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Midamble shift allocation method and device

A technique of training sequences and allocation methods, applied in the directions of space transmit diversity, communication between multiple stations, diversity/multi-antenna systems, etc., and can solve problems such as offset, no training sequence, etc.

Inactive Publication Date: 2011-10-12
TD TECH COMM TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] If relatively scarce training sequence offsets are allocated to channels with large spreading factors, then for channels with small spreading factors, the optional training sequence offsets are limited to a certain extent, and even lead to no possible offsets at all. selected training sequence offset

Method used

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  • Midamble shift allocation method and device
  • Midamble shift allocation method and device
  • Midamble shift allocation method and device

Examples

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Embodiment Construction

[0048] The allocation process of the training sequence offset proposed by the embodiment of the present invention is as follows: figure 2 As shown, the process is applicable to each training sequence offset in each tree diagram defined under the default training sequence offset allocation mode and the special default training sequence offset allocation mode, and specifically includes the following steps:

[0049] Step 201: According to the hierarchy of the treemap, set the allocation priority of training sequence offsets at each level in the treemap. which is:

[0050] The training sequence offset corresponding to the channel code at the highest layer of the tree diagram (spreading factor is SF=1) has the lowest allocation priority, and the layer number 1 of this layer represents the allocation priority of the training sequence offset located in this layer class.

[0051] The training sequence offset corresponding to the channel code located in the second layer of the tree ...

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Abstract

The invention provides a midamble shift allocation method, which comprises the following steps of: according to levels of a tree graph indicating predefined mapping relationships between midamble shifts and channel codes, setting allocation priorities of the midamble shifts of each level in the tree graph; when the midamble shift is allocated to a channel, determining a spreading factor of the channel code allocated to the channel according to channel resources seized by the channel; searching for the tree graph indicating the predefined mapping relationships between the midamble shifts and the channel codes according to the spreading factor, determining the midamble shifts available for the spreading factor, and selecting all currently idle midamble shifts from the available midamble shifts; and selecting the midamble shift with the highest allocation priority from all the currently idle midamble shifts, and allocating the selected midamble shift to the channel. The invention also provides a midamble shift allocation device. By the scheme provided by the invention, the midamble shift can be easier to allocate to the channel with a relatively lower spreading factor.

Description

technical field [0001] The present invention relates to the field of mobile communication technology, in particular to high-speed packet access technology, in particular to a training sequence offset allocation method and device. Background technique [0002] Currently, a Multi-User (MU) Multiple-Input Multiple-Output (MIMO) technology has been introduced in High Speed ​​Packet Access (HSPA). That is: in the uplink direction, multiple high-speed uplink packet access (HSUPA) user equipment (UE) can share the same scheduling enhanced dedicated channel physical uplink channel (E-PUCH) resources; in the downlink direction, multiple high-speed downlink packet access (HSDPA) UEs can share the same scheduled high-speed physical downlink shared channel (HS-PDSCH) resource. These UEs that share the same scheduling resource (for uplink, share the same scheduling E-PUCH resource, and for downlink, share the same scheduling HS-PDSCH resource) have different training sequence shifts (Mi...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/06H04L25/02H04B7/06H04B7/26
Inventor 魏立梅赵渊沈东栋
Owner TD TECH COMM TECH LTD