WO2021227026A1 - Procédé de transmission de paquets de données et dispositif de compression - Google Patents

Procédé de transmission de paquets de données et dispositif de compression Download PDF

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Publication number
WO2021227026A1
WO2021227026A1 PCT/CN2020/090546 CN2020090546W WO2021227026A1 WO 2021227026 A1 WO2021227026 A1 WO 2021227026A1 CN 2020090546 W CN2020090546 W CN 2020090546W WO 2021227026 A1 WO2021227026 A1 WO 2021227026A1
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Prior art keywords
data packet
compressed
type
feedback path
compression
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PCT/CN2020/090546
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English (en)
Chinese (zh)
Inventor
付喆
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to PCT/CN2020/090546 priority Critical patent/WO2021227026A1/fr
Priority to CN202080095077.5A priority patent/CN115039438A/zh
Publication of WO2021227026A1 publication Critical patent/WO2021227026A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/04—Protocols for data compression, e.g. ROHC

Definitions

  • the present invention relates to the field of communication technology, and in particular to a method and compression device for sending data packets.
  • the header of the data packet may be compressed before being sent.
  • the compression end device (hereinafter referred to as the compression device) can establish the context information (context) of Ethernet header compression (Ethernet headerconpression, EHC), and associate a context identity document (CID) , And then the compression device transmits a full header packet, which contains the CID and the original header information.
  • the decompression device After the decompression device receives the data packet, it can establish the context corresponding to the CID according to the information in the packet, and then transmit the positively confirmed EHC feedback information to the compression device to indicate that the compression device context is successfully established. After receiving the positively confirmed EHC feedback information, the compression device can start to send a compressed header packet.
  • the compressed header packet will contain compressed header information and uncompressed header information that is not stored in the EHC context.
  • the decompression device will restore the original header of the compressed data packet based on the CID and the stored original header information corresponding to the CID.
  • LBT Listen Before Talk
  • the decompression device before the decompression device sends the positively confirmed EHC feedback information, it needs to perform carrier sensing on the feedback path that transmits the positively confirmed EHC feedback information.
  • the EHC feedback information cannot be sent in time when the carrier is occupied.
  • To the compression device especially after the EHC feedback information is confirmed to be packaged in the media access control protocol data unit (MAC PDU), it cannot be transmitted from other carriers to the compression device.
  • the compression device can only send it all the time. Finished data packets, resulting in a lower rate of sending data packets.
  • MAC PDU media access control protocol data unit
  • the embodiment of the present invention provides a method for sending data packets, which can increase the rate of sending data packets.
  • a method for sending data packets including:
  • the second type of data packet is sent
  • the first condition includes at least one of the following: continuously sending M first-type data packets, sending N first-type data packets, compressing the feedback path LBT result, and not receiving compressed feedback information within the first preset time period , Receiving predetermined compressed feedback information within the second preset duration, exceeding the first duration, and being in an uncontrolled environment;
  • the first duration is the waiting duration for triggering the switch from sending the first type data packet to the second type data packet
  • M is an integer greater than or equal to 2
  • N is an integer greater than or equal to 1.
  • the first type of data packet is a complete data packet
  • the second type of data packet is a compressed data packet
  • the first type of data packet is a compressed data packet
  • the second type of data packet is a complete data packet
  • the compression device when the first condition is met, switching from sending a complete data packet to sending a compressed data packet, or from sending a compressed data packet to sending a complete data packet.
  • a compression device including:
  • the sending module is used to send the first type of data packet; when the first condition is met, the second type of data packet is sent;
  • the first condition includes at least one of the following: continuously sending M first-type data packets, sending one first-type data packet, compressing the feedback path LBT result, not receiving compressed feedback information within the first preset time period, The predetermined compressed feedback information is received within the second preset time period, the first time period is exceeded, and whether the environment is controlled;
  • the first duration is the waiting duration for triggering the switch from sending the first type data packet to the second type data packet
  • M is an integer greater than or equal to 2
  • N is an integer greater than or equal to 1.
  • a compression device including:
  • the transmitter is used to send the first type of data packet; when the first condition is met, the second type of data packet is sent;
  • the first condition includes at least one of the following: continuously sending M first type data packets, sending N first type data packets, compressing the feedback path LBT result, and not receiving compressed feedback within the first preset time period Information, the predetermined compressed feedback information received within the second preset time period, the first time period is exceeded, and whether the environment is controlled;
  • the first duration is the waiting duration for triggering the switch from sending the first type data packet to the second type data packet
  • M is an integer greater than or equal to 2
  • N is an integer greater than or equal to 1.
  • a computer-readable storage medium including computer instructions, which when run on a computer, cause the computer to execute the method of the first aspect described above.
  • a computer program product which includes computer instructions.
  • the computer program product runs on a computer, the computer runs the computer instructions to cause the computer to execute the method in the first aspect described above.
  • a chip is provided, which is coupled with a memory in a terminal device, so that the chip invokes program instructions stored in the memory during operation, so that the terminal device executes the method of the first aspect described above.
  • FIG. 1 is a schematic diagram of the architecture of a 5G user plane protocol stack provided by an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an EHC processing flow provided by an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the architecture of a wireless communication system provided by an embodiment of the present invention.
  • FIG. 4 is a first schematic diagram of a method for sending data packets according to an embodiment of the present invention.
  • FIG. 5 is a second schematic diagram of a method for sending data packets according to an embodiment of the present invention.
  • FIG. 6 is a third schematic diagram of a method for sending data packets according to an embodiment of the present invention.
