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User scheduling method and device

A technology for user scheduling and scheduling algorithm, applied in digital transmission systems, electrical components, and error prevention. It can solve problems such as wasted time slot resources and no improvement in air interface throughput. The effect of scheduling priority

Active Publication Date: 2014-08-06
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0012] The present invention provides a user scheduling method and device applied to a TD-SCDMA system supporting APE to solve the problem in the prior art that the throughput of the air interface is not improved due to the waste of time slot resources

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Embodiment Construction

[0026] The user scheduling method and device applied to the APE-supporting TD-SCDMA system provided by the present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments.

[0027] In the TD-SCDMA system, after the introduction of the APE feature, the APE user supports multiple uplink time slots, and its average rate is relatively high. According to the existing scheduling method, since the instantaneous rate is determined only according to the signal-to-noise ratio of the channel quality, its participation in The SDL value of the scheduling order decreases instead, resulting in a reduction in its scheduling opportunities, resulting in no increase in the air interface rate.

[0028] In the TD-SCDMA system, the WPF scheduling algorithm needs to be based on the user's instantaneous code rate. After the system introduces the APE feature, for different users, the factors that determine the instantaneous code rate include not on...

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Abstract

The invention discloses a user scheduling method and a user scheduling device, which are applied to a time division-synchronous code division multiple access (TD-SCDMA) system supporting adaptive predictive encoding (APE). The method comprises the following steps of: when a scheduling period is reached, determining the average speed and instantaneous code rates of scheduled users, wherein the instantaneous code rate of each scheduled user is obtained by multiplying an initial code rate mapped with a signal to noise ratio of the scheduled user with a timeslot resource influence factor beta of the scheduled user, the beta of each scheduled user is directly proportional to the TSnum of the scheduled user, and the TSnum of each scheduled user is the maximum total number of evolved physical uplink channel (E-PUCH) timeslot resources which can be occupied by the scheduled user in a current scheduling period; determining a scheduling reference value SDL' of each scheduled user by adopting a weight proportional fair (WPF) algorithm according to the average speed and instantaneous code rate of the scheduled user; and scheduling each scheduled user according to the determined SDL' of each scheduled user. By the method and the device, the data throughput of an air interface can be well improved, and the uplink service awareness of the user can be remarkably improved.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a user scheduling method and device applied to a TD-SCDMA system supporting adaptive predictive coding (APE). Background technique [0002] Compared with WCDMA (Wireless Code Division Multiple Access, Wireless Code Division Multiple Access), CDMA2000, TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access) belongs to the code channel resource limited system, the system Throughput and spectral efficiency are limited by code channel resources. Therefore, improving the utilization efficiency of code channel resources is the key to improving the utilization rate of TD-SCDMA spectrum, and the spectrum utilization rate can be improved by improving the utilization rate of channel code channel resources in various ways. [0003] APE (Adaptive Prencdictive Encoding, Adaptive Predictive Encoding) is an enha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12H04L1/00
Inventor 刘成伟束超
Owner DATANG MOBILE COMM EQUIP CO LTD
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