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Data transmission method and device based on MAC (media access control) sublayer and RLC (radio link control) sublayer

A seed layer and device technology, applied in the field of data transmission, can solve problems such as uselessness, and achieve the effect of ensuring transmission performance

Active Publication Date: 2012-02-08
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] During the formulation of the LTE air interface protocol, some detailed interactive operations were included in the implementation category, including how the MAC sublayer and the RLC sublayer operate specifically, and the intersublayer interaction information introduced in the transmission opportunity notification to meet these operational requirements; During the implementation of these contents, specific and feasible solutions need to be determined, but no specific and feasible solutions are used in the prior art

Method used

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  • Data transmission method and device based on MAC (media access control) sublayer and RLC (radio link control) sublayer
  • Data transmission method and device based on MAC (media access control) sublayer and RLC (radio link control) sublayer
  • Data transmission method and device based on MAC (media access control) sublayer and RLC (radio link control) sublayer

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Embodiment 1

[0029] Embodiment 1 of the present invention provides a data transmission method based on the MAC sublayer and the RLC sublayer. This method is applied to devices (such as UEs, network side devices, etc.) that include the MAC sublayer and the RLC sublayer. In this embodiment, In , the MAC sublayer and RLC sublayer data delivery judgment method is proposed, involving the MAC sublayer indicating the necessary judgment input information in the transmission opportunity notification, and the RLC sublayer performing the judgment operation based on the input information, so as to follow and avoid as much as possible Rules for fragmenting and maximizing the amount of data transferred.

[0030] Considering the modularization of each sub-layer of the LTE air interface, when the MAC sub-layer determines the amount of data that can be delivered by each logical channel, if the number and size of RLC SDUs in the transmission buffer maintained by the RLC sub-layer and the retransmission buffe...

Embodiment 2

[0063] Based on the same inventive concept as the above method, an embodiment of the present invention also provides a data transmission device based on the MAC sublayer of the medium access control and the RLC sublayer of the radio link control, such as image 3 As shown, the device includes a MAC sublayer module 11 and an RLC sublayer module 12, wherein:

[0064] The MAC sublayer module 11 is used to determine the amount of data that can be sent on the logical channel and the total amount of data that can be sent by the RLC sublayer of the current transmission opportunity; and send a transmission opportunity notification to the RLC sublayer, the transmission The opportunity notification is used to indicate the amount of data that can be delivered on the logical channel and the total amount of data that can be delivered by the RLC sublayer of the current transmission opportunity;

[0065]The RLC sublayer module 12 is configured to use the amount of data that can be delivered ...

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Abstract

The invention discloses a data transmission method and device based on an MAC (media access control) sublayer and an RLC (radio link control) sublayer. In the method, the MAC sublayer determines quantity of data which can be transmitted on a logical channel and the quantity of data which can be transmitted by the current transmission opportunity RLC sublayer; the MAC sublayer sends a transmission opportunity notice to the RLC sublayer, wherein the transmission opportunity notice is used for indicating the quantity of data which can be transmitted on the logical channel and the quantity of data which can be transmitted by the current transmission opportunity RLC sublayer; the RLC sublayer determines the actual quantity of transmitted data according to the quantity of data which can be transmitted on the logical channel and the quantity of data which can be transmitted by the current transmission opportunity RLC sublayer. In the embodiment of the invention, additional input information is introduced in the transmission opportunity notice and the relevant operations of the RLC sublayer are clear, thus the transmission performance of air interface data can be ensured.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and device based on a MAC (Media Access Control, Media Access Control) sublayer and an RLC (Radio Link Control, Radio Link Control) sublayer. Background technique [0002] In the LTE (Long Term Evolution, Long Term Evolution) RLC sublayer protocol TS36.322, for the services obtained by the RLC sublayer from the lower layer, there are the following regulations: The RLC sublayer obtains two services from the lower layer, namely data transmission and transmission Opportunity notification. The transmission opportunity notification is to indicate the total size of the RLC PDU (Protocol Data Unit, protocol data unit) that the current transmission opportunity can transmit when notifying. In the MAC sublayer protocol TS36.321 of LTE, the data volume division of the UE (User Equipment, user equipment) logical channel is stipulated as follows: [...

Claims

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Application Information

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IPC IPC(8): H04W80/02
Inventor 曾超君刘蓉高卓徐昊
Owner DATANG MOBILE COMM EQUIP CO LTD
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