  • FIG. 7 is a first structural diagram of a compression device provided by an embodiment of the present invention.
  • FIG. 8 is a second structural diagram of a compression device provided by an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a mobile phone according to an embodiment of the present invention.
  • words such as “exemplary” or “for example” are used to represent examples, illustrations, or illustrations. Any embodiment or design solution described as “exemplary” or “for example” in the embodiments of the present invention should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as “exemplary” or “for example” are used to present related concepts in a specific manner.
  • Header compression Compresses the header of a data packet to improve the transmission efficiency of user data.
  • New radio unlicensed (NR-U) spectrum header compression includes robust header compression (ROHC) and EHC.
  • Protocol data unit session type packet data unit senssion type, PDU session type
  • PDU session refers to the association between a terminal device and a network device that provides PDU connection services.
  • the type of this association may be Internet Protocol Version 4 (IPv4), Internet Protocol Version 6 (Internet Protocol Version 6, IPv6), or Ethernet (Ethernet), etc.
  • IPv4 Internet Protocol Version 4
  • IPv6 Internet Protocol Version 6
  • Ethernet Ethernet
  • Complete data package also called complete package: It can be an Ethernet data package, which contains complete Ethernet header information, and context and other information (context ID is currently confirmed, indicating whether it is a compressed data packet or a complete data packet) .
  • the context information is used for packet header compression and/or decompression.
  • Compressed data packet also known as compressed packet: it can be a kind of Ethernet data packet, which contains the compressed Ethernet packet header information and context and other information (the context ID is currently confirmed, indicating whether it is a compressed data packet or a complete data packet) .
  • the context information is used for packet header compression and/or decompression.
  • data packets are not limited to Ethernet data packets, and may also be other types of data packets.
  • the feedback packet (referred to as compressed feedback information in this embodiment) is a data packet sent by the decompression device to the compression device to indicate whether to compress the data packet.
  • the data packet is a data packet related to the context information, and is used to change the state of the data packet sent by the compression device or the decompression device.
  • TSN time sensitive network
  • TSC time sensitive communication
  • IP Internet Protocol
  • the introduction of the Ethernet frame issue is because the existing communication system only supports header compression for data packets whose PDU session is an IP data packet.
  • the type of PDU session can be not only an IP data packet type, but also an Ethernet data packet type.
  • FIG. 1 is a schematic diagram of the architecture of a 5G user plane protocol stack.
  • user equipment includes an application layer, a PDU layer and 5G access.
  • Network protocol layer (5G-AN protocol layers).
  • the 5G access network (5G-AN) is equipped with relay equipment, and the relay equipment includes 5G-AN protocol layers.
  • the protocol stack includes from top to bottom: user plane GPRS tunneling protocol-user (GPRS tunneling protocol-user, GTP- U), user datagram protocol (UDP)/IP, L2 and L1.
  • GPRS tunneling protocol-user GPRS tunneling protocol-user
  • GTP- U user datagram protocol
  • UDP user datagram protocol
  • L2 can be radio link control layer protocol (radio link control, RLC), media access control protocol (media access control, MAC) and packet data convergence protocol (Packet Data Convergence Protocol, PDCP), etc.
  • L1 can be the physical layer .
  • the User Port Function (UPF) in the core network can be used as a relay device or as a PDU session anchor (PDU session anchor). When used as a relay device, it includes the protocol stacks GTP-U, UDP/IP, L2, and L1 corresponding to the access network, and includes the protocol stacks of the core network corresponding to the protocol stacks of these access networks, including: Above 5G encapsulation (5G UP encapsulation) protocol, UDP/IP, L2 and L1.
  • 5G UP encapsulation 5G encapsulation
  • the PDU session anchor When used as a PDU session anchor, it includes protocol stacks including: 5G UP encapsulation protocol, UDP/IP, L2, and L1.
  • the data packet corresponding to the PDU session is IPv4 packet (IPv4packets); when the PDU session type is IPv4, the data packet corresponding to the PDU session is IPv6 data packets (IPv4packets)
  • IPv4v6 IPv6 data packets
  • the PDU session type is IPv4v6
  • the data packets corresponding to the PDU session are IPv6 data packets and IPv4 data packets;
  • the PDU session type is Ethernet, the data packets corresponding to the PDU session are corresponding to Ethernet Net frame.
  • a new header compression mechanism (a completely 3GPP internal mechanism) can be used to perform Ethernet header compression (EHC) processing on Ethernet data packets.
  • EHC Ethernet header compression
  • the EHC processing flow is as follows: For an Ethernet data packet, the EHC compression device establishes EHC context information (context), and associates a context identity document for each group of EHC context information. , CID). Then, the EHC compression device transmits a full header packet (also called an FH packet), which contains the CID and the original header information. The decompression end receives the FH packet, and establishes the context corresponding to the CID according to the information in the packet. After the decompression end establishes the context, it transmits EHC feedback (EHC feedback information) to the compression device to indicate that the compression device context is successfully established.
  • EHC feedback EHC feedback information
  • the compression device After receiving the EHC feedback, the compression device starts to send a compressed header (compressed header) data packet (also called a CH packet).
  • the CH packet contains header information and compressed header information that are not stored in the EHC context.
  • the decompression device When the decompression device receives the CH packet, the decompression device will restore the original header of the CH packet based on the CID and the stored original header information corresponding to the CID.
  • the decompression device can determine whether the received data packet is a CH packet or an FH packet according to the packet type indication information in the carried packet header. Wherein, the packet type indication information can occupy 1 bit.
  • Fig. 2 shows the form in which three sets of context identifiers (CIDx, CIDy, and CIDz, respectively) are associated with corresponding EHC context information.
