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Carrier distribution method and apparatus for high speed downlink packet access technology

A carrier allocation and downlink technology, applied in the field of carrier allocation in high-speed downlink packet access technology, can solve the problems of data retransmission, transmission block errors, waste of system resources, etc., to avoid data retransmission and waste. Effect

Active Publication Date: 2008-01-02
XIAOMI INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If in a certain transmission time interval (TTI, Transmission Timing Interval), the time slot where the HS-SICH used by the UE already has two activated code channels, the UE cannot feed back uplink control information to the NodeB through the HS-SICH, If the NodeB does not receive the feedback information from the UE, it will think that the transmission block is wrong and retransmit the data. This unnecessary data retransmission will cause a waste of system resources.
[0004] It can be seen that when NodeB performs resource allocation and scheduling, because it does not consider the impact of the limitation of the uplink active code channel on HS-SICH, it may cause unnecessary data retransmission, resulting in waste of system resources

Method used

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  • Carrier distribution method and apparatus for high speed downlink packet access technology
  • Carrier distribution method and apparatus for high speed downlink packet access technology
  • Carrier distribution method and apparatus for high speed downlink packet access technology

Examples

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Embodiment 1

[0072] Embodiment 1 is mainly for single-carrier HSDPA, a method in which the NodeB allocates carrier resources for the UE according to the activation time and number of code channels other than the HS-SICH in each uplink time slot of the UE. The method of the present invention is also applicable to the case of multi-carrier HSDPA. The method of the present invention will be further described in detail by taking the case of multi-carrier HSDPA as an example below.

Embodiment 2

[0073] Embodiment 2, referring to FIG. 2, a method for carrier allocation in high-speed downlink packet access technology, including:

[0074] Step 201:

[0075] After the NodeB determines the scheduled UE, it will pre-allocate the carrier for the UE and establish the carrier set for the UE. The specific process includes:

[0076] The NodeB determines UE1 to be scheduled, pre-allocates four carriers for UE1, respectively: carrier 1, carrier 2, carrier 3 and carrier 4, and establishes carrier set 1 of UE1, and the four carriers all belong to carrier set 1. The actual carrier allocated for UE1 is selected from carrier set 1.

[0077] It is possible that UE1 actually needs 3 carriers, but due to the possibility of control channel selection failure, the number of carriers in the carrier set pre-allocated by the NodeB for UE1 may be greater than the number of carriers required by the UE1.

[0078] Step 202:

[0079] The NodeB selects a carrier in the carrier set, and determines ...

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Abstract

The invention discloses a method for carrier distribution in high-speed descending chain group access technique, comprising that a base station NodeB selects carrier from a carrier group distributed for a user device UE, and distributes the carrier meeting preset condition to the UE. The invention also discloses a relative device.

Description

technical field [0001] The present invention relates to high-speed downlink packet access technology, in particular to a method and device for carrier allocation in the high-speed downlink packet access technology. Background technique [0002] In order to meet the growing demand of multimedia services for high-speed data transmission, in order to improve the user's peak data transmission rate and system throughput, the third-generation mobile communication system introduces High Speed ​​Downlink Package Access (HSDPA, High Speed ​​Downlink Package Access) technology. HSDPA introduces a high-speed downlink shared channel (HS-DSCH, High Speed ​​Downlink SharedChannel), respectively introduces a shared channel in the uplink and downlink of the physical layer, that is, the shared information channel (HS-SICH, Shared Information Channel for HS-DSCH) and The shared control channel (HS-SCCH, Shared Control Channel for HS-DSCH) directly and quickly completes the information exchan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L27/26H04Q7/38H04B7/26H04W72/04
Inventor 高卓胡金玲
Owner XIAOMI INC
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