Self interference admission control method of CDMA system

An admission control and code division multiple access technology, which is applied in code division multiplexing systems, access restriction, multiplexing communication, etc. It does not consider the particularity of non-real-time business and business priority, etc., to achieve the effect of improving system operation efficiency and system resource utilization, good flexibility and adaptability, and ensuring service quality

Inactive Publication Date: 2009-02-18
ZTE CORP
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Problems solved by technology

This method is a typical second-generation single service and symmetric service admission control method, and only measures the received signal strength of the uplink base station; these methods do not consider the amount of power increase when calculating the power required for call services, let alone asymmetric services In the problem of separate admission control for uplink and downlink, because uplink and downlink measurement and load margin calculation methods are different, the particularity of non-real-time service admission and service priority are not considered, that is, service QoS is not used as a key point of admission control The main factor is that it cannot meet the diversified requirements of the mixed business of the third-generation system at all, and it does not consider the optimization of the mixed business combination to achieve efficient operation.

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  • Self interference admission control method of CDMA system
  • Self interference admission control method of CDMA system
  • Self interference admission control method of CDMA system

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Embodiment Construction

[0040] The functional modules of the present invention are embodied in the radio network controller RNC (Radio Network Controller) by software, and many base stations (cells) are controlled and managed by the RNC. In conjunction with the steps of the present invention, the above method is further described in detail with an embodiment:

[0041] Step 1: First extract the source rate R and the required signal-to-noise ratio E b / N 0 value, priority level and calling user's identity (ID) value, signal-to-noise ratio is different according to different data services, for example: 8kbps, 12.2kbps voice QoS parameters are different from 64kbps, 144kbps, 384kbps and other data services, The average signal-to-noise ratio requirement for voice is about 5dB, and the corresponding block error rate (BLER) is 1 percent, while the average signal-to-noise ratio requirement for data such as 64kbps, 144kbps, and 384kbps is 3.5dB;

[0042] The second step: according to the principle of self-i...

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Abstract

Based on CDMA self-interference principle, building mathematic model of mixed service obtains solution of upward received power after power rising of each service so as to calculate out upward received total power of system. Comparing the total power value with admission control threshold determines whether the preset calling request can be accepted. The method is not dependent on the measured value for system upward total received power reported from base station so as to prevent inference of measured error. Moreover, the method is very suitable to condition, in which ratio of signal to noise is changed in real time.

Description

(1) Technical field [0001] The present invention relates to a self-interference admission control method for a code division multiple access system, in particular to an admission control method for a WCDMA: Wide-band Code Division Multiple Access (WCDMA: Wide-band Code Division Multiple Access) system in the case of mixed services, belonging to the first Three generation mobile communication system (3G) field. (2) Background technology [0002] Mobile communication has developed very rapidly in recent years, and has become a very important part of human life in just a few years. Along with the rapid development of Internet technology, people's thirst for mobile Internet has greatly promoted the development of the third generation mobile communication system (IMT-2000). WCDMA technology is the mainstream technology of the third-generation mobile communication system. Due to the needs of services such as mobile Internet access, compared with the GSM system and the second-gene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/02H04W48/06H04J13/00H04Q7/00
Inventor 黄超邓春梅熊建秋
Owner ZTE CORP
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