CN115380593A

CN115380593A - Wireless communication method, compression end and decompression end

Info

Publication number: CN115380593A
Application number: CN202080099656.7A
Authority: CN
Inventors: 付喆; 卢前溪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2022-11-22
Also published as: WO2021253432A1

Abstract

A wireless communication method, a compression end and a decompression end are provided, the method comprises: acquiring first information, wherein the first information is used for determining a frame header compression (EHC) mechanism of an Ethernet frame; and compressing the frame header of the Ethernet frame and/or sending the Ethernet frame based on the EHC mechanism. Based on the above technical solution, the EHC mechanism of the ethernet frame is determined by the first information, so that the compression end can use different EHC mechanisms based on different first information, and in other words, the compression end can use different EHC mechanisms in different scenes, and accordingly, the data transmission efficiency can be improved, the data transmission delay can be reduced, and the user experience can be improved.

Description

Wireless communication method, compression end and decompression end

Technical Field

The embodiments of the present application relate to the field of communications, and more particularly, to a wireless communication method, a compression end and a decompression end.

Background

In a Long Term Evolution (LTE) system, a Protocol Data Unit (PDU) session is of an Internet Protocol (IP) type.

In a New Radio (NR) system, not only an IP packet type is supported, but also an Ethernet (Ethernet) frame type is introduced.

In this case, how to implement the compression of the ethernet header is an urgent problem to be solved.

Disclosure of Invention

The wireless communication method, the compression end and the decompression end are provided, so that the compression end can use different EHC mechanisms in different scenes, and accordingly, the data transmission efficiency can be improved, the data transmission delay can be reduced, and the user experience can be improved.

In a first aspect, a wireless communication method is provided, including:

acquiring first information, wherein the first information is used for determining a frame header compression EHC mechanism of an Ethernet frame;

and compressing the frame header of the Ethernet frame and/or sending the Ethernet frame based on the EHC mechanism.

In a second aspect, a wireless communication method is provided, including:

decompressing a header of the Ethernet frame and/or receiving the Ethernet frame based on the EHC mechanism.

In a third aspect, a compression end is provided for performing the method of the first aspect or its implementations. In particular, the compression end comprises functional modules for performing the method of the first aspect or its implementations.

In a fourth aspect, a decompression end is provided for performing the method of the second aspect or its implementations. In particular, the decompression end comprises functional modules for executing the method of the second aspect or its implementations.

In a fifth aspect, a compression device is provided that includes a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory to perform the method in the first aspect or each implementation manner thereof.

In a sixth aspect, a decompression end is provided, comprising a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method of the second aspect or each implementation manner thereof.

In a seventh aspect, a chip is provided, which is configured to implement the method in any one of the first aspect to the second aspect or each implementation manner thereof. Specifically, the chip includes: a processor configured to call and run a computer program from a memory, so that a device on which the chip is installed performs the method in any one of the first aspect to the second aspect or the implementation manner thereof.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a ninth aspect, there is provided a computer program product comprising computer program instructions to cause a computer to perform the method of any one of the first to second aspects or implementations thereof.

A tenth aspect provides a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.

Based on the above technical solution, the EHC mechanism of the ethernet frame is determined by the first information, so that the compression end can use different EHC mechanisms based on different first information, and in other words, the compression end can use different EHC mechanisms in different scenes, and accordingly, the data transmission efficiency can be improved, the data transmission delay can be reduced, and the user experience can be improved.

Drawings

Fig. 1 and fig. 2 are examples of a system framework provided in an embodiment of the present application.

Fig. 3 is a schematic diagram of a user plane protocol stack of a PDU session according to an embodiment of the present application.

Fig. 4 is a schematic flowchart of a method for compressing an ethernet frame header according to an embodiment of the present application.

Fig. 5 to fig. 7 are schematic block diagrams of frame formats of ethernet frames provided in an embodiment of the present application.

Fig. 8 is a schematic block diagram of a compression principle of an ethernet frame header according to an embodiment of the present application.

Fig. 9 is a schematic flow chart of a method for switching an ethernet frame pillow compression mechanism according to an embodiment of the present application.

Fig. 10 is a schematic flowchart of a method for decompressing a header of an ethernet frame according to an embodiment of the present application.

Fig. 11 is a schematic block diagram of a compression end provided by an embodiment of the present application.

Fig. 12 is a schematic block diagram of a decompression end provided in an embodiment of the present application.

Fig. 13 is a schematic block diagram of a communication device provided in an embodiment of the present application.

Fig. 14 is a schematic block diagram of a chip provided in an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic block diagram of a wireless communication system architecture 100 provided in accordance with the present application.

As shown in fig. 1, the system architecture 100 includes a terminal device 110, an access network device 120, a core network device 130, and a Data Network (DN) 160. The core network device 130 includes a management device 140 and a gateway device 150.

In some embodiments of the present application, optionally, the terminal device 110 may be configured to connect to the access network device 120 deployed by the operator through a wireless air interface, and then connect to the data network 160 through the core network device 130. The terminal device 110 may also be referred to as a User Equipment (UE).

For example, the terminal devices 110 include, but are not limited to: a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a smart phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a computer, a laptop computer, a handheld communication device, a handheld computing device, a satellite radio, a wireless modem card, a Set Top Box (STB), a Customer Premises Equipment (CPE), and/or other devices for communicating over a wireless system.

In some embodiments of the present application, optionally, the access network device 120 may also be referred to as AN Access Network (AN)/Radio Access Network (RAN) device. The access network device 120 is mainly used for implementing functions such as a wireless physical layer function, resource scheduling and wireless resource management, wireless access control, and mobility management. The access network device 120 may also be referred to as a 5G-AN/5G-RAN node.

For example, the access network device 120 includes but is not limited to: access node (AP), next generation base station (NR NodeB, gNB), central Unit (CU), and Distributed Unit (DU) in separate forms, such as gNB, transmission Receive Point (TRP), transmission Point (TP), or some other access node.

In some embodiments of the present application, optionally, the core network device 130 is mainly used for implementing functions of call connection, charging, mobility management, and implementation of supplementary service.

For example, the core network device 130 may include a management device 140 and a gateway device 150. The access network device 120 may be in communication with the management device 140 and the gateway device 150, respectively, and the gateway device 150 may be in communication with the data network 160. The management device 140 is mainly used for device registration, security authentication, mobility management, location management, and the like of the terminal device, and the gateway device 150 is mainly used for establishing a channel with the terminal device, and forwarding a data packet between the terminal device and an external data network on the channel.

In some embodiments of the present application, the data network 160 may optionally correspond to a plurality of different service domains, such as an IP Multimedia Subsystem (IMS), the Internet, an Internet Protocol Television (IPTV), other operator service domains, and the like, and is mainly used for providing a plurality of data service services for the terminal device.

For example, the data network 160 may include network devices such as servers (including servers providing multicast services), routers, gateways, and so on.

It should be noted that fig. 1 is only an exemplary architecture diagram and should not be construed as limiting itself.

For example, the network architecture 100 may comprise further functional units or functional entities in addition to the functional units shown in fig. 1.

Fig. 2 is an example of the system architecture shown in fig. 1.

As shown in fig. 2, the management device 140 may include functional units such as an access & mobility function (AMF), a Session Management Function (SMF), and a Policy Control Function (PCF). The gateway device 150 may include functional units such as a User Plane Function (UPF), which may work independently or may be combined together to implement some control functions.

In other words, the AMF, the SMF and the PCF may be combined together as a management device to perform access control and mobility management functions such as access authentication, security encryption, location registration, etc. of the terminal device, session management functions such as establishment, release and change of a user plane transmission path, and functions of analyzing data (such as congestion) related to some slices (slices) and data related to the terminal device. The UPF, as a gateway device, mainly performs functions such as routing and forwarding of user plane data, for example, is responsible for filtering data packets, transmitting/forwarding data, controlling rate, generating charging information, and the like of a terminal device.

As shown in fig. 2, the terminal device 110 may establish a control plane signaling connection with the AMF through the NG interface 1 (NG 1, N1); access network device 120 may establish a control plane signaling connection with the AMF over NG interface 2 (NG 2, N2); access network device 120 may establish a user plane data connection with the UPF over NG interface 3 (NG 3, N3); the UPF can establish a control plane signaling connection with the SMF through an NG interface 4 (NG 4, N4); the UPF may interact user plane data with the data network via the NG interface 6 (NG 6, N6).

Of course, fig. 2 is only an example of the present application and should not be construed as limiting the present application.

For example, the terminal device 110 may establish an air interface connection with the access network device 120 through the NR interface, so as to transmit user plane data and control plane signaling; the AMF can establish a control plane signaling connection with the SMF through an NG interface 11 (NG 11, N11); the SMF may establish a control plane signaling connection with the PCF via NG interface 7 (NG 7, N7).

It should be noted that the network architecture 100 of the embodiment of the present application may support a PDU connection service, which refers to a service for exchanging PDU packets between the UE and the DN.

For example, the terminal device 110 and the data network 160 exchange PDU packet traffic. The terminal equipment realizes the PDU session connection by initiating the establishment of the PDU session. After a single PDU session is established, a data transmission channel between the terminal device 110 and the data network 160 is established. In other words, a PDU session refers to the process of communication between the terminal device 110 and the data network 160.

In addition, the terminal device 110 may establish a plurality of PDU session connections, and the SMFs corresponding to each PDU session may be different or the same. For example, the terminal devices 110 may be connected to the same data network through different UPFs. In other words, a PDU session may have multiple N6 interfaces at the same time. The UPF connecting each N6 interface is called a PDU session anchor, each providing a different path to the same data network. Terminal device 110 may establish a plurality of PDU sessions, each of which may include a plurality of Data Radio Bearers (DRBs) on the RAN side.

In some embodiments of the present application, optionally, the PDU packet may include at least one of a number, an International Mobile Subscriber Identity (IMSI), an International Mobile Equipment Identity (MEI), a PDU Session Identifier (ID), a Session type (IPv 4, IPv6, IPv4v6, and ethernet), an uplink and downlink rate, a charging ID, roaming state information, IP information of the terminal device, policy Control Function (Policy Control Function, PCF) information, quality of service (Quality of service, qoS) information, tunnel information, a destination address, a Session Management Function (Session Management Function, SMF) identifier, slice information (if supported), default Data Radio Bearer (DRB) offline information, a Data network name, an Access Management Function (Access Management Function, function) identifier, online charging location information, PCF information, and other related information.

It should be noted that the system architecture 100 described in fig. 1 and 2 can be applied to the fifth Generation (5-Generation, 5G) Industrial internet (IIoT).

In other words, the system architecture 100 needs to support the transmission of industrial automation (factory automation), transmission automation (transport automation), intelligent power distribution (electrical power distribution), and other services.

Based on the transmission requirements of time delay and reliability, IIoT introduces the concept of a Time Sensitive Network (TSN) network or a Time Stamp Counter (TSC), and needs to perform header compression processing on TSN traffic. TSC traffic may be carried by Ethernet frames or by IP packets.

In other words, in a 5G New Radio (NR) system, the PDU session may be not only an IP packet type but also an Ethernet frame (Ethernet frame) type.

For a PDU layer (PDU layer), when the PDU Session type is Internet Protocol version 4 (Internet Protocol version 4, IPv4), internet Protocol version 6 (Internet Protocol version 6, IPv6) or IPv4v6, at this time, the data packet corresponding to the PDU Session is an IPv4 data packet (packets) and/or an IPv6 data packet; when the type of the PDU Session is Ethernet, the data packet corresponding to the PDU Session is an Ethernet frame (Ethernet frames).

As shown in fig. 3, the user plane protocol stack of the PDU session on the terminal device side may include: AN application layer, a PDU layer, and a 5G access network protocol layer (5G-AN protocols). The user plane protocol stack of the PDU session on the access network side may include: relay (relay) Protocol, 5G access network Protocol layer (5G-AN protocols), general Packet Radio Service tunneling Protocol for User plane, GTP-U, user Datagram Protocol (UDP)/Internet Protocol (IP), layer 2 (layer 2, L2), and layer 1 (layer 1, L1). Layer 2 is to transmit the application data of the upper layer by using the link of layer 1. The user plane protocol stack of the PDU session on the UPF side may include: relay protocol, GTP-U, UDP/IP, L2, L1, and 5G Encapsulation (UP Encapsulation) protocols. The user plane protocol stack of the PDU session on the UPF anchor side may include: PDU layer, 5G uplink Encapsulation (UP Encapsulation) protocol, UDP/IP, L2 and L1.

The terminal equipment side can establish an air interface connection with the access network side through an NR interface and is used for transmitting user plane data and control plane signaling; each layer of the access network side can establish user plane data connection with the corresponding layer of the UPF through NG interfaces 3 (NG 3, N3); each layer of the UPF can establish a connection user plane data connection with the corresponding layer of the UPF as the PDU conversation anchor point through NG interfaces 9 (NG 9, N9); therefore, the connection between the PDU layer of the terminal equipment side and the PDU layer of the UPF serving as the PDU session anchor point can be established, and the UPF serving as the PDU session anchor point can interact user plane data between the terminal equipment and the network equipment after the connection with the data network is established through the NG interface 6 (NG 6, N6).

In some embodiments of the present application, the access network protocol layer may optionally depend on the specific access network type.

Illustratively, the access network types may include a third Generation Partnership project (3 GPP) access type and a Non-3GPP (Non-3 GPP, N3 GPP) access type. The 3GPP access type may include a Long Term Evolution (LTE) access type and a New Radio (NR) access type. The non-3GPP access type may include a Wireless Local Area Network (WLAN) access type.

As an example, a single Protocol Data Unit (PDU) Session (Session) may use multiple access technologies to transmit Data. Such a PDU Session established using multiple Access types may be referred to as a Multi-Access PDU (MA PDU) Session. Through Multi-Access PDU Session, the terminal equipment can obtain higher transmission rate and save more expenses; the network can more efficiently utilize the wireless resources of the N3GPP, and the transmission rate and the spectrum utilization rate are improved.

In other words, a single PDU Session may use multiple access types to transmit data. Or, a single PDU Session may transmit data on access channels corresponding to multiple access types.

