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

A hybrid automatic retransmission, multi-carrier technology, applied in the field of mobile communication, can solve the problem of only targeting a single carrier, and achieve the effect of flexible use, flexible data transmission, and increased flexibility

Inactive Publication Date: 2007-02-21
CHINA ACAD OF TELECOMM TECH
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AI Technical Summary

Problems solved by technology

[0015] 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

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

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Embodiment Construction

[0047]The core of the present invention is that the Node B establishes a predetermined number of HARQ processes for the scheduled UE, and all carriers that the UE may use share these HARQ processes. When it is necessary to transmit high-speed downlink packet data, the hybrid automatic request module in Node B selects the appropriate HARQ process for each carrier, and at the same time ensures that the conditions are met: for the retransmitted high-speed downlink packet data, use the HARQ used when the PDU was transmitted for the first time process; for newly generated high-speed downlink packet data, select an idle HARQ process; different carriers use different HARQ processes. By carrying the carrier ID and process ID on the control channel to notify the UE of the HARQ process currently used, the HARQ module on the terminal side can send the high-speed downlink packet data to the corresponding HARQ process for processing, thereby realizing the HSDPA system. Carrier support.

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Abstract

The method comprises: the base station presets the amount of HARQ (hybrid automatic repeat request) processes allowed by high speed downlink packet data sent from each terminal, and sends the high speed downlink packet data for the HARQ processes shared by all carrier waves of all high speed downlink packet data from all terminals; informs the carrier wave ID and HARQ process ID both used by the high speed downlink packet data to each terminal; according to the carrier wave ID and HARQ process ID, the terminal sends the received high speed downlink data to the relevant HARQ process to make 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 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 (Media Access Con...

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 CHINA ACAD OF TELECOMM TECH
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