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Signature sequence of sending structure of implying userí»s control information, transmitting and receiving method

A signature sequence and control information technology, applied in user identity/authority verification, wireless communication, communication between multiple stations, etc., can solve problems such as waste of reserved resources and unreliable performance, and achieve overcoming interference and reliable transmission way, to achieve the effect of low complexity

Active Publication Date: 2007-12-26
上海赟璟信息技术有限公司
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AI Technical Summary

Problems solved by technology

Since the random access channel is based on user competition, when the user's signature sequence and control information are sent together, there are two main problems: 1) The performance of direct transmission of control information on an asynchronous channel is unreliable
And once a collision occurs between users, these reserved resources will be wasted, that is, the user needs to re-initiate the access

Method used

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  • Signature sequence of sending structure of implying userí»s control information, transmitting and receiving method
  • Signature sequence of sending structure of implying userí»s control information, transmitting and receiving method
  • Signature sequence of sending structure of implying userí»s control information, transmitting and receiving method

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Experimental program
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Embodiment Construction

[0034] As shown in Figure 1, a transmission structure of a user signature sequence and a signature sequence of hidden user control information includes two user signature sequences and two signature sequences of hidden user control information, and the The time-domain cyclic shift is an integer multiple of the cyclic shift step size N, and the control information is located at the integer multiple. In this way, the user's control information is implicit in the user's signature sequence that has been cyclically shifted in the time domain.

[0035] Wherein, the user signature sequence may be its own cyclically shifted version. That is, during synchronous random access, the user's signature sequence can also be expanded by using a cyclically shifted version of the original user signature sequence to reduce the probability of user collision. In this way, on the basis of the user's cyclically shifted user signature sequence, a cyclic shift is performed as a control information sym...

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Abstract

The mentioned sending structure includes a user signature sequence (USS) and user-control info (UCI). The time domain circular shift, between the mentioned signature sequence with implicit user-control info and USS, is an integer multiplied by Ns, the step length of circular shift. At the integer locates the control info. This invention provides a reliable way to transmit user-control info in the multi-user competing channel. It takes full advantage of the excellent related characteristics of the Zadoff-chu sequence to overcome interference from multi-user. In addition, this invention can be simply realized. Due to the sameness of the detection of the user signature sequence (USS) with a special structure as the detection of the traditional USS, the former USS can carry user-control information without adding extra complication to the user detection.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to the air signal transmission technology in multi-carrier communication. Background technique [0002] In a wireless communication system, due to the rectangular frequency spectrum of Orthogonal Frequency Division Multiplexing (OFDM) and the low integration of the system brought about by the use of Fast Fourier Transform (FFT), it can effectively improve the efficiency of the downlink at a relatively high spectral efficiency. system capacity, coverage and data transmission speed. As a broadband data communication technology, OFDM has been widely used in various radio frequency environments, such as high-speed digital subscriber loops (HDSLs), asymmetric digital subscriber loops (ADSLs), and digital broadcasting. OFDM divides the complete frequency band into many parallel sub-carriers, which are used to transmit parallel data streams. Since the guard time slot is in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04B1/707H04Q7/38H04L9/32H04L27/26H04W74/08
Inventor 周平李力李明齐胡宏林张小东王海峰
Owner 上海赟璟信息技术有限公司
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