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High-speed downlink packet access channel resource distributing method

A channel resource and allocation method technology, applied in the field of channel resource allocation for high-speed downlink packet access, can solve problems such as unoptimized system performance and increased downlink interference, and achieve the effects of reducing interference, improving system capacity, and ensuring consistency

Active Publication Date: 2008-05-28
张家港信工企业管理咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Therefore, the disadvantage of the existing technology is: when the channel code resource is insufficient, the channel resource under the secondary scrambling code is directly allocated to the new access user. After the secondary scrambling code is allocated, the downlink interference increases, and the system performance is not optimized.

Method used

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  • High-speed downlink packet access channel resource distributing method
  • High-speed downlink packet access channel resource distributing method
  • High-speed downlink packet access channel resource distributing method

Examples

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Embodiment Construction

[0032] The operating principle of the present invention is as follows: when the downlink channel resources are insufficient, only the main scrambling code is allocated to the high-speed downlink packet access (HSDPA, High Speed ​​Downlink Packet Access) users, and the reference channel directly adopts the main common pilot channel modulated by the main scrambling code. (P-CPICH, Primary Common PilotChannel), the measurement of the channel quality indicator (CQI, Channel Quality Indicator) can reflect the channel quality when the HS-DSCH channel refers to the transmit power, without adding the auxiliary common pilot channel of the reference test channel ( S-CPICH, Secondary Common Pilot Channel) to reduce system interference. In order to support HSDPA users using the primary scrambling code to modulate, it is necessary to reconfigure the multiple dedicated channel users that have accessed to use the secondary scrambling code modulation. Both the primary and secondary scrambling ...

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Abstract

The invention relates to a channel resource allocation method for high-speed down grouping access, which comprises: 1) according to resource request, the system decides whether there is residual for spread-spectrum code resource of primary interference code in down channel; if yes, system allocates said spread-spectrum code resource to access user, and ends the process; or else, the system determines the user special channel on down channel, relocates as auxiliary interference code, and releases spread-spectrum code resource of primary interference code; 2) the system allocates said spread-spectrum code resource to access user in high-speed down grouping. This invention reduces interference of down channel, and improves system throughout.

Description

technical field [0001] The present invention relates to a channel resource allocation method, in particular to a channel resource allocation method for high-speed downlink packet access. Background technique [0002] In order to reduce the non-orthogonal interference between the multipaths of the downlink signal, in the Wide-band Code Division Multiple Access (WCDMA, Wide-band Code Division Multiple Access) system, the downlink signal is generally scrambled and modulated with the primary scrambling code, and the positive scrambling code is used for different channels. Differentiated by the spread spectrum code. The received signal-to-noise ratio of a single channel at the user equipment (UE, UserEquipment) end is: [0003] SNR = S I or * ( 1 - α ) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/38H04W72/04H04W74/00
Inventor 汪少波
Owner 张家港信工企业管理咨询有限公司