要求21所述的装置，其特征在于，所述字典信息是基站发送的，或者是核心网预先配置的，或者是预先存储的。
  26. 一种数据传输装置，应用于解压缩端，其特征在于，该装置包括：
    接收单元，用于接收根据包含数据信息与字典的映射关系的字典信息进行压缩得到的压缩后数据；
    解压缩单元，用于利用所述字典信息，对所述压缩后数据进行解压缩。
  27. 根据权利要求26所述的装置，其特征在于，所述字典信息至少包括下列内容之一：
    数据流与字典的映射关系；
    数据包长度与字典的映射关系；
    无线链路控制RLC模式与字典的映射关系；
    承载信息与字典的映射关系。
  28. 根据权利要求27所述的装置，其特征在于，所述承载信息包括承载的标识。
  29. 根据权利要求26所述的装置，其特征在于，所述接收单元还用于：通过如下形式之一的消息接收所述字典信息：
    无线资源控制RRC信令，或者；
    通过分组数据汇聚协议PDCP的分组数据单元PDU，或者；
    通过PDCP包头。
  30. 根据权利要求26所述的装置，其特征在于，当所述压缩端是终端时，所述字典信息是基站发送的；
    或者，所述字典信息是核心网预先配置的；
    或者，所述字典信息是预先存储的。
  31. 一种计算机存储介质，其特征在于，所述计算机存储介质存储有计算机可执行指令，所述计算机可执行指令用于使所述计算机执行权利要求1至10任一项所述的方法。
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