Self-organized network frequency spreading allocation method based on time division synchronization code multiple address

A technology of self-organizing network and code division multiple access, which is applied in the field of OVSF code dynamic allocation, can solve problems such as the inability to allocate spreading codes, and achieve the effects of controlling the implementation complexity, preventing broadcast storms, and high code word reuse rate

Inactive Publication Date: 2008-08-13
PANDA ELECTRONICS GROUP +2
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Problems solved by technology

Practical application of these methods in multi-hop ad hoc network for spreading code assignment

Method used

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  • Self-organized network frequency spreading allocation method based on time division synchronization code multiple address
  • Self-organized network frequency spreading allocation method based on time division synchronization code multiple address
  • Self-organized network frequency spreading allocation method based on time division synchronization code multiple address

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] The present invention is based on the specific realization of the ad hoc network spreading code distribution method of time division synchronous code division multiple access including the following steps:

[0059] Step 1: Spreading code OVSF application stage: by exchanging messages on the public control channel and formulating codeword search rules to complete the allocation of spreading codes to new users;

[0060] The second step: the OVSF redistribution stage of the spreading code: redistribute the codewords that generate code blocking;

[0061] Step 3: Spreading code OVSF maintenance stage: By means of exchanging messages on the public control channel, update the spreading code tree information stored by each node;

[0062] Step 4: Spreading code OVSF release stage: according to the spreading code tree, correspondingly release the occupied codeword and its parent code and child code.

[0063] After the network nodes in the self-organizing network based on the TD-...

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Abstract

A Self-organized network spread spectrum code distributing method based on time-dividing synchronous code dividing multi-address (TD-SCDMA) relates to a OVSF code (orthogonal variable spread spectrum factor code) dynamic distributing method used for constructing self-organized network based on TD-SCDMA, specifically implementation comprises steps of: first step: OVSF applying phase: accomplishing distribution of new user spread spectrum code by alternating message on public control channel and making code character searching rule; second step: OVSF re-distributing phase: re-distributing code character generating code block; third step: OVSF maintaining phase: updating OVSF tree information stored by each node by alternating message on public control channel; fourth step: OVSF releasing phase: releasing occupied code character and father code and son code correspondingly according to OVSF.

Description

technical field [0001] The invention relates to a method for dynamically allocating OVSF codes (orthogonal variable spreading factor codes) used in building an ad hoc network based on a TD-SCDMA (Time Division Synchronous Code Division Multiple Access) air interface, belonging to the technical field of mobile communications. Background technique [0002] TD-SCDMA, as one of the technical standards of the third generation of mobile communication in the world, uses a variety of advanced technologies such as time division duplex, uplink synchronization, smart antenna, joint detection and relay handover. Using the TD-SCDMA air interface to build a mobile ad hoc network can not only take advantage of the characteristics of TD-SCDMA time division duplex without making major changes to the interface, but also realize blind filling for the TD-SCDMA cellular network and enrich TD-SCDMA terminals Supported business types. [0003] The OVSF code has the characteristics of orthogonalit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/69H04B7/216H04B1/707H04J13/16
Inventor 许波朱立锋沈连丰夏玮玮胡静牟中平赵安
Owner PANDA ELECTRONICS GROUP
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