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Auxiliary synchronizing channel configuring method and device, and subcarrier mapping method and device

A secondary synchronization channel and synchronization channel technology, applied in the field of communication, to achieve the effect of optimizing performance

Active Publication Date: 2010-07-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, no effective solution has been proposed for how to design synchronization channels to achieve the cell ID information of different types of base stations and to meet the expansion requirements of Femto base stations under the premise of maintaining synchronization channel design

Method used

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  • Auxiliary synchronizing channel configuring method and device, and subcarrier mapping method and device
  • Auxiliary synchronizing channel configuring method and device, and subcarrier mapping method and device
  • Auxiliary synchronizing channel configuring method and device, and subcarrier mapping method and device

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Embodiment 1

[0078] In this embodiment, a method for configuring a secondary synchronization channel is provided to configure the synchronization signal on the S-SCH in an orthogonal frequency division multiplexing system.

[0079] Such as image 3 As shown, the S-SCH configuration method according to this embodiment includes: step S302 and step S304. It should be noted that the steps described in this method can be executed in a computer system such as a set of computer-executable instructions, and, although in image 3 The logical order is shown in, but in some cases, the steps shown or described can be performed in a different order than here.

[0080] The following will describe image 3 The processing shown in.

[0081] Step S302, configuring a first basic sequence set used to represent each combination of cell ID and sector ID carried by the S-SCH of the macro base station; and / or

[0082] Step S304: Configure a second sequence set representing each combination of the cell ID and sector ID o...

Embodiment 2

[0133] In this embodiment, a method for configuring a secondary synchronization channel is provided to configure the synchronization signal on the S-SCH in an orthogonal frequency division multiplexing system.

[0134] Such as Picture 10 As shown, the method for configuring the secondary synchronization channel according to this embodiment includes step S1002 and step S1004.

[0135] Picture 10 The process shown in is as follows:

[0136] Step S1002, dividing the cell ID information carried in the synchronization signal into multiple ID subsets according to the system configuration information;

[0137] Step S1004: For each ID subset, a type sequence set for representing its type and a basic sequence set for representing IDs in the subset are configured.

[0138] In other words, each of the above ID subsets is represented by a combination of two different sequence sets. One sequence is the basic sequence set, which represents the cell ID in the subset, and the other is the type sequen...

Embodiment 3

[0173] In this embodiment, a sub-carrier mapping device is provided for mapping the synchronization sequence of the S-SCH in the orthogonal frequency division multiplexing system to the sub-carriers, where it is assumed that the number of useful sub-carriers is L.

[0174] Such as Picture 12 As shown, the subcarrier mapping apparatus according to this embodiment includes a first mapping module 122 and a second mapping module 124.

[0175] Picture 12 The functions of each module are as follows:

[0176] The first mapping module 122 is configured to perform subcarrier mapping of different sectors on subcarriers with subcarrier sequence numbers less than L / 2 according to the following formula:

[0177] x(n)=x(3u+k), k=0,1,2.u=0,1,2,...,

[0178] Among them, k represents the sector number, and u represents the element number in the sequence;

[0179] The second mapping module 124 is configured to perform subcarrier mapping for different sectors on subcarriers with subcarrier sequence numbe...

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Abstract

The invention discloses auxiliary synchronizing channel configuring method and device as well as subcarrier mapping method and device. The configuring method for auxiliary synchronizing channels comprises the following steps of: configuring a first basic sequence set of each combination of district ID and sector ID carried by the auxiliary synchronizing channel for expressing a macro base station; and / or configuring a second basic sequence set of each combination of district ID and sector ID of the macro base station for expressing a family base station, and a family base station ID sequence set for expressing the ID information of the family base station. The invention can map the information in synchronous signals on the auxiliary synchronizing channel of an orthogonal frequency division multiplexing system by the sequences in the sequence set, generate the synchronous signal, clearly identify the types and ID information of each base station and flexibly adapt to various changes of the base stations, and is beneficial to optimizing the system property.

Description

Technical field [0001] The present invention relates to the field of communications, and in particular, to a method and device for configuring a secondary synchronization channel, a method and device for subcarrier mapping, and a method and device for transmitting a synchronization signal of a secondary synchronization channel. Background technique [0002] Orthogonal Frequency Division Multiplex (Orthogonal Frequency Division Multiplex, OFDM for short) is a multi-carrier transmission mode. This technology can effectively reduce the system's sensitivity to multipath fading channel frequency selectivity by converting a high-speed transmission data stream into a group of low-speed parallel transmission data streams; by introducing a cyclic prefix, it can also enhance the system's resistance to inter-symbol interference (Inter-symbol Interference, referred to as ISI) capabilities; in addition, this technology also has the characteristics of high bandwidth utilization and simple impl...

Claims

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Application Information

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IPC IPC(8): H04W56/00H04B7/26H04L27/26
CPCH04L5/0053H04L5/0037
Inventor 孙长印方惠英王文焕曲红云鲁照华
Owner ZTE CORP
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