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Retransmission method and device of high-speed uplink packet access terminal

An access terminal, high-speed technology, applied in the field of communication, which can solve the problems of timely retransmission of unfavorable failed transmission blocks and strict regulations on retransmission.

Inactive Publication Date: 2011-06-22
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The retransmission regulations in the existing protocol are too strict, which is not conducive to the timely retransmission of failed transmission blocks

Method used

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  • Retransmission method and device of high-speed uplink packet access terminal
  • Retransmission method and device of high-speed uplink packet access terminal
  • Retransmission method and device of high-speed uplink packet access terminal

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Embodiment Construction

[0061] The main idea of ​​the present invention is to change the authorization conditions, specifically: if it is determined that this transmission is a retransmission process, the terminal uses the TBS of the first transmission as the TBS of this transmission, calculates the transmission power required by the TBS, and subtracts one from the transmission power. The retransmission power offset is used as the transmit power of the current uplink E-PUCH (enhanced physical uplink channel). If the retransmission power offset is set to a specific value, it means that the retransmission process does not need to check the power authorization. The transmit power of the uplink E-PUCH retransmitted this time is equal to the smaller of the maximum transmit power of the UE and the authorized power. Because in the present invention, a retransmission power offset is subtracted from the required transmit power for transmitting TBS in the grant condition, it is easier to satisfy the grant cond...

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PUM

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Abstract

The invention discloses a retransmission method and device of a high-speed uplink packet access terminal; when a terminal is granted with an uplink transmission authorization at a given transmission interval, and if HARQ (hybrid automatic retransmission request) progresses wait for retransmission, for each HARQ progress, when an authorized code resource and a time slot number are judged to be capable of supporting TBS (transmission block size) transmission of the HARQ progress, a retransmission power deviation is subtracted from a transmission power needed by the transmission of the TBS to obtain a transmission power of the uplink E-PUCH (enhanced physical uplink channel); when the transmission power of the uplink E-PUCH is judged to be respectively less than or identical to the maximum transmission power and the authorized power of UE (user equipment) simultaneously, the HARQ process is judged to satisfy the authorized conditions; and the oldest HARQ progress is selected from the HARQ progresses which satisfy the authorized conditions to be retransmitted according to the transmission power of the uplink E-PUCH. The method and device disclosed by the invention are in favor of the timely retransmission of failed transmission blocks.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a terminal retransmission method and device for high-speed uplink packet access. Background technique [0002] In the third-generation mobile communication system, in order to provide higher-speed uplink and downlink packet services and improve spectrum utilization efficiency, high-speed uplink and downlink packet access (HSDPA and HSUPA) technologies are adopted. High-speed uplink packet access HSUPA adds four new physical channels: E-PUCH (E-DCH PhysicalUplink Channel: E-DCH physical uplink channel), E-AGCH (E-DCH Absolute GrantChannel: E-DCH absolute grant channel ), E-HICH (E-DCH Hybrid ARQ Indicator Channel: E-DCH HARQ Indicator Channel), E-UCCH (E-DCH Physical Uplink Channel: E-DCH Uplink Control Channel) and E-RUCCH (E-DCH Random AccessUplink Control Channel: E-DCH random access uplink control channel). Wherein the E-DCH is: Enhanced Dedicated Channel (Enh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04B7/26
Inventor 谢琼刘虎杨宁耿鹏
Owner ZTE CORP
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