CN103188146A - Sending and receiving method and device of continuous data package - Google Patents

Abstract

Various embodiments of the present invention provide a method and device for sending and receiving continuous transmission data packets. In a method for sending continuous data packets, the following steps are included: the first station sends a compression request to the second station, and the compression request carries the field information of the flow identifier and the MAC frame header of the subsequent data packet; A compressed response sent by the second station: sending to the second station a first data packet including a complete MAC frame header or a compressed MAC frame header with a flow field, wherein the flow field includes a flow identifier. Various embodiments of the present invention can effectively compress the length of the MAC frame header field of continuous data packets, save unnecessary overhead of continuous data packets, not only improve the utilization efficiency of channel media resources, but also help the sending site to save energy; in addition, flexibly handle changes in The MAC frame header field improves the flexibility of use.

Description

A method and device for sending and receiving continuous data packets

technical field

The invention relates to the communication field, in particular to a method and device for continuously transmitting data packets. the

technical background

IEEE 802.11 technology formulates a general medium access control layer (Medium access control, MAC) for multiple physical layers (Physical layer, referred to as PHY) to standardize the construction of wireless local area networks. Among them, the main task of the media access control layer is to establish addressing and channel access control mechanisms for multiple sites in the same network, making communication between multiple sites possible. the

The communication between sites takes the packet structure as the basic unit, and the packet structure is shown in Figure 1, in which the short training field (Short training field, referred to as STF) and the long training field (Long training field, referred to as LTF ) is the preamble of the data packet, the former is used for packet start detection, automatic gain control (AGC) setting, initial frequency offset estimation and initial time synchronization; the latter is used for channel estimation, accurate frequency offset shift estimation and time synchronization. The signaling field is used to indicate the packet rate and length information of the data packet, etc. The service field is used for synchronization with the descrambler, the data field contains the content of the MAC frame, and the tail and padding are used for tail padding. the

MAC frame generally includes three parts, MAC header (MAC header), variable length frame body (Frame body) and frame check sequence (Frame check sequence, referred to as FCS). The MAC frame header fields in turn include frame control field, duration/ID field, address 1 field, address 2 field, address 3 field, sequence control field, address 4 field, QoS (Quality of service, which means quality of service) control field, HT (High Throughput, which means high throughput) control field. In the MAC frame header field, the first three fields are fields that appear in all MAC frames, and the remaining fields are determined by the parameters of the frame control field. the

In 802.11ah application scenarios, most data packets are small packets of 64 to 128 bytes, but the complete MAC frame header information will occupy up to 36 bytes. For multiple small packets transmitted continuously, the MAC frame header information may be completely The same, such as address information, QoS information or HT information, will cause a great waste of media resources. the

In response to this situation, a prior art proposes to use a Flow ID (Flow ID) to identify the same MAC frame header information of multiple consecutive data packets, such as address information, QoS information or HT information, in a plurality of consecutively transmitted data packets , using a shorter-byte flow identifier to replace the corresponding MAC frame header information can not only save the overhead of media resources, but also help the sending station to save energy. the

FIG. 2 schematically illustrates the transmission process of continuous data packets in the prior art. First, the sending station (STA1) and the receiving station (STA2) exchange frame header control request frames (abbreviated as HC-REQ, corresponding to Header control request) and frame header control response frames (abbreviated as HC-RESP, corresponding to Header control response), Negotiate the MAC frame header information of the continuous packet to identify the flow identifier, and the flow identifier can identify address information (Address1/2/3/4), QoS information or HT information, etc., and the receiving station stores the flow identifier and its identifier in the local storage unit MAC frame header information; secondly, after the flow identification is negotiated between the stations, the sending site sends a compressed data packet carrying the flow identification to the receiving station. Obtain the MAC frame header information of the compressed data packet; finally, the sending station sends a tail frame (TAIL frame) to announce the end of the use of the flow identifier. the

As shown in Figure 3, the compressed format of the continuous data packet, its MAC frame header field only contains frame control information, flow identification information and sequence control information, wherein the length (TBD, to be defined) of the flow identification is less than the length of the complete MAC frame header field The length can effectively save the overhead of media resources during transmission. the

However, the problems of this prior art mainly include: firstly, the information identified by the flow identification negotiated between the stations is all fixed, if information changes in continuous packets, for example, the QoS control field of the packet and the flow identification When the QoS control fields of the identification are different, the flow identification is not available when the current packet is transmitted, and it is necessary to renegotiate the flow identification or send the complete data packet format, and the application of the flow identification lacks flexibility; the second is to end the application of the flow identification. The TAIL/ACK frame will occupy more channel resources; third, the length of the flow identifier is to be defined, and there is still space for compressing the MAC frame header field. the

Contents of the invention

In view of this, in order to solve the above problems, the present invention proposes a solution to effectively solve the flexibility of continuous packet transmission. the

In a first aspect, an embodiment of the present invention provides a method for sending continuous data packets. The method includes: the first station sends a compression request to the second station, and the compression request carries the flow identifier and the field information of the media access control MAC frame header of the subsequent data packet; receives the compressed response sent by the second station; sends the compression request to the second station Sending a first data packet including a complete MAC header or a compressed MAC header with a flow field, wherein the flow field includes a flow identifier. the

In a second aspect, the present invention provides a method for receiving consecutive data packets at a first station. The method includes: the first station sends a first data packet to the second station, the first data packet carrying complete indication information and/or first compression negotiation information; receiving a response message in which the second station feeds back the first data packet, Obtain the second compression negotiation information in the response message. the

In a third aspect, an embodiment of the present invention provides a website. The station includes: a first sending unit, which sends a compression request to the second station, and the compression request carries a flow identifier and field information of a MAC frame header of a subsequent data packet; a receiving unit, which receives a compressed response sent by the second station ; The second sending unit sends to the second station the first data packet that includes a complete MAC frame header or a compressed MAC frame header with a flow field, wherein the flow field includes a flow identifier. the

In a fourth aspect, an embodiment of the present invention provides a website. The station includes: a sending unit, which sends a first data packet to the second station, the first data packet carrying complete indication information and/or first compression negotiation information; a receiving unit, which receives the first data packet fed back by the second station A response message, to obtain the second compression negotiation information in the response message. the

Various embodiments of the present invention can effectively compress the length of the MAC frame header field of continuous data packets, save unnecessary overhead of continuous data packets, not only improve the utilization efficiency of channel media resources, but also help the sending site to save energy; in addition, flexibly handle changes in The MAC frame header field improves the flexibility of use. the

Description of drawings

Fig. 1 is the packet structure of 802.11;

Fig. 2 illustrates a kind of transmission process of the continuous data packet of prior art;

Fig. 3 is the compressed format of prior art continuous data packet;

Figure 4 illustrates the WLAN service set;

Fig. 5 is the flow chart of the transmission of data packets between the stations according to the first embodiment of the present invention;

Fig. 6 has illustrated the data packet format that comprises compressed MAC frame header among the embodiment one;

Fig. 7 is the transmission schematic diagram of the continuous data packet of embodiment one;

Fig. 8 is according to the transmission flowchart of the data packet between the stations of the second embodiment of the present invention;

