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Scheduling method for wireless group division system

A wireless grouping and scheduling method technology, applied in the field of HSDPA system, can solve the problem of unsatisfactory guarantee of delay, achieve the effect of maintaining proportional fairness, improving system capacity, and guaranteeing delay performance

Inactive Publication Date: 2009-03-18
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, through simulation analysis, it is found that this method is not ideal for delay guarantee

Method used

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  • Scheduling method for wireless group division system
  • Scheduling method for wireless group division system
  • Scheduling method for wireless group division system

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Embodiment Construction

[0021] The present invention is a scheduling method that utilizes the advantages of self-adaptive technology, and it runs on the access node (base station, access point) of the system to control the allocation of wireless resources of all users accessing the system. In general, the present invention allocates resources for the basic purpose of improving system capacity, and when a certain user's hunger counter expires, or when new users access the system, these users are prioritized for scheduling. The resource allocation of the present invention takes time slot as a unit. Before the next scheduling time arrives, the scheduler counts the amount of data queued by each user, and according to the user channel status fed back, decides to allocate the next or several time slots to the user.

[0022] figure 1 It is a flow chart of the present invention. Step 100 completes the initialization work of the method. Step 101 initializes state variables for users newly accessing the system...

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Abstract

This invention relates to a managing method suitable to the wireless sectionalizing system. The method includes following steps: setting the average servicing rate for the users accepted newly in the system to be zero and initializing the hungry counter; determining the requesting servicing rate at the current time-slot for each user; inspecting if the hungry counter of some user has reached the predetermined value, if so, reset the average servicing rate for this user to be zero; selecting the user whose requesting servicing rate is highest among the users whose average servicing rate is zero if there is one or more such uers in order to dispense the resources; giving priority to the users having the largest comparing parameters if all users have the average servicing rates larger than zero.

Description

technical field [0001] The invention relates to a dispatching method applied to a wireless system using self-adaptive modulation technology, especially in CDMA2000 1X EV-Do system and WCDMA HSDPA system. Background technique [0002] In a wireless communication system, users are located at different distances from access nodes (base stations, access points, etc.) and in different noise environments, so the channel states of each user are different. At the same time, due to the influence of changes in environmental factors and user movement, the user's channel state changes with time. These reasons determine the application of adaptive modulation technology in mobile communications. How to give full play to the advantages of adaptive technology has therefore become a basic problem in the design of scheduling methods. [0003] The pure voice mobile communication system simply adopts multiple access methods such as FDMA, TDMA, and CDMA. As long as the voice is connected to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04J13/00H04L12/24H04W72/12
Inventor 张平纪阳李迎阳
Owner BEIJING UNIV OF POSTS & TELECOMM
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