  • the 3GPP RAN working group agreed to the establishment of a new radio (NR) unlicensed spectrum working method (the label of the project is: WID RP-182878).
  • the goal of the project is to make NR work in unlicensed spectrum , Including the following work scenarios:
  • Scenario A Carrier aggregation scenario, the primary cell (primary cell, PCell) works in the licensed frequency band, and the secondary cell (SCell) working on the unlicensed spectrum is aggregated through carrier aggregation;
  • PCell primary cell
  • SCell secondary cell
  • Scenario B dual-connection working scenario, PCell works in the licensed frequency band in the long-term evolution (long-term evolution, LTE) system, and the primary and secondary cell (PSCell) works in the NR unlicensed spectrum;
  • PCell works in the licensed frequency band in the long-term evolution (long-term evolution, LTE) system
  • PSCell primary and secondary cell
  • Scenario C Independent work scenario, NR works as an independent cell in an unlicensed spectrum
  • Scenario D NR single cell scenario, the uplink works in the licensed frequency band, and the downlink works in the unlicensed spectrum;
  • Scenario E Dual-connection working scenario, PCell is an NR licensed frequency band, and PScell is an NR unlicensed spectrum.
  • NR-U the working band of NR-U is 5GHz unlicensed spectrum and 6GHz unlicensed spectrum.
  • the design of NR-U should ensure fairness with other systems (such as WiFi) that are already working on these unlicensed spectrums.
  • the principle of fairness is that the impact of NR-U on systems that have been deployed on unlicensed spectrum cannot exceed the impact between these systems.
  • the general energy detection mechanism is the LBT mechanism, and the basic principle of the mechanism is that the base station or terminal (transmitting end) needs to listen for a period of time according to regulations before transmitting data on the unlicensed spectrum. If the result of the monitoring indicates that the carrier (or channel) is in an idle state, the sending end can transmit data to the receiving end through the carrier. If the detection result indicates that the carrier is in an occupied state, the transmitting end needs to wait for a period of time before continuing to listen to the carrier until the carrier detection result is in an idle state before transmitting data to the receiving end.
  • Mechanism 1 Direct transmission mechanism
  • This mechanism is used by the transmission side to quickly transmit after the switching gap within the COT of the channel occupation time, where the switching gap refers to the switching time when the transmission is received.
  • the switching gap refers to the switching time when the transmission is received.
  • its typical value does not exceed 16us.
  • Mechanism 2 LBT mechanism without random back-off
  • This mechanism means that the time for the user equipment to listen to the channel is determined, which is generally relatively short, such as 25 us.
  • Mechanism 3 LBT mechanism with random back-off
  • the contention window is fixed.
  • the transmission side randomly selects a random value in the contention window to determine the time to listen to the channel.
  • Mechanism 4 Random back-off LBT mechanism (the competition window is not fixed)
  • the transmission side randomly selects a random value in the contention window to determine the time to listen to the channel, and the contention window is variable.
  • the embodiment of the present invention provides a data packet sending method and compression device.
  • the first condition includes at least one of the following: continuously sending M first type data packets, sending N first type data packets, compressing the feedback path LBT result, not receiving compressed feedback information within the first preset time period, If the predetermined compressed feedback information is received within the second preset time period, the first time period is exceeded, and the environment is controlled, M is an integer greater than or equal to 2, and N is an integer greater than or equal to 1.
  • the compression device can trigger the switching transmission under the first condition
  • the state of the data packet is to switch from sending a complete data packet to sending a compressed data packet, or from sending a compressed data packet to sending a complete data packet, so as to increase the rate of sending data packets.
  • the interaction between the compression device and the decompression device is involved, where the compression device may be a terminal device, an access network device, or a core network device.
  • the access network device may be a base station
  • the core network device may be a session management function (Session Management Function, SMF) entity.
  • SMF Session Management Function
  • the terminal equipment may be referred to as user equipment (UE).
  • the terminal device can be a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, and a personal digital assistant (personal digital assistant). Digital assistant, PDA) and other devices.
  • the terminal device can also be a mobile phone, mobile station (MS), mobile terminal (mobile terminal), and notebook computer, etc.
  • the terminal device can be accessed via a wireless access network (radio access network, RAN) communicates with one or more core networks.
  • the terminal device may be a mobile phone (or called a "cellular" phone) or a computer with a mobile terminal.
  • the terminal device may also be a portable, pocket-sized, handheld, built-in computer or vehicle-mounted mobile device. Exchange voice and/or data with the wireless access network.
  • the terminal device may also be a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved network, etc.
  • the above-mentioned base station may be an LTE system, an NR communication system, or an evolved base station (evolutional node B, which may be referred to as eNB or e-NodeB) in an authorized auxiliary access long-term evolution (LAA-LTE) system.
  • eNB evolved base station
  • LAA-LTE authorized auxiliary access long-term evolution
  • Macro base station micro base station (also called “small base station"), pico base station, access point (AP), transmission point (TP) or new generation Node B (gNodeB), etc.
  • the method for sending data packets provided by the embodiment of the present invention may be applied to a wireless communication system.
  • FIG. 3 it is a schematic diagram of a system architecture of a wireless communication system provided by an embodiment of the present invention.
  • the wireless communication system includes a terminal device and a base station.
  • the terminal device in Figure 1 is used as a compression device and the base station is a decompression device.
  • the base station can generate a positive Confirm compressed feedback information, and perform LBT detection on the compressed feedback path that is unlicensed spectrum (that is, the path used to carry compressed feedback information).