Fig. 9 has illustrated the data packet format that comprises compressed MAC frame header among the embodiment two;

Fig. 10 is the transmission schematic diagram of the continuous data packet of embodiment two;

Fig. 11 is a schematic flow diagram of sending continuous data packets according to Embodiment 3 of the present invention;

Fig. 12 is a schematic flow diagram of receiving continuous data packets according to Embodiment 3 of the present invention;

Fig. 13 has illustrated the data packet format that comprises the compressed MAC frame header among the embodiment three;

Fig. 14 is a schematic diagram of the transmission of continuous data packets in the third embodiment;

Fig. 15 is a schematic flow diagram of sending continuous data packets according to Embodiment 4 of the present invention;

Fig. 16 is a schematic flow diagram of receiving continuous data packets according to Embodiment 4 of the present invention;

Fig. 17 has illustrated the data packet format that comprises compressed MAC frame header among the embodiment four;

Figure 18 is a schematic diagram of the transmission of continuous data packets in Embodiment 4;

Fig. 19 is a schematic structural diagram of a site according to an embodiment of the present invention;

Fig. 20 is a schematic structural diagram of a site according to an embodiment of the present invention. the

Detailed ways

FIG. 4 illustrates various service sets of a wireless local area network (WLAN: Wireless local area network). Among them, the basic service set (BSS: Basic service set) is composed of STAs within a certain coverage area and having some kind of association. BSS2 and BSS3 shown in Figure 4 are such basic service sets. In the BSS network, the central station with a full-time management BSS is called an access point AP (Access point), and other stations STA in the network are associated with it. Multiple BSS networks are connected to each other through a distributed system (DS: Distribution system) to immediately form an extended service set (ESS: Extended service set). In the absence of an AP, STAs at stations can also directly communicate with each other through an ad hoc network. This network is an independent basic service set (IBSS: Independent basic service set), such as BSS1. the

The following will take stations STA1 and STA2 as examples to introduce the transmission of data packets between stations in various embodiments of the present invention. It should be pointed out that the embodiments are not only equally applicable to the transmission of data packets between other stations, but also applicable to the transmission of data packets between other types of stations other than those shown in FIG. 4 . the

Embodiment one

This embodiment relates to a method for transmitting continuous packets. By setting the flow compression bit and the flow field in the data packet to indicate whether the packet is transmitted in the format of flow identification compression, indicating whether the multiple MAC frame header fields of the packet are the same as the MAC frame header field information identified by the flow identification, the design is designed A scheme for improving the application flexibility of flow identification. the

Fig. 5 is a flow chart of data packet transmission between stations according to Embodiment 1 of the present invention. the

As shown in Figure 5, in step S500, the sending station STA1 sends a compression request message to the receiving station STA2, and the compression request message may be but not limited to a frame header control request frame (HC-REQ frame), which carries a continuous data packet The label-flow identifier Flow ID and the same MAC frame header field information of the continuous data packets identified by the flow identifier. the

The MAC frame header field information may be one of address field information (address 1, address 2, address 3, address 4), QoS control field information or HT control information or any combination thereof. the

In step S501, the receiving station STA2 receives the compression request message, locally stores the flow identifier Flow ID and the MAC frame header field information marked by the flow identifier, and sends a compression response message to the sending station STA1, indicating the flow identifier If the negotiation is successful, the compressed response message may be but not limited to a frame header control response frame (HC-RESP frame). the

In step S502, the sending station STA1 receives the compressed response message, locally saves the negotiated flow identifier Flow ID and the MAC frame header field marked by the flow identifier, and the flow identifier negotiation step is completed. the

In step S503, the sending station STA1 determines whether to end the use of the Flow ID, if it is determined to end the use of the flow ID, then execute step S514, otherwise execute step S504. the

In step S504, the sending site STA1 determines whether the MAC frame header field of the data packet can be replaced by a flow identifier, if it is determined that the MAC frame header field of the data packet can be replaced by a flow identifier, then perform step S505; otherwise perform step S506;

In step S505, the sending station STA1 sets the stream compression bit of the signaling field in the data packet to 1, and the data packet carries a compressed MAC frame header including a stream field; the stream field includes a stream identifier. If the stream compression bit is 1, it indicates that the data packet contains a compressed MAC frame header, and if it is 0, it indicates that the data packet contains a complete MAC frame header. the

It should be noted that in this specification, a certain indicating bit being 1 means that the indicating bit is valid, and an indicating bit being 0 means that the indicating bit is invalid, unless otherwise specified. the

In an example, the flow field not only includes a flow identifier, but also includes a time domain/ID field indicator bit, an address 3 field indicator bit, an address 4 field indicator bit, a QoS control field indicator bit, or an HT control field indicator bit. or any combination of them. the

(1-1), if the data packet needs the time domain/ID field indication, set the time domain/ID field indication bit as 1, the time domain/ID field appears in the compressed MAC frame header, set the corresponding parameters; otherwise set the time domain The /ID field indication bit is 0, and the default time domain /ID field in the compressed MAC frame header. the

(1-2), if the frame control field of the data packet indicates that there is an address 3 field, and the address 3 field information is different from the address 3 field information marked by the flow identifier, the address 3 field indication bit is set to 1, and the compressed MAC frame header The address 3 field appears in , indicating that the receiving station obtains the address 3 field information from the compressed MAC frame header; otherwise, the address 3 field indication bit is set to 0, and the address 3 field is defaulted in the compressed MAC frame header. the

(1-3), if the frame control field of the data packet indicates that there is an address 4 field, and the address 4 field information is different from the address 4 field information marked by the flow identifier, set the address 4 field indication bit to 1, and compress the MAC frame header The address 4 field appears in , indicating that the receiving station obtains the address 4 field information from the compressed MAC frame header; otherwise, the address 4 field indication bit is set to 0, and the address 4 field is defaulted in the compressed MAC frame header. the

(1-4), if the frame control field of the data packet indicates that there is a QoS control field, and the QoS control field information is different from the QoS control field information marked by the flow identifier, set the QoS control field indication bit to 1, and compress the MAC frame header The QoS control field appears in , indicating that the receiving station obtains the QoS control field information from the compressed MAC frame header; otherwise, the QoS control field indication bit is set to 0, and the QoS control field is defaulted in the compressed MAC frame header. the

(1-5), if the frame control field of the data packet indicates that there is an HT control field, and the HT control field information is different from the HT control field information marked by the flow identifier, the HT control field indication bit is set to 1, and the MAC frame header is compressed The HT control field appears in , indicating that the receiving station obtains the HT control field information from the compressed MAC frame header; otherwise, the HT control field indication bit is set to 0, and the HT control field is defaulted in the compressed MAC frame header. the

Fig. 6 illustrates a data packet format carrying a compressed MAC frame header. In addition to including the conventional short training field, long training field, service field, and trailer and padding fields, the data packet introduces stream compression bits in the signaling field. At the same time, the data packet introduces the flow field in the data field, the flow field includes the flow identifier, and the time domain/ID field indicator bit, the address 3 field indicator bit, the address 4 field indicator bit, the QoS control field indicator bit, and the HT control field indicator, etc. As can be seen from Figure 6, since the frame control field of the packet indicates that there is a QoS control field, and the QoS control field is different from the QoS control field information marked by the flow identifier, the QoS control field indication bit in the flow field is 1, and in In addition to the frame control, flow (Flow) field, and sequence control field in the compressed MAC frame header, the corresponding QoS control field appears. Compared with the complete MAC frame header, the length is significantly reduced. the

