CN103188146B - 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.

technical background

The IEEE 802.11 technology formulates a general medium access control layer (Medium access control, MAC) for multiple physical layers (Physical layer, PHY) to regulate the construction of the wireless local area network. 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 communication between sites takes the packet structure as the basic unit, and the packet structure is shown in Figure 1, wherein the short training field (Short training field, referred to as STF) and the long training field (Long training field, referred to as LTF) It 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 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.

A MAC frame generally includes three parts, a MAC header (MAC header), a variable-length frame body (Frame body), and a frame check sequence (Frame check sequence, FCS for short). The MAC frame header field includes 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, meaning service quality) 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.

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.

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 multiple consecutive data packets transmitted , 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.

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.

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.

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.

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.

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.

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.

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.

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.

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 of drawings

Fig. 1 is the packet structure of 802.11;

Fig. 2 illustrates a transmission process of continuous data packets in the prior art;

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

Fig. 4 illustrates the service set of WLAN;

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

Fig. 6 illustrates the data packet format comprising the compressed MAC frame header in Embodiment 1;

FIG. 7 is a schematic diagram of the transmission of continuous data packets in Embodiment 1;

FIG. 8 is a flowchart of data packet transmission between stations according to Embodiment 2 of the present invention;

Fig. 9 illustrates the data packet format comprising the compressed MAC frame header in Embodiment 2;

FIG. 10 is a schematic diagram of the transmission of continuous data packets in Embodiment 2;

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 illustrates the data packet format including the compressed MAC frame header in the third embodiment;

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 illustrates the data packet format including the compressed MAC frame header in Embodiment 4;

Fig. 18 is a schematic diagram of 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.

detailed description

FIG. 4 illustrates various service sets of a wireless local area network (WLAN: Wireless local area network). The basic service set (BSS: Basic service set) is composed of STAs within a specific coverage area and having certain associations. BSS2 and BSS3 shown in Figure 4 are such basic service sets. In the BSS network, the central station with full-time management of the 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, station STAs can also directly communicate with each other through an ad hoc network, which is an independent basic service set (IBSS: Independent basic service set), such as BSS1.

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 .

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 compressed format of the flow identifier, and to indicate whether the multiple MAC frame header fields of the packet are the same as the information of the MAC header field identified by the flow identifier, the design is designed A scheme for improving the application flexibility of flow identification.

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

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 tag-flow identifier Flow ID and the same MAC frame header field information of consecutive data packets identified by the flow identifier.

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.

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).

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

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

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, and if it is determined that the MAC frame header field of the data packet can be replaced by a flow identifier, step S505 is performed; otherwise, step S506 is performed;

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.

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.

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.

(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.

(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.

(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.

(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.

(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.

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, there are corresponding QoS control fields. Compared with the complete MAC frame header, the length is significantly reduced.

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.

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.

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

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

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.

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.

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.

(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 .

(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.

(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.

(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.

(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.

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.

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.

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

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

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

In step S515, the receiving station STA2 receives the end-of-flow message, deletes the flow identifier and its marked MAC frame header field information stored in the local storage unit, 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.

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.

Embodiment 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.

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

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 MAC frame header field may 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.

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.

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.

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.

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.

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.

(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.

(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.

(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.

(3-4), if the frame control field of the data packet indicates that there is a QoS field, and the QoS control field information is different from the QoS control field information marked by the flow identifier, the QoS control field indication bit is set to be 1, and in the compressed MAC frame header The QoS control field appears, instructing the receiving station to obtain the QoS control field information from the compressed MAC frame header; otherwise, set the QoS control field indication bit to 0, and default the QoS control field in the compressed MAC frame header.

(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.

In step S806, the sending station STA1 determines whether to end the use of the flow identifier after the data packet is successfully transmitted, and if it is determined to end the use of the flow identifier 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.

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.

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.

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.

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.

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

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

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.

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.

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.

(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.

(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.

(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.

(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.

(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.

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.

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.

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.

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

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.

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.

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.

In step S812, (4-2)-(4-5) are 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.

(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.

(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.

(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.

In step S815, it is adjusted 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.

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.

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

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

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

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.

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.

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.

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

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

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 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.

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

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.

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.

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 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.

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.

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

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

As shown, the process begins at step 1200 .

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

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.

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.

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.

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.

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.

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.

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.

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

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.

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 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, 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 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 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 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 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.

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.

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.

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.

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: if the field indication bit in the compression control field of the previous data packet is valid, update the corresponding field information in the storage 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.

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.

(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.

(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.

(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.

(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.

(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.

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.

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.

(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.

(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.

(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.

(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 .

(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.

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.

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.

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.

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 .

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.

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.

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 .

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.

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

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.