  • the terminal device can switch from sending the complete data packet to sending the compressed data packet instead of sending the complete data packet all the time. Packets, which can improve the efficiency of sending data packets.
  • the connection between the aforementioned terminal device and the base station may be a wireless connection.
  • the terminal device is used as a compression device and the base station is a decompression device as an example to illustrate the method for sending data packets provided in the embodiment of the present invention.
  • the terminal device may send the first type data packet to the base station; in the case that the first condition is met, the terminal device sends the second type data packet to the base station.
  • the first condition includes at least one of the following: M first type data packets are sent continuously, N first type data packets are sent, the LBT result of the compressed feedback path is compressed, and the compressed feedback information is not received within the first preset time period , Receiving predetermined compressed feedback information within the second preset time period, exceeding the first time period, and whether the terminal device is in an uncontrolled environment.
  • the first duration is the waiting duration for triggering the switch from sending the first type data packet to the second type data packet
  • M is an integer greater than or equal to 2
  • N is an integer greater than or equal to 1.
  • the first type of data packet is a complete data packet
  • the second type of data packet is a compressed data packet
  • the first type of data packet is a compressed data packet
  • the second type of data packet is a complete data packet
  • Whether the terminal device is in a controlled environment refers to whether the time-frequency resource used by the terminal device is interfered by other cells or other communication systems when sending or receiving data.
  • other communication systems are communication systems other than the communication system where the terminal device is located, for example, a Wi-Fi system).
  • the compressed feedback path for the terminal device to receive compressed feedback information may be occupied by other cells or systems, causing LBT failure. At this time, the terminal device can be considered to be in an uncontrolled environment. ; In the time period when the network load is small, the compressed feedback path for the terminal equipment to receive compressed feedback information is usually in an idle state and will not be occupied by other cells or systems, so the terminal equipment can be considered to be in a controlled environment.
  • the terminal device can determine that the environment it is in is an uncontrolled environment/controlled environment, or change it to an uncontrolled environment/controlled environment according to the instructions of the base station, and the terminal device can also determine by itself that the environment it is in is non-controlled environment/controlled environment. Controlled environment/controlled environment.
  • the judgment condition may be instructed by the base station.
  • the foregoing compression feedback information not received within the first preset time period may include one of the following:
  • the compressed feedback information of positive confirmation is not received within the first preset time period, and the compressed feedback information of negative confirmation is not received within the first preset time period.
  • the first preset duration is the continuous duration of channel occupation of the compressed feedback path, or the first preset duration is the second duration.
  • the state transition timer expires, and the duration of the state transition timer is set to the first duration.
  • the aforementioned feedback information that a positive confirmation is not received within the preset time period means that the compressed feedback information is not received through the compressed feedback path within the preset time period.
  • the compressed feedback path is a path used to carry compressed feedback information.
  • the compressed feedback path may be one of the paths associated with the path through which the terminal device sends uplink data, or may be a dedicated path for sending compressed feedback information.
  • the compressed feedback path may be a carrier in an unlicensed spectrum.
  • the downlink carrier associated with the carrier currently sending uplink data is a carrier in the NR-U spectrum, or the path used to send compressed feedback information includes a carrier in the NR-U spectrum, or the terminal device is in an uncontrolled scenario .
  • the terminal device When the terminal device is in an uncontrolled scene, it means whether the time-frequency resource used by the terminal device is affected by other cells or other communication systems (communication systems other than the communication system where the terminal device is located, such as Wi-Fi). System).
  • the compression feedback information may include one of EHC feedback information, ROHC feedback information, and uplink data compression (UDC) feedback information.
  • EHC feedback information may include one of EHC feedback information, ROHC feedback information, and uplink data compression (UDC) feedback information.
  • ROHC feedback information may include one of EHC feedback information, ROHC feedback information, and uplink data compression (UDC) feedback information.
  • UDC uplink data compression
  • the first case of switching from sending a complete data packet to sending a compressed data packet is supported, and the first case of switching from sending a compressed data packet to sending a complete data packet is also supported.
  • an exemplary description will be given below for each of these two cases.
  • the first type of data packet is a complete data packet
  • the second type of data packet is a compressed data packet
  • FIG. 4 it is a method for sending a data packet provided by an embodiment of the present invention, and the method includes:
  • the base station sends compression configuration information to the terminal device.
  • the compression configuration information is used to indicate whether to compress the data packet.
  • the compression configuration information may also include compression parameters.
  • compressing the data packet may include compressing the header of the data packet, and may also include compressing other parts of the data packet except the header.
  • the data packet (including the complete data packet and the compressed data packet) in the embodiment of the present invention may be an Ethernet data packet or an IP data packet.
  • the compressed configuration information may be EHC configuration information, and the configuration information may indicate whether the uplink RoHC is configured, or whether the downlink RoHC is configured, and the corresponding configuration parameters, etc. .
  • the following 102 can be continued to initially send a complete data packet to the base station, so that the base station can establish context information.
  • the terminal device sends the complete data packet.
  • the compression configuration information received by the terminal indicates to compress the data packet, then the terminal device can establish context information and store it in association with the CID at this time.
  • the above-mentioned first condition is specifically a first target condition, and the first target condition includes at least one of the following:
  • M is an integer greater than or equal to 2.
  • the terminal device has continuously sent M complete data packets starting from sending the initial complete data packet.
  • N complete data packets There are two possible situations when N complete data packets are sent. One possible situation is: N complete data packets are sent continuously; the other possible situation is: N complete data packets are sent discontinuously in total .
  • N is an integer greater than or equal to 1.