It should be pointed out that although FIG. 6 shows the specific position of the stream compression bit, the stream compression bit can be set in other parts than the signaling field, such as the frame control field. the

In step S506, the sending station STA1 sets the stream compression bit of the signaling field in the data packet to 0, indicating that the data packet carries a complete MAC frame header, and the data packet includes a complete MAC frame header. the

In step S507, the sending station STA1 sends the data packet. the

In step S508, the receiving station STA2 receives the data packet. the

In step S509, the receiving station STA2 judges whether the stream compression bit of the signaling field in the data packet is valid, and if the stream compression bit of the signaling field in the data packet is valid, execute step S510, otherwise execute step S511. the

In step S510, the receiving station STA2 obtains the flow field information in the MAC frame header field and the flow identifier therein; according to the flow identifier, it searches the default MAC frame header field information of the packet from the local storage unit. the

In addition, according to one or any combination of the time domain/ID field indicator bit, address 3 field indicator bit, address 4 field indicator bit, QoS control field indicator bit or HT control field indicator bit in the flow field, obtain the data packet Complete MAC frame header field information. the

(2-1), if the time domain/ID field indication bit is 1, then obtain the time domain/ID field information of the data packet from the time domain/ID field in the compressed MAC frame header, otherwise do not obtain the time domain/ID field information . the

(2-2), if the address 3 field indication bit is 1, then obtain the address 3 information of the data packet from the address 3 field in the compressed MAC frame header; otherwise obtain the address 3 information of the data packet from the local storage unit. the

(2-3), if the address 4 field indication bit is 1, then obtain the address 4 information of the data packet from the address 4 field in the compressed MAC frame header; otherwise obtain the address 4 information of the data packet from the local storage unit. the

(2-4), if the QoS control field indication bit is 1, then obtain the QoS control information of the data packet from the QoS control field in the compressed MAC frame header; otherwise obtain the QoS control information of the data packet from the local storage unit. the

(2-5), if the HT control field indication bit is 1, then obtain the HT control information of the data packet from the HT control field in the compressed MAC frame header; otherwise obtain the HT control information of the data packet from the local storage unit. the

Through the above-mentioned field indication bits, the embodiments of the present invention can flexibly handle changing MAC frame header fields and improve the flexibility of use. the

In step S511 , the receiving station STA2 acquires field information of the complete MAC frame header of the data packet from the complete MAC frame header. the

In step S512, the receiving station STA2 feeds back a data packet response message to the sending station. the

In step S513, the sending station STA1 receives the response message of the data packet. the

In step S514, the sending station STA1 sends a stream end message to the receiving station STA2. the

In step S515, the receiving station STA2 receives the end-of-flow message, deletes the flow identification stored in the local storage unit and the MAC frame header field information of its mark, and feeds back the end-of-flow response message to the sending station STA1;

In step S516, the sending station STA1 receives the stream end response message, and deletes the stream identifier and the MAC frame header field information stored in the local storage unit. the

Fig. 7 is a schematic diagram of continuous data packets in Embodiment 1. As shown in FIG. 7 , the sending station STA1 sends an HC-REQ request; the receiving station STA2 responds with HC-RESP, and saves the flow identifier and the marked MAC frame header field information. After receiving the HC-RESP response, the sending station STA1 successively sends data packets DATA1; DATA2 (QoS=1); . . . ; DATA3. The receiving station STA2 responds with an ACK. Finally, the sending station STA1 sends a TAIL frame; the receiving station STA2 responds with an ACK response, and at the same time deletes the flow identifier and the marked MAC frame header field. the

Example two

This embodiment relates to a method for transmitting continuous packets. By setting the flow compression bit and the flow field in the data packet, it indicates whether the packet is transmitted in the compressed format of the flow identifier, indicates whether the multiple MAC frame header fields of the packet are the same as the field information identified by the flow identifier, and indicates that the packet is successfully transmitted Whether to continue to use the flow identification after the end, a scheme to improve the flexibility of the application of the flow identification is designed. The difference from the first embodiment is that the second embodiment uses the stream end bit in the stream field to replace the stream end frame. the

Fig. 8 is a flow chart of data packet transmission between stations according to Embodiment 2 of the present invention. the

As shown in Figure 8, in step S800, the sending station STA1 sends a compression request message to the receiving station STA2, and the compression request message may be but not limited to a frame header control request frame (HC-REQ frame), carrying information belonging to continuous data packets Label-flow identifier Flow ID and the same MAC frame header field information of consecutive data packets identified by the flow identifier. the

The MAC frame header field can be one of address field information (address 1, address 2, address 3, address 4), QoS control field information or HT information or any combination thereof. the

In step S801, the receiving station STA2 receives the compression request message, locally saves the flow identifier carried by it and the MAC frame header field marked by the flow identifier, and feeds back a compression response message to the sending station STA1, and the compression response message may be It is not limited to the frame header control response frame (HC-RESP frame), indicating that the flow identifier negotiation is successful. the

In step S802, the sending station STA1 receives the compressed response message, locally saves the negotiated flow identifier and the MAC frame header field information marked by the flow identifier, and the flow identifier negotiation step is completed. the

In step S803, the sending station STA1 determines whether the MAC frame header field of the data packet can be replaced by a flow identifier; if the MAC frame header field of the data packet can be replaced by a flow identifier, then execute step S804, otherwise execute step S805. the

In step S804, the sending station STA1 sets the stream compression bit of the signaling field in the data packet to 1, and the data packet carries a compressed MAC frame header including a stream field, and the stream field includes a stream identifier. If the stream compression bit is 1, it indicates that the data packet carries a compressed MAC frame header including the flow field, and if it is 0, it indicates that the data packet contains a complete MAC frame header. the

In an example, the flow field not only includes a flow identifier, but also includes a time domain/ID field indication bit, an address 3 field indication bit, an address 4 field indication bit, a QoS control field indication bit, and an HT control field indication bit. or a combination of them. the

(3-1), if the data packet needs the time domain/ID field indication, set the time domain/ID field indication bit to 1, the time domain/ID field appears in the compressed MAC frame header, set the corresponding parameters; otherwise set the time domain The /ID field indication bit is 0, and the default time domain /ID field in the compressed MAC frame header. the

(3-2), if the frame control field of the data packet indicates that there is an address 3 field, and the address 3 field information is different from the address 3 field information marked by the flow identifier, the address 3 field indication bit is set to 1, and the compressed MAC frame header The address 3 field appears in , indicating that the receiving station obtains the address 3 field information from the compressed MAC frame header; otherwise, the address 3 field indication bit is set to 0, and the address 3 field is defaulted in the compressed MAC frame header. the

