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Design method and device of synchronization access sequence

A design method and auxiliary synchronization sequence technology, applied in the field of communication, to achieve the effect of meeting the synchronization requirements

Inactive Publication Date: 2014-07-02
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the problem that there is no corresponding design to realize the synchronization process of irregular bandwidth, the present invention is proposed. Therefore, the main purpose of the present invention is to provide an improved design scheme of synchronous access sequence to solve the above problems

Method used

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  • Design method and device of synchronization access sequence
  • Design method and device of synchronization access sequence
  • Design method and device of synchronization access sequence

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The first implementation of the variable bandwidth synchronization channel sequence design method is: performing dropping design in units of synchronization sequence sub-blocks. Combine below Figure 4 This implementation is described.

[0063] Figure 4 It is a schematic diagram of the corresponding relationship between the sub-blocks of the secondary synchronization sequence and the resource sub-bands of the regular bandwidth (5, 10MHz) 16m system according to the embodiment of the present invention, as shown in Figure 4 As shown, the DC carrier (Direct Current, DC for short) is used to illustrate, since the SA sequence adopts a scalable design, that is, 5MHz uses 8 sub-blocks {ABCDEFGH}, and each sub-block occupies 54 sub-carriers. In order to support the irregular bandwidth between 5MHz and 10MHz, the subcarriers of the 10MHz system are dropped from both sides in the form of subblocks, such as Figure 4 In the 10MHz system, two sub-blocks are discarded on both s...

Embodiment 2

[0072] The second implementation of the variable bandwidth synchronous channel sequence design method is: taking sub-band as a unit of dropping design.

[0073] According to the 16-system resource mapping method, the available sub-carriers of 5MHZ are divided into 6 sub-bands, and each sub-band occupies 72 sub-carriers. If will Figure 4 In the 10MHz system, two sub-bands are discarded on both sides of the 12 sub-bands, and then Image 6 The non-standard bandwidth of , whose bandwidth is 7.2MHz, at this time, the Sub-block set of SA is S1={H, A, B, C, D, E, F, G, H, A}.

[0074] Similarly, when different numbers of sub-blocks are discarded, the series of non-standard bandwidths shown in Table 3 below are obtained.

[0075] Therefore, when dropping in units of sub-bands, the possible bandwidth series, system resource blocks (subbands) and corresponding SA sub-block sets are:

[0076] Table 3 Non-standard bandwidth series

[0077] The sub-band contained in the irregul...

Embodiment 3

[0082] The third implementation of the variable bandwidth synchronous channel sequence design method is: combining SAsub-block and resource mapping subband size dropping design.

[0083] In this method, the variable bandwidth selects the series design that is closest to the post-dropping bandwidth of the SA sub-block and resource mapping subband size and the non-standard bandwidth, so it is also called a hybrid dropping design.

[0084] At this time, the bandwidth (number of subcarriers) occupied by the system broadcast information channel and the bandwidth (number of subcarriers) occupied by the SA may be different. When the terminal initially accesses, the bandwidth information carried by the PA, that is, the bandwidth information carried by the system broadcast information channel The occupied bandwidth (number of subcarriers) or the bandwidth occupied by SA (number of subcarriers), to determine the bandwidth occupied by SA, first detect the CellID information carried by SA,...

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Abstract

The present invention discloses a method and device for designing synchronization access sequences, and the method includes: configuring the bandwidth of the master synchronization channel in the variable-bandwidth Orthogonal Frequency Division Multiplexing (OFDM) system as fixed bandwidth; performing "tone dropping" to the regular bandwidth occupied by the slave synchronization channel or the system resource block of the regular bandwidth system to obtain the irregular bandwidth; utilizing different sequences of the master synchronization channel to carry the information of the irregular bandwidth on the configured bandwidth of the master synchronization channel. The present invention satisfies the synchronization demand of the system.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method and device for designing a synchronous access sequence. Background technique [0002] As a multi-carrier transmission mode, Orthogonal Frequency Division Multiplex (OFDM for short) converts a high-speed transmission data stream into a set of low-speed parallel transmission data streams, so that the system can control the multipath fading channel frequency The sensitivity of selectivity is greatly reduced, and the introduction of the cyclic prefix further enhances the system's ability to resist Inter-symbol Interference (ISI), in addition to high bandwidth utilization and simple implementation. The application of OFDM in the wireless communication domain is becoming wider and wider, for example, the wireless local area network (Wireless Local Area Network, referred to as WLAN) system, the 802.16e system based on OFDM, and the evolution of the next generation of 802.16e ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L1/00
CPCH04L5/0092H04L5/0007H04L5/0053
Inventor 孙长印方惠英关艳峰孙波
Owner ZTE CORP
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