  • N 1
  • the terminal device has initially sent the first data packet
  • the data packet is a complete data packet
  • the terminal device has sent a complete data packet, but the complete data packet
  • the packet is not the first data packet initially sent by the terminal device.
  • the initially sent data packet may refer to the first data packet sent by the terminal device according to an indication of the compression configuration information after receiving the compression configuration information.
  • the compression feedback path LBT fails.
  • the compression feedback path LBT fails through at least one of the following information:
  • the shared channel occupancy time may include at least two of the start time of the shared channel occupancy, the end time of the shared information occupancy, and the duration of the shared channel occupancy.
  • the LBT detection information of the compressed feedback path can be used to learn the LBT failure of the compressed feedback path.
  • the compressed feedback path can be shared information. In this case, it can be judged whether compressed feedback information or other information is received within the shared channel occupation time after the complete data packet is sent. If it is not received, then it can be considered as compressed feedback. The path LBT failed.
  • the LBT detection information of the compressed feedback path includes: channel occupation time of the compressed feedback path, or an LBT failure indication of the compressed feedback path.
  • the channel occupation time includes at least two of the following:
  • the start time of channel occupation The start time of channel occupation, the end time of channel occupation, and the duration of channel occupation.
  • the foregoing LBT detection information and LBT indication may be for the carrier or for a partial bandwidth (bandwidth part, BWP).
  • the compressed feedback information is not received within the first preset time period.
  • the compression feedback information includes one of Ethernet header compression EHC feedback information, robust header compression ROHC feedback information, or the aforementioned data compression UDC feedback information.
  • the first preset duration is the continuous duration of channel occupation of the compressed feedback path, or the first preset duration is the second duration.
  • the second duration is greater than the duration of channel occupation of the compressed feedback path, or the second duration is less than the duration of channel occupation of the compressed feedback path.
  • 4a may include at least one of the following:
  • the second duration may be greater than the duration of channel occupation, and the second duration may also be less than the duration of channel occupation.
  • the start time of the second duration may be the start time of the channel occupation duration.
  • the compressed feedback information of affirmative confirmation is received within the second preset time period.
  • the second preset duration is the duration of channel occupation of the compressed feedback path, or the second preset duration is the third duration.
  • the third duration is greater than the duration of channel occupation of the compressed feedback path, or the third duration is less than the duration of channel occupation of the compressed feedback path.
  • the start time of the third duration may be the start time of the channel occupation duration.
  • the third duration and the second duration may be the same or different.
  • the state transition timer expires, and the duration of the state transition timer is set to the first duration.
  • the target situation includes at least one of the following:
  • the compressed feedback path is the carrier in the unlicensed spectrum, the terminal equipment is in an uncontrolled environment and at the first moment.
  • the first moment includes at least one of the following moments:
  • P is an integer greater than or equal to 2
  • Q is an integer greater than or equal to 1.
  • the terminal equipment is in an uncontrolled environment.
  • the terminal device can switch from the uncompressed state to the compressed state after sending one or more complete data packets, that is, start sending compressed data packets.
  • the terminal device sends the compressed data packet.
  • the terminal device when the terminal device determines that the first target condition is satisfied, the terminal device can switch from the uncompressed state to the compressed state at this time, that is, start to send compressed data packets.
  • the base station after the base station receives the compressed data packet sent by the terminal device, it can determine the corresponding context information based on the CID in the compressed data packet and the association relationship between the CID and the context information pre-stored in the base station, and based on the context information Restore the compressed data packet to obtain complete data packet information.
  • the first condition when the first condition is met, switching from sending a complete data packet to sending a compressed data packet is realized.
  • the first condition includes at least one of the following: consecutively sending M first-class data packets, sending N first-class data packets, compressing the feedback path LBT result, and not receiving compressed feedback within the first preset time period Information, the predetermined compressed feedback information is received within the second preset time period, and the first time period is exceeded, M is an integer greater than or equal to 2, and N is an integer greater than or equal to 1.
  • the compression device can trigger the switching transmission under the first condition
  • the state of the data packet is to switch from sending a complete data packet to sending a compressed data packet, or from sending a compressed data packet to sending a complete data packet, so as to increase the rate of sending data packets.
  • the first type of data packet is a compressed data packet
  • the second type of data packet is a complete data packet
  • the terminal device determines that the second target condition and the second condition are satisfied.
  • the above 105a may also be replaced by the terminal device determining that the second target condition is satisfied and/or the second condition is satisfied.
  • the state switching can be performed when any one of the second target condition and the second condition is satisfied, that is, the terminal device sends a complete data packet.
  • the second target condition includes at least one of the following:
  • M is an integer greater than or equal to 2.
  • the terminal device has continuously sent M compressed data packets starting from sending the compressed data packet.
  • N compressed data packets are sent.
  • Sending N compressed data packets can include two possible situations. One possible situation is: N compressed data packets are sent continuously; the other possible situation is: N compressed data packets are sent discontinuously in total .
  • N is an integer greater than or equal to 1.
  • N 1
  • the terminal device has sent the first data packet
  • the data packet is a compressed data packet
  • the terminal device has sent a compressed data packet, but the compressed data packet It is not the first data packet initially sent by the terminal device.
  • the compression feedback path LBT is successful.
  • the LBT detection information of the compressed feedback path includes: the channel occupation time of the compressed feedback path, or the LBT success indication of the compressed feedback path.
  • the compressed feedback information is not received within the first preset time period.
  • the compressed feedback information of negative confirmation is received within the second preset time period.
  • the description of the first preset duration and the second preset duration can refer to the description in the first case above, and will not be repeated here.