In some embodiments of the present application, optionally, a GTP-U tunnel may be established between the GTP-U receiving entity and the GTP-U sending entity; the GTP-U tunnel is used for forwarding data packets between GTP-U entities. The GTP-U Tunnel may be identified by a Tunnel Endpoint identifier (Tunnel Endpoint ID), an IP address, and a UDP port number. The TEID is used to unambiguously identify the tunnel endpoint of a given UDP/IP endpoint in the GTP-U receiving entity.

In some embodiments of the present application, UDP/IP may optionally be the underlying protocol designated to transport GTP messages.

In some embodiments of the present application, layer 2 is optionally used to provide for correct transmission and reception of signaling messages, including partial duplicate detection.

For example, L2 may include Media Access Control (MAC), radio Link Control (RLC), packet Data Convergence Protocol (PDCP), and Service Data Adaptation Protocol (SDAP). Wherein, the MAC provides a logical channel for the RLC; the RLC provides an RLC channel for the PDCP; PDCP provides wireless load bearing for SDAP; the SDAP provides QoS flows for the 5GC, and the SDAP is used for the RAN to map different wireless data bearing strategies according to different Quality of service (QoS).

In some embodiments of the present application, layer 1 is optionally used to provide transmission and reception wireless links between the base station and the terminal device. For example, layer 1 may include a Physical Layer (MAC) that provides transport channels for the MAC.

Fig. 4 is a schematic block diagram of a method 200 for compressing an ethernet frame header according to an embodiment of the present application. The execution subject of the method 200 may be a compression end or a compression device. It should be noted that the method 200 may be used for downlink transmission, may be used for uplink transmission, or may be used for sidelink transmission. When used for downlink transmission, the compression end may be an access network device/core network device, and the decompression end may be a terminal device. When the method is used for the sidestream transmission, the compression end may be a terminal device, and the decompression end may be an access network device/a core network device.

As shown in fig. 4, the method 200 may include:

s210, the compression end obtains first information, where the first information is used to determine an Ethernet Header Compression (EHC) mechanism of an Ethernet frame.

S220, the compression end compresses the frame header of the Ethernet frame and/or transmits the Ethernet frame based on the EHC mechanism.

For example, the compressing end determines the EHC mechanism based on the acquired first information, and compresses a header of the ethernet frame and/or transmits the ethernet frame based on the EHC mechanism. For example, the compression end may determine to compress a header of the ethernet frame based on the EHC mechanism and send a compressed packet to the decompression end. For another example, the compressing end determines not to compress the frame header of the ethernet frame based on the EHC mechanism, that is, sends the ethernet frame to the decompressing end, which is equivalent to that the compressing end sends a complete packet to the decompressing end.

In other words, the compression end may determine the packet type of the data packet to be sent by the compression end based on the EHC mechanism. I.e. whether the data packet to be sent is a complete packet or a compressed packet. Alternatively, the compression end may determine a state transition manner based on the EHC mechanism.

The EHC mechanism of the ethernet frame is determined by the first information, so that the compression end can use different EHC mechanisms based on different first information, and equivalently, the compression end can use different EHC mechanisms in different scenes, and accordingly, data transmission efficiency, data transmission delay and user experience can be improved.

Illustratively, the compression mechanism of the ethernet frame may include a plurality of compression mechanisms, and the compression end and/or the decompression end may select one of the plurality of compression mechanisms through the first information, and perform a state transition or determine which type of packet (compressed packet or complete packet) to transmit based on the one compression mechanism.

In some embodiments of the present application, the method 200 may further comprise:

configuration information of the EHC is obtained.

Illustratively, the configuration information may include information for configuring functional parameters of the EHC mechanism.

For example, the compression end may obtain the functional parameters of each of the plurality of compression mechanisms through the configuration information. The configuration information may be information of network semi-static configuration, or information of network dynamic configuration, or predefined information, or information predetermined by the compression end and the decompression end. For example, the compression end may determine, according to the obtained configuration information, a compression manner of the ethernet frame header, that is, in which manner to perform state transition, or how to perform header compression (header compression), for example, which domains in the ethernet frame header are compressed, a context identifier used in compression, and the like. Of course, the configuration information may also be used to configure compression parameters of the data portion of the ethernet frame, such as whether to compress the data portion, and a compression manner of the data portion. In other words, the compression end may also compress the data portion of the data packet according to the compression parameter of the data portion, and send the compressed ethernet frame to the decompression end.

It should be understood that the configuration information may be information configured by the first device to the compressing end and/or the decompressing end, so that the compressing end may compress the frame header of the ethernet frame based on the configuration information, and the decompressing end decompresses the compressed ethernet frame sent by the compressing end according to the configuration information. Optionally, the first device may be an access Network device, a core Network device, or an application layer device, such as a Data Network Node (DNN).

The following describes an example in which the first device sends the configuration information to the compression end.

For example, the first device may be an access network device, and the compression end may be a terminal device. In this case, the first device may configure the header compression parameter to the compression end through a Radio Resource Control (RRC) message, or the first device may also send the configuration Information to the compression end through other messages, for example, a Downlink message such as a Media Access Control (MAC) Control Element (CE) or Downlink Control Information (DCI).

For another example, the first device may be a core network device, and the compression end may be a terminal device. In this case, the core network device may pass a message between the terminal device and the core network. For example, the core network device may send the configuration information to the terminal device through a Non-Access Stratum (NAS) message. For another example, the core network device may notify the configuration information to an Access network device through a Non-Access Stratum (NAS) message, and then the Access network device may forward the configuration information to the terminal device through an Access Stratum (AS) layer message.

For another example, the first device may be a core network device, and the compression end may be an access network device. In this case, the core network device may send the configuration information to the access network device through a message, for example, an N2 message, between the access network device and the core network.

It should be noted that an implementation manner of sending the configuration information to the decompression end by the first device is similar to an implementation manner of sending the configuration information to the compression end by the first device, and details are not repeated here to avoid repetition.

The following describes exemplary formats of ethernet frames usable in embodiments of the present application with reference to the drawings.

Fig. 5 to fig. 7 are examples of frame formats of ethernet frames provided in an embodiment of the present application.

As shown in fig. 5, the ethernet frame may be an ethernet 802.3 raw (raw) frame type, which may include a header and a data portion of the ethernet frame. The header may also be referred to as an ethernet frame header. The header may include a plurality of fields (or fields, subheaders), such as a destination address field, a source address field, and a type/length field. The data portion may include data and/or padding bits. The ethernet frame may additionally include two parts, a preamble and a Frame Check Sequence (FCS), that are not transmitted in the 5G network.

As shown in fig. 6, the Ethernet frame may be of an Ethernet II frame type, and the Ethernet frame may include a header portion and a data portion. The header may include a plurality of fields, such as a destination address field, a source address field, and a type field. The data portion may include data. It may additionally include two parts, i.e. preamble and FCS, that are not transmitted in a 5G network.

It should be noted that, when the PDU session is of an Ethernet frame type, the Ethernet PDU may carry a Virtual Local Area Network (VLAN) field, or may not carry a VLAN header, and the corresponding Ethernet frame structures are different. The VLAN field may also be referred to as Q-tags (Q-tags), which may include user tags (C-tags), which may also be referred to as user VLAN fields (Customer VLAN fields), and Service tags (S-tags), which may also be referred to as Service VLAN fields (Service VLAN fields).

As shown in fig. 7, a frame format of a VLAN field (VLAN field) that can be used for information indicating a VLAN to which the ethernet frame belongs may be added to the frame formats shown in fig. 5 or fig. 7.

It should be understood that the frame formats shown in fig. 5 to 7 are only examples and should not be particularly limited to the embodiments of the present application.

In some embodiments of the present application, the EHC mechanism includes at least one of:

a mechanism to perform state transitions based on the feedback information;

a mechanism to not perform state transitions based on the feedback information;

a mechanism for sending a complete packet or a compressed packet based on feedback information, the complete packet including first header information of the ethernet frame, the compressed packet not including the first header information;

a mechanism to not send the full packet or the compressed packet based on the feedback information;

a mechanism for performing state transition based on a plurality of sending conditions of the same type of packets; and

a mechanism to send the complete packet or the compressed packet based on a plurality of sending cases of the same type of packet.

For example, the mechanism for performing state transition based on multiple sending situations of the same type of packets may be a mechanism for performing state transition based on multiple sending situations of the same type of packets consecutively. The mechanism for transmitting the complete packet or the compressed packet based on the transmission condition of the multiple packets of the same type may be a mechanism for transmitting the complete packet or the compressed packet based on the transmission condition of the multiple packets of the same type.

Illustratively, the transmission scenario may include multiple packets of the same type having been transmitted and/or no multiple packets of the same type. For example, the transmission situation may include that the same type of packet has been transmitted a plurality of times consecutively and/or that the same type of packet has not been transmitted a plurality of times consecutively.

For example, the EHC mechanism of the ethernet frame may be the first mechanism. The first mechanism may also be referred to as a feedback mechanism.

Wherein the first mechanism may refer to:

and the compression end sends a complete packet or a compressed packet to the decompression end after receiving feedback information sent by the decompression end, wherein the feedback information is used for indicating whether the decompression end successfully establishes context information corresponding to the context identifier, the complete packet comprises first frame header information of the Ethernet frame, and the compressed packet does not comprise the first frame header information.

For example, if the feedback information is used to indicate that the decompressor has successfully established the context information corresponding to the context identifier, the compressor receives the feedback information sent by the decompressor and sends a compressed packet to the decompressor. For another example, if the feedback information is used to indicate that the decompression end does not have valid context information/does not successfully establish context information corresponding to the context identifier, the compression end receives the feedback information sent by the decompression end and then sends a complete packet to the decompression end.

That is, the state may be based on a feedback mechanism.

It should be understood that the complete packet may be used to establish context information corresponding to the context identifier at the decompression end, and the context information may be used to recover or decompress the compressed packet.

The working principle of the first mechanism is exemplified below.

A data flow may include a plurality of data packets, and the process of sending the data flow from the compression end to the decompression end is the process of sending the plurality of data packets from the compression end to the decompression end. Based on this, the compression end may determine whether the data packet to be transmitted is a complete packet or a compressed packet based on the EHC mechanism.

In the process of sending the plurality of data packets from the compression end to the decompression end, the compression end first establishes at least one Context information (Context) and associates the at least one Context information with at least one Context Identifier (CID). For example, the compression end may establish at least one sub-object channel, and each sub-object channel of the at least one sub-object channel has (or stores) context information corresponding thereto. The context information may be used to recover the compressed data packet.

The compression side may then send the complete packet to the decompression side.

Illustratively, the complete packet may include first frame header information of an ethernet frame. For example, the first frame header information may be at least partial information of the entire frame header information. The full packet may include a context identifier and full header information (FH). The complete header information may also be referred to as original subheader information. The original sub-header information may be uncompressed sub-header information. The complete packet may further include packet type indication information, where the packet type indication information may be used to indicate that the data packet is a complete packet or a compressed packet, that is, the decompressing end may determine, based on the packet type indication information, whether the received data packet is a complete packet or a compressed packet. The packet type indication information may occupy 1bit.

After receiving the complete packet, the decompressor may establish Context information corresponding to the at least one Context identifier (Context ID, CID) according to the information in the complete packet.

After the decompressor receives the complete packet sent by the compressor, the decompressor may establish context information corresponding to the context identifier based on the complete packet, and may send feedback information to the compression device. The feedback information may be used to feed back a result of establishing the context information corresponding to the context identifier, and the result of establishing may be used to indicate whether the decompression end has successfully established the context information corresponding to the context identifier. The feedback information may be used to alter the EHC mechanism at either the compression side or the decompression side.

Illustratively, the feedback information is an Acknowledgement (ACK) to indicate that the context information corresponding to the context identifier is successfully established. For another example, the feedback information includes a Negative Acknowledgement (NACK) to indicate that the context information corresponding to the context identifier is not successfully established.

Illustratively, as long as the feedback information is received, the context information corresponding to the context identifier can be considered to be successfully established.

After the compression end receives the feedback information sent by the decompression end, it may be determined whether to send a compressed packet or send a complete packet based on the feedback information.

For example, if the feedback information is used to indicate that the decompression end does not successfully establish the context information corresponding to the context identifier, the compression end receives the feedback information sent by the decompression end and sends a complete packet to the decompression end, so that the decompression end continues to establish the context information corresponding to the context identifier. It should be noted that, when or before the feedback information is received, the packet sent by the compression end may be a complete packet or a compressed packet.

For another example, if the feedback information is used to indicate that the decompressing end has successfully established the context information corresponding to the context identifier, the compressing end receives the feedback information sent by the decompressing end and sends a compressed packet to the decompressing end. After receiving the compressed packet, the decompressor may correspond the compressed packet to the sub-object channel corresponding to the context identifier, that is, may recover the header information of the compressed packet based on the context identifier in the packet and the context information corresponding to the context identifier. In other words, the decompressing end may obtain the context information corresponding to the context identifier according to the context identifier in the compressed packet, and refill the context information in the data packet to recover the compressed packet.

For example, taking a compressed packet including one Q-tag as an example, the compressed packet includes a context ID1; after receiving the compressed packet sent by the compression end, the decompression end may map the compressed packet to a sub-object channel corresponding to the context ID1, so that the decompression end may recover the compressed packet according to information included in the compressed packet and context information in the sub-object channel corresponding to the context ID 1.

Illustratively, the compressed packet may include a context identifier and compressed header information (CH). For example. The compressed packet does not include the first frame header information included in the complete packet. The compressed packet may further include second frame header information. And the second frame header information is sub-header information which is not included in the complete packet. The sub-header information not included in the complete packet may be the sub-header information that is not included or not stored in the context information corresponding to the context identifier. The compressed packet may also include a packet type indication, the packet type indication information may be used to indicate that the data packet is a complete packet or a compressed packet, and the decompressor may determine whether the received data packet is a complete packet or a compressed packet based on the packet type indication information. For example, the packet type indication information may occupy 1bit.

The following description is made with respect to the contents included in the complete packet and the compressed packet in conjunction with the header of the ethernet frame.