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.

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.

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.

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.

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.

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.

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 .

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.

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.

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 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.

Claims (26)

1. it is a kind of send packet method, including：

First website sends compression request to the second website, and the compression request carries the media of traffic identifier and follow-up data bag The field information of access control mac frame head；

Receive the compression response of the second website transmission；

Send comprising complete mac frame head to the second website or the first packet comprising the compression mac frame head with stream field, Wherein, the stream field includes traffic identifier, and the stream field also includes that time domain/id field indicating bit, 3 field of address are indicated One or more in position, 4 field indicating bit of address, QoS control field indicating bits, HT control field indicating bits, the time domain/ Id field indicating bit, 3 field indicating bit of address, 4 field indicating bit of address, QoS control field indicating bits, HT control fields are indicated Whether position includes corresponding field in indicating respectively the first packet which is located；

Stream configured information is carried in first packet, the stream configured information is configured in signaling field or frame control field In；

The stream configured information indicates that the first packet is complete mac frame head packet or the compression mac frame head comprising stream field Packet.

2. the method for claim 1, wherein according to 3 field indicating bit of address, 4 field indicating bit of address, QoS control words One or more in section indicating bit, HT control field indicating bits, update the local corresponding field information for preserving.

3. the method for claim 1, including：

The stream field includes flowing stop bits；The stream stop bits is used to indicate whether to terminate the use of traffic identifier.

4. the method for claim 1, wherein field information is 3 field of address, 4 field of address, QoS control fields or HT One kind of control field or their combination in any.

5. it is a kind of send packet method, including：

First website sends the first packet comprising complete mac frame head or compression mac frame head, and described first to the second website Packet carries complete configured information, or first packet carries complete configured information and the first compression negotiation information, The complete configured information indicates whether the first packet carries complete mac frame head, and the compression mac frame head is controlled comprising frame Field, compression control field and Sequence Control field, wherein, the compression control field comprising time domain/id field indicating bit, One kind of 3 field indicating bit of location, 4 field indicating bit of address, QoS control fields indicating bit or HT control field indicating bits or they Combination in any；The time domain/id field indicating bit, 3 field indicating bit of address, 4 field indicating bit of address, QoS control fields Whether indicating bit, HT control field indicating bits include corresponding field in indicating respectively the first packet which is located；

The response message that the second website feeds back the first packet is received, the second compression negotiation information in response message is obtained；

In the case of the second compression negotiation message is effective, keep the local packed field preserved in mac frame head constant or Updated.

6. method as claimed in claim 5, including：

The complete configured information indicates whether the first packet carries complete mac frame head, when complete configured information is effective, First packet carries complete mac frame head；

The complete configured information is configured in the signaling field or frame control field of the first packet.

7. method as claimed in claim 5, including：

When the first packet includes the first compression negotiation information, the first compression negotiation information is indicated whether to the second website Send immediately the first packet and the second packet comprising compression mac frame head；

Signaling field or frame control field of the first compression negotiation information configuration in the first packet.

8. the method as described in one of claim 5-7, including：

Before the first packet being sent to the second website, judge whether the first packet is destined to the second website and is continuous First packet in bag；The first packet be destined to the second website and first bag in being continuous bag in the case of, if The complete configured information for putting the first packet is effective.

9. the method as described in one of claim 5-7, including：

The first packet be destined to the second website and first bag in not being continuous bag in the case of, judge in transmission first Whether the second compression negotiation message that the response message of the 3rd packet of the second website is sent to before packet is effective；

In the case of the second compression negotiation message is effective, the complete configured information for arranging the first packet is invalid；

In the case of the second compression negotiation message invalid, the complete configured information for arranging the first packet is effective.

10. method as claimed in claim 9, including：

In the case where the complete configured information for arranging the first packet is invalid, the first packet configuration compression mac frame head is described Compression mac frame head includes frame control field, Sequence Control field and compression control field.

11. methods as claimed in claim 9, including：

In the case of the complete configured information for arranging the first packet is effective, the first packet configures complete mac frame head.

12. methods as claimed in claim 11, including：

The local field information preserved in mac frame head, the field information is 3 field of address, 4 field of address, QoS control fields Or one kind or their combination in any of HT control fields.

13. methods as claimed in claim 5, including：

Judgement is sent to the second website and whether the field information immediately following the mac frame head of the second packet of the first packet can use The local field information for preserving mac frame head replaces；

In the case that the available local field information for preserving of the field information of second packet replaces, the first data are set The compression negotiation message of bag is effective；

In the case that the field information of the unavailable local preservation of the field information of second packet replaces, arrange first and count According to the compression negotiation message invalid of bag.