  • Exceeding the first duration is the timeout of the state transition timer, and the duration of the state transition timer is set to the first duration.
  • the state transition timer is started at a second moment, and the second moment includes at least one of the following moments:
  • X is an integer greater than or equal to 2
  • Y is an integer greater than or equal to 1.
  • the second condition is that the transition from sending a complete data packet to sending a compressed data packet is triggered when the first condition is met.
  • the terminal equipment is in a controlled environment.
  • the terminal device when it is in a controlled environment, after sending one or more compressed data packets, it can be converted from the uncompressed state to the compressed state, that is, start to send the complete data packet.
  • the terminal device sends a complete data packet.
  • the above 105a and 106a may not be executed after the above 104. That is to say, the methods 105a and 106a can be applied to all current scenarios where compressed data packets are sent, and are not limited to the exemplary explanation in the embodiment of the present invention.
  • the first condition when the first condition is met, switching from sending a compressed data packet to sending a complete data packet is realized.
  • the first condition includes at least one of the following: consecutively sending M first-class data packets, sending N first-class data packets, compressing the feedback path LBT result, and not receiving compressed feedback within the first preset time period Information, the predetermined compressed feedback information is received within the second preset time period, and the first time period is exceeded, M is an integer greater than or equal to 2, and N is an integer greater than or equal to 1.
  • the compression device can trigger the switching transmission under the first condition
  • the state of the data packet is to switch from sending a complete data packet to sending a compressed data packet, or from sending a compressed data packet to sending a complete data packet, so as to increase the rate of sending data packets.
  • the method for sending a data packet provided by the embodiment of the present invention may further include 105b and 106b.
  • the terminal device determines that the second condition is met, and receives positively confirmed compressed feedback information within the second preset time period.
  • the terminal device sends the compressed data packet.
  • the base station after switching from sending a complete data packet to sending a compressed data packet based on the first target condition, if a positive confirmation of compressed feedback information is received within the second preset time period, the base station can continue Send compressed data packets.
  • the method for sending data packets provided by the embodiments of the present invention provides a mechanism for flexibly sending data packets, which can increase the rate of sending data packets.
  • an embodiment of the present invention provides a compression device, and the compression device includes:
  • the sending module 201 is configured to send a first type of data packet; if the first condition is met, send a second type of data packet;
  • the first condition includes at least one of the following: consecutively sending M first-class data packets, sending N first-class data packets, compressing the feedback path LBT result, and not receiving compressed feedback within the first preset time period Information, the predetermined compressed feedback information is received within the second preset time period, and the first time period is exceeded;
  • the first duration is the waiting duration for triggering the switch from sending the first type data packet to the second type data packet
  • M is an integer greater than or equal to 2
  • N is an integer greater than or equal to 1.
  • the first type of data packet is a complete data packet
  • the second type of data packet is a compressed data packet
  • the first type of data packet is a compressed data packet
  • the second type of data packet is a complete data packet
  • the compression feedback information not received within the first preset time period includes at least one of the following:
  • the compressed feedback information with a positive confirmation is not received within the first preset time period, and the compressed feedback information with a negative confirmation is not received within the first preset time period;
  • the first preset duration is the duration of channel occupation of the compressed feedback path, or the first preset duration is the second duration.
  • the state transition timer expires, and the duration of the state transition timer is set to the first duration.
  • the compression device when the first type of data packet is a complete data packet and the second type of data packet is a compressed data packet, the compression device further includes:
  • the processing module 202 is used to start the state transition timer in the target situation
  • the target situation includes at least one of the following:
  • the compressed feedback path is the carrier in the unlicensed spectrum, the terminal equipment is in an uncontrolled environment and at the first moment.
  • the first moment includes at least one of the following moments:
  • P is an integer greater than or equal to 2
  • Q is an integer greater than or equal to 1.
  • the processor is further configured to learn that the compression feedback path LBT fails through at least one of the following information:
  • the LBT detection information of the compressed feedback path includes at least one of the following:
  • receiving the predetermined compression feedback information within the second preset time period includes:
  • Affirmatively confirmed compressed feedback information is received within the second preset time period
  • the second preset duration is the duration of channel occupation of the compressed feedback path, or the second preset duration is the third duration.
  • the compressed feedback path LBT result is that the compressed feedback path LBT fails.
  • the compression device also includes:
  • the receiving module 203 is configured to receive compression configuration information before the sending module 201 sends the first type of data packet, where the compression configuration information is used to indicate whether to compress the data packet;
  • the sending module 201 is specifically configured to send a complete data packet if the compression configuration information is used to instruct to compress the data packet.
  • the state transition timer is started at the second moment, and the second moment includes at least one of the following moments:
  • X is an integer greater than or equal to 2
  • Y is an integer greater than or equal to 1.
  • it also includes:
  • the processing module 202 is configured to learn that the compression feedback path LBT is successful through at least one of the following information:
  • the LBT detection information of the compressed feedback path includes: the channel occupation time of the compressed feedback path, or the LBT success indication of the compressed feedback path.
  • receiving predetermined compression feedback information within the second preset time period includes:
  • the compressed feedback message of negative confirmation is received within the second preset time period
  • the second preset duration is the duration of channel occupation of the compressed feedback path, or the second preset duration is the third duration.
  • the compressed feedback path LBT result is that the compressed feedback path LBT succeeds.
  • the sending module 201 is specifically configured to send the complete data packet when the first condition and the second condition are met ;
  • the second condition is that the transition from sending a complete data packet to sending a compressed data packet is triggered when the first condition is met.