Illustratively, the header of the ethernet frame may include a variable portion and a static portion. For example, the variable portion may include a VLAN field, a length and type field, etc., and the static portion may include a source address and a destination address, etc. Based on this, the complete packet may include part or all of the subheader information in the static portion of the ethernet frame, and the compressed packet may include part or all of the subheader information in the variable portion of the ethernet frame.

Illustratively, the complete packet or the compressed packet may include partial category sub-header information of the ethernet frame, which may also be referred to as sub-header information in a domain of partial categories. For example, the full packet or the compressed packet may include uncompressed information of partial classes of subheaders. Illustratively, the category of the subheader of the ethernet frame may include at least one of: static (static) class, known static-known class, defined static-def class, inferred (inferred) class, and variable (changing) class.

For example, the full packet may include the sub-header information of the immutable class. For example, the unchanged classes may include a static class, a static-known class, a static-def class, and an affered class. As another example, the unchanged types may include partial subheaders in the static category, static-known category, static-def category, and referenced category. For example, the compressed packet may include sub-header information of the changing category. For another example, the compressed packet may be a sub-header for a changing category and another part of sub-header for an invoked category.

Illustratively, the complete packet may include all sub-header information in the header of the ethernet frame. The compressed packet may include at least part of the sub-header information in the frame header of the ethernet frame, which may also be referred to as sub-header information in the partial domain. For example, the compressed packet may include at least one of: destination address, source address, ethernet type, ethernet length, tag Protocol identification (TP-ID), precedence Code Point (PCP), drop Indicator (DEI), VLAN ID, LLC information, padding bits.

Wherein the TP-ID may be used to indicate a frame type. The PCP or Priority (PRI) may be used to indicate the Priority of the frame, and when the network is congested, the packet with the higher PCP Priority is sent preferentially. The DEI may be used to indicate a drop priority, and packets with a low priority are dropped preferentially when the network is congested.

It should be noted that the sub-headers included in the ethernet frame header are merely examples, and as the standard is updated and developed, the sub-headers in the ethernet frame header may be deleted, added or updated. Further, which subheader information is compressed or which types of subheaders are compressed may be determined by information used to configure parameters of the compression mechanism.

Fig. 8 is a schematic block diagram of the principle of the first mechanism provided by the embodiments of the present application.

As shown in fig. 8, the at least one context information established by the compression end includes context 1, context 2, and context 3 corresponding to CID1, CID2, and CID3, respectively. The data packet to be transmitted, which is sent to the decompression end by the compression end, is an ethernet frame, and the ethernet frame may include a frame header and a bearer. After the compression end sends the complete packet to the decompression end, the decompression end sends feedback information to the compression end, and the compression end sends the compressed packet to the decompression end. Wherein the complete packet may include a context identifier CIDx, complete header information, and a payload, the feedback information may include a context identifier CIDx, and the compressed packet may include a context identifier CIDx, compressed header information, and a payload.

Of course, in the embodiment of the present application, the EHC mechanism of the ethernet frame may be another mechanism.

Illustratively, the EHC mechanism of the ethernet frame may be the second mechanism.

Wherein the second mechanism refers to:

and the compression end continuously sends a plurality of complete packets to the decompression end and then sends the compressed packets to the decompression end, and/or the compression end continuously sends the complete packets to the decompression end after a plurality of compressed packets are generated to the decompression end.

For example, the number of the plurality of complete packets or the number of the plurality of compressed packets may be a preconfigured or predefined number, may be a result of negotiation between the compression end and the decompression end, and may be information indicated by other devices.

The second mechanism is used for transmitting the Ethernet frame, and under the condition that no available reverse link exists between the compression end and the decompression end, or the reverse link is unavailable, or the channel quality of the reverse link is poor, or the channel quality is good, the success rate of data transmission can be improved, and the user experience can be improved.

A method for determining the EHC mechanism by the compression end is described below by taking the EHC mechanism including the first mechanism or the second mechanism as an example.

the compression end determines the first mechanism or the second mechanism as the EHC mechanism based on the first information.

For example, the compression end may determine the first mechanism or the second mechanism as the EHC mechanism based directly on the first information. For another example, the compression end may determine a network environment or an interference environment between the compression end and the decompression end based on the first information, and then determine the EHC mechanism based on the network environment or the interference environment.

The following describes an implementation of the compression end determining the EHC mechanism directly based on the first information.

In some embodiments of the present application, the first information includes first indication information indicating the first mechanism or the second mechanism; based on this, the compression end may determine the first mechanism or the second mechanism indicated by the first indication information as the EHC mechanism.

In other words, the first indication information may be directly used to indicate a frame header compression mechanism of the ethernet frame.

In some embodiments of the present application, the first information includes second indication information indicating an environment level of a network environment between the compression side and the decompression side. Based on this, the compression end may determine the EHC mechanism by the environment indicated based on the second indication information. For example, if the environmental level indicated by the second indication information is less than a first threshold, the compression end determines the first mechanism as the EHC mechanism; and/or if the environment level indicated by the second indication information is greater than or equal to the first threshold, the compression end determines the second mechanism as the EHC mechanism. For another example, if the environmental level indicated by the second indication information is greater than or equal to a first threshold, the compression end determines the first mechanism as the EHC mechanism; and/or if the environmental level indicated by the second indication information is less than the first threshold, the compression end determines the second mechanism as the EHC mechanism. Optionally, the first threshold is a predefined threshold, or the first threshold is a preconfigured threshold, or the first threshold is a dynamically configured threshold. Optionally, the first information includes the first threshold.

As an example, in a case that a magnitude of a numerical value of the environmental level indicated by the second indication information is proportional to a magnitude of an interference degree of a network environment between the compression end and the decompression end, if the environmental level indicated by the second indication information is smaller than a first threshold, the compression end determines the first mechanism as the EHC mechanism; and/or if the environmental level indicated by the second indication information is greater than or equal to the first threshold, the compression end determines the second mechanism as the EHC mechanism.

As another example, in a case that a magnitude of a numerical value of the environmental level indicated by the second indication information is inversely proportional to a magnitude of an interference degree of a network environment between the compression end and the decompression end, if the environmental level indicated by the second indication information is greater than or equal to a first threshold, the compression end determines the first mechanism as the EHC mechanism; and/or if the environmental level indicated by the second indication information is less than the first threshold, the compression end determines the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes an indication of whether the decompressor to compressor link is controlled or whether the reverse link is controlled. For example, when controlled, a first mechanism may be employed as the EHC mechanism, and otherwise a second mechanism may be employed as the EHC mechanism.

In some embodiments of the present application, the first information includes a Channel Occupancy Time (COT) or a controlled Time of the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; based on this, if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, the compression end determines the first mechanism as the EHC mechanism; and/or if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the compression end determines the second mechanism as the EHC mechanism.

In other words, the compressing end determines the first mechanism as the EHC mechanism in a case where the feedback information has a transmission resource, and determines the second mechanism as the EHC mechanism in a case where a transmission channel of the feedback information is unavailable or does not have a transmission resource.

In some embodiments of the present application, the first information includes channel quality information indicating a channel quality of a reverse link from the decompressing side to the compressing side; based on this, if the channel quality is greater than or equal to a second threshold, the compression end determines the first mechanism as the EHC mechanism; and/or if the channel quality is less than the second threshold, the compressing end determines the second mechanism as the EHC mechanism. Optionally, the second threshold is a predefined threshold, or the second threshold is a preconfigured threshold, or the second threshold is a dynamically configured threshold. Optionally, the first information includes the second threshold.

Illustratively, the channel quality information includes at least one of: received Signal Strength Indication (RSSI), reference Signal Receiving Power (RSRP), reference Signal Receiving Quality (RSRQ), and number of Listen Before Talk (LBT).

In other words, the compressing end determines the first mechanism as the EHC mechanism in a case where the channel quality can satisfy the transmission of the feedback information, and determines the second mechanism as the EHC mechanism in a case where the channel quality cannot satisfy the transmission of the feedback information.

In some embodiments of the present application, the first information includes a frequency band used by a reverse link from the decompressing side to the compressing side; based on this, if the frequency band is a licensed frequency band, the compression end determines the first mechanism as the EHC mechanism; and/or if the frequency band is an unlicensed frequency band, the compression end determines the second mechanism as the EHC mechanism.

In other words, if the operating frequency band between the compression end and the decompression end is a licensed frequency band, the compression end determines the first mechanism as the EHC mechanism, and if the operating frequency band between the compression end and the decompression end is an unlicensed frequency band, the compression end determines the second mechanism as the EHC mechanism.

In some embodiments of the present application, the compression side or the decompression side may be a communication device in an NR-U system. For example, the operating frequency band of the compression end or the decompression end may be an unlicensed frequency band. For example, the operating Band (Band) of NR-U may be the 5 gigahertz (GHz) unlicensed spectrum and the 6GHz unlicensed Band.

In other words, the working scenario of the compression end or the decompression end includes any one of the following:

scene A: a carrier aggregation scenario, that is, a Primary Secondary Cell (PSCell) works on a licensed spectrum, and a Secondary Cell (SCell) works on an unlicensed spectrum in an aggregation manner.

Scene B: a dual connectivity working scenario, that is, the PCell works on a Long Term Evolution (LTE) licensed spectrum, and the PSCell works on an NR unlicensed spectrum.

Scene C: independent operating scenarios, i.e. NR operates as an independent cell on unlicensed spectrum.

Scene D: NR single cell scenarios, i.e., uplink (UL) operating on licensed spectrum and Downlink (DL) operating on unlicensed spectrum.

Scene E: the dual connectivity working scenario is that the PCell works on the NR licensed spectrum, and the PSCell works on the NR unlicensed spectrum.

It should be noted that, on the unlicensed spectrum, the NR-U needs to ensure fairness with other systems already operating on the unlicensed spectrum, such as Wireless-Fidelity (WiFi) and the like. Among other things, a principle for guaranteeing fairness may be that the impact of NR-U on systems already deployed on unlicensed spectrum (such as WiFi) cannot exceed the impact between these systems.

In order to ensure fair coexistence between systems over unlicensed spectrum, an energy detection mechanism may be utilized as a coexistence mechanism. For example, a Listen Before Talk (LBT) mechanism, the basic principle of which is: a base station or a terminal (transmission end) needs to listen for a certain period of time according to a specification before transmitting data on an unlicensed spectrum. If the sensed result indicates that the channel is in an idle state, the transmitting end may transmit data to the receiving end. If the interception result indicates that the channel is in an occupied state, the transmission end needs to back off for a period of time according to the regulation and then continues to intercept the channel until the channel interception result is in an idle state, and then the data can be transmitted to the receiving end.

Illustratively, the channel access mechanism (category) may include at least one of:

mechanism 1: the direct transmission mechanism, i.e., the transmitting side (TX), can transmit quickly after a switching gap (switching gap) within a Channel Occupancy Time (COT). The transition gap refers to a transition time of a received transmission, and may be defined not to exceed 16us, for example.

Mechanism 2: the LBT mechanism, i.e. the duration of the time the transmitting side (TX) listens to the channel, is a certain duration, e.g. 25us, without the need for random back-off.

Mechanism 3: the LBT mechanism of random back-off is based on fixed contention window LBT, specifically, in the LBT procedure, the transmitting side randomly selects a random value in the contention window to decide the time for listening to the channel.

Mechanism 4: the LBT mechanism of random back-off is based on unfixed LBT of unfixed contention window, specifically, in the LBT procedure, the transmission side randomly takes a random value in the contention window to decide the time to listen to the channel, and the contention window is variable. For a terminal, data transmission from a base station to the terminal needs to be within a Maximum Channel Occupancy Time (MCOT) Time, and if the base station does not seize a Channel, that is, outside the MCOT, the terminal does not receive scheduling data sent by the base station to the terminal.

For uplink transmission initiated by the terminal device, at least one of the following may be included:

a Scheduling Request (SR) for requesting uplink resources;

a Physical Random Access Channel (PRACH), which triggers a User Equipment (UE) to send a message 1 (msg 1);

a Physical Uplink Shared Channel (PUSCH) including Uplink data transmission based on a configuration grant (configured grant) and Uplink data transmission based on a dynamic grant (dynamic grant);

physical layer signaling, which may include acknowledgement/non-acknowledgement (ACK/NACK) feedback and reporting Information such as Channel State Information (CSI);

it should be noted that, in the unlicensed band, before the terminal device transmits the SR, the PRACH, or the PUSCH, LBT needs to be used to sense whether the channel is available, and if the channel is not available, that is, LBT fails, the terminal device needs to wait until the next transmission opportunity to perform LBT again. If detecting the LBT failure, it needs to inform the MAC layer of the LBT failure information.

In some embodiments of the present application, the first information comprises a frequency band used by a reverse link from the decompressing side to the compressing side; the first information further includes a COT or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; based on this, if the frequency band is an unlicensed frequency band, and the transmission time of the target link or the transmission time of the feedback information is located within the COT or the controlled time, the compression end determines the first mechanism as the EHC mechanism; and/or if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is outside the COT or the controlled time, the compression end determines the second mechanism as the EHC mechanism; and/or if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, the compression end determines the first mechanism as the EHC mechanism; and/or if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the compression end determines the second mechanism as the EHC mechanism.

In other words, the EHC mechanism may be determined based on whether the feedback information has transmission resources and whether an operating frequency band between the compression end and the decompression end is a licensed frequency band.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing end to the compressing end; based on this, if the frequency point is an authorized frequency point, the compression end determines the first mechanism as the EHC mechanism; and/or if the frequency point is an unauthorized frequency point, the compression end determines the second mechanism as the EHC mechanism.

In other words, if the working frequency point between the compression end and the decompression end is an authorized frequency point, the compression end determines the first mechanism as the EHC mechanism, and if the working frequency point between the compression end and the decompression end is an unauthorized frequency point, the compression end determines the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing side to the compressing side; the first information further includes a COT or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; based on this, if the frequency point is an unauthorized frequency point, and the transmission time of the target link or the transmission time of the feedback information is located within the COT or the controlled time, the compression end determines the first mechanism as the EHC mechanism; and/or if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the compression end determines the second mechanism as the EHC mechanism; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, the compression end determines the first mechanism as the EHC mechanism; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the compression end determines the second mechanism as the EHC mechanism.

