Reverse load control method

A control method, reverse load technology, applied in the direction of communication between multiple stations, radio/induction link selection arrangement, selection device, etc., can solve the problem of not considering reverse load conditions, stiffness, too mechanical, etc., Achieve the effect of avoiding coverage holes, increasing capacity, and improving reverse capability and stability

Inactive Publication Date: 2008-01-30
HUAWEI TECH CO LTD
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Problems solved by technology

[0005] Although the existing method of judging by using the threshold value of the floor noise rise is relatively simple to implement and the system stability is good, but the threshold is set in a fixed way, which is too mechanical and rigid, and does not consider the introduction of new access users and new rate allocation. The final reverse load situation cannot meet the requirements of effectively utilizing the system's reverse capability under different conditions and environments.

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Embodiment Construction

[0017] The present invention will be described in detail below with specific embodiments and in conjunction with the accompanying drawings.

[0018] When the system receives an access request from a new user or reassigns a rate to an existing user, it must redistribute the rate to change the reverse load. The reverse load of the system can be based on the RSSI (Received Signal Strength Indicator , reverse signal strength) value judgment. This embodiment uses the following steps to control the reverse load, as shown in Figure 1:

[0019] Step 1: Measure the current value of RSSI and calculate the current value of ROT.

[0020] First of all, the current value of RSSI can be directly measured through radio frequency equipment, for example: measured by BTS (Base Transceiver Station, base transceiver station), and then smoothed by a certain filtering algorithm, including arithmetic mean and filtering.

[0021] Then calculate the current value of ROT according to the definition of...

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Abstract

This invention relates to a method for controlling reverse load of a CDMA system including the following steps: when a system distributes new rate, it measures the current value of a reverse signal strength and computes the current value of the basic noise to make sure to carry out the distributed risen value of the basic noise and reverse signal strength value base on the current value of the basic noise to judge the reverse signal strength value and execute the new rate distribution when it does not exceed the preset threshold, otherwise, the original rate is kept and the method also includes that a test system carries out the variable value of the current value of the basic noise after distributing the new rate and records the new value in the statistic list.

Description

technical field [0001] The invention relates to the field of mobile communication, and in particular provides a reverse load control method of a CDMA (Code Devision Multiple Access, Code Division Multiple Access) system. Background technique [0002] The CDMA system is a self-interference system. Multiple terminals use the same frequency to transmit. There is a corresponding relationship between capacity and coverage. The purpose of reverse load control is to maintain the reverse load within a certain range, while ensuring the capacity of the reverse link. Under the premise of this, the stability of the reverse link can be guaranteed, and there will be no large-scale call drop and network drop in the system due to the problem of reverse load. Therefore, the control method of reverse load has a great impact on system performance. [0003] The reverse load overload of a CDMA system is generally determined by the ROT (rise over thermal) value. The current solution uses a judgme...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04Q7/38
Inventor 聂际敏戚浩峰
Owner HUAWEI TECH CO LTD
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