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Method and apparatus for managing multi-carrier TDD ascending HARQ course

A multi-carrier and process technology, applied in the field of HARQ process management, can solve the problem of management only for a single carrier, achieve flexible use and data transmission, and improve system transmission efficiency

Inactive Publication Date: 2009-01-14
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a method for managing the HARQ process of multi-carrier TDD uplink, so as to overcome the disadvantage that the HARQ process management in the prior art HSUPA system is only for a single carrier, and realize the support of the HSUPA system for multiple carriers

Method used

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  • Method and apparatus for managing multi-carrier TDD ascending HARQ course
  • Method and apparatus for managing multi-carrier TDD ascending HARQ course
  • Method and apparatus for managing multi-carrier TDD ascending HARQ course

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specific Embodiment 1

[0055] The following takes LCR TDD as an example to illustrate the implementation process of the present invention. Such as figure 2 As shown, each step is described as follows:

[0056] Step 201: the network allocates resources for the terminal.

[0057] When allocating resources, factors such as user traffic, service priority, and channel conditions are usually considered. The allocated resources include carrier time slots and code channels, as well as allowed transmission power. The number of carriers cannot exceed the terminal's support capability. In addition, resources for non-scheduled transmission are pre-allocated by RNC or Node B, while resources for scheduled transmission are dynamically allocated by Node B. If a TTI (or subframe) of a certain carrier has pre-allocated resources for non-scheduled transmission, the carrier is not allowed to re-allocate resources for scheduled transmission.

[0058] Step 202: The terminal assembles data packets according to the al...

specific Embodiment 2

[0074] Such as image 3 shown, including:

[0075] Step 301: The terminal assembles data packets according to the uplink resource allocated by the network side, and selects a suitable HARQ process for each data packet. When the terminal selects the HARQ process, each data packet does not distinguish the nature of the transmission, and is selected uniformly in the resource pool of a HARQ process;

[0076] Step 302: The terminal uses the selected HARQ process to send the corresponding data packet on the uplink resource allocated by each carrier;

[0077] Step 303: the base station receives data on the corresponding resource, and submits it to the corresponding HARQ process for processing;

[0078] According to the HARQ process id carried on the control channel, it is submitted to the corresponding process. In the corresponding process, if the data packet is a new data packet, it is directly decoded. If the decoding is correct, it is submitted to the upper layer for processing ...

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Abstract

The invention discloses a method for managing multi-carrier TDD uplink HARQ to solve problem that existing single-carrier system defined process number and process management method can not directly apply to multi-carrier system. The method comprises that terminal assembles data pack according to uplink resource network side allocates, and unitedly selects mixed automatic retransmission HARQ process for each data pack; terminal transmits corresponding data pack on uplink resource each carrier allocates using above selected HARQ process. The invention also provides terminal and network side device for managing multi-carrier TDD uplink HARQ process, thereby accomplishing united management for multi-carrier HARQ process in HSUPA system, promoting system transmission efficiency.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a HARQ process management method and device applicable to the uplink of a multi-carrier TDD system. Background technique [0002] In order to meet the increasing demand for uplink data services, 3GPP has introduced HSUPA (High Speed ​​Uplink Packet Access) technology to increase the data transmission rate in the uplink direction. In the existing 3GPP technical standards, regardless of FDD (Frequency Division Duplex) or TDD (Time Division Duplex), uplink terminals only support one carrier, and FDD can provide an uplink peak rate of 5.7Mbps, while LCR TDD (low chip Rate time division duplex) uplink can only provide a peak rate of 2.2Mbps. In order to enable TDD to obtain an uplink rate equivalent to that of FDD, it may be considered to introduce a technology for parallel transmission of multiple uplink carriers. For example, when three uplink carriers are used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/00
Inventor 高卓胡金玲
Owner CHINA ACAD OF TELECOMM TECH
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