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Method, device and mobile communication system for determining zero correlation zone (ZCZ) length set

A zero-correlation zone and communication system technology, applied in wireless communication, electrical components, etc., can solve problems such as large signaling overhead, no value limit for cyclic shift increment, no specific instructions, etc.

Active Publication Date: 2010-12-22
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] At present, the 3GPP Tdoc "R1-071661-On construction and signaling of RACH preambles" published in March 2007 proposes to use the signal to cyclically shift the incremental value N CS The mobile terminal is notified, but the value of the cyclic shift increment is not limited, so a relatively large amount of signaling overhead is caused
The 3GPP Tdoc "R1-071471-Outstanding issues in random access preamble design for E-UTRA" published in March 2007 gives another relative solution, that is, using 11 values ​​of N CS collection, but does not specify how to choose these values
Therefore, there is currently no feasible solution for selecting a finite set of better ZCZ lengths to ensure a smaller and limited signaling overhead

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  • Method, device and mobile communication system for determining zero correlation zone (ZCZ) length set
  • Method, device and mobile communication system for determining zero correlation zone (ZCZ) length set
  • Method, device and mobile communication system for determining zero correlation zone (ZCZ) length set

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Embodiment Construction

[0030] combine first figure 1 , to describe the overall technical solution of the embodiment of the present invention. Such as figure 1 shown, including:

[0031] Step S101: Determine the length of the root sequence;

[0032] Step S102: Select such a set of zero-correlation zone lengths, for any cell radius, select one of the selected zero-correlation zone length sets that is suitable for this cell and can determine the maximum number of preambles determined by the length of the zero-correlation zone The maximum number of preambles is the closest to the maximum number of preambles determined by the length of the zero-correlation zone that is applicable to this cell and can determine the maximum number of preambles selected from all integer sets, wherein the maximum number of preambles is determined by the root The length of the sequence is determined by the selected zero-correlation zone length.

[0033] In the embodiment of the present invention, it is first necessary to ...

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Abstract

The invention provides a method for determining a zero correlation zone (ZCZ) length set, which comprises the following steps: determining the length of a root sequence; and selecting a ZCZ length set which is characterized in that for any cell radius, the maximum leading quantity determined by one ZCZ length selected from the selected ZCZ length set is most approximate to the maximum leading quantity determined by any one ZCZ length selected from a set of all integers, wherein the maximum leading quantity is determined by the length of the root sequence and the selected ZCZ length. The invention also provides a device, a base station and a mobile communication system for determining the ZCZ length set. In the invention, the selected finite set of the ZCZ lengths needs to meet certain conditions, and a technical scheme for selecting a better finite set of the ZCZ lengths is provided, thereby reducing the cost of signaling.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to a method, a device and a mobile communication system for determining the length set of zero-correlation zones of the random access preamble technology. Background technique [0002] In a mobile communication system, generally, a mobile terminal sends a random access preamble (Random Access Preamble) to a base station to initialize a random access procedure and realize synchronization with the base station. [0003] In "3GPP TS 36.211 v1.0.0-Physical Channels and Modulation (Physical Channels and Modulation)" published in March 2007, it has been determined that each cell has 64 preambles. When the mobile terminal initializes the random access procedure, the mobile terminal needs to send one of the 64 preambles. Alternatively, the mobile terminal can transmit a message to the base station by selecting a specific preamble. [0004] Before sending the preamble, the mobile ...

Claims

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Application Information

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IPC IPC(8): H04W74/08H04W88/02H04W88/08
Inventor 莫里兹·奥斯卡
Owner HUAWEI TECH CO LTD
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