(3-3), if the frame control field of the data packet indicates that there is an address 4 field, and the address 4 field information is different from the address 4 field information marked by the flow identifier, the address 4 field indication bit is set to 1, and the compressed MAC frame header The address 4 field appears in , indicating that the receiving station obtains the address 4 field information from the compressed MAC frame header; otherwise, the address 4 field indication bit is set to 0, and the address 4 field is defaulted in the compressed MAC frame header. the

(3-4), if the frame control field indication of data packet exists QoS field, and QoS control field information is different from the QoS control field information marked by flow identification, set QoS control field indication bit to be 1, compress MAC frame header The QoS control field appears in , indicating that the receiving station obtains the QoS control field information from the compressed MAC frame header; otherwise, the QoS control field indication bit is set to 0, and the QoS control field is defaulted in the compressed MAC frame header. the

(3-5), if the frame control field of the data packet indicates that there is an HT control field, and the HT control field information is different from the HT control field information marked by the flow identifier, set the HT control field indication bit to 1, and compress the MAC frame header The HT control field appears in , indicating that the receiving station obtains the HT control field information from the compressed MAC frame header; otherwise, the HT control field indication bit is set to 0, and the HT control field is defaulted in the compressed MAC frame header. the

In step S806, the sending station STA1 determines whether to end the use of the flow identification after the successful transmission of the data packet, and if it is determined that the use of the flow identification ends after the successful transmission of the data packet, then perform step S808; otherwise, perform step S807;

In step S807, the flow end bit (TAIL bit) of sending station STA1 setting data packet is invalid, and instruction receiving station deletes the flow identification that local storage unit preserves and the MAC frame header field information of flow identification mark; Described flow end bit can configure In but not limited to stream fields. the

In step S808, the sending station STA1 sets the end-of-stream bit (TAIL bit) of the data packet to be valid, instructing the receiving station to continue saving the local flow identifier and the MAC frame header field information marked by the flow identifier. the

FIG. 9 illustrates the packet format of the compressed MAC frame header field. In addition to including the conventional short training field, long training field, service field, and trailer and padding fields, the data packet introduces stream compression bits in the signaling field. At the same time, the data packet introduces the flow field in the data field, the flow field includes the flow identifier, and the time domain field indicator bit, the address 3 field indicator bit, the address 4 field indicator bit, the QoS control field indicator bit, and the HT control field indicator bit , TAIL indicator, etc. As can be seen from Figure 9, since the frame control field of the packet indicates that there is a QoS control field, and the QoS control field is different from the QoS control field information marked by the flow identifier, the QoS control field indication bit in the flow field is 1, and in The flow field is immediately followed by the corresponding QoS control field. Compared with the complete MAC frame header, the length is significantly reduced. the

It should be pointed out that although FIG. 9 shows the specific position of the stream compression bit, the stream compression bit can be set in other parts than the signaling field, such as the frame control field. the

In step S805, the sending station STA1 sets the stream compression bit of the signaling field in the data packet to 0, and the data packet carries a complete MAC frame header. the

In step S809, the sending station STA1 sends the data packet. the

In step S810, the receiving station STA2 receives the data packet. the

In step S811, the receiving station STA2 judges whether the stream compression bit of the signaling field in the data packet is valid, and if the stream compression bit of the signaling field in the data packet is valid, execute step S812, otherwise execute step S813. the

In step S812, the receiving station STA2 obtains the flow field information in the MAC frame header field and the flow identifier therein; according to the flow identifier, it searches the complete MAC frame header field of the data packet from the local storage unit. the

In addition, according to one of the time domain/ID field indication bit, the address 3 field indication bit, the address 4 field indication bit, the QoS control field indication bit, the HT control field indication bit or any combination thereof in the MAC frame header field, the The complete MAC frame header field information of this packet. the

(4-1). If the indication bit of the time domain field is 1, obtain the time domain/ID field information of the data packet from the time domain/ID field in the compressed MAC frame header. the

(4-2), if the address 3 field indication bit is 1, then obtain the address 3 information of the data packet from the address 3 field in the compressed MAC frame header; otherwise obtain the address 3 information of the data packet from the local storage unit. the

(4-3), if the address 4 field indication bit is 1, then obtain the address 4 information of the data packet from the address 3 field in the compressed MAC frame header; otherwise obtain the address 4 information of the data packet from the local storage unit. the

(4-4), if the QoS control field indication bit is 1, then obtain the QoS control information of the data packet from the QoS control field in the compressed MAC frame header; otherwise obtain the QoS control information of the data packet from the local storage unit. the

(4-5) If the HT control field indication bit is 1, then obtain the HT control information of the data packet from the HT control field in the compressed MAC frame header; otherwise obtain the HT control information of the data packet from the local storage unit. the

Through the above-mentioned field indication bits, the embodiments of the present invention can flexibly handle changing MAC frame header fields and improve the flexibility of use. the

In addition, the receiving station STA2 obtains the stream end bit information of the data packet, and if the stream end bit is valid, then delete the stream ID stored in the local storage unit and the MAC frame header field marked by the stream ID; otherwise, continue to save the stream ID stored in the local storage unit and the MAC frame header field marked by the flow identifier. the

In step S813, the receiving station STA2 acquires field information of the complete MAC frame header of the data packet from the complete MAC frame header. the

In step S814, the receiving station STA2 feeds back a response message of the data packet. the

In step S815, the sending station STA1 receives the response message of the data packet, if the flow end information in the data packet is valid, then delete the flow identification and the MAC frame header field of the flow identification mark that the local storage unit saves; otherwise continue to keep the local storage unit The flow identifier and the MAC frame header field marked by the flow identifier. the

FIG. 10 is a schematic diagram of continuous data packets in the second embodiment. As shown in FIG. 10 , the sending station STA1 sends an HC-REQ request; the receiving station STA2 responds with HC-RESP, and saves the flow identifier and the marked MAC frame header field. After receiving the HC-RESP response, the sending station STA1 successively sends data packets DATA1 (TAIL=0); DATA2 (QoS=1, TAIL=0); . . . ; DATA3 (TAIL=0). The receiving station STA2 responds with an ACK. Finally, the sending station STA1 sends DATA4, where TAIL=1; the receiving station STA2 responds with an ACK response, and deletes the flow identifier and the marked MAC frame header field information at the same time. the

It should be pointed out that in the foregoing descriptions of Embodiment 1 and Embodiment 2, the field information indicated by the Flow ID remains unchanged in the continuous data packet flow corresponding to the identifier, but the field information indicated by the Flow ID can also be changed. Instant updates. The steps S812 and S815 of the second embodiment are taken as an example to describe below. the

In step S812, (4-2)-(4-5) is adjusted as follows:

(5-2), if the address 3 field indication bit is 1, then obtain the address 3 information of data packet from the address 3 field in the compressed MAC frame header, update the address 3 that preserves in the local memory unit simultaneously, the marked address of flow identification information; otherwise, obtain the address 3 information of the data packet from the local storage unit. the

(5-3), if the address 4 field indication bit is 1, then obtain the address 4 information of the data packet from the address 4 field in the compressed MAC frame header, and update the address 4 saved in the local storage unit and the marked address of the stream identifier simultaneously information; otherwise, obtain the address 4 information of the data packet from the local storage unit. the