  • the channel occupation time includes at least two of the following:
  • the start time of channel occupation The start time of channel occupation, the end time of channel occupation, and the duration of channel occupation.
  • the compression feedback information includes one of Ethernet header compression EHC feedback information, robust header compression ROHC feedback information, or uplink data compression UDC feedback information.
  • an embodiment of the present invention provides a compression device, and the compression device includes:
  • a memory 301 storing executable program codes
  • a processor 302 coupled with the memory 301;
  • the processor 302 calls the executable program code stored in the memory 301 to execute the method for sending a data packet in the embodiment of the present invention.
  • the compression device in the embodiment of the present invention may be a mobile phone.
  • the mobile phone may include: a radio frequency (RF) circuit 1110, a memory 1120, an input unit 1130, a display unit 1140, a sensor 1150, an audio circuit 1160, a wireless fidelity (WiFi) module 1170, The processor 1180, and the power supply 1190 and other components.
  • the radio frequency circuit 1110 includes a receiver 1111 and a transmitter 1112.
  • the RF circuit 1110 can be used for receiving and sending signals during the process of sending and receiving information or talking. In particular, after receiving the downlink information of the base station, it is processed by the processor 1180; in addition, the designed uplink data is sent to the base station.
  • the RF circuit 1110 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, and the like.
  • the RF circuit 1110 can also communicate with the network and other devices through wireless communication.
  • the above-mentioned wireless communication can use any communication standard or protocol, including but not limited to global system of mobile communication (GSM), general packet radio service (GPRS), code division multiple access (code division multiple access, GSM) multiple access (CDMA), wideband code division multiple access (WCDMA), long term evolution (LTE), email, short messaging service (SMS), etc.
  • GSM global system of mobile communication
  • GPRS general packet radio service
  • code division multiple access code division multiple access
  • GSM code division multiple access
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • LTE long term evolution
  • email short messaging service
  • SMS short messaging service
  • the memory 1120 may be used to store software programs and modules.
  • the processor 1180 executes various functional applications and data processing of the mobile phone by running the software programs and modules stored in the memory 1120.
  • the memory 1120 may mainly include a program storage area and a data storage area.
  • the program storage area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of mobile phones (such as audio data, phone book, etc.), etc.
  • the memory 1120 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the input unit 1130 may be used to receive inputted digital or character information, and generate key signal input related to user settings and function control of the mobile phone.
  • the input unit 1130 may include a touch panel 1131 and other input devices 1132.
  • the touch panel 1131 also called a touch screen, can collect user touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 1131 or near the touch panel 1131. Operation), and drive the corresponding connection device according to the preset program.
  • the touch panel 1131 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 1180, and can receive and execute the commands sent by the processor 1180.
  • the touch panel 1131 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave.
  • the input unit 1130 may also include other input devices 1132.
  • other input devices 1132 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick.
  • the display unit 1140 may be used to display information input by the user or information provided to the user and various menus of the mobile phone.
  • the display unit 1140 may include a display panel 1141.
  • the display panel 1141 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.
  • the touch panel 1131 can cover the display panel 1141. When the touch panel 1131 detects a touch operation on or near it, it transmits it to the processor 1180 to determine the type of touch event, and then the processor 1180 responds to the touch event. The type provides corresponding visual output on the display panel 1141.
  • the touch panel 1131 and the display panel 1141 are used as two independent components to realize the input and input functions of the mobile phone, but in some embodiments, the touch panel 1131 and the display panel 1141 can be integrated. Realize the input and output functions of the mobile phone.
  • the mobile phone may also include at least one sensor 1150, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor.
  • the ambient light sensor can adjust the brightness of the display panel 1141 according to the brightness of the ambient light.
  • the proximity sensor can close the display panel 1141 and/or when the mobile phone is moved to the ear. Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three axes).
  • It can detect the magnitude and direction of gravity when it is stationary, and can be used to identify mobile phone posture applications (such as horizontal and vertical screen switching, related Games, magnetometer posture calibration), vibration recognition-related functions (such as pedometer, percussion), etc.; as for other sensors such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which can be configured in mobile phones, I won’t be here anymore. Go into details.
  • mobile phone posture applications such as horizontal and vertical screen switching, related Games, magnetometer posture calibration
  • vibration recognition-related functions such as pedometer, percussion
  • sensors such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc.
  • the audio circuit 1160, the speaker 1161, and the microphone 1162 can provide an audio interface between the user and the mobile phone.
  • the audio circuit 1160 can transmit the electrical signal converted from the received audio data to the speaker 1161, which is converted into a sound signal by the speaker 1161 for output; on the other hand, the microphone 1162 converts the collected sound signal into an electrical signal, and the audio circuit 1160 After being received, it is converted into audio data, and then processed by the audio data output processor 1180, and sent to, for example, another mobile phone via the RF circuit 1110, or the audio data is output to the memory 1120 for further processing.
  • WiFi is a short-distance wireless transmission technology.
  • the mobile phone can help users send and receive emails, browse web pages, and access streaming media through the WiFi module 1170. It provides users with wireless broadband Internet access.
  • FIG. 15 shows the WiFi module 1170, it is understandable that it is not a necessary component of the mobile phone, and can be omitted as needed without changing the essence of the invention.
  • the processor 1180 is the control center of the mobile phone. It uses various interfaces and lines to connect various parts of the entire mobile phone. Various functions and processing data of the mobile phone can be used to monitor the mobile phone as a whole.
  • the processor 1180 may include one or more processing units; preferably, the processor 1180 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, application programs, etc. , The modem processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 1180.
