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Acquisition and allocation method of guaranteed time slot for ensuring service and wireless sensor network

A technology that guarantees time slots and allocation methods, applied in wireless communication, network traffic/resource management, electrical components, etc., can solve problems such as inability to ensure full utilization of GTS and waste of GTS, so as to improve network bandwidth utilization and solve waste of GTS Effect

Active Publication Date: 2016-12-28
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0008] In order to solve the problem that the existing technology cannot guarantee that each GTS is fully utilized, each GTS is still partially wasted, and the defect of GTS waste is not completely solved, and the network coordinator frequently sends confirmation frames ACK, causing excessive frame header overhead Defects, proposed to ensure the acquisition and allocation of guaranteed time slots for services and wireless sensor networks

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  • Acquisition and allocation method of guaranteed time slot for ensuring service and wireless sensor network
  • Acquisition and allocation method of guaranteed time slot for ensuring service and wireless sensor network
  • Acquisition and allocation method of guaranteed time slot for ensuring service and wireless sensor network

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Embodiment Construction

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0051] The English abbreviations that may appear in the embodiments of the present invention are uniformly explained as follows:

[0052] ACK: Acknowledge Frame, confirmation frame;

[0053] GACK: Group Acknowledge Frame, group confirmation frame;

[0054] GTS: Guaranteed Time Slot, to ensure the guaranteed time slot of the service;

[0055] SGTS: Son Guaranteed Time Slots, to ensure the sub-guaranteed time slot of the service;

[0056] CAP: Contention Access Pe...

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Abstract

The invention relates to the technical field of wireless sensor networks, and in particular relates to a method for acquiring and allocating the GTS (guaranteed time slot) of an assured service as well as a wireless sensor network. According to the method and the wireless sensor network, a CFP (contention free period) length is divided into a plurality of equal-length time slots with small granularities, and the time slot lengths of sensor nodes are acquired according to an equal-length time slot with small granularity, and the defect of GTS waste is solved effectively; the restriction that only 7 devices in a superframe can apply for the GTS is broken through; moreover, a GACK (group acknowledge frame) is introduced so as to confirm sensor nodes integrally; the defect that an ACK (acknowledge frame) is sent frequently by a network coordinator so as to lead to excessive frame head part expense is prevented; and the wireless sensor node network bandwidth utilization ratio is improved greatly.

Description

technical field [0001] The invention relates to the technical field of wireless sensor networks, in particular to methods for acquiring and allocating Guaranteed Time Slots (GTS for short) for guaranteed services and wireless sensor networks. Background technique [0002] The wireless sensor node network is composed of a large number of miniature sensor nodes deployed in the monitoring area. It is a multi-hop self-organizing network formed by wireless communication. At present, the wireless sensor node network has been widely used, but the sensor node bandwidth and energy resources If the bandwidth is limited, energy will be wasted if the bandwidth is idle. Therefore, improving the bandwidth utilization of sensor nodes is an important technology for wireless sensor node networks. [0003] At present, the MAC (Medium Access Control) layer of the wireless sensor node network adopts the IEEE802.15.4 MAC layer protocol, and works in a non-beacon-enabled or beacon-enabled mode. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W28/06
Inventor 曾浩何丰李貌
Owner CHONGQING UNIV OF POSTS & TELECOMM
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