(5-4), if the QoS control field indication bit is 1, then obtain the QoS control information of data packet from the QoS control field in the compressed MAC frame header, update the QoS that is preserved in the local memory unit simultaneously, the marked QoS of flow identification control information; otherwise, obtain the QoS control information of the data packet from the local storage unit. the

(5-5), if the HT control field indication bit is 1, then obtain the HT control information of the data packet from the HT control field in the compressed MAC frame header, and update the HT that is preserved in the local storage unit and identified by the stream identifier Control information; otherwise, obtain the HT control information of the data packet from the local storage unit. the

In step S815, its adjustment is as follows:

The sending station STA1 receives the response message of the data packet, if the flow end information in the data packet is valid, then delete the flow identification and the MAC frame header field marked by the flow identification stored in the local storage unit; otherwise, according to the field indication bit contained in the flow field in the data packet Update the MAC frame header field information marked by the flow identifier of the local storage unit:

(6-1), if the address 3 field indication bit in the flow field is 1, then obtain the address 3 information of the data packet from the address 3 field in the compressed MAC frame header, and update the address 3 information marked by the flow identification as a data packet Compress the address 3 field information of the MAC frame header; otherwise keep the address 3 information marked by the flow identifier unchanged;

(6-2), if the address 4 field indication bit in the flow field is 1, then obtain the address 4 information of the data packet from the address 3 field in the compressed MAC frame header, and update the address 4 information marked by the flow identification as the data packet Compress the address 4 field information of the MAC frame header; otherwise keep the address 4 information marked by the flow identifier unchanged;

(6-3), if the QoS control field indicator in the flow field is 1, then obtain the QoS control information of the data packet from the QoS control field in the compressed MAC frame header, and update the QoS control information marked by the flow identification as the data packet Compress the QoS control field information of the MAC frame header; otherwise keep the QoS control information marked by the flow identifier unchanged;

(6-4), if the HT control field indication bit in the flow field is 1, then obtain the HT control information of the data packet from the HT control field in the compressed MAC frame header, and update the HT control information marked by the flow identification as the data packet Compress the HT control field information of the MAC frame header; otherwise keep the HT control information marked by the flow identifier unchanged. the

Embodiment three

This embodiment protects another method for transmitting continuous data packets. The sending station and the receiving station determine the transmission format of the next data packet by negotiating the indicator bit, and provide a more effective solution for compressing the MAC frame header. the

FIG. 11 is a schematic flowchart of sending continuous data packets according to Embodiment 3 of the present invention. the

As shown in FIG. 11, the process starts from step S1100. the

In step S1101, the sending station STA1 prepares to send a data packet. the

In step S1102, the sending station STA1 judges whether the data packet is the first data packet in the continuous data packets sent to the receiving station STA2, if yes, go to step S1104, otherwise go to step S1103. the

In step S1103, the sending station parses the previous response message of the data packet sent to the receiving station STA2, and obtains the compression negotiation bit of the response packet. the

In step S1105, the sending station STA1 judges whether the compression negotiation bit of the response packet of the previous data packet is valid. If valid, go to step S1107, otherwise go to step S1106. the

In step S1106, the sending station STA1 clears the compressed field information stored in the local storage unit, and then turns to step S1104. the

In step S1107, the sending station STA1 keeps the compressed field information stored in the local storage unit unchanged. the

In step S1104, the sending station STA1 sets the completeness indication bit of the data packet to 1, the data packet contains a complete MAC frame header, and the completeness indication bit indicates that the data packet contains a complete MAC frame header. the

The compression negotiation bit can be set in the signaling field in the data packet, or in the frame control field in the data packet, and its position is not limited. the

In step S1108, the sending station STA1 locally saves the compressed field information in the complete MAC frame header. the

In step S1109, the sending station STA1 sets the integrity indicator bit of the data packet to 0, the data packet contains a compressed MAC frame header, and the integrity indicator bit indicates that the data packet contains a compressed MAC frame header. the

In step S1110, the sending station STA1 judges whether the specific field in the MAC frame header of the next continuous data packet can be replaced by the specific field stored in the storage unit, if it can, go to step S1111, otherwise go to step S1112. the

In step S1111, the sending station STA1 sets the compression negotiation bit to 1, indicating that the next continuous data packet sent by the sending station STA1 will contain a compressed MAC frame header. the

The compression negotiation bit can be set in the signaling field in the data packet, or in the frame control field in the data packet, and its position is not limited. the

In step S1112, the sending station STA1 sets the compression negotiation bit to 0, indicating that the next continuous data packet sent by the sending station STA1 will contain a complete MAC frame header. the

In step S1113, the sending station STA1 sends the data packet. the

FIG. 12 is a schematic flowchart of receiving continuous data packets according to Embodiment 3 of the present invention. the

As shown, the process begins at step 1200 . the

In step S1201, the receiving station STA2 receives the data packet. the

In step S1202, the receiving station STA2 judges whether the integrity indicator bit in the data packet is valid. If valid, go to step S1204, otherwise go to step S1203. the

In step S1203, the receiving station STA2 obtains the complete field information of the MAC frame header of the data packet from the MAC frame header. the

In step S1204, the receiving station STA2 obtains the specific field information of the MAC frame header of the data packet from the local storage unit. the

In step S1205, the receiving station STA2 judges whether the compression negotiation bit in the data packet is valid. If valid, go to step S1206, otherwise go to step S1207. the

In step S1206, the receiving station STA2 decides whether to agree that the next data packet contains the compressed MAC frame header. If yes, go to step S1208; if not, go to step S1209. the

In step S1208, the receiving station STA2 saves the specific field information in the MAC frame header in the local storage unit, and sets the compression negotiation bit of the response message to 1, indicating that the receiving station STA2 is ready to receive the data packet containing the compressed MAC frame header. the

In step S1207, the receiving station STA2 clears the specific field information in the MAC header stored in the local storage unit, and sets the compression negotiation bit of the response message to 0, indicating that the receiving station STA2 does not receive the data packet containing the compressed MAC header. the

In step S1209, the receiving station STA2 sends a response message. the

FIG. 13 illustrates the format of the data packet including the compressed MAC frame header in the third embodiment. In addition to the conventional short training field, long training field, service field, and tail and padding field, the data packet also introduces a complete indication bit and a compression negotiation bit in the signaling field. At the same time, the data packet introduces a compressed MAC frame header, frame body and FCS in the data field, wherein the compressed MAC frame header only includes a frame control field and a sequence control field. Obviously, at this time, the length of the MAC frame header of the data packet is greatly compressed compared with before. the

Fig. 14 is a schematic diagram of the transmission of continuous data packets in the third embodiment. As shown in FIG. 14 , the sending station STA1 sends a complete data packet 1, in which the complete indication bit is 1, and the compression negotiation bit is 0. The receiving station STA2 receives the data packet 1, responds to the response message ACK frame, sets the compression negotiation bit of the response packet to 0, and indicates not to receive the data packet containing the compressed MAC frame header. the

The sending station STA1 sends a complete data packet 2, in which both the complete indication bit and the compression negotiation bit are 1. The receiving station STA2 receives the data packet 2, responds to the response message ACK frame, and sets the compression negotiation bit of the response packet to be 0, indicating that the data packet containing the compressed MAC frame header is not received. the