A kind of 14. websites, including：

First transmitting element, sends compression request to the second website, and the compression request carries traffic identifier and follow-up data bag Media access control mac frame head field information；

Receiving unit, receives the compression response that the second website sends；

Second transmitting element, sends comprising complete mac frame head or comprising the compression mac frame head with stream field to the second website The first packet, wherein, the stream field includes traffic identifier, and the stream field also include time domain/id field indicating bit, One or many in 3 field indicating bit of location, 4 field indicating bit of address, QoS control field indicating bits, HT control field indicating bits It is individual, the time domain/id field indicating bit, 3 field indicating bit of address, 4 field indicating bit of address, QoS control field indicating bits, HT Whether control field indicating bit includes corresponding field in indicating respectively the first packet which is located；Take in first packet Band stream configured information, the stream configured information are configured in signaling field or frame control field；The stream configured information indicates the One packet is the packet of complete mac frame head packet or the compression mac frame head comprising stream field.

15. websites as claimed in claim 14, including updating block, for according to 3 field indicating bit of address, address 4 One or more in field indicating bit, QoS control field indicating bits, HT control field indicating bits, update the right of local preservation Answer field information.

16. websites as claimed in claim 14, wherein：

The stream field includes flowing stop bits；The stream stop bits is used to indicate whether to terminate the use of traffic identifier.

17. websites as claimed in claim 14, wherein field information be 3 field of address, 4 field of address, QoS control fields or One kind of HT control fields or their combination in any.

A kind of 18. websites, including：

Transmitting element, sends the first packet comprising complete mac frame head or compression mac frame head, and described the to the second website One packet carries complete configured information, or first packet carries complete configured information and the first compression negotiation letter Breath, the complete configured information indicate whether the first packet carries complete mac frame head, and the compression mac frame head includes frame Control field, compression control field and Sequence Control field, wherein, the compression control field is indicated comprising time domain/id field One kind of position, 3 field indicating bit of address, 4 field indicating bit of address, QoS control fields indicating bit or HT control field indicating bits Or their combination in any；The time domain/id field indicating bit, 3 field indicating bit of address, 4 field indicating bit of address, QoS controls Whether field indicating bit processed, HT control field indicating bits include corresponding field in indicating respectively the first packet which is located；

Receiving unit, receives the response message that the second website feeds back the first packet, obtains the second compression association in response message Business's information, in the case of the second compression negotiation message is effective, keep the local packed field preserved in mac frame head constant or Person is updated.

19. websites as claimed in claim 18, wherein：

The complete configured information indicates whether the first packet carries complete mac frame head, when complete configured information is effective, First packet carries complete mac frame head；

The complete configured information is configured in the signaling field or frame control field of the first packet.

20. websites as claimed in claim 18, wherein：

When the first packet includes the first compression negotiation information, the first compression negotiation information is indicated whether to the second website Send immediately the first packet and the second packet comprising compression mac frame head；

Signaling field or frame control field of the first compression negotiation information configuration in the first packet.

21. websites as described in one of claim 18-20, including：

Judging unit, before the first packet is sent to the second website, judges whether the first packet is destined to second station Point and be first packet in continuous bag；

Setting unit, the first packet be destined to the second website and first bag in being continuous bag in the case of, arrange the The complete configured information of one packet is effective.

22. websites as described in one of claim 18-20, including：

Judging unit, the first packet be destined to the second website and first bag in not being continuous bag in the case of, judge The second compression negotiation message of response message that the 3rd packet of the second website was sent to before the first packet is sent is It is no effective；

Setting unit, in the case of the second compression negotiation message is effective, arranges the complete configured information of the first packet It is invalid；In the case of the second compression negotiation message invalid, the complete configured information for arranging the first packet is effective.

23. websites as claimed in claim 22, including：

In the case where the complete configured information for arranging the first packet is invalid, the first packet configuration compression mac frame head；It is described Compression mac frame head includes frame control field, Sequence Control field and compression control field.

24. websites as claimed in claim 22, including：

In the case of the complete configured information for arranging the first packet is effective, the first packet configures complete mac frame head.

25. websites as claimed in claim 18, including：

Memory element, the local field information preserved in mac frame head, the field information be 3 field of address, 4 field of address, One kind or their combination in any of QoS control fields or HT control fields.

26. websites as claimed in claim 18, including：

Judging unit, judgement is sent to the second website and the field immediately following the mac frame head of the second packet of the first packet is believed The whether available local field information for preserving mac frame head of breath replaces；

Setting unit, in the case that the available local field information for preserving of the field information of second packet replaces, if The compression negotiation message for putting the first packet is effective；When the field of the unavailable local preservation of the field information of second packet The compression negotiation message invalid of the first packet, in the case that information replaces, is set.