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Admission and control method and system for traffic flow applied to wireless communication system

A wireless communication system and admission control technology, applied in the field of 802.16 wireless communication systems, can solve problems such as not being able to adapt to 802.16 networks, and achieve the effects of precise QoS guarantee and high network utilization

Inactive Publication Date: 2010-05-05
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, admission control algorithms based on simple models or fixed thresholds are no longer suitable for 802.16 networks

Method used

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  • Admission and control method and system for traffic flow applied to wireless communication system
  • Admission and control method and system for traffic flow applied to wireless communication system
  • Admission and control method and system for traffic flow applied to wireless communication system

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Embodiment Construction

[0023] figure 1 A schematic diagram of the system of the present invention in an 802.16 wireless communication system is shown. The 802.16 wireless communication system in this figure includes a base station controller 100 and a base station 110 . In the scheme of the figure, a base station controller 100 and a base station 110 are connected.

[0024] The part of the base station 110 related to admission control includes a MAC PDU payload flow measurement unit 111 and a slot occupancy rate measurement unit 112 . The MAC PDU payload flow measurement unit measures in real time the MAC PDU payload sent / received by the base station 110 per frame (removing the MAC header overhead), specifically, the scheduler counts the sum of the bandwidth allocated for the upstream and downstream industry logistics in each frame (number of bits ), then divided by the frame period to obtain the MAC PDU payload flow represented by bit / s. 111 sends the MAC PDU payload flow report 113 to the base s...

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Abstract

The method comprises: measuring the payload throughput of MAC service stream and the slot occupation rate of PHY layer; when receiving the admission request, the system estimates the system equivalentbandwidth according to the current service stream MAC PDU payload through put and the slot occupation rate of PHY layer; the system estimates the bandwidth required by the already- admitted service and the service to be admitted; according to the service types, the system selects the overloading threshold; according to the current system load, the system makes decision whether or not receiving the service stream. The invention also provides a system thereof comprising a bandwidth measuring module located in the base-station, a system equivalent valid bandwidth estimating unit located in the base-station, a service stream bandwidth requirement estimating unit and an admission deciding unit.

Description

technical field [0001] The present invention relates to an 802.16 wireless communication system, in particular to a method and system for service flow admission control in the 802.16 wireless communication system. Background technique [0002] The MAC layer (Medium Access Control layer) of the IEEE802.16 protocol has a strict QoS (Quality of Service, Quality of Service) guarantee mechanism. Each service flow has a QoS attribute, and the system allocates bandwidth resources for the service flow according to the QoS of the service flow. Admission Control (Admission Control), that is, to determine whether to admit new business flows or further resource requirements of existing business flows according to the current load status, and to ensure the QoS of all business flows by controlling the number of business flows served by the network at the same time It is required that the sum does not exceed the upper limit that the network can carry, otherwise, the QoS of the accessed se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L29/08
CPCH04W28/16
Inventor 李云乔江华俊
Owner ZTE CORP
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