The sending station STA1 sends a complete data packet 3, in which both the complete indication bit and the compression negotiation bit are 1. The receiving station STA2 receives the data packet 3, responds to the response message ACK frame, sets the compression negotiation bit of the response packet to 1, and indicates to receive the data packet containing the compressed MAC frame header. the

The sending station STA1 sends the compressed data packet 4, in which the complete indication bit is 0 and the compression negotiation bit is 1. The receiving station STA2 receives the data packet 4, responds to the response message ACK frame, sets the compression negotiation bit of the response packet to 1, and indicates to continue to receive the data packet containing the compressed MAC frame header. the

The sending station STA1 sends the compressed data packet 5, in which the complete indication bit is 0 and the compression negotiation bit is 1. The receiving station STA2 receives the data packet 5, responds to the response message ACK frame, sets the compression negotiation bit of the response packet to 1, and indicates to continue to receive the data packet containing the compressed MAC frame header. the

The sending station STA1 sends a compressed data packet 6, in which both the integrity indicator bit and the compression negotiation bit are 0. The receiving station STA2 receives the data packet 6, responds with an ACK, and sets the compression negotiation bit to 0, indicating that it will not continue to receive the data packet containing the compressed MAC frame header. the

In this embodiment, the corresponding fields in the locally stored MAC frame header fields are updated immediately according to the validity of each indicator bit (see step S1108 in FIG. 11 and step S1208 in FIG. 12 ). However, another feasible solution is that although the indication bits are valid, the locally stored MAC frame header field remains unchanged. the

Embodiment four

The difference between this embodiment and the third embodiment is that the compression control field is included in the compressed MAC frame header in the continuous data packet, and the compression control field includes the address 3 field indicator bit, the address 4 field indicator bit, and the QoS control field indicator bit One or a combination of the HT control indication bit and the like provides a flexible application solution for compressing the MAC frame header. the

Fig. 15 is a schematic flow chart of sending continuous packets according to Embodiment 4 of the present invention. Fig. 15 is basically the same as Fig. 11, so the same steps are represented by the same serial numbers. The only difference lies in step S1507 and step S1509. the

In step S1507, since it is judged in step S1105 that the compression negotiation bit of the response message of the previous data packet is valid, the specific field information stored in the local storage unit continues to be stored or updated. The update method is that if the field indication bit in the compression control field of the previous data packet is valid, then update the corresponding field information in the storage unit unit. For example, in the previous data packet, if the QoS control field indication bit is 1, then the QoS control field information in the storage unit is updated according to the QoS control field information in the data packet. the

In step S1509, the sending station STA1 prepares a data packet including a compressed MAC frame header to be sent to the receiving station. The compressed MAC frame header includes a compression control field, and the compression control field includes a plurality of field indicator bits, indicating each specific field in the specific field of the MAC frame header, such as a time domain field indicator bit, an address 3 field indicator bit, an address 4 field indication bit, QoS control field indication bit, HT control field indication bit, etc. the

(12-1), if the time domain field of this data packet cannot be defaulted, then the time domain field indication bit is set to be 1, and the time domain field appears in the compressed MAC frame header, and the corresponding time is set; otherwise, the time domain field indication bit is set If it is 0, it is the default time domain field in the compressed MAC frame header. the

(12-2), if the frame control in this data packet indicates that there is an address 3 field in this packet, and the address 3 field information is different from the address 3 field information stored in the local storage unit and in the specific field, set the address 3 field indication bit If it is 1, the address 3 field appears in the compressed MAC frame header, indicating that the receiving station obtains the address 3 field information from the compressed MAC frame header of the data packet; otherwise, the address 3 field indication bit is set to 0, and the default in the compressed MAC frame header is Address 3 field. the

(12-3), if the frame control in this data packet indicates that there is an address 4 field in this packet, and the address 4 field information is different from the address 4 field information stored in the local storage unit and in the specific field, set the address 4 field indication bit If it is 1, the address 4 field appears in the compressed MAC frame header, indicating that the receiving station obtains the address 4 field information from the compressed MAC frame header of the data packet; Province address 4 fields. the

(12-4), if the frame control in this data packet indicates that there is a QoS control field in this packet, and the QoS control field information is different from the QoS control field information stored in the local storage unit and in the specific field, set the QoS control field indication bit If it is 1, the QoS control field appears in the compressed MAC frame header, indicating that the receiving station obtains the QoS control field information from the compressed MAC frame header of the data packet; otherwise, the QoS control field indication bit is set to 0, and the Save the QoS control field. the

(12-5), if the frame control in this data packet indicates that there is an HT control field in this packet, and the HT control field information is different from the HT control field information stored in the local storage unit and in the specific field, set the HT control field indication bit If it is 1, the HT control field appears in the compressed MAC frame header, indicating that the receiving station obtains the HT control field information from the compressed MAC frame header of the data packet; Save the HT control field. the

Fig. 16 is a schematic flowchart of receiving continuous data packets according to Embodiment 4 of the present invention. Fig. 16 is basically the same as Fig. 12, so the same steps are represented by the same serial numbers. The difference between FIG. 16 and FIG. 12 lies in step 1603 and step 1608, that is, how to obtain the field information in the MAC frame header and the specific field information in the local storage unit of the packet containing the compressed MAC frame header. the

In step 1603, since the complete indication bit of the signaling field in the data packet is 0, the receiving station STA1 obtains the field information in the MAC frame header of the data packet from the compressed MAC frame header or the local storage unit. the

(13-1). If the indication bit of the time domain field in the compression control field is 1, obtain the time domain field information from the compressed MAC frame header. the

(13-2), if the address 3 field indicator in the compression control field is 1, then obtain the address 3 information of this data packet from the address 3 fields in the compressed MAC frame header; otherwise obtain the address of this data packet from the local storage unit 3 information. the

(13-3), if the address 4 field indicator in the compression control field is 1, then obtain the address 4 information of this data packet from the address 4 field in the compressed MAC frame header; otherwise the local storage unit obtains the address 4 of this data packet information. the

(13-4), if the QoS control field indication bit is 1 in the compressed control field, then obtain the QoS control information of this data packet from the QoS control field in the compressed MAC frame header; otherwise the local storage unit obtains the QoS control information of this packet . the

(13-5), if the HT control field indication bit is 1 in the compression control field, then obtain the HT control information of this data packet from the HT control field in the compressed MAC frame header; otherwise the local storage unit obtains the indicated HT of the stream identifier control information. the

In step 1608, due to step S1206, the receiving station STA1 agrees that the sending station STA2 will compress the MAC frame header in the next data packet, then the receiving station STA1 locally saves or updates the specific field information in the MAC frame header, and sets the compression negotiation bit of the response packet is 1. If the complete indication bit is effective, then set up the storage unit, and save the specific field information in the complete MAC frame header; if the complete indication position is invalid, then if the field indication position in the compression control field of this data packet is valid, then in the storage unit unit Update the corresponding field information, otherwise do not update. For example, in this data packet, if the QoS control field indication bit is 1, then the QoS control field information in the storage unit is updated according to the QoS control field information in the compressed MAC frame header of the data packet. If the HT control field indication bit is 0, the HT control field information in the storage unit is not updated. the

