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Code tree self-adaptive recovery method and apparatus in communication system

A communication system and self-adaptive technology, applied in transmission systems, selection devices, radio transmission systems, etc., can solve the problem that the medium code tree cannot be self-adapted, and avoid over-frequency or too little, and avoid traversal operations. Effect

Inactive Publication Date: 2008-04-09
ZTE CORP
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for self-adaptive restoration of a code tree in a communication system, so as to solve the technical problem that the self-adaptive restoration cannot be performed once a code tree fails in the prior art

Method used

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  • Code tree self-adaptive recovery method and apparatus in communication system
  • Code tree self-adaptive recovery method and apparatus in communication system
  • Code tree self-adaptive recovery method and apparatus in communication system

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] In order to overcome the shortcoming that the self-recovery of the code tree cannot be performed once the code tree fails, the present invention proposes a self-recovery method of the code tree to protect the correctness of the code tree. Fig. 1 is a flow chart of the steps of the inventive method, as shown in Fig. 1, the method for code tree self-adaptive recovery of the present invention comprises:

[0026] Step 100: Once a user release or reconfiguration is completed on the current carrier frequency, judge whether the conditions for starting this process are met, and if so, enter step 200; otherwise, exit;

[0027] Step 200: Traverse each occupied channelization code of each time slot code tree on the current carrier frequency in turn: if ...

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Abstract

The invention provides a method and a device of the adaptive restoration of a code tree in a communication system, wherein the method includes that: Step 1, if channelizing codes are released by users or the reconfiguration of the channelizing codes is accomplished by the users on the current carrier frequency, determining whether the system meets the preset condition, and if it does, execute Step 2, or finishing the procedure; Step 2, examining each occupied channelizing code of all time-slot code trees on the current carrier frequency, and if the examined channelizing code is not the channelizing code used by a public channel or not the channelizing code used by a special user, the examined channelizing code is released. By using the invention, once the code trees have the channelizing codes which are hung abnormally, the system has the ability to release the channelizing codes and restores the code trees normal.

Description

technical field [0001] The invention relates to a time division synchronous code division multiple access system in the field of communication, in particular to a method and a device for self-adaptive restoration of a code tree in the communication system. Background technique [0002] In the TD-SCDMA (Time Division Synchronous Code Division Multiple Access) system, the physical channel is identified by the combination of carrier frequency / time slot / channelization code. The user's business data is carried by physical channels. Therefore, the radio network controller needs to record which users use which channelization codes, that is, the radio network controller must maintain a set of code trees for each time slot of each carrier frequency . The so-called code tree is a collection of channelization codes used on each time slot of each carrier frequency. During the access, release, and reconfiguration processes of each user, as long as the channelization code used by the us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/216H04B1/707H04Q7/38
Inventor 熊伟
Owner ZTE CORP
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