Receiving state indication method for A-MPDU (Aggregate-Management Protocol Data Unit) and receiving end device

A technology of receiving status and receiving equipment, applied in the field of communication, can solve the problem of inability to receive status indication of A-MPDU

Active Publication Date: 2017-03-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] To sum up, the existing scheme cannot well indicate the receiving status of the A-MPDU containing MSDU fragments, and the existing scheme has some disadvantages

Method used

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  • Receiving state indication method for A-MPDU (Aggregate-Management Protocol Data Unit) and receiving end device
  • Receiving state indication method for A-MPDU (Aggregate-Management Protocol Data Unit) and receiving end device
  • Receiving state indication method for A-MPDU (Aggregate-Management Protocol Data Unit) and receiving end device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0203] Such as image 3 As shown, an A-MPDU receiving status indication method is provided in an embodiment of the present invention, including:

[0204] S301. The receiving end receives the A-MPDU sent by the sending end;

[0205] S302. When it is determined that there is at least one MAC protocol data unit MPDU in the A-MPDU, which is encapsulated by the fragmentation of the media access control layer server data unit MSDU, the receiving end sends a message indicating the receiving status of the A-MPDU to the sending end confirmation frame;

[0206] The acknowledgment frame includes a fragmentation indication field and a reception status field. The fragmentation indication field is used to indicate that the A-MPDU contains an MPDU encapsulated by MSDU fragmentation. The fragmentation indication field is used to distinguish the type of the confirmation frame. The receiving status field is used to indicate the receiving status of each MPDU in the A-MPDU. The receiving status...

Embodiment 2

[0235] Such as Figure 11 As shown, an A-MPDU receiving status indication method is provided in an embodiment of the present invention, including:

[0236] S1101. The receiving end receives the A-MPDU sent by the sending end;

[0237] S1102, the receiving end sends an acknowledgment frame for indicating the receiving state of the A-MPDU to the sending end, the acknowledgment frame includes a block acknowledgment bitmap field, and each bit in the block acknowledgment bitmap field is used to indicate a MAC protocol in the A-MPDU Receive status of data unit MPDU.

[0238] In this embodiment, the acknowledgment frame may be a BA frame, and the acknowledgment frame is described as a BA frame in the following content. BA frame can be used Figure 6 The frame format of the compressed BA frame shown may also be the frame format of the M-BA frame. Taking the frame format of the compressed BA frame as an example, the block confirmation bitmap field in the compressed BA frame include...

Embodiment 3

[0247] Such as Figure 13 As shown, the embodiment of the present invention provides a method for indicating the receiving state of the MSDU fragment of the media access control layer server data unit, and the interaction process between the sending end and the receiving end is as follows:

[0248] S1301. The sending end sends an A-MPDU including MSDU fragments to the receiving end;

[0249] S1302. The sending end sends a request frame to the receiving end, and the request frame is used to request and indicate the receiving state of the MSDU fragment in the A-MPDU;

[0250] S1303. The receiving end sends a response frame to the sending end, where the response frame is used to indicate the receiving state of the MSDU fragment in the A-MPDU.

[0251] In this embodiment, after the sending end sends the A-MPDU containing MSDU fragments to the receiving end, the receiving end uses the existing BA frame to indicate to the sending end the receiving status of the MPDU encapsulated by...

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Abstract

The invention provides a receiving state indication method for A-MPDUs (Aggregate-Management Protocol Data Units) and a receiving end device and is used for indicating receiving states of the A-MPDUs containing MSDU (MAC Service Data Unit) fragments. The method provided by the invention comprises the steps that a receiving end receives the A-MPDUs sent by a sending end; when it is determined that at least one MPDU (Management Protocol Data Unit) in the A-MPDUs is formed by packaging the fragments of MSDUs, the receiving end sends acknowledgement for indicating the receiving states of the A-MPDUs to the sending end, wherein the acknowledgement comprises a fragment indication field and a receiving state field, the fragment indication field is used for indicating that the MPDUs formed by packaging the fragments of the MSDUs are contained in the A-MPDUs, the receiving state field is used for indicating the receiving state of each MPDU in the A-MPDU, and the set digit of bits in the receiving state field are used for indicating the receiving states of the MPDUs which have the same sequence numbers.

Description

technical field [0001] The present invention relates to the communication field, in particular to an A-MPDU receiving state indicating method and receiving equipment. Background technique [0002] Fragmentation technology is introduced in the 802.11b protocol that supports low-rate data transmission. The so-called fragmentation technology means that the medium access control layer (medium access control, MAC) converts the MAC service data unit (MAC service data unit, MSDU) or MACMAC protocol A data unit (MAC management protocol data unit, MMPDU) is divided into multiple fragments, and each fragment is called a fragment of MSDU or MMPDU. When a segment fails to be received, the segment technology allows only the failed segment to be retransmitted without retransmitting the entire MSDU or MMPDU, which improves the robustness and throughput of the network. [0003] In order to support a higher data transmission rate, the 802.11n protocol introduces an aggregate-MAC protocol da...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0023H04L1/0036H04L1/1614H04L1/1621H04L1/1628H04W72/21H04W28/06
Inventor 淦明刘乐李云波
Owner HUAWEI TECH CO LTD
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