In other words, the EHC mechanism may be determined based on whether the feedback information has transmission resources and whether a working frequency point between the compression end and the decompression end is an authorized frequency point.

In some embodiments of the present application, the first information includes information for determining or indicating a target context for representing a transmission or interference context between the compressing end and the decompressing end; based on this, the compression end determines a mechanism corresponding to the target environment as the EHC mechanism based on a first mapping relationship, where the first mapping relationship includes a correspondence relationship between at least one environment and at least one mechanism, and the at least one environment includes the target environment. Optionally, the first mapping relationship is predefined information, or the first mapping relationship is preconfigured information, or the first mapping relationship is dynamically configured information. Optionally, the first information includes the first mapping relationship.

In other words, different compression mechanisms may be associated for different transmission or interference environments between the compression side and the decompression side.

As one example, the at least one environment corresponds to at least one environment level identification. For example, the at least one environmental level is at least two environmental levels.

As another example, the at least one environment includes at least one type of environment.

For example, the at least one type of environment includes a controllable environment and/or a non-controllable environment.

Wherein the controllable environment refers to: a transmission or interference environment between the compression end and the decompression end satisfies at least one of:

the network systems of the compression end and the decompression end do not have different systems;

a controlled different system or controlled time exists in a network system to which the compression end and the decompression end belong, the controlled different system corresponds to or has controlled time, the controlled time is time available for a target link or time available for receiving/transmitting the feedback information, and the target link comprises a reverse link from the compression end to the decompression end or a link from the decompression end to the compression end; and

the load or the interference of a feedback link between the compression end and the decompression end is less than a preset threshold value;

the non-controllable environment refers to: a transmission or interference environment between the compression end and the decompression end satisfies at least one of:

different systems exist in the network systems to which the compression end and the decompression end belong;

an uncontrolled heterogeneous system exists in the network system to which the compression end and the decompression end belong; and

and the network system to which the compression end and the decompression end belong does not have a different system, and the load or the interference of a feedback link between the compression end and the decompression end is greater than or equal to the environment of a preset threshold value.

In some embodiments of the present application, the heterogeneous system comprises a Wireless-Fidelity (WiFi) system.

The following describes an implementation manner of determining the target environment provided by the embodiment of the present application, by taking the controllable environment and the non-controllable environment as an example.

It should be noted that, the compression end may directly determine, as the EHC mechanism, a mechanism corresponding to the target environment based on the first mapping relationship. For another example, the compressing end may determine the target environment first, and then determine, based on the first mapping relationship, a mechanism corresponding to the target environment as the EHC mechanism.

In some embodiments of the present application, the mechanism corresponding to the controllable environment is the first mechanism, and the mechanism corresponding to the non-controllable environment is the second mechanism; based on this, if the target environment is the controllable environment, the compression end determines the first mechanism as the EHC mechanism; and/or if the target environment is the uncontrolled environment, the compression end determines the second mechanism as the EHC mechanism.

the compression end determines the controllable environment or the uncontrollable environment as the target environment based on the first information.

In some embodiments of the present application, the first information includes third indication information indicating a transmission or interference environment between the compression end and the decompression end; based on this, the compression end determines the environment indicated by the third indication information as the target environment.

In some embodiments of the present application, the first information includes fourth indication information indicating an environment level of a network environment between the compression side and the decompression side. The compression end may determine the target environment by an environment indicated based on the fourth indication information. For example, if the environment level indicated by the fourth indication information is less than a third threshold, the compression end determines the controllable environment as the target environment; and/or if the environment level indicated by the fourth indication information is greater than or equal to the third threshold, the compression end determines the uncontrollable environment as the target environment. For another example, if the environment level indicated by the fourth indication information is greater than or equal to a third threshold, the compression end determines the controllable environment as the target environment; and/or if the environment level indicated by the fourth indication information is less than the third threshold, the compression end determines the uncontrollable environment as the target environment.

As an example, in a case that a numerical value of the environment level indicated by the second indication information is directly proportional to a magnitude of an interference degree of a network environment between the compression end and the decompression end, if the environment level indicated by the fourth indication information is smaller than a third threshold, the compression end determines the controllable environment as the target environment; and/or if the environment level indicated by the fourth indication information is greater than or equal to the third threshold, the compression end determines the uncontrollable environment as the target environment. Optionally, the third threshold is a predefined threshold, or the third threshold is a preconfigured threshold, or the third threshold is a dynamically configured threshold. Optionally, the first information includes the third threshold.

As another example, in a case where a magnitude of a numerical value of the environment level indicated by the second indication information is inversely proportional to a magnitude of an interference degree of a network environment between the compression end and the decompression end, if the environment level indicated by the fourth indication information is greater than or equal to a third threshold, the compression end determines the controllable environment as the target environment; and/or if the environment level indicated by the fourth indication information is less than the third threshold, the compression end determines the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information comprises the indication of whether or not to be controlled. The controlled indication determines the controllable environment as the target environment on behalf of the compression end, otherwise the non-controllable environment is determined as the target environment on behalf of the compression end.

In some embodiments of the present application, the first information includes a COT or a controlled time of the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; based on this, if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, the compression end determines the controllable environment as the target environment; and/or if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the compression end determines the uncontrollable environment as the target environment.

In other words, the compression end determines the controllable environment as the target environment in a case where a transmission channel of the feedback information is available or has a transmission resource, and determines the uncontrollable environment as the target environment in a case where the feedback information does not have a transmission resource.

In some embodiments of the present application, the first information includes channel quality information indicating a channel quality of a reverse link from the decompressing side to the compressing side; based on this, if the channel quality is greater than or equal to a fourth threshold, the compression end determines the controllable environment as the target environment; and/or if the channel quality is smaller than the fourth threshold, the compression end determines the uncontrollable environment as the target environment. Optionally, the fourth threshold is a predefined threshold, or the fourth threshold is a preconfigured threshold, or the fourth threshold is a dynamically configured threshold. Optionally, the first information includes the fourth threshold.

Illustratively, in some embodiments of the present application, the number of Received Signal Strength Indications (RSSI), reference Signal Receiving Power (RSRP), reference Signal Receiving Quality (RSRQ), and Listen Before Talk (LBT) times.

In other words, the compression end determines the controllable environment as the target environment in the case that the channel quality can satisfy the transmission of the feedback information, and determines the uncontrollable environment as the target environment in the case that the channel quality cannot satisfy the transmission of the feedback information.

In other words, the compression end determines the controllable environment as the target environment when the feedback information has transmission resources, and determines the uncontrollable environment as the target environment when the feedback information does not have transmission resources.

In some embodiments of the present application, the first information comprises a frequency band used by a reverse link from the decompressing side to the compressing side; based on this, if the frequency band is an authorized frequency band, the compression end determines the controllable environment as the target environment; and/or if the frequency band is an unauthorized frequency band, the compression end determines the uncontrollable environment as the target environment.

In other words, if the operating frequency band between the compression end and the decompression end is an authorized frequency band, the compression end determines the controllable environment as the target environment, and if the operating frequency band between the compression end and the decompression end is an unauthorized frequency point, the compression end determines the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes a frequency band used by a reverse link from the decompressing side to the compressing side; the first information further includes a COT or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time usable by a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; based on this, if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is located within the COT or the controlled time, the compression end determines the controllable environment as the target environment; and/or if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the compression end determines the uncontrollable environment as the target environment; and/or if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, the compression end determines the controllable environment as the target environment; and/or if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the compression end determines the uncontrollable environment as the target environment.

In other words, the target environment may be determined based on whether the feedback information has transmission resources and whether an operating frequency band between the compression end and the decompression end is a licensed frequency band.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing side to the compressing side; based on this, if the frequency point is an authorized frequency point, the compression end determines the controllable environment as the target environment; and/or if the frequency point is an unauthorized frequency point, the compression end determines the uncontrollable environment as the target environment.

In other words, if the working frequency point between the compression end and the decompression end is an authorized frequency point, the compression end determines the controllable environment as the target environment, and if the working frequency point between the compression end and the decompression end is an unauthorized frequency point, the compression end determines the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing side to the compressing side; the first information further includes a COT or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time usable by a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; based on this, if the frequency point is an unauthorized frequency point, and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, the compression end determines the controllable environment as the target environment; and/or if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the compression end determines the uncontrollable environment as the target environment; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, the compression end determines the controllable environment as the target environment; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the compression end determines the uncontrollable environment as the target environment.

In other words, the target environment may be determined based on whether the feedback information has transmission resources and whether a working frequency point between the compression end and the decompression end is an authorized frequency point.

In some embodiments of the present application, the first information comprises at least one of:

a carrier, a Public Land Mobile Network (PLMN), cell Access Group (CAG) information, stand-alone non-Public Network (SNPN) information, and geographical area information.

In other words, the compression end may also determine the EHC mechanism based on at least one of the carrier, the PLMN, the CAG information, the SNPN information, and the geographic area information, or the compression end may directly determine the corresponding EHC mechanism based on at least one of the carrier, the PLMN, the CAG information, the SNPN information, and the geographic area information. Or, the compressing end may determine the EHC mechanism based on at least one of the carrier, the PLMN, the CAG information, the SNPN information, and the geographic area information, or the compressing end may determine the target environment based on at least one of the carrier, the PLMN, the CAG information, the SNPN information, and the geographic area information, and then determine a mechanism corresponding to the target environment as the EHC mechanism.

In some embodiments of the present application, the first Information is carried in a broadcast channel, RRC, a media access Control MAC Control Element (CE), or Downlink Control Information (DCI).

In some embodiments of the present application, the S210 may include:

and if the protocol data unit PDU session type between the compression end and the decompression end is an Ethernet frame, acquiring the first information.

In other words, the protocol data unit PDU session type between the compression end and the decompression end is an ethernet frame, which can be used as a trigger condition for the compression end to obtain the first information. Namely, after the compression end determines that the protocol data unit PDU session type between the compression end and the decompression end is an Ethernet frame, the first information is obtained. Alternatively, it may be considered as a determination condition that the compression end/the decompression end determines which EHC mechanism is used/which state transition manner is adopted.

selecting/judging/switching the EHC mechanism based on the first information.

In other words, the compression side may select/determine/switch the compression mechanism used by the compression side based on the first information. For example, the compression end may switch the compression mechanism used by the compression end from the first mechanism to the second mechanism based on the first information. As another example, the compression side may switch the compression mechanism used by the compression side from the second mechanism to the first mechanism based on the first information.

Fig. 9 is a method for switching an EHC mechanism according to an embodiment of the present application.

As shown in fig. 9, the method 300 may include:

s310, a first device sends the first information to a terminal device, where the first device may be another terminal device, an access network device, or a core network device.

S320, the terminal device switches the EHC mechanism of the Ethernet frame based on the first information.

and sending fifth indication information to the opposite terminal, wherein the fifth indication information is used for indicating the mechanism for compressing the frame header of the Ethernet frame.

For example, the opposite end is a decompressing end, that is, the compressing end may send the fifth indication information to the decompressing end. For another example, the opposite end may be a compressing end, that is, the decompressing end may send the fifth indication information to the compressing end.

It should be noted that, the compression end may determine the compression mechanism to be used, and further indicate the selected compression mechanism to the decompression end; the compression scheme to be used may also be determined by the decompression end and further the selected compression scheme may be indicated to the compression end.

In some embodiments of the present application, the fifth indication information is carried in dedicated signaling, such as at least one of broadcast, RRC, MAC CE, DCI, etc.

The preferred embodiments of the present application have been described in detail with reference to the accompanying drawings, however, the present application is not limited to the details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the technical idea of the present application, and these simple modifications are all within the protection scope of the present application.

For example, the various features described in the foregoing detailed description may be combined in any suitable manner without contradiction, and various combinations that may be possible are not described in this application in order to avoid unnecessary repetition.

For example, various embodiments of the present application may be arbitrarily combined with each other, and the same shall be considered as the disclosure of the present application as long as the concept of the present application is not violated.

It should be understood that, in the various method embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The method for compressing the frame header of the ethernet frame according to the embodiment of the present application is described in detail from the perspective of the compression end in conjunction with fig. 4 to 9, and the method for decompressing the frame header of the ethernet frame according to the embodiment of the present application is described from the perspective of the decompression end in conjunction with fig. 10.

Fig. 10 shows a schematic flow chart of a method 400 of decompressing a frame header of an ethernet frame according to an embodiment of the present application. It should be understood that the steps in the method 400 for decompressing the frame header of the ethernet frame may refer to the corresponding steps in the method 200 for compressing the frame header of the ethernet frame, and are not described herein again for brevity.

As shown in fig. 10, the method 400 includes:

s410, the decompressing end acquires first information, wherein the first information is used for determining a frame header compression EHC mechanism of the Ethernet frame.

S410, the decompressing end decompresses the frame header of the Ethernet frame and/or receives the Ethernet frame based on the EHC mechanism.

a mechanism to perform state transitions based on the feedback information; a mechanism to not perform state transitions based on the feedback information; a mechanism for sending a complete packet or a compressed packet based on feedback information, the complete packet including first header information of the ethernet frame, the compressed packet not including the first header information; and a mechanism to not send the full packet or the compressed packet based on the feedback information; a mechanism for performing state transition based on a plurality of sending conditions of the same type of packets; and a mechanism for transmitting the complete packet or the compressed packet based on a plurality of transmission conditions of the same type of packet.

In some embodiments of the present application, the EHC mechanism includes a first mechanism and/or a second mechanism; the first mechanism is: a compression end sends a complete packet or a compressed packet to a decompression end after receiving feedback information sent by the decompression end, wherein the feedback information is used for indicating whether the decompression end successfully establishes context information corresponding to a context identifier, the complete packet comprises first frame header information of the Ethernet frame, and the compressed packet does not comprise the first frame header information; the second mechanism refers to: and the compression end continuously sends a plurality of complete packets to the decompression end and then sends the compressed packets to the decompression end, and/or the compression end continuously sends the complete packets to the decompression end after a plurality of compressed packets are generated to the decompression end.

In some embodiments of the present application, the method 400 may further include:

based on the first information, the decompressing end determines the first mechanism or the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes first indication information indicating the first mechanism or the second mechanism; based on this, the decompressing end determines the first mechanism or the second mechanism indicated by the first indication information as the EHC mechanism.