  • the mobile phone also includes a power source 1190 (such as a battery) for supplying power to various components.
  • a power source 1190 such as a battery
  • the power source can be logically connected to the processor 1180 through a power management system, so that functions such as charging, discharging, and power management are realized through the power management system.
  • the mobile phone may also include a camera, a Bluetooth module, etc., which will not be repeated here.
  • the RF circuit 1110 is used to send a first type of data packet; when the first condition is met, the second type of data packet is sent;
  • the first condition includes at least one of the following: continuously sending M first type data packets, sending N first type data packets, compressing the feedback path LBT result, and not receiving compressed feedback within the first preset time period Information, the predetermined compressed feedback information received within the second preset time period, the first time period is exceeded, and whether the environment is controlled;
  • the first duration is the waiting duration for triggering the switch from sending the first type data packet to the second type data packet
  • M is an integer greater than or equal to 2
  • N is an integer greater than or equal to 1.
  • the first type of data packet is a complete data packet
  • the second type of data packet is a compressed data packet
  • the first type of data packet is a compressed data packet
  • the second type of data packet is a complete data packet
  • the compression feedback information not received within the first preset time period includes at least one of the following:
  • the compressed feedback information with a positive confirmation is not received within the first preset time period, and the compressed feedback information with a negative confirmation is not received within the first preset time period;
  • the first preset duration is the duration of channel occupation of the compressed feedback path, or the first preset duration is the second duration.
  • the state transition timer expires, and the duration of the state transition timer is set to the first duration.
  • the processor 1180 is configured to start the state transition timer in the target situation;
  • the target situation includes at least one of the following:
  • the compressed feedback path is the carrier in the unlicensed spectrum, the terminal equipment is in an uncontrolled environment and is in the first moment;
  • the first moment includes at least one of the following moments:
  • P is an integer greater than or equal to 2
  • Q is an integer greater than or equal to 1.
  • the processor 1180 is further configured to learn that the compression feedback path LBT fails through at least one of the following information:
  • the LBT detection information of the compressed feedback path includes at least one of the following:
  • receiving predetermined compression feedback information within the second preset time period includes:
  • Affirmatively confirmed compressed feedback information is received within the second preset time period
  • the second preset duration is the duration of channel occupation of the compressed feedback path, or the second preset duration is the third duration.
  • the compressed feedback path LBT result is that the compressed feedback path LBT fails.
  • it also includes:
  • the RF circuit 1110 is configured to receive compression configuration information before the transmitter sends the first type of data packet, where the compression configuration information is used to indicate whether to compress the data packet;
  • the RF circuit 1110 is specifically configured to send a complete data packet if the compression configuration information is used to indicate to compress the data packet.
  • the state transition timer is started at the second moment, and the second moment includes at least one of the following moments:
  • X is an integer greater than or equal to 2
  • Y is an integer greater than or equal to 1.
  • the processor 1180 is configured to learn that the compressed feedback path LBT is successful through at least one of the following information:
  • the LBT detection information of the compressed feedback path includes at least one of the following:
  • receiving predetermined compression feedback information within the second preset time period includes:
  • the compressed feedback message of negative confirmation is received within the second preset time period
  • the second preset duration is the duration of channel occupation of the compressed feedback path, or the second preset duration is the third duration.
  • the compressed feedback path LBT result is that the compressed feedback path LBT succeeds.
  • the transmitter is specifically configured to send the complete data packet when the first condition and the second condition are met;
  • the second condition is that the transition from sending a complete data packet to sending a compressed data packet is triggered when the first condition is met.
  • the channel occupation time includes at least two of the following:
  • the start time of channel occupation The start time of channel occupation, the end time of channel occupation, and the duration of channel occupation.
  • the compression feedback information includes one of Ethernet header compression EHC feedback information, robust header compression ROHC feedback information, or uplink data compression UDC feedback information.
  • the compression device can implement all the processes in the method embodiment and can achieve the same technical effect.
  • the description of the technical effect of the compression device refer to the description of the technical effect in the method embodiment. Go into details again.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present invention are generated in whole or in part.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • Computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • computer instructions may be transmitted from a website, computer, server, or data center through a cable (such as Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to transmit to another website site, computer, server or data center.
  • the computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Les modes de réalisation de la présente invention sont appliqués au domaine technique des communications, et un procédé de transmission de paquets de données, et un dispositif de compression sont divulgués. Le procédé peut améliorer le débit de transmission de paquets de données. Un mode de réalisation de la présente invention comprend : la transmission de paquets de données de type 1; et la transmission de paquets de données de type 2 lorsqu'une première condition est satisfaite, la première condition comprenant au moins l'une des opérations suivantes : M paquets de données de type 1 sont transmis en continu; la transmission de N paquets de données de type 1; la compression d'un résultat LBT de trajet de rétroaction; la non réception d'informations de rétroaction de compression dans une première durée prédéfinie; la réception d'informations de rétroaction de compression prédéterminées dans une seconde durée prédéfinie; le dépassement d'une première durée; et si l'environnement est sous contrôle. La première durée est une durée d'attente pour déclencher un transfert intercellulaire à partir de la transmission des paquets de données de type 1 jusqu'à la transmission des paquets de données de type 2; M est un nombre entier supérieur ou égal à 2; et N est un nombre entier supérieur ou égal à 1.
PCT/CN2020/090546 2020-05-15 2020-05-15 Procédé de transmission de paquets de données et dispositif de compression WO2021227026A1 (fr)

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CN202080095077.5A CN115039438A (zh) 2020-05-15 2020-05-15 一种发送数据包的方法及压缩设备

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