Resource unit mapping method and device

A technology of resource unit and mapping method, applied in the field of communication, can solve the problem of long time-consuming mapping process, achieve the effect of scattered and concentrated errors, improve efficiency, and shorten mapping time

Inactive Publication Date: 2016-01-27
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The main technical problem to be solved by the present invention is to provide a resource unit mapping method and device to solve the problem that the entire mapping process takes a long time due to data interleaving in the existing resource unit mapping process

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  • Resource unit mapping method and device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This embodiment provides a resource unit mapping method, please refer to figure 1 , including the following steps:

[0051] Step S101: Interleave the position index sequence of the resource unit to obtain the interleaved resource unit position index sequence;

[0052] Step S102: Map the modulated data in the resource unit according to the interleaved resource unit position index sequence.

[0053] In this embodiment, the interleaving process on the resource unit position index sequence only needs to be performed once during power-on initialization, and does not need to be performed once during each mapping. Among them, there are many ways to interleave the resource unit position index sequence, and this embodiment provides a common way, please refer to figure 2 , the method specifically includes the following steps:

[0054] Step S201: Determine the number of rows and columns of the matrix for interleaving the resource unit position index sequence;

[...

Embodiment 2

[0065] This embodiment takes PDCCH resource unit mapping as an example to illustrate the resource unit mapping method provided by the present invention, where the resource unit position index sequence is: r(0),...,r(M-1).

[0066] Firstly, the resource unit position index sequence is interleaved, and the interleaving process is as follows:

[0067] a) Let C=32 be the number of columns of the matrix, and the sequence numbers of each column of the matrix are 0, 1, 2, ..., C-1 from left to right.

[0068] b) The row number R of the matrix is ​​the smallest integer satisfying the following formula:

[0069] M≤(R×C)

[0070] The serial numbers of each row of the matrix are 0, 1, 2, ..., R-1 from top to bottom. M is the total number of data in the resource unit location index sequence.

[0071] c) If (R×C)>M, add N=(R×C-M) virtual position indexes at the head, so that x k = ,k=0,1,...,N-1. Then, x N+k =r(k)(k=0,1,...,M-1), starting from row 0 and column 0 of t...

Embodiment 3

[0081] This embodiment provides a resource unit mapping device, please refer to image 3 , the device mainly includes: an interleaving module 301 and a mapping module 302; the interleaving module 301 is used to interleave the position index sequence of the resource unit to obtain the interleaved resource unit position index sequence; the mapping module 302 is used to convert the modulated data in the resource unit Mapping is performed according to the interleaved resource unit position index sequence.

[0082] In this example, see Figure 4 The interleaving module 301 also includes a row and column number determination submodule 3011, a data filling submodule 3012, an inter-column replacement submodule 3013 and a sequence reading submodule 3014; the row and column number determination submodule 3011 is used to determine the resource unit position index sequence interleaving The number of rows and columns of the matrix; the data filling sub-module 3012 is used to fill th...

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Abstract

The invention discloses a resource unit mapping method and device. The resource unit mapping method includes: interlacing a position index sequence of a resource unit to obtain an interlaced resource unit position index sequence; and mapping modulation data in the resource unit according to the interlaced resource unit position index sequence. The method provided by the invention omits interlacing of the modulation data of the resource unit, but directly interlaces the position index sequence of the resource unit, thus in mapping of the resource unit, the modulation data that are not interlaced are mapped in one-to-one correspondence according to the interlaced resource unit position indexes, the modulation data in the resource unit are disorganized, thereby achieving the purpose of dispersing concentrated errors generated by bursts in a channel transmission process, reducing interlacing processing from multiple times into one time, and the interlacing processing only needs to run once during power-on initialization, thereby improving efficiency of mapping of the resource unit.

Description

technical field [0001] The present invention relates to the communication field, in particular to a resource unit mapping method and device. Background technique [0002] The process of resource unit mapping mainly includes two steps: Step 1: Interleave the modulated data in the resource unit; Step 2: Map the interleaved modulated data according to the resource unit position index one by one. The problem in this mapping process is: the interleaving process in step 1 is very cumbersome, and interleaving each modulated data in the resource unit will lead to too many times of interleaving, making the entire mapping process time-consuming, which is far from satisfying the requirements of resource units. processing latency requirements. [0003] Taking the resource unit mapping process of PDCCH (PhysicalDownlinkControlChannel, Physical Downlink Control Channel) as an example, the mapping process is as follows: the mapping of resource unit modulated data is performed in groups of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L1/00
Inventor 刘媛媛段庆
Owner ZTE CORP
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