In some embodiments of the present application, the first information includes second indication information indicating an environment level of a network environment between the compression side and the decompression side. For example, if the environment level indicated by the second indication information is less than a first threshold, the decompressing end determines the first mechanism as the EHC mechanism; and/or if the environment level indicated by the second indication information is greater than or equal to the first threshold, the decompressing end determines the second mechanism as the EHC mechanism. For another example, if the environment level indicated by the second indication information is greater than or equal to a first threshold, the decompressing end determines the first mechanism as the EHC mechanism; and/or if the environment level indicated by the second indication information is less than the first threshold, the decompressing end determines the second mechanism as the EHC mechanism. Optionally, the first threshold is a predefined threshold, or the first threshold is a preconfigured threshold, or the first threshold is a dynamically configured threshold. Optionally, the first information includes the first threshold.

In some embodiments of the present application, the first information includes a channel occupancy time COT or a controlled time of the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; based on this, if the transmission time of the target link or the transmission time of the feedback information is located in the COT or the controlled time, the decompressing end determines the first mechanism as the EHC mechanism; and/or if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the decompression end determines the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes channel quality information indicating a channel quality of a reverse link from the decompressing side to the compressing side; based on this, if the channel quality is greater than or equal to a second threshold, the decompressing end determines the first mechanism as the EHC mechanism; and/or if the channel quality is less than the second threshold, the decompressing end determines the second mechanism as the EHC mechanism. Optionally, the second threshold is a predefined threshold, or the second threshold is a preconfigured threshold, or the second threshold is a dynamically configured threshold. Optionally, the first information includes the second threshold.

In some embodiments of the present application, the channel quality information comprises at least one of: RSSI, RSRP, RSRQ, and number of LBTs.

In some embodiments of the present application, the first information comprises a frequency band used by a reverse link from the decompressing side to the compressing side; based on this, if the frequency band is a licensed frequency band, the decompressing end determines the first mechanism as the EHC mechanism; and/or if the frequency band is an unlicensed frequency band, the decompressing end determines the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information comprises a frequency band used by a reverse link from the decompressing side to the compressing side; the first information further includes a channel occupancy time COT or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time usable by a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; based on this, if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, the decompressing end determines the first mechanism as the EHC mechanism; and/or if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is outside the COT or the controlled time, the decompressing end determines the second mechanism as the EHC mechanism; and/or if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, the decompression end determines the first mechanism as the EHC mechanism; and/or if the frequency band is an authorized frequency band and the transmission time of the target link or the transmission time of the feedback information is outside the COT or the controlled time, the decompressing end determines the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing side to the compressing side; based on this, if the frequency point is an authorized frequency point, the decompressing end determines the first mechanism as the EHC mechanism; and/or if the frequency point is an unauthorized frequency point, the decompression end determines the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing side to the compressing side; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; based on this, if the frequency point is an unauthorized frequency point, and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the controlled time, the decompression end determines the first mechanism as the EHC mechanism; and/or if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is outside the COT or the controlled time, the decompression end determines the second mechanism as the EHC mechanism; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, the decompression end determines the first mechanism as the EHC mechanism; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the decompression end determines the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes information for determining or indicating a target context for representing a transmission or interference context between the compressing end and the decompressing end; based on this, the decompression end determines a mechanism corresponding to the target environment as the EHC mechanism based on a first mapping relationship, where the first mapping relationship includes a correspondence relationship between at least one environment and at least one mechanism, and the at least one environment includes the target environment. Optionally, the first mapping relationship is predefined information, or the first mapping relationship is preconfigured information, or the first mapping relationship is dynamically configured information. Optionally, the first information includes the first mapping relationship. Optionally, the at least one environment corresponds to at least one environment level identifier. Optionally, the at least one environmental level is at least two environmental levels. Optionally, the at least one environment includes at least one type of environment.

In some embodiments of the present application, the at least one type of environment comprises a controllable environment and/or a non-controllable environment; the controllable environment refers to: a transmission or interference environment between the compression end and the decompression end satisfies at least one of the following:

the network system to which the compression end and the decompression end belong does not have a different system;

In some embodiments of the present application, the heterogeneous system comprises a WIFI system.

In some embodiments of the present application, the mechanism corresponding to the controllable environment is the first mechanism, and the mechanism corresponding to the non-controllable environment is the second mechanism; based on this, if the target context is the controllable context, the decompressing end determines the first mechanism as the EHC mechanism; and/or if the target environment is the uncontrolled environment, the decompressing end determines the second mechanism as the EHC mechanism.

based on the first information, the decompressing end determines the controllable environment or the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes third indication information indicating a transmission or interference environment between the compression end and the decompression end; based on this, the decompressing end determines the context indicated by the third indication information as the target context.

In some embodiments of the present application, the first information includes fourth indication information indicating an environment level of a network environment between the compression side and the decompression side. For example, if the environment level indicated by the fourth indication information is less than a third threshold, the decompressing end determines the controllable environment as the target environment; and/or if the environment level indicated by the fourth indication information is greater than or equal to the third threshold, the decompressing end determines the uncontrollable environment as the target environment. For another example, if the environment level indicated by the fourth indication information is greater than or equal to a third threshold, the decompressing end determines the controllable environment as the target environment; and/or if the environment level indicated by the fourth indication information is less than the third threshold, the decompression end determines the uncontrollable environment as the target environment. Optionally, the third threshold is a predefined threshold, or the third threshold is a preconfigured threshold, or the third threshold is a dynamically configured threshold. Optionally, the first information includes the third threshold.

In some embodiments of the present application, the first information includes a channel occupancy time COT or a controlled time of the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; based on this, if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, the decompressing end determines the controllable environment as the target environment; and/or if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the decompression end determines the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes channel quality information indicating a channel quality of a reverse link from the decompressing side to the compressing side; based on this, if the channel quality is greater than or equal to a fourth threshold, the decompressing end determines the controllable environment as the target environment; and/or if the channel quality is less than the fourth threshold, the decompressing end determines the uncontrollable environment as the target environment. Optionally, the fourth threshold is a predefined threshold, or the fourth threshold is a preconfigured threshold, or the fourth threshold is a dynamically configured threshold. Optionally, the first information includes the fourth threshold.

In some embodiments of the present application, the channel quality information comprises at least one of: the received signal strength indication RSSI, the reference signal received power RSRP, the reference signal received quality RSRQ, and the number of listen before talk, LBT.

In some embodiments of the present application, the first information includes a channel occupancy time COT or a controlled time of the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, where the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; based on this, if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, the decompression end determines the controllable environment as the target environment; and/or if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the decompression end determines the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information comprises a frequency band used by a reverse link from the decompressing side to the compressing side; based on this, if the frequency band is a licensed frequency band, the decompressing end determines the controllable environment as the target environment; and/or if the frequency band is an unauthorized frequency band, the decompression end determines the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information comprises a frequency band used by a reverse link from the decompressing side to the compressing side; the first information further includes a channel occupancy time COT or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time usable by a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; based on this, if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is located within the COT or the controlled time, the decompressing end determines the controllable environment as the target environment; and/or if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the decompressing end determines the uncontrollable environment as the target environment; and/or if the frequency band is an authorized frequency band and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, the decompression end determines the controllable environment as the target environment; and/or if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the decompressing end determines the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing end to the compressing end; based on this, if the frequency point is an authorized frequency point, the decompression end determines the controllable environment as the target environment; and/or if the frequency point is an unauthorized frequency point, the uncompressing end determines the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing end to the compressing end; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; based on this, if the frequency point is an unauthorized frequency point, and the transmission time of the target link or the transmission time of the feedback information is located within the COT or the controlled time, the decompression end determines the controllable environment as the target environment; and/or if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the uncompressing end determines the uncontrollable environment as the target environment; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, the decompression end determines the controllable environment as the target environment; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, the uncompressing end determines the uncontrollable environment as the target environment.

carrier, public land mobile network PLMN, cell access group CAG information, independent non-public network SNPN information, and geographical area information.

In some embodiments of the present application, the first information is carried in a broadcast channel, a radio resource control RRC, a medium access control element MAC CE, or downlink control information DCI.

In some embodiments of the present application, if a protocol data unit PDU session type between the compression end and the decompression end is an ethernet frame, the first information is obtained.

In some embodiments of the present application, the method 400 may further comprise:

switching the EHC mechanism based on the first information.

In some embodiments of the present application, the fifth indication information is carried in dedicated signaling.

configuration information of the EHC mechanism is obtained.

Method embodiments of the present application are described in detail above in conjunction with fig. 1-10, and apparatus embodiments of the present application are described in detail below in conjunction with fig. 11-14.

Fig. 11 is a schematic block diagram of a compression end 500 provided by an embodiment of the present application.

As shown in fig. 11, the compressing end 500 may include:

an obtaining unit 510, configured to obtain first information, where the first information is used to determine a frame header compression EHC mechanism of an ethernet frame; a communication unit 520, configured to compress a header of the ethernet frame and/or send the ethernet frame based on the EHC mechanism.

a mechanism to perform state transitions based on the feedback information; a mechanism to not perform state transitions based on the feedback information; a mechanism that sends a complete packet or a compressed packet based on feedback information, the complete packet including first frame header information of the ethernet frame, the compressed packet not including the first frame header information; a mechanism to not send the full packet or the compressed packet based on the feedback information; a mechanism for performing state transition based on a plurality of sending conditions of the same type of packets; and a mechanism for transmitting the complete packet or the compressed packet based on a plurality of transmission conditions of the same type of packet.

In some embodiments of the present application, the EHC mechanism includes a first mechanism and/or a second mechanism;

the first mechanism is:

a compression end sends a complete packet or a compressed packet to a decompression end after receiving feedback information sent by the decompression end, wherein the feedback information is used for indicating whether the decompression end successfully establishes context information corresponding to a context identifier, the complete packet comprises first frame header information of the Ethernet frame, and the compressed packet does not comprise the first frame header information;

the second mechanism refers to:

In some embodiments of the present application, the communication unit 520 is further configured to:

determining the first mechanism or the second mechanism as the EHC mechanism based on the first information.

In some embodiments of the present application, the first information includes first indication information indicating the first mechanism or the second mechanism; the communication unit 520 is configured to:

determining the first mechanism or the second mechanism indicated by the first indication information as the EHC mechanism.

In some embodiments of the present application, the first information includes second indication information indicating an environment level of a network environment between the compression side and the decompression side.

In some embodiments of the present application, the communication unit 520 is configured to: determining the first mechanism as the EHC mechanism if the environmental level indicated by the second indication information is less than a first threshold; and/or determining the second mechanism as the EHC mechanism if the environmental level indicated by the second indication information is greater than or equal to the first threshold.

In some embodiments of the present application, the communication unit 520 is configured to: determining the first mechanism as the EHC mechanism if the environmental level indicated by the second indication information is greater than or equal to a first threshold; and/or determining the second mechanism as the EHC mechanism if the environmental level indicated by the second indication information is less than the first threshold.

In some embodiments of the present application, the first threshold is a predefined threshold, or the first threshold is a preconfigured threshold, or the first threshold is a dynamically configured threshold.

In some embodiments of the present application, the first information comprises the first threshold.

In some embodiments of the present application, the first information includes a channel occupancy time COT or a controlled time of the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, where the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; the communication unit 520 is configured to: if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the first mechanism as the EHC mechanism; and/or if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes channel quality information indicating a channel quality of a reverse link from the decompressing side to the compressing side; the communication unit 520 is configured to: determining the first mechanism as the EHC mechanism if the channel quality is greater than or equal to a second threshold; and/or determining the second mechanism as the EHC mechanism if the channel quality is less than the second threshold.

In some embodiments of the present application, the second threshold is a predefined threshold, or the second threshold is a preconfigured threshold, or the second threshold is a dynamically configured threshold.

In some embodiments of the present application, the first information comprises the second threshold.

In some embodiments of the present application, the first information comprises a frequency band used by a reverse link from the decompressing side to the compressing side; the communication unit 520 is configured to: determining the first mechanism as the EHC mechanism if the frequency band is a licensed frequency band; and/or determining the second mechanism as the EHC mechanism if the frequency band is an unlicensed frequency band.

In some embodiments of the present application, the first information includes a frequency band used by a reverse link from the decompressing side to the compressing side; the first information further includes a channel occupancy time COT or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time usable by a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; the communication unit 520 is configured to: if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the first mechanism as the EHC mechanism; and/or if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is outside the COT or the controlled time, determining the second mechanism as the EHC mechanism; and/or if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the first mechanism as the EHC mechanism; and/or if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is outside the COT or the controlled time, determining the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing side to the compressing side; the communication unit 520 is configured to: if the frequency point is an authorized frequency point, determining the first mechanism as the EHC mechanism; and/or if the frequency point is an unauthorized frequency point, determining the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing end to the compressing end; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; the communication unit 520 is configured to: if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the first mechanism as the EHC mechanism; and/or if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the second mechanism as the EHC mechanism; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the first mechanism as the EHC mechanism; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes information for determining or indicating a target context for representing a transmission or interference context between the compression end and the decompression end; the communication unit 520 is configured to: determining a mechanism corresponding to the target environment as the EHC mechanism based on a first mapping relationship, the first mapping relationship including a correspondence relationship of at least one environment and at least one mechanism, the at least one environment including the target environment.

In some embodiments of the present application, the first mapping relationship is predefined information, or the first mapping relationship is preconfigured information, or the first mapping relationship is dynamically configured information.

In some embodiments of the present application, the first information comprises the first mapping relationship.

In some embodiments of the present application, the at least one environment corresponds to at least one environment level identification.

In some embodiments of the present application, the at least one environmental level is at least two environmental levels.

In some embodiments of the present application, the at least one environment comprises at least one type of environment.

In some embodiments of the present application, the at least one type of environment comprises a controllable environment and/or a non-controllable environment;

the controllable environment refers to: a transmission or interference environment between the compression end and the decompression end satisfies at least one of the following:

In some embodiments of the present application, the mechanism corresponding to the controllable environment is the first mechanism, and the mechanism corresponding to the uncontrollable environment is the second mechanism; the communication unit 520 is configured to: determining the first mechanism as the EHC mechanism if the target environment is the controllable environment; and/or determining the second mechanism as the EHC mechanism if the target environment is the uncontrolled environment.

determining the controllable environment or the non-controllable environment as the target environment based on the first information.

