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Mixing automatic retransmission method in accessing down going packet in high speed and multiple carriers, and application

A hybrid automatic retransmission, multi-carrier technology, applied in the field of mobile communication, to achieve the effect of reducing equipment cost, reducing memory requirements, usage and flexible data transmission

Active Publication Date: 2007-02-21
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to provide a hybrid automatic retransmission method in multi-carrier high-speed downlink packet access, to overcome the disadvantage that HARQ process management in the prior art HSDPA system is only for a single carrier, and to realize the support of the HSDPA system for multi-carriers

Method used

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  • Mixing automatic retransmission method in accessing down going packet in high speed and multiple carriers, and application
  • Mixing automatic retransmission method in accessing down going packet in high speed and multiple carriers, and application
  • Mixing automatic retransmission method in accessing down going packet in high speed and multiple carriers, and application

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no. 1 example

[0070] refer to image 3 , image 3 It shows the flow chart of the implementation of the first embodiment of the method of the present invention, including the following steps:

[0071] Step 301: Preset the number of HARQ processes allowed to be used by each carrier.

[0072] The number of HARQ processes allowed to be used by each carrier may be set to be the same or different.

[0073] Step 302: Node B determines the carriers currently available to the scheduled UE and the high-speed downlink packet data to be transmitted by each carrier.

[0074] First, determine the carriers currently available to the scheduled UE, as well as the time slots and code channel resources used on each carrier, and then construct the high-speed downlink packet data transmitted by each carrier. It should be noted that, for the high-speed downlink packet data that needs to be retransmitted, the carrier used for the initial transmission of the high-speed downlink packet data must be used to retra...

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Abstract

The method comprises: the base station determines the carrier wave capable that can be currently used by the scheduled terminal and the high speed downlink packet needing to be transmitted with each carrier wave; allocating the independent HARQ (hybrid automatic repeat request) process for each carrier wave, and determining the ID of the carrier wave and the ID of the allocated HARQ process; on the allocated HARQ process, transmitting the high speed downlink data to its corresponding carrier wave; sending the notice about the ID of carrier wave and the ID of HARQ process to the terminal; according to the obtained IDs, the terminal sends the received high speed downlink packet data to its corresponding HARQ to process in order to get desired service data.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a hybrid automatic retransmission method and application in multi-carrier high-speed downlink packet access. Background technique [0002] In order to meet the increasing demand for data services, 3GPP Release 5 (Third Generation Partnership Project Release 5) introduced HSDPA (High Speed ​​Downlink Packet Access) technology to increase the data transmission rate in the downlink direction. HSDPA technology is applicable to three different modes of WCDMA FDD (Wideband Code Division Multiple Access Frequency Division Duplex), UTRA TDD (Universal Terrestrial Radio Access Time Division Duplex) and TD-SCDMA (Time Slot-Synchronous Code Division Multiple Access). [0003] The key technologies adopted by HSDPA include: fast packet scheduling, AMC (Adaptive Modulation Coding) and HARQ (Hybrid Automatic Repeat Request). These technologies are jointly implemented by a MAC-hs (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
Inventor 高卓胡金玲
Owner DATANG MOBILE COMM EQUIP CO LTD
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