FIG. 17 illustrates the format of a data packet including a compressed MAC frame header in Embodiment 4. As shown in FIG. 14 , in addition to the conventional short training field, long training field, service field, and tail and padding field, the data packet also introduces a complete indication bit and a compression negotiation bit in the signaling field. At the same time, the data packet introduces compressed MAC frame header, frame body and FCS in the data field, wherein the compressed MAC frame header contains frame control, compression control, sequence control and QoS control, because the QoS control field in the compressed control field The indication bit is 1, so the QoS control field appears in the compressed MAC frame header; obviously, the length of the MAC frame header field is significantly compressed compared with before. the

Fig. 18 is a schematic diagram of the transmission of continuous packets in the fourth embodiment. Figure 18 is basically the same as Figure 14, except that in Figure 18, in the compressed data packet 5 sent by the sending station STA1, the QoS control field indication bit contained in the compressed control field is 1, indicating that the compressed MAC frame header Contains the QoS control field. the

Fig. 19 is a schematic structural diagram of a site according to an embodiment of the present invention. As shown in FIG. 19 , the station 1900 includes: a first sending unit 1910, which sends a compression request to the second station, and the compression request carries a stream identifier and field information of a MAC frame header of a subsequent data packet; a receiving unit 1920, Receive the compressed response sent by the second station; the second sending unit 1930 sends to the second station a first data packet including a complete MAC frame header or a compressed MAC frame header with a flow field, wherein the flow field includes a flow identifier . the

Preferably, the flow indication information is carried in the first data packet, and the flow indication information is configured in the signaling field or the frame control field; the flow indication information indicates that the first data packet is a complete MAC frame header data packet or contains a flow field of the compressed MAC frame header of the packet. the

Preferably, the flow field further includes: one or more of time domain/ID field indicator bits, address 3 field indicator bits, address 4 field indicator bits, QoS control field indicator bits, and HT control field indicator bits; The time domain/ID field indication bit, the address 3 field indication bit, the address 4 field indication bit, the QoS control field indication bit, and the HT control field indication bit respectively indicate whether the corresponding field is included in the first data packet where they are located. the

Preferably, the station includes an updating unit, configured to update the corresponding field information stored locally according to one or more of the address 3 field indication bit, the address 4 field indication bit, the QoS control field indication bit, and the HT control field indication bit . the

Preferably, the stream field includes a stream end bit; the stream end bit is used to indicate whether to end the use of the stream identifier. the

Preferably, the field information is one of address 3 field, address 4 field, QoS control field or HT control field or any combination thereof. the

Fig. 20 is a schematic structural diagram of a site according to an embodiment of the present invention. As shown in FIG. 20 , the station 2000 includes: a sending unit 2010, which sends a first data packet to the second station, and the first data packet carries complete indication information and/or a first compressed negotiation letter; a receiving unit 2010, which receives the first The two stations feed back the response message of the first data packet, and acquire the second compression negotiation information in the response message. the

Preferably, the complete indication information indicates whether the first data packet carries a complete MAC frame header, and when the complete indication information is valid, the first data packet carries a complete MAC frame header; the complete indication information is configured in the first Signaling field or frame control field of a data packet. the

Preferably, the first compression negotiation information indicates whether to send a second data packet next to the first data packet and containing a compressed MAC frame header to the second station; the first compression negotiation information is configured in the information of the first data packet command field or frame control field. the

Preferably, the station includes: a judging unit, before sending the first data packet to the second station, judging whether the first data packet is sent to the second station and is the first data packet in the continuous packets; the setting unit, at When the first data packet is sent to the second station and is the first packet in the continuous packets, the complete indication information of the first data packet is set to be valid. the

Preferably, the station includes: a judging unit, when the first data packet is sent to the second station and is not the first packet in the continuous packet, judge the third data sent to the second station before sending the first data packet Whether the second compression negotiation message of the response message of the packet is valid; the setting unit, in the case where the second compression negotiation message is valid, sets the complete indication information of the first data packet to be invalid; if the second compression negotiation message is invalid In this case, the complete indication information of the first data packet is set to be valid. Further preferably, the station includes a storage unit, and if the second compression negotiation message is valid, locally save the compression field in the MAC frame header unchanged or update it. the

Preferably, in the case where the complete indication information of the first data packet is set to be invalid, the first transmission packet is configured with a compressed MAC frame header; the compressed MAC frame header includes a frame control field and a sequence control field, or a frame control field, compression control fields and sequence control fields. Further preferably, the compression control field includes one of time domain/ID field indication bits, address 3 field indication bits, address 4 field indication bits, QoS control field indication bits or HT control field indication bits or any combination thereof. the

Further preferably, in the case where the complete indication information of the first data packet is set to be valid, the first transmission packet is configured with a complete MAC frame header. the

Preferably, the station includes: a storage unit, locally storing the field information in the MAC frame header, the field information is one of address 3 field, address 4 field, QoS control field or HT control field or any combination thereof . the

Preferably, the station includes: a judging unit, judging whether the field information of the MAC frame header of the second data packet sent to the second station and following the first data packet can be replaced by the field information of the MAC frame header stored locally; A unit, when the field information of the second data packet can be replaced by field information stored locally, the compression negotiation message of the first data packet is set to be valid; when the field information of the second data packet cannot be stored locally In the case of information replacement, the compression negotiation message of the first data packet is set to be invalid. the

Although the embodiments of the present invention have been described in detail above in combination with various indication bits, those skilled in the art understand that these indication bits may be replaced by other forms of indication information. the

Those skilled in the art should further realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the hardware and software interchangeability, the composition and steps of each example have been generally described in terms of functions in the above description. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention. the

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention within. the

Claims (34)