In some embodiments of the present application, the first information includes third indication information indicating a transmission or interference environment between the compression end and the decompression end; the communication unit 520 is configured to: and determining the environment indicated by the third indication information as the target environment.

In some embodiments of the present application, the first information includes fourth indication information indicating an environment level of a network environment between the compression side and the decompression side.

In some embodiments of the present application, the communication unit 520 is configured to:

if the environment level indicated by the fourth indication information is smaller than a third threshold value, determining the controllable environment as the target environment; and/or if the environment level indicated by the fourth indication information is greater than or equal to the third threshold, determining the uncontrollable environment as the target environment.

if the environment level indicated by the fourth indication information is greater than or equal to a third threshold value, determining the controllable environment as the target environment; and/or if the environment level indicated by the fourth indication information is less than the third threshold, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the third threshold is a predefined threshold, or the third threshold is a preconfigured threshold, or the third threshold is a dynamically configured threshold.

In some embodiments of the present application, the first information comprises the third threshold.

In some embodiments of the present application, the first information includes a channel occupancy time COT or a controlled time of the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, where the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; the communication unit 520 is configured to: if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes channel quality information indicating a channel quality of a reverse link from the decompressing side to the compressing side; the communication unit 520 is configured to: if the channel quality is greater than or equal to a fourth threshold, determining the controllable environment as the target environment; and/or if the channel quality is less than the fourth threshold, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the fourth threshold is a predefined threshold, or the fourth threshold is a preconfigured threshold, or the fourth threshold is a dynamically configured threshold.

In some embodiments of the present application, the first information comprises the fourth threshold.

In some embodiments of the present application, the first information includes a channel occupancy time COT or a controlled time of the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; the communication unit 520 is configured to: if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes a frequency band used by a reverse link from the decompressing side to the compressing side; the communication unit 520 is configured to: if the frequency band is an authorized frequency band, determining the controllable environment as the target environment; and/or if the frequency band is an unlicensed frequency band, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes a frequency band used by a reverse link from the decompressing side to the compressing side; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; the communication unit 520 is configured to: if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment; and/or if the frequency band is an authorized frequency band and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the controllable environment as the target environment; and/or if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing end to the compressing end; the communication unit 520 is configured to: if the frequency point is an authorized frequency point, determining the controllable environment as the target environment; and/or if the frequency point is an unauthorized frequency point, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing side to the compressing side; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; the communication unit 520 is configured to: if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the controllable environment as the target environment; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information is carried in a broadcast channel, a radio resource control RRC, a media access control element MAC CE, or downlink control information DCI.

In some embodiments of the present application, the obtaining unit 510 is configured to: :

switching the EHC mechanism based on the first information.

In some embodiments of the present application, the obtaining unit 510 is further configured to:

configuration information of the EHC mechanism is obtained.

It is to be understood that apparatus embodiments and method embodiments may correspond to one another and that similar descriptions may refer to method embodiments. Specifically, the compression end 500 shown in fig. 11 may correspond to a corresponding main body in executing the method 200 of the embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the compression end 500 are respectively for implementing corresponding flows in each method in fig. 4, and are not described herein again for brevity.

Fig. 12 is a schematic block diagram of a decompression end 600 according to an embodiment of the present application.

As shown in fig. 12, the decompressing end 600 may include:

an obtaining unit 610, configured to obtain first information, where the first information is used to determine a frame header compression EHC mechanism of an ethernet frame; a communication unit 620, configured to decompress a header of the ethernet frame and/or receive the ethernet frame based on the EHC mechanism.

a mechanism to perform state transitions based on the feedback information; a mechanism to not perform state transitions based on the feedback information; a mechanism for sending a complete packet or a compressed packet based on feedback information, the complete packet including first header information of the ethernet frame, the compressed packet not including the first header information; a mechanism to not send the full packet or the compressed packet based on the feedback information; a mechanism for performing state transition based on multiple sending conditions of the same type of packets; and a mechanism for transmitting the complete packet or the compressed packet based on a plurality of transmission conditions of the same type of packet.

In some embodiments of the present application, the EHC mechanism comprises a first mechanism and/or a second mechanism;

the first mechanism is:

the second mechanism refers to:

In some embodiments of the present application, the communication unit 620 is further configured to:

In some embodiments of the present application, the first information includes first indication information indicating the first mechanism or the second mechanism; the communication unit 620 is configured to: determining the first mechanism or the second mechanism indicated by the first indication information as the EHC mechanism.

In some embodiments of the present application, the communication unit 620 is configured to: determining the first mechanism as the EHC mechanism if the environmental level indicated by the second indication information is less than a first threshold; and/or determining the second mechanism as the EHC mechanism if the environmental level indicated by the second indication information is greater than or equal to the first threshold.

In some embodiments of the present application, the communication unit 620 is configured to: determining the first mechanism as the EHC mechanism if the environmental level indicated by the second indication information is greater than or equal to a first threshold; and/or determining the second mechanism as the EHC mechanism if the environmental level indicated by the second indication information is less than the first threshold.

In some embodiments of the present application, the first information includes a channel occupancy time COT or a controlled time of the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; the communication unit 620 is configured to: if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the first mechanism as the EHC mechanism; and/or if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes channel quality information indicating a channel quality of a reverse link from the decompressing side to the compressing side; the communication unit 620 is configured to: determining the first mechanism as the EHC mechanism if the channel quality is greater than or equal to a second threshold; and/or determining the second mechanism as the EHC mechanism if the channel quality is less than the second threshold.

In some embodiments of the present application, the first information comprises a frequency band used by a reverse link from the decompressing side to the compressing side; the communication unit 620 is configured to: determining the first mechanism as the EHC mechanism if the frequency band is a licensed frequency band; and/or determining the second mechanism as the EHC mechanism if the frequency band is an unlicensed frequency band.

In some embodiments of the present application, the first information includes a frequency band used by a reverse link from the decompressing side to the compressing side; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; the communication unit 620 is configured to: if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the first mechanism as the EHC mechanism; and/or if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is outside the COT or the controlled time, determining the second mechanism as the EHC mechanism; and/or if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the first mechanism as the EHC mechanism; and/or if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is outside the COT or the controlled time, determining the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing side to the compressing side; the communication unit 620 is configured to: if the frequency point is an authorized frequency point, determining the first mechanism as the EHC mechanism; and/or if the frequency point is an unauthorized frequency point, determining the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing side to the compressing side; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; the communication unit 620 is configured to: if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the first mechanism as the EHC mechanism; and/or if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the second mechanism as the EHC mechanism; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the first mechanism as the EHC mechanism; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the second mechanism as the EHC mechanism.

In some embodiments of the present application, the first information includes information for determining or indicating a target context for representing a transmission or interference context between the compression end and the decompression end; the communication unit 620 is configured to: determining a mechanism corresponding to the target environment as the EHC mechanism based on a first mapping, the first mapping comprising a correspondence of at least one environment and at least one mechanism, the at least one environment comprising the target environment.

the controllable environment refers to: a transmission or interference environment between the compression end and the decompression end satisfies at least one of:

the load or interference of a feedback link between the compression end and the decompression end is smaller than a preset threshold value;

the non-controllable environment refers to: a transmission or interference environment between the compression end and the decompression end satisfies at least one of the following:

and the network system to which the compression end and the decompression end belong does not have a different system, and the load or the interference of a feedback link between the compression end and the decompression end is greater than or equal to a preset threshold value.

In some embodiments of the present application, the mechanism corresponding to the controllable environment is the first mechanism, and the mechanism corresponding to the uncontrollable environment is the second mechanism; the communication unit 620 is configured to: determining the first mechanism as the EHC mechanism if the target environment is the controllable environment; and/or determining the second mechanism as the EHC mechanism if the target environment is the uncontrolled environment.

determining the controllable environment or the uncontrollable environment as the target environment based on the first information.

In some embodiments of the present application, the first information includes third indication information indicating a transmission or interference environment between the compression end and the decompression end; the communication unit 620 is configured to: and determining the environment indicated by the third indication information as the target environment.

In some embodiments of the present application, the communication unit 620 is configured to:

if the environment level indicated by the fourth indication information is greater than or equal to a third threshold value, determining the controllable environment as the target environment; and/or if the environment level indicated by the fourth indication information is less than the third threshold value, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes a channel occupancy time COT or a controlled time of the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, where the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; the communication unit 620 is configured to: if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes channel quality information indicating a channel quality of a reverse link from the decompressing side to the compressing side; the communication unit 620 is configured to: if the channel quality is greater than or equal to a fourth threshold, determining the controllable environment as the target environment; and/or if the channel quality is less than the fourth threshold, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the channel quality information comprises at least one of: the received signal strength indication RSSI, the reference signal received power RSRP, the reference signal received quality RSRQ, and the number of listen before talk LBT.

In some embodiments of the present application, the first information includes a channel occupancy time COT or a controlled time of the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; the communication unit 620 is configured to: if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information comprises a frequency band used by a reverse link from the decompressing side to the compressing side; the communication unit 620 is configured to: if the frequency band is a licensed frequency band, determining the controllable environment as the target environment; and/or if the frequency band is an unlicensed frequency band, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes a frequency band used by a reverse link from the decompressing side to the compressing side; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; the communication unit 620 is configured to: if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment; and/or if the frequency band is an authorized frequency band and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the controllable environment as the target environment; and/or if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing side to the compressing side; the communication unit 620 is configured to: if the frequency point is an authorized frequency point, determining the controllable environment as the target environment; and/or if the frequency point is an unauthorized frequency point, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the first information includes a frequency point used by a reverse link from the decompressing end to the compressing end; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end; the communication unit 620 is configured to: if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the controllable environment as the target environment; and/or if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.

In some embodiments of the present application, the obtaining unit 610 is configured to: :

switching the EHC mechanism based on the first information.

In some embodiments of the present application, the obtaining unit 610 is further configured to:

configuration information of the EHC mechanism is obtained.

It is to be understood that apparatus embodiments and method embodiments may correspond to one another and that similar descriptions may refer to method embodiments. Specifically, the decompressing end 600 shown in fig. 12 may correspond to a corresponding main body in executing the method 400 in the embodiment of the present application, and the foregoing and other operations and/or functions of each unit in the decompressing end 600 are respectively for implementing corresponding flows in each method in fig. 10, and are not described again here for brevity.

The communication device of the embodiments of the present application is described above in connection with the drawings from the perspective of functional modules. It should be understood that the functional modules may be implemented by hardware, by instructions in software, or by a combination of hardware and software modules.

Specifically, the steps of the method embodiments in the present application may be implemented by integrated logic circuits of hardware in a processor and/or instructions in the form of software, and the steps of the method disclosed in conjunction with the embodiments in the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.

Alternatively, the software modules may be located in random access memory, flash memory, read only memory, programmable read only memory, electrically erasable programmable memory, registers, and the like, as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps in the above method embodiments in combination with hardware thereof.

For example, the above-mentioned obtaining unit may be implemented by a processor or a transceiver, and the compressing unit or the decompressing unit may be implemented by a processor.

Fig. 13 is a schematic configuration diagram of a communication device 700 according to an embodiment of the present application.

Referring to fig. 13, the communication device 700 may include a processor 710.

From which processor 710 may invoke and execute a computer program to implement the methods of the embodiments of the present application.

With continued reference to fig. 13, the communication device 700 may also include a memory 720.

The memory 720 may be used for storing indication information, and may also be used for storing codes, instructions, etc. executed by the processor 710. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application. The memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.

With continued reference to fig. 13, the communication device 700 may also include a transceiver 730.

The processor 710 may control the transceiver 730 to communicate with other devices, and in particular, may transmit information or data to the other devices or receive information or data transmitted by the other devices. The transceiver 730 may include a transmitter and a receiver. The transceiver 730 may further include an antenna, and the number of antennas may be one or more.

It should be understood that the various components in the communication device 700 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

It should also be understood that the communication device 700 may be a compression end in the embodiment of the present application, and the communication device 700 may implement a corresponding process implemented by the compression end in each method in the embodiment of the present application, that is, the communication device 700 in the embodiment of the present application may correspond to the compression end 500 in the embodiment of the present application, and may correspond to a corresponding main body in executing the method 200 in the embodiment of the present application, and for brevity, no further description is provided here. Similarly, the communication device 700 may be a decompressing end of the embodiment of the present application, and the communication device 700 may implement the corresponding flow implemented by the decompressing end in the methods of the embodiments of the present application. That is to say, the communication device 700 in the embodiment of the present application may correspond to the decompressing end 600 in the embodiment of the present application, and may correspond to a corresponding main body in executing the method 400 according to the embodiment of the present application, and for brevity, no further description is given here.

In addition, the embodiment of the application also provides a chip.

For example, the chip may be an integrated circuit chip having signal processing capabilities and capable of implementing or performing the methods, steps, and logic blocks disclosed in the embodiments of the present application. The chip may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc. Alternatively, the chip may be applied to various communication devices, so that the communication device mounted with the chip can execute the methods, steps and logic blocks disclosed in the embodiments of the present application.

Fig. 14 is a schematic block diagram of a chip 800 according to an embodiment of the present application.

Referring to fig. 14, the chip 800 includes a processor 810.

From which processor 810 may retrieve and execute a computer program to implement the methods of the embodiments of the present application.

With continued reference to fig. 14, the chip 800 may further include a memory 820.

From the memory 820, the processor 810 can call and run a computer program to implement the method in the embodiment of the present application. The memory 820 may be used to store instructions, codes, instructions, etc. that are executed by the processor 810. The memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

With continued reference to fig. 14, the chip 800 may further include an input interface 830.

The processor 810 may control the input interface 830 to communicate with other devices or chips, and specifically, may obtain information or data transmitted by other devices or chips.

With continued reference to fig. 14, the chip 800 may further include an output interface 840.

The processor 810 can control the output interface 840 to communicate with other devices or chips, and in particular, can output information or data to other devices or chips.

