Self-adaptive delay-sensing energy-saving method of optical wireless mixed broadband access network

A broadband access network, self-adaptive technology, applied in wireless communication, energy reduction, network traffic/resource management, etc., can solve the problems of gateway congestion, energy efficiency decline, large energy consumption, etc., to meet the requirements of packet delay, Reduced delay and congestion, high energy efficiency

Active Publication Date: 2015-11-11
CHONGQING UNIV OF POSTS & TELECOMM
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The gateway dormancy mechanism proposed in the above literature fails to reduce the exchange of messages between the OLT and the gateway during the continuous dormancy interval. When the continuous dormancy of the gateway occurs with a certain probability, the exchange of messages during the dormancy interval will consume a lot of energy. leading to a decrease in energy efficiency
Moreover, a dormant gateway will cause the Mesh node (MeshPoint, MP) to reselect the path, increasing the overhead of the WMN and the delay of the data packet
Burst traffic in WMN will cause some gateways to be congested, and gateway dormancy will make gateway congestion worse
[0006] In general, the current optical wireless hybrid broadband access network has the following problems to be solved in terms of energy-saving mechanisms: the traffic in the HOWBAN has a strong regularity, and the gateway will be in a long time without traffic for a certain period of time. Idle, for example, working days in residential areas or rest days in commercial areas will cause a large number of gateways to be idle; in addition, the time when users access the network is random, and the distribution of traffic is also random, and some gateways will be idle with a certain probability. The idle state occurs within a given period of time. For example, the gateway corresponding to the MP with a small number of users in the WMN will be idle for a period of time; since the MPCP in the PON stipulates that the maximum sleep cycle cannot exceed 50ms, the above two In all scenarios, the idle time of the gateway will be greater than 50ms, and the continuous sleep of the gateway will occur with a certain probability.
A continuously sleeping gateway needs to wake up and exchange messages with the OLT at the beginning of each sleep, reducing energy efficiency
A dormant gateway will cause the MP to re-route, increasing the overhead of the WMN and the delay of the data packet
At the same time, the user distribution in WMN is uneven, and the traffic distribution is also uneven. Burst traffic will also cause some gateway congestion, and gateway dormancy will make gateway congestion worse.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Self-adaptive delay-sensing energy-saving method of optical wireless mixed broadband access network
  • Self-adaptive delay-sensing energy-saving method of optical wireless mixed broadband access network
  • Self-adaptive delay-sensing energy-saving method of optical wireless mixed broadband access network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] In order to make the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] As mentioned earlier, the gateway in HOWBAN sleeps with a certain probability, when the interval between the data packets arriving at the gateway is greater than T W , the gateway starts the dormancy algorithm, and the continuous dormancy gateway only needs to monitor L time slots, and does not need to exchange a large number of messages in each dormancy interval. When MP selects multiple gateways, it comprehensively considers the link weight of the node to the gateway and the load of the gateway, so as to reduce the extra delay of the uplink data packet caused by the dormancy of the gateway and the congestion caused by the burst traffic.

[0018] like Figure 4 Shown is the flow chart of the energy-saving mechanism of adaptive delay perception in the pres...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a self-adaptive delay-sensing energy-saving method applied to the optical wireless mixed broadband access network. In the prior art, dormancy of an optical network unit can effectively improve the energy efficiency of the optical wireless mixed broadband access network, however, the energy efficiency of a continuous dormant gateway is not high, and delay of a system data packet may be aggravated. Thus, in the downlink direction of the optical wireless mixed broadband access network, the optical network unit can select the growth speed of the dormancy period adaptively according to the arrival rate of the data packet, thereby fully utilizing the delay tolerance of the data packet; and in the uplink direction, a wireless net-shaped network of multiple gateway balance loads can reduce delay and congestion caused of path reconstruction caused by dormancy of optical network unit, thereby reducing delay in the network. The method can enable the energy efficiency of the network to be maximal while satisfying delay of the data packet.

Description

technical field [0001] The invention relates to an energy-saving mechanism technology of an optical wireless hybrid broadband access network, in particular to an energy-saving mechanism method with delay tolerance control. Background technique [0002] Different from traditional digital subscriber line (Digital Subscriber Line, xDSL), cable modem (CableModem, CM), wireless cellular network, fiber to the home (FiberToTheHome, FTTH), wireless mesh network (WirelessMeshNetwork, WMN) and other access technologies, optical wireless Hybrid Optical-Wireless Broadband Access Networks (HOWBAN) combines the high bandwidth, low loss, long distance, high reliability of Passive Optical Network (PON) and the flexible and economical characteristics of WMN, and has been favored by researchers at home and abroad. Wide attention, it consists of the optical line terminal (OpticalLineTerminal, OLT) starting from the central office end (OpticalLineTerminal, OLT) to the PON part of the optical ne...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/02H04W28/08H04W52/02
CPCH04W28/0236H04W28/08H04W52/0248Y02D30/70
Inventor 王汝言周超吴大鹏谢毅谢金凤
Owner CHONGQING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products