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A transmission method and system for media access control protocol data unit

A media access control and protocol data unit technology, which is applied in the field of media access control protocol data unit transmission, can solve problems such as resource waste, and achieve the effect of reducing header overhead and saving resources

Active Publication Date: 2008-04-23
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention provides a medium access control protocol data unit transmission method and system, which are used to solve the problem of waste of resources when transmitting MAC PDUs in the prior art

Method used

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  • A transmission method and system for media access control protocol data unit
  • A transmission method and system for media access control protocol data unit
  • A transmission method and system for media access control protocol data unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1: There are four RLC PDUs in the MAC layer that need to be transmitted to the physical layer at the same time. These four RLC PDUs are retransmitted AMDPDU1, newly generated AMDPDU2, STATUS PDU and AMD PDU3, wherein AMD PDU1, AMD PDU2 and STATUS All PDUs have business type 1, and AMD PDU3 has business type 2.

[0057] In this embodiment, AMD PDU1, AMD PDU2 and STATUS PDU with the same service type all enter the MAC layer through logical channel 1, and AMD PDU3 enters the MAC layer through logical channel 2, and the MAC layer encapsulates these four RLC PDUs into MAC PDUs and transmits them to the physical layer, such as image 3 As shown, the MAC PDU includes a MAC header field MAC HD and a MAC payload field MAC PL, wherein the MAC header field MAC HD contains a logical channel identification field DDI1, an information indication field, and an end identification field F2 for logical channel 1, and the DDI1 field stores The identification information of the ...

Embodiment 2

[0060] Embodiment 2: In the MAC layer, there is only one RLC PDU, AMD PDU1, to be transmitted to the physical layer, and at the same time, the MAC layer has a MAC control PDU that needs to be sent to the peer layer.

[0061] In this embodiment, AMD PDU1 enters the MAC layer through logical channel 1, and the MAC layer encapsulates the AMD PDU1 and MAC control PDU into a MAC PDU and transmits it to the physical layer, such as Figure 4 As shown, the MAC PDU includes a MAC header field MAC HD and a MAC payload field MAC PL, wherein the MAC header field MAC HD contains a logical channel identification field DDI1, an information indication field, and an end identification field F2 for logical channel 1, and the DDI1 field stores The identification information of the logical channel 1, and the F2 field stores the information identifying that this field is followed by the DDI0 field. The information indication field includes a first indication field LI and a second indication field ...

Embodiment 3

[0063] Embodiment 3: There is no RLC PDU to be sent in the MAC layer, but the MAC layer itself has a MAC control PDU to be sent.

[0064] In this embodiment, only the MAC control PDU needs to be sent in the MAC layer, such as Figure 5 As shown, the MAC header field of the MAC PDU has only one special channel identification field DDI0 identifying the MAC control PDU carried in the MAC PDU; the MAC payload field has only one control information field SI, which stores the MAC control PDU.

[0065] see Figure 6 , the present invention provides a medium access control protocol data unit transmission system, the system includes more than one bearer unit 61, encapsulation unit 62, transmission unit 63 and physical unit 64, wherein the bearer unit 61 is used to transmit the RLC PDU Sent to the encapsulation unit; encapsulation unit 62, for encapsulating the RLC PDU into a MAC PDU comprising a MAC header field and a MAC payload field, for each bearer unit transmitting the RLC PDU, t...

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Abstract

The disclosed method is in use for solving issues existed in current technique that overhead of media access control protocol data unit (MAC PDU) in use for transmission is quite larger; and resource waste is caused by MAC PDU unable to carry wireless link control protocol data unit (RLC PDU) and MAC PDU at same time. Following format is accepted in the method: MAC PDU includes MAC head field and MAC load field are pointed to each logic channel of transmitting RLC PDU; the MAC head field includes a logic channel ID field (LCIDF) and information indication field (IIF); LCIDF saves ID information of the logic channel, and IIF saves information of all RLC PDU transferred by logic channel. The invention also discloses transmission system of MAC PDU. The invention saves overhead of head of MAC PDU, and reduces resource waste.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and system for transmitting media access control protocol data units. Background technique [0002] The Long Term Evolution (LTE) architecture of the 3rd Generation Partnership Project (3GPP) includes a Radio Link Control (RLC) layer, a Media Access Control (MAC) layer, and a Media Access Control (MAC) layer. ) layer and physical layer, the RLC Service Data Unit (Serving Data Unit, SDU) entering the RLC layer is encapsulated by the RLC layer to form an RLC Protocol Data Unit (Protocol Data Unit, PDU), and different RLC PDUs can correspond to different services RLC PDUs of the same type and service type enter the MAC layer through the same logical channel. The RLC PDUs entering the MAC layer are encapsulated to form a MAC PDU. The MAC PDU enters the physical layer through the physical channel. At the same time, the MAC layer itself needs to send Layer MAC ...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L29/06H04L12/56H04L1/18H04W28/06
Inventor 李裕国吴松毕海洲
Owner DATANG MOBILE COMM EQUIP CO LTD
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