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User terminal, and data transmission method and apparatus under UM mode

A data transmission method and a technology of a data transmission device, which are applied in wireless communication, electrical components, etc., can solve problems such as efficient transmission of unfavorable data, increase of invalid data, and impact on data transmission efficiency, so as to achieve both data transmission efficiency and calculation overhead, and reduce Invalid data, beneficial to the effect of efficient sending

Active Publication Date: 2016-07-13
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The change in the size of the data packet will cause the sdu_size to be sent on the logical channel to change accordingly. In this case, if the value of pdu_size in the radio bearer cannot be adjusted in time, invalid data will increase, which is not conducive to the efficient transmission of uplink data
[0021] In the prior art, the data sending method in UM mode usually only adjusts the value of pdu_size when the pdu_size is too small to accommodate sdu_size (resulting in encapsulation), and ignores the case where the pdu_size is too large, so there is It may cause the requested memory space to be too large, generate more invalid data, and affect the transmission efficiency of uplink data
This defect is especially obvious in some real-time scenarios (the size of the data packet changes in real time)

Method used

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  • User terminal, and data transmission method and apparatus under UM mode
  • User terminal, and data transmission method and apparatus under UM mode

Examples

Experimental program
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Effect test

Embodiment 1

[0073] As described below, the embodiment of the present invention provides a method for sending data in UM mode.

[0074] refer to figure 1 The flow chart of the data sending method in the UM mode shown is described in detail through specific steps below:

[0075] First of all, the method provided by this embodiment is generally applicable to WCDMA systems, that is, generally applicable to user terminals supporting WCDMA systems.

[0076] Secondly, the method provided by this embodiment is applicable to data transmission in UM mode, that is, to a user terminal supporting data transmission in UM mode.

[0077] In a specific embodiment, the data sending method adopts a high-speed uplink packet access transmission mode for data transmission, and the data transmission method is suitable for supporting data transmission in a high-speed uplink packet access transmission mode user terminal.

[0078] It can be understood that the present invention is not limited to the transmissio...

Embodiment 2

[0119] As described below, an embodiment of the present invention provides a device for sending data in UM mode.

[0120] refer to figure 2 The structural block diagram of the data sending device in the UM mode shown:

[0121] The data sending device under the UM mode includes: a radio bearer establishment unit 201, an sdu_size value unit 202, an optimal value determination unit 203, and a configuration change unit 204; wherein the main functions of each unit are as follows:

[0122] The radio bearer establishing unit 201 is configured to establish a radio bearer for the data packet in response to the received data packet transmission request, and the established radio bearer includes a value of pdu_size, wherein the pdu_size is the length of the protocol data unit;

[0123] The sdu_size value unit 202 is configured to obtain the value of sdu_size corresponding to the data packet from the sending queue 207 in response to the received data packet transmission request, wherein...

Embodiment 3

[0144] As described below, an embodiment of the present invention provides a user terminal.

[0145] The user terminal supports the WCDMA system and supports data transmission in UM mode.

[0146] The difference from the prior art is that the user terminal also includes a data sending device in UM mode as provided in the embodiment of the present invention. Therefore, the user terminal can respond to the received data packet sending request, obtain the value of sdu_size corresponding to the data packet from the sending queue, and determine the optimal value of pdu_size corresponding to the data packet, based on the pdu_size The optimal value is used to send the data packet, so that when the sdu_size changes, the value of the pdu_size in the radio bearer can be adjusted in time, reducing invalid data and facilitating the efficient sending of uplink data.

[0147] In a specific implementation, the user terminal may be a mobile phone.

[0148] Those of ordinary skill in the art...

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Abstract

The invention discloses a user terminal, and a data transmission method and apparatus under a UM mode. The method comprises the following steps: in response to a received data packet transmission request, establishing a wireless bearer for the data packet, and obtaining a sdu_size value corresponding to the data packet from a transmission queue; determining an optimal pdu_size value corresponding to the data packet, wherein the optimal pdu_size value satisfies the following expression: in a pdu_size selectable set, pdu_size>=(sdu_size+li_ size+pdu_hl_size), and the optimal pdu_size value is a pdu_size value enabling pdu_size-(sdu_size+li_size+pdu_hl_size) to be the minimum; and setting the pdu_size value in the wireless bearer to be the optimal pdu_size value. According to the invention when sdu_size is changed, the pdu_size value in the wireless bearer can be timely adjusted, such that invalid data is reduced, and high-efficiency transmission of uplink data is facilitated.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a user terminal and its data sending method and device in UM mode. [0002] Explanation of related terms [0003] UE——UserEquipment——user terminal, referred to as terminal; [0004] RLC——RadioLinkControl——radio link control; [0005] MAC——MediaAccessControl——media access control layer; [0006] PDU——ProtocolDataUnit——protocol data unit; [0007] SDU - ServiceDataUnit - service data unit; [0008] HSUPA - HighSpeedUplinkPacketAccess - high-speed uplink packet access; [0009] GPRS——GeneralPacketRadioService——General Packet Radio Service; [0010] WCDMA——WidebandCodeDivisionMultipleAccess——Wideband Code Division Multiple Access; [0011] TD-SCDMA——TimeDivision-SynchronousCodeDivisionMultipleAccess——Time Division Synchronous Code Division Multiple Access; [0012] LTE - LongTermEvolution - long-term evolution; [0013] GCF - Global Certification Forum -...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
Inventor 杨洪泽夏少华贺元才
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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