1. A method for sending data packets, comprising: The first station sends a compression request to the second station, and the compression request carries the flow identifier and the field information of the media access control MAC frame header of the subsequent data packet; receiving the compressed response sent by the second site; Sending the first data packet including a complete MAC frame header or a compressed MAC frame header with a flow field to the second station, wherein the flow field includes a flow identifier. 2. The method of claim 1, comprising: carrying flow indication information in the first data packet, where the flow indication information is configured in a signaling field or a frame control field; The flow indication information indicates that the first data packet is a complete MAC frame header data packet or a compressed MAC frame header data packet including a flow field. 3. The method of claim 1, the flow field further comprising: One or more of the time domain/ID field indication bit, the address 3 field indication bit, the address 4 field indication bit, the QoS control field indication bit, and the HT control field indication bit; The time domain/ID field indication bit, the address 3 field indication bit, the address 4 field indication bit, the QoS control field indication bit, and the HT control field indication bit respectively indicate whether the corresponding field is included in the first data packet where they are located. 4. The method according to claim 3, wherein according to one or more of the address 3 field indication bit, the address 4 field indication bit, the QoS control field indication bit, and the HT control field indication bit, the corresponding field information stored locally is updated . 5. The method of claim 1, comprising: The stream field includes a stream end bit; the stream end bit is used to indicate whether to end the use of the stream identifier. 6. The method according to claim 1, wherein the field information is one or any combination of address 3 field, address 4 field, QoS control field or HT control field. 7. A method for sending data packets, comprising: The first station sends a first data packet to the second station, where the first data packet carries complete indication information and/or first compression negotiation information; Receive the response message that the second station feeds back the first data packet, and acquire the second compression negotiation information in the response message. 8. The method of claim 7, comprising: The complete indication information indicates whether the first data packet carries a complete MAC frame header, and when the complete indication information is valid, the first data packet carries a complete MAC frame header; The complete indication information is configured in the signaling field or the frame control field of the first data packet. 9. The method of claim 7, comprising: The first compression negotiation information indicates whether to send a second data packet next to the first data packet and including a compressed MAC frame header to the second station; The first compression negotiation information is configured in a signaling field or a frame control field of the first data packet. 10. The method of any one of claims 7-9, comprising: Before sending the first data packet to the second station, judge whether the first data packet is sent to the second station and is the first data packet in the continuous packet; when the first data packet is sent to the second station and is a continuous packet In the case of the first packet in , set the complete indication information of the first data packet to be valid. 11. The method of any one of claims 7-9, comprising: In the case that the first data packet is sent to the second station and is not the first packet of consecutive packets, the second compression negotiation of the response message to determine the third data packet sent to the second station before sending the first data packet whether the message is valid; When the second compression negotiation message is valid, setting the complete indication information of the first data packet to be invalid; In the case that the second compression negotiation message is invalid, the complete indication information of the first data packet is set to be valid. 12. The method according to any one of claims 7-9, comprising keeping the locally saved compression field in the MAC frame header unchanged or updating it when the second compression negotiation message is valid. 13. The method of claim 11, comprising: In the case where the complete indication information of the first data packet is set to be invalid, the first transmission packet is configured with a compressed MAC frame header; the compressed MAC frame header includes a frame control field and a sequence control field, or a frame control field, a compression control field and a sequence control field. 14. The method of claim 13, comprising: The compression control field includes one of time domain/ID field indication bits, address 3 field indication bits, address 4 field indication bits, QoS control field indication bits or HT control field indication bits or any combination thereof. 15. The method of claim 10 or 11, comprising: In a case where the complete indication information of the first data packet is set to be valid, the first transmission packet is configured with a complete MAC frame header. 16. The method of claim 15, comprising: The field information in the MAC frame header is saved locally, and the field information is one of address 3 field, address 4 field, QoS control field or HT control field or any combination thereof. 17. The method of claim 7, comprising: Judging whether the field information of the MAC frame header of the second data packet sent to the second station and following the first data packet can be replaced by the field information of the MAC frame header stored locally; When the field information of the second data packet can be replaced by locally stored field information, the compression negotiation message of the first data packet is set to be valid; When the field information of the second data packet cannot be replaced by locally stored field information, the compression negotiation message of the first data packet is set to be invalid. 18. A site comprising: The first sending unit sends a compression request to the second station, and the compression request carries the flow identifier and the field information of the media access control MAC frame header of the subsequent data packet; a receiving unit, configured to receive the compressed response sent by the second site; The second sending unit is configured to send the first data packet including a complete MAC frame header or a compressed MAC frame header with a flow field to the second station, wherein the flow field includes a flow identifier. 19. The site of claim 18, wherein: carrying flow indication information in the first data packet, where the flow indication information is configured in a signaling field or a frame control field; The flow indication information indicates that the first data packet is a complete MAC frame header data packet or a compressed MAC frame header data packet including a flow field. 20. The site of claim 18, the stream field further comprising: One or more of the time domain/ID field indication bit, the address 3 field indication bit, the address 4 field indication bit, the QoS control field indication bit, and the HT control field indication bit; The time domain/ID field indication bit, the address 3 field indication bit, the address 4 field indication bit, the QoS control field indication bit, and the HT control field indication bit respectively indicate whether the corresponding field is included in the first data packet where they are located. 21. The station according to any one of claims 18-20, wherein an update unit is used for according to one of the address 3 field indication bit, the address 4 field indication bit, the QoS control field indication bit, the HT control field indication bit or Multiple, update the corresponding field information saved locally. 22. The site of claim 18, wherein: The stream field includes a stream end bit; the stream end bit is used to indicate whether to end the use of the stream identifier. 23. The station according to claim 18, wherein the field information is one or any combination of the address 3 field, the address 4 field, the QoS control field or the HT control field. 24. A site comprising: a sending unit, configured to send a first data packet to a second station, where the first data packet carries complete indication information and/or first compression negotiation information; The receiving unit is configured to receive a response message in which the second station feeds back the first data packet, and acquire second compression negotiation information in the response message. 25. The site of claim 24, wherein: The complete indication information indicates whether the first data packet carries a complete MAC frame header, and when the complete indication information is valid, the first data packet carries a complete MAC frame header; The complete indication information is configured in the signaling field or the frame control field of the first data packet. 26. The site of claim 24, wherein: The first compression negotiation information indicates whether to send a second data packet next to the first data packet and including a compressed MAC frame header to the second station; The first compression negotiation information is configured in a signaling field or a frame control field of the first data packet. 27. The station of any one of claims 24-26, comprising: The judging unit, before sending the first data packet to the second station, judges whether the first data packet is sent to the second station and is the first data packet in the continuous packets; The setting unit is configured to set the integrity indication information of the first data packet to be valid when the first data packet is sent to the second station and is the first packet in the continuous packets. 28. The station of any one of claims 24-26, comprising: The judging unit, when the first data packet is sent to the second station and is not the first packet in the continuous packets, judges the first data packet of the response message of the third data packet sent to the second station before sending the first data packet. 2. Whether the compression negotiation message is valid; A setting unit, when the second compression negotiation message is valid, set the complete indication information of the first data packet to be invalid; when the second compression negotiation message is invalid, set the complete indication information of the first data packet to be valid . 29. The station according to claim 28, further comprising a storage unit, in the case that the second compression negotiation message is valid, locally save the compression field in the MAC frame header unchanged or update it. 30. The site of claim 28, comprising: In the case where the complete indication information of the first data packet is set to be invalid, the first transmission packet is configured with a compressed MAC frame header; the compressed MAC frame header includes a frame control field and a sequence control field, or a frame control field, a compression control field and a sequence control field. 31. The site of claim 30, comprising: The compression control field includes one of time domain/ID field indication bits, address 3 field indication bits, address 4 field indication bits, QoS control field indication bits or HT control field indication bits or any combination thereof. 32. A station as claimed in claim 28 or 29 comprising: In a case where the complete indication information of the first data packet is set to be valid, the first transmission packet is configured with a complete MAC frame header. 33. The site of claim 24, comprising: The storage unit locally stores the field information in the MAC frame header, and the field information is one of address 3 field, address 4 field, QoS control field or HT control field or any combination thereof. 34. The site of claim 24, comprising: Judging unit, judging whether the field information of the MAC frame header of the second data packet sent to the second station and closely following the first data packet can be replaced by the field information of the MAC frame header stored locally; A setting unit, when the field information of the second data packet can be replaced by field information stored locally, the compression negotiation message of the first data packet is set to be valid; when the field information of the second data packet cannot be stored locally In the case of field information replacement, the compression negotiation message of the first data packet is set to be invalid.

Images