It should be understood that the chip 800 may be applied to a compression end in the embodiment of the present application, and the chip may implement a corresponding process implemented by the compression end in each method in the embodiment of the present application, and may also implement a corresponding process implemented by a decompression end in each method in the embodiment of the present application, which is not described herein again for brevity.

It will also be appreciated that the various components in the chip 800 are connected by a bus system that includes a power bus, a control bus, and a status signal bus in addition to a data bus.

The processors referred to above may comprise, but are not limited to:

general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like.

The processor may be configured to implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, eprom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and combines hardware thereof to complete the steps of the method.

The memories referred to above include, but are not limited to:

volatile memory and/or non-volatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), enhanced Synchronous SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DR RAM).

It should be noted that the memory described herein is intended to comprise these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing a computer program. The computer readable storage medium stores one or more programs, the one or more programs comprising instructions, which when executed by a portable electronic device comprising a plurality of application programs, enable the portable electronic device to perform the methods of the illustrated embodiments of methods 200-400.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables a computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

The embodiment of the application also provides a computer program product which comprises a computer program.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program enables a computer to execute a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

The embodiment of the application also provides a computer program. The computer program, when executed by a computer, enables the computer to perform the methods of the embodiments illustrated by methods 200 through 400.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

In addition, an embodiment of the present application further provides a communication system, where the communication system may include the terminal device and the network device mentioned above to form the communication system 100 shown in fig. 1, and details are not described herein for brevity. It should be noted that the term "system" or the like in this document may also be referred to as "network management architecture" or "network system" or the like.

It is also to be understood that the terminology used in the embodiments of the present application and the appended claims is for the purpose of describing particular embodiments only, and is not intended to be limiting of the embodiments of the present application.

For example, as used in the examples of this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.

If implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: u disk, removable hard disk, read only memory, random access memory, magnetic or optical disk, etc. for storing program codes.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways.

For example, the division of a unit or a module or a component in the above-described device embodiments is only one logical function division, and there may be other divisions in actual implementation, for example, a plurality of units or modules or components may be combined or may be integrated into another system, or some units or modules or components may be omitted, or not executed.

Also for example, the units/modules/components described above as separate/display components may or may not be physically separate, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the units/modules/components can be selected according to actual needs to achieve the purposes of the embodiments of the present application.

Finally, it should be noted that the above shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The above description is only a specific implementation of the embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the embodiments of the present application, and all the changes or substitutions should be covered by the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless communication, comprising:

acquiring first information, wherein the first information is used for determining a frame header compression EHC mechanism of an Ethernet frame;

compressing a header of the Ethernet frame and/or transmitting the Ethernet frame based on the EHC mechanism.
The method of claim 1, wherein the EHC mechanism comprises at least one of:

a mechanism to perform state transitions based on the feedback information;

a mechanism to not perform state transitions based on the feedback information;

a mechanism that sends a complete packet or a compressed packet based on feedback information, the complete packet including first frame header information of the ethernet frame, the compressed packet not including the first frame header information;

a mechanism to not send the full packet or the compressed packet based on the feedback information;

a mechanism for performing state transition based on a plurality of sending conditions of the same type of packets; and

a mechanism to send the complete packet or the compressed packet based on a plurality of sending cases of the same type of packet.
The method of claim 1 or 2, wherein the EHC mechanism comprises a first mechanism and/or a second mechanism;

the first mechanism is:

a compression end sends a complete packet or a compressed packet to a decompression end after receiving feedback information sent by the decompression end, wherein the feedback information is used for indicating whether the decompression end successfully establishes context information corresponding to a context identifier, the complete packet comprises first frame header information of the Ethernet frame, and the compressed packet does not comprise the first frame header information;

the second mechanism refers to:

and the compression end continuously sends a plurality of complete packets to the decompression end and then sends the compressed packets to the decompression end, and/or the compression end continuously sends the complete packets to the decompression end after a plurality of compressed packets are generated to the decompression end.
The method of claim 3, further comprising:

determining the first mechanism or the second mechanism as the EHC mechanism based on the first information.
The method according to claim 4, wherein the first information comprises first indication information indicating the first mechanism or the second mechanism;

wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

determining the first mechanism or the second mechanism indicated by the first indication information as the EHC mechanism.
The method according to claim 4, wherein the first information comprises second indication information indicating a context level of a network environment between the compression side and the decompression side.
The method of claim 6, wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

determining the first mechanism as the EHC mechanism if the environmental level indicated by the second indication information is less than a first threshold; and/or

Determining the second mechanism as the EHC mechanism if the environmental level indicated by the second indication information is greater than or equal to the first threshold.
The method of claim 6, wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

determining the first mechanism as the EHC mechanism if the environmental level indicated by the second indication information is greater than or equal to a first threshold; and/or

Determining the second mechanism as the EHC mechanism if the environmental level indicated by the second indication information is less than the first threshold.
The method according to claim 7 or 8, wherein the first threshold is a predefined threshold, or the first threshold is a preconfigured threshold, or the first threshold is a dynamically configured threshold.
The method according to claim 7 or 8, wherein the first information comprises the first threshold.
The method according to claim 4, wherein the first information comprises a channel occupancy time COT or a controlled time of the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end;

wherein the determining, based on the first information, the first mechanism or the second mechanism to be the EHC mechanism comprises:

if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the first mechanism as the EHC mechanism; and/or

And if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the second mechanism as the EHC mechanism.
The method of claim 4, wherein the first information comprises channel quality information indicating channel quality of a reverse link from the decompressing end to the compressing end;

wherein the determining, based on the first information, the first mechanism or the second mechanism to be the EHC mechanism comprises:

determining the first mechanism as the EHC mechanism if the channel quality is greater than or equal to a second threshold; and/or

Determining the second mechanism as the EHC mechanism if the channel quality is less than the second threshold.
The method of claim 12, wherein the second threshold is a predefined threshold, or wherein the second threshold is a preconfigured threshold, or wherein the second threshold is a dynamically configured threshold.
The method of claim 12, wherein the first information comprises the second threshold.
The method according to any of claims 12 to 14, wherein the channel quality information comprises at least one of the following information: the received signal strength indication RSSI, the reference signal received power RSRP, the reference signal received quality RSRQ, and the number of listen before talk, LBT.
The method of claim 4, wherein the first information comprises a frequency band used by a reverse link from the decompressing end to the compressing end;

wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

determining the first mechanism as the EHC mechanism if the frequency band is a licensed frequency band; and/or

Determining the second mechanism as the EHC mechanism if the frequency band is an unlicensed frequency band.
The method of claim 4, wherein the first information comprises a frequency band used by a reverse link from the decompressing end to the compressing end; the first information further includes a channel occupancy time COT or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time usable by a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end;

wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the first mechanism as the EHC mechanism; and/or

If the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is outside the COT or the controlled time, determining the second mechanism as the EHC mechanism; and/or

If the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the first mechanism as the EHC mechanism; and/or

And if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the second mechanism as the EHC mechanism.
The method according to claim 4, wherein the first information includes frequency points used by a reverse link from the decompressing end to the compressing end;

wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

if the frequency point is an authorized frequency point, determining the first mechanism as the EHC mechanism; and/or

And if the frequency point is an unauthorized frequency point, determining the second mechanism as the EHC mechanism.
The method according to claim 4, wherein the first information includes frequency points used by a reverse link from the decompressing end to the compressing end; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end;

wherein the determining, based on the first information, the first mechanism or the second mechanism to be the EHC mechanism comprises:

if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the first mechanism as the EHC mechanism; and/or

If the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the second mechanism as the EHC mechanism; and/or

If the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the first mechanism as the EHC mechanism; and/or

And if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the second mechanism as the EHC mechanism.
The method of claim 4, wherein the first information comprises information for determining or indicating a target context for representing a transmission or interference context between the compressing end and the decompressing end;

wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

determining a mechanism corresponding to the target environment as the EHC mechanism based on a first mapping relationship, the first mapping relationship including a correspondence relationship of at least one environment and at least one mechanism, the at least one environment including the target environment.
The method of claim 20, wherein the first mapping relationship is predefined information, or wherein the first mapping relationship is preconfigured information, or wherein the first mapping relationship is dynamically configured information.
The method of claim 20, wherein the first information comprises the first mapping relationship.
The method of any one of claims 20 to 22, wherein the at least one environment corresponds to at least one environment level identifier.
The method of claim 23, wherein the at least one environmental level is at least two environmental levels.
The method of any one of claims 20 to 24, wherein the at least one environment comprises at least one type of environment.
The method of claim 25, wherein the at least one type of environment comprises a controllable environment and/or a non-controllable environment;

the controllable environment refers to: a transmission or interference environment between the compression end and the decompression end satisfies at least one of:

the network systems of the compression end and the decompression end do not have different systems;

a controlled different system or controlled time exists in a network system to which the compression end and the decompression end belong, the controlled different system corresponds to or has controlled time, the controlled time is time available for a target link or time available for receiving/transmitting the feedback information, and the target link comprises a reverse link from the compression end to the decompression end or a link from the decompression end to the compression end; and

the load or the interference of a feedback link between the compression end and the decompression end is less than a preset threshold value;

the non-controllable environment refers to: a transmission or interference environment between the compression end and the decompression end satisfies at least one of the following:

different systems exist in the network systems to which the compression end and the decompression end belong;

an uncontrolled inter-system exists in a network system to which the compression end and the decompression end belong; and

and the network system to which the compression end and the decompression end belong does not have a different system, and the load or the interference of a feedback link between the compression end and the decompression end is greater than or equal to a preset threshold value.
The method of claim 26, wherein the disparate system comprises a WIFI system.
The method according to claim 26 or 27, wherein the mechanism corresponding to the controllable environment is the first mechanism, and the mechanism corresponding to the non-controllable environment is the second mechanism;

wherein the determining the mechanism corresponding to the target environment as the EHC mechanism comprises:

determining the first mechanism as the EHC mechanism if the target environment is the controllable environment; and/or

Determining the second mechanism as the EHC mechanism if the target environment is the uncontrolled environment.
The method of claim 26 or 27, further comprising:

determining the controllable environment or the non-controllable environment as the target environment based on the first information.
The method according to claim 29, wherein the first information comprises third indication information indicating a transmission or interference environment between the compressing end and the decompressing end;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

and determining the environment indicated by the third indication information as the target environment.
The method according to claim 29, wherein the first information comprises fourth indication information indicating a context level of a network environment between the compression side and the decompression side.
The method of claim 31, wherein determining the controllable environment or the non-controllable environment as the target environment based on the first information comprises:

if the environment level indicated by the fourth indication information is smaller than a third threshold value, determining the controllable environment as the target environment; and/or

And if the environment level indicated by the fourth indication information is greater than or equal to the third threshold value, determining the uncontrollable environment as the target environment.
The method of claim 31, wherein determining the controllable environment or the non-controllable environment as the target environment based on the first information comprises:

if the environment level indicated by the fourth indication information is greater than or equal to a third threshold value, determining the controllable environment as the target environment; and/or

And if the environment level indicated by the fourth indication information is smaller than the third threshold value, determining the uncontrollable environment as the target environment.
The method according to claim 32 or 33, wherein the third threshold is a predefined threshold, or the third threshold is a preconfigured threshold, or the third threshold is a dynamically configured threshold.
The method of claim 32 or 33, wherein the first information comprises the third threshold.
The method according to claim 29, wherein the first information comprises a channel occupancy time COT or a controlled time of the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or

And if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.
The method of claim 29, wherein the first information comprises channel quality information indicating a channel quality of a reverse link from the decompressing end to the compressing end;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

if the channel quality is greater than or equal to a fourth threshold, determining the controllable environment as the target environment; and/or

And if the channel quality is less than the fourth threshold, determining the uncontrollable environment as the target environment.
The method of claim 37, wherein the fourth threshold is a predefined threshold, or wherein the fourth threshold is a preconfigured threshold, or wherein the fourth threshold is a dynamically configured threshold.
The method of claim 37, wherein the first information comprises the fourth threshold.
The method according to any of claims 37-39, wherein said channel quality information comprises at least one of: the received signal strength indication RSSI, the reference signal received power RSRP, the reference signal received quality RSRQ, and the number of listen before talk, LBT.
The method according to claim 40, wherein the first information comprises a channel occupancy time COT or a controlled time of the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or

And if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.
The method of claim 29, wherein the first information comprises a frequency band used by a reverse link from the decompressing side to the compressing side;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

if the frequency band is an authorized frequency band, determining the controllable environment as the target environment; and/or

And if the frequency band is an unauthorized frequency band, determining the uncontrollable environment as the target environment.
The method according to claim 29, wherein the first information comprises a frequency band used by a reverse link from the decompressing end to the compressing end; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or

If the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment; and/or

If the frequency band is an authorized frequency band and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the controllable environment as the target environment; and/or

And if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.
The method according to claim 29, wherein the first information includes frequency points used by a reverse link from the decompressing end to the compressing end;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

if the frequency point is an authorized frequency point, determining the controllable environment as the target environment; and/or

And if the frequency point is an unauthorized frequency point, determining the uncontrollable environment as the target environment.
The method according to claim 29, wherein the first information includes frequency points used by a reverse link from the decompressing end to the compressing end; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or

If the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment; and/or

If the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the controllable environment as the target environment; and/or

