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Method for selecting transmission format of enhanced dedicated channel and terminal

A technology that enhances dedicated channels and transmission formats. It is applied in the direction of transmission modification based on link quality, adjustment of transmission rate, wireless communication, etc., to reduce the probability of data retransmission, improve transmission efficiency, and increase system capacity.

Active Publication Date: 2013-03-13
ST ERICSSON SEMICON BEIJING
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  • Claims
  • Application Information

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Problems solved by technology

[0007] Embodiments of the present invention provide a method and a method for selecting a transmission format of an enhanced dedicated channel, which solves the technical problem in the prior art that only physical layer resources are considered when selecting a transmission format of an enhanced dedicated channel

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  • Method for selecting transmission format of enhanced dedicated channel and terminal

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Embodiment Construction

[0046] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0047] Such as figure 1 The method for selecting the transmission format of the enhanced dedicated channel in the embodiment of the present invention mainly includes the following steps:

[0048] Step 101: Determine the first candidate transport format ETFC0 of the enhanced dedicated channel according to the reference point set of the relationship between power and code rate configured by the radio resource control (RRC) layer and the physical resources allocated by the network.

[0049] Step 102, according to the number of bytes occupied by the buffered data amount in the radio link control (RLC) layer, the number of bytes occupied by the scheduling information and the header of the MAC-e protocol data unit, determine the second candi...

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Abstract

The present invention provides a method and a terminal for selecting the transport format of an enhanced dedicated channel (E-DCH). The selecting method includes the following steps: step A, a first candidate transport format ETFC0 of the E-DCH is determined according to the reference point set of the relationship between power and code rate as configured by the radio resource control (RRC) layer, and to physical resources allocated by the network; step B, a second candidate transport format ETFC1 is determined, wherein the ETFC1 is the minimum transport format which can contain the buffer data quantity and scheduling information of the radio link control layer and the packet header of the MAC-e protocol data unit in the RRC layer; step C, if the ETFC1 is less than the ETFC0, the transport format and the modulation mode of the E-DCH are determined according to the required power value when the user terminal uses different modulation modes under the ETFC0 and the required power value when the user terminal uses different modulation modes under the ETFC1. With the application of the present invention, the transport of ineffective data is reduced, and transmission efficiency is improved.

Description

technical field [0001] The invention relates to a third generation mobile communication system, in particular to a method for selecting a transmission format of an enhanced dedicated channel in high-speed uplink packet link access and a terminal. Background technique [0002] With the continuous development of the third generation mobile communication system (The 3rd Generation, 3G), the improvement of the download rate has created many applications with better user experience, but at the same time, due to the limitation of the upload rate, some applications are still restricted, such as Interactive applications such as mobile podcasts and video uploads that require high upload rates. In order to meet the market demand for higher and higher upload rates, 3GPP (3rd Generation Project Partnership), the international standardization organization for third-generation mobile communications, proposed HSUPA (High Speed ​​Uplink Packet Access, High Speed ​​Uplink Packet Access) in i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/58
CPCH04L1/0002
Inventor 刘宇涂成林
Owner ST ERICSSON SEMICON BEIJING