And if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.
The method according to any one of claims 1 to 45, wherein the first information comprises at least one of:

carrier, public land mobile network PLMN, cell access group CAG information, independent non-public network SNPN information, and geographical area information.
The method according to any of claims 1 to 46, wherein the first information is carried in a broadcast channel, radio resource control, RRC, media Access control, control element, MAC CE, or Downlink control information, DCI.
The method according to any one of claims 1 to 47, wherein the obtaining the first information comprises:

and if the protocol data unit PDU session type between the compression end and the decompression end is an Ethernet frame, acquiring the first information.
The method of any one of claims 1 to 48, further comprising:

switching the EHC mechanism based on the first information.
The method of any one of claims 1 to 49, further comprising:

and sending fifth indication information to the opposite terminal, wherein the fifth indication information is used for indicating the mechanism for compressing the frame header of the Ethernet frame.
The method of claim 50, wherein the fifth indication information is carried in dedicated signaling.
The method of any one of claims 1 to 51, further comprising:

configuration information of the EHC mechanism is obtained.
A method of wireless communication, comprising:

acquiring first information, wherein the first information is used for determining a frame header compression EHC mechanism of an Ethernet frame;

decompressing a header of the Ethernet frame and/or receiving the Ethernet frame based on the EHC mechanism.
The method of claim 53, wherein the EHC mechanism comprises at least one of:

a mechanism to perform state transitions based on the feedback information;

a mechanism to not perform state transitions based on the feedback information;

a mechanism that sends a complete packet or a compressed packet based on feedback information, the complete packet including first frame header information of the ethernet frame, the compressed packet not including the first frame header information; and

a mechanism to not send the full packet or the compressed packet based on the feedback information;

a mechanism for performing state transition based on a plurality of sending conditions of the same type of packets; and

a mechanism to send the complete packet or the compressed packet based on a plurality of sending cases of the same type of packet.
The method of claim 53 or 54, wherein the EHC mechanisms comprise a first mechanism and/or a second mechanism;

the first mechanism is:

a compression end sends a complete packet or a compressed packet to a decompression end after receiving feedback information sent by the decompression end, wherein the feedback information is used for indicating whether the decompression end successfully establishes context information corresponding to a context identifier, the complete packet comprises first frame header information of the Ethernet frame, and the compressed packet does not comprise the first frame header information;

the second mechanism refers to:

and the compression end continuously sends a plurality of complete packets to the decompression end and then sends the compressed packets to the decompression end, and/or the compression end continuously sends the complete packets to the decompression end after a plurality of compressed packets are generated to the decompression end.
The method of claim 55, further comprising:

determining the first mechanism or the second mechanism as the EHC mechanism based on the first information.
The method according to claim 56, wherein the first information comprises first indication information indicating the first mechanism or the second mechanism;

wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

determining the first mechanism or the second mechanism indicated by the first indication information as the EHC mechanism.
The method according to claim 56, wherein said first information comprises second indication information indicating an environment level of a network environment between said compressing side and said decompressing side.
The method of claim 58, wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

determining the first mechanism as the EHC mechanism if the environmental level indicated by the second indication information is less than a first threshold; and/or

Determining the second mechanism as the EHC mechanism if the environmental level indicated by the second indication information is greater than or equal to the first threshold.
The method of claim 58, wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

determining the first mechanism as the EHC mechanism if the environmental level indicated by the second indication information is greater than or equal to a first threshold; and/or

Determining the second mechanism as the EHC mechanism if the environmental level indicated by the second indication information is less than the first threshold.
The method of claim 59 or 60, wherein the first threshold is a predefined threshold, or the first threshold is a preconfigured threshold, or the first threshold is a dynamically configured threshold.
The method of claim 59 or 60, wherein the first information comprises the first threshold.
The method according to claim 56, wherein said first information comprises a channel occupancy time COT or a controlled time at said decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, where the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end;

wherein the determining, based on the first information, the first mechanism or the second mechanism to be the EHC mechanism comprises:

if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the first mechanism as the EHC mechanism; and/or

And if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the second mechanism as the EHC mechanism.
The method according to claim 56, wherein said first information comprises channel quality information indicating channel quality of a reverse link from said decompressing end to said compressing end;

wherein the determining, based on the first information, the first mechanism or the second mechanism to be the EHC mechanism comprises:

determining the first mechanism as the EHC mechanism if the channel quality is greater than or equal to a second threshold; and/or

Determining the second mechanism as the EHC mechanism if the channel quality is less than the second threshold.
The method of claim 64, wherein the second threshold is a predefined threshold, or wherein the second threshold is a preconfigured threshold, or wherein the second threshold is a dynamically configured threshold.
The method of claim 64, wherein the first information comprises the second threshold.
The method according to any of claims 64-66, wherein said channel quality information comprises at least one of: the received signal strength indication RSSI, the reference signal received power RSRP, the reference signal received quality RSRQ, and the number of listen before talk LBT.
The method according to claim 56, wherein said first information comprises a frequency band used by a reverse link from said decompressing end to said compressing end;

wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

determining the first mechanism as the EHC mechanism if the frequency band is a licensed frequency band; and/or

Determining the second mechanism as the EHC mechanism if the frequency band is an unlicensed frequency band.
The method according to claim 56, wherein said first information comprises a frequency band used by a reverse link from said decompressing end to said compressing end; the first information further includes a channel occupancy time COT or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time usable by a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end;

wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the first mechanism as the EHC mechanism; and/or

If the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the second mechanism as the EHC mechanism; and/or

If the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the first mechanism as the EHC mechanism; and/or

And if the frequency band is a licensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the second mechanism as the EHC mechanism.
The method according to claim 56, wherein said first information comprises frequency points used by a reverse link from said decompressing end to said compressing end;

wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

if the frequency point is an authorized frequency point, determining the first mechanism as the EHC mechanism; and/or

And if the frequency point is an unauthorized frequency point, determining the second mechanism as the EHC mechanism.
The method according to claim 56, wherein said first information comprises frequency points used by a reverse link from said decompressing end to said compressing end; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end;

wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the first mechanism as the EHC mechanism; and/or

If the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is outside the COT or the controlled time, determining the second mechanism as the EHC mechanism; and/or

If the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the first mechanism as the EHC mechanism; and/or

And if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the second mechanism as the EHC mechanism.
The method according to claim 56, wherein the first information comprises information for determining or indicating a target context for representing a transmission or interference context between the compressing end and the decompressing end;

wherein the determining the first mechanism or the second mechanism as the EHC mechanism based on the first information comprises:

determining a mechanism corresponding to the target environment as the EHC mechanism based on a first mapping, the first mapping comprising a correspondence of at least one environment and at least one mechanism, the at least one environment comprising the target environment.
The method of claim 72, wherein the first mapping relationship is predefined information, or wherein the first mapping relationship is preconfigured information, or wherein the first mapping relationship is dynamically configured information.
The method of claim 72, wherein the first information comprises the first mapping relationship.
The method of any one of claims 72 to 74, wherein said at least one environment corresponds to at least one environment class identifier.
The method of claim 75, wherein said at least one environmental level is at least two environmental levels.
The method of any one of claims 72 to 76, wherein the at least one environment comprises at least one type of environment.
The method of claim 77, wherein the at least one type of environment comprises a controllable environment and/or a non-controllable environment;

the controllable environment refers to: a transmission or interference environment between the compression end and the decompression end satisfies at least one of:

the network systems of the compression end and the decompression end do not have different systems;

a controlled inter-system or controlled time exists in a network system to which the compression end and the decompression end belong, the controlled inter-system corresponds to or has controlled time, the controlled time is time available for a target link or time for receiving/transmitting the feedback information, and the target link includes a reverse link from the compression end to the decompression end or a link from the decompression end to the compression end; and

the load or interference of a feedback link between the compression end and the decompression end is smaller than a preset threshold value;

the non-controllable environment refers to: a transmission or interference environment between the compression end and the decompression end satisfies at least one of:

different systems exist in the network systems to which the compression end and the decompression end belong;

an uncontrolled heterogeneous system exists in the network system to which the compression end and the decompression end belong; and

and the network system to which the compression end and the decompression end belong does not have a different system, and the load or the interference of a feedback link between the compression end and the decompression end is greater than or equal to a preset threshold value.
The method of claim 78, wherein the disparate system comprises a WIFI system.
The method of claim 78 or 79, wherein the mechanism corresponding to the controllable environment is the first mechanism and the mechanism corresponding to the non-controllable environment is the second mechanism;

wherein the determining the mechanism corresponding to the target environment as the EHC mechanism comprises:

determining the first mechanism as the EHC mechanism if the target environment is the controllable environment; and/or

Determining the second mechanism as the EHC mechanism if the target environment is the uncontrolled environment.
The method of claim 78 or claim 79, further comprising:

determining the controllable environment or the non-controllable environment as the target environment based on the first information.
The method according to claim 81, wherein the first information comprises a third indication information indicating a transmission or interference environment between the compressing end and the decompressing end;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

and determining the environment indicated by the third indication information as the target environment.
The method according to claim 81, wherein the first information comprises a fourth indication information indicating a context level of a network environment between the compression side and the decompression side.
The method of claim 83, wherein determining the controllable environment or the non-controllable environment as the target environment based on the first information comprises:

if the environment level indicated by the fourth indication information is smaller than a third threshold value, determining the controllable environment as the target environment; and/or

And if the environment level indicated by the fourth indication information is greater than or equal to the third threshold value, determining the uncontrollable environment as the target environment.
The method of claim 83, wherein determining the controllable environment or the non-controllable environment as the target environment based on the first information comprises:

if the environment level indicated by the fourth indication information is greater than or equal to a third threshold value, determining the controllable environment as the target environment; and/or

And if the environment level indicated by the fourth indication information is less than the third threshold value, determining the uncontrollable environment as the target environment.
The method of claim 84 or 85, wherein the third threshold is a predefined threshold, or wherein the third threshold is a preconfigured threshold, or wherein the third threshold is a dynamically configured threshold.
The method of claim 84 or 85, wherein the first information comprises the third threshold.
The method of claim 87, wherein the first information comprises a channel occupancy time COT or a controlled time at the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or

And if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.
The method of claim 81, wherein the first information comprises channel quality information indicating channel quality of a reverse link from the decompressing side to the compressing side;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

if the channel quality is greater than or equal to a fourth threshold, determining the controllable environment as the target environment; and/or

And if the channel quality is less than the fourth threshold, determining the uncontrollable environment as the target environment.
The method of claim 89, wherein the fourth threshold is a predefined threshold, or wherein the fourth threshold is a preconfigured threshold, or wherein the fourth threshold is a dynamically configured threshold.
The method of claim 89, wherein said first information comprises said fourth threshold.
The method according to any of claims 89 to 91, wherein said channel quality information comprises at least one of: the received signal strength indication RSSI, the reference signal received power RSRP, the reference signal received quality RSRQ, and the number of listen before talk, LBT.
The method according to claim 81, wherein the first information comprises a channel occupancy time, COT, or a controlled time at the decompressing end; or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

if the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or

And if the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.
The method according to claim 81, wherein said first information comprises a frequency band used by a reverse link from said decompressing end to said compressing end;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

if the frequency band is an authorized frequency band, determining the controllable environment as the target environment; and/or

And if the frequency band is an unauthorized frequency band, determining the uncontrollable environment as the target environment.
The method according to claim 81, wherein the first information comprises a frequency band used by a reverse link from the decompressing end to the compressing end; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

if the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or

If the frequency band is an unlicensed frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment; and/or

If the frequency band is an authorized frequency band and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the controllable environment as the target environment; and/or

And if the frequency band is an authorized frequency band and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.
The method according to claim 81, wherein the first information comprises frequency points used by a reverse link from the decompressing end to the compressing end;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

if the frequency point is an authorized frequency point, determining the controllable environment as the target environment; and/or

And if the frequency point is an unauthorized frequency point, determining the uncontrollable environment as the target environment.
The method of claim 81, wherein the first information comprises frequency points used by a reverse link from the decompressing side to the compressing side; the first information further includes a channel occupancy time, COT, or a controlled time of the decompressing end, or the first information further includes information indicating the COT or the controlled time, where the controlled time is a time available for a target link or a time at which the feedback information can be received/transmitted, and the target link includes a reverse link from the compressing end to the decompressing end or a link from the decompressing end to the compressing end;

wherein the determining the controllable environment or the uncontrollable environment as the target environment based on the first information comprises:

if the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is within the COT or the controlled time, determining the controllable environment as the target environment; and/or

If the frequency point is an unauthorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment; and/or

If the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is located in the COT or the COT, determining the controllable environment as the target environment; and/or

And if the frequency point is an authorized frequency point and the transmission time of the target link or the transmission time of the feedback information is beyond the COT or the controlled time, determining the uncontrollable environment as the target environment.
The method of any one of claims 53 to 97, wherein the first information comprises at least one of:

carrier, public land mobile network PLMN, cell access group CAG information, independent non-public network SNPN information, and geographical area information.
The method according to any of claims 53 to 98, wherein the first information is carried in a broadcast channel, radio resource control, RRC, medium access control element, MAC CE, or downlink control information, DCI.
The method of any one of claims 53 to 99, wherein said obtaining first information comprises:

and if the protocol data unit PDU session type between the compression end and the decompression end is an Ethernet frame, acquiring the first information.
The method of any one of claims 1 to 100, further comprising:

switching the EHC mechanism based on the first information.
The method of any one of claims 1 to 101, further comprising:

and sending fifth indication information to the opposite terminal, wherein the fifth indication information is used for indicating the mechanism for compressing the frame header of the Ethernet frame.
The method of claim 102, wherein the fifth indication information is carried in dedicated signaling.
The method according to any one of claims 1 to 103, further comprising:

configuration information of the EHC mechanism is obtained.
A compression end, comprising:

the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring first information, and the first information is used for determining a frame header compression (EHC) mechanism of an Ethernet frame;

and the communication unit is used for compressing the frame header of the Ethernet frame and/or sending the Ethernet frame based on the EHC mechanism.
A decompression end, comprising:

the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit acquires first information, and the first information is used for determining a frame header compression (EHC) mechanism of an Ethernet frame;

and the communication unit decompresses the frame header of the Ethernet frame and/or receives the Ethernet frame based on the EHC mechanism.
A compression end, comprising:

a processor, a memory for storing a computer program, and a transceiver, the processor for invoking and executing the computer program stored in the memory to perform the method of any of claims 1-52.
A decompression end, comprising:

a processor, a memory for storing a computer program, and a transceiver, the processor for invoking and executing the computer program stored in the memory to perform the method of any of claims 53-104.
A chip, comprising:

a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 52.
A chip, comprising:

a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 53 to 104.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 52.
A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 53 to 104.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 1 to 52.
A computer program product comprising computer program instructions to cause a computer to perform the method of any of claims 53 to 104.
A computer program, characterized in that the computer program causes a computer to execute the method according to any of claims 1-52.
A computer program, characterized in that the computer program causes a computer to perform the method of any of claims 53 to 104.