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Multiple access control method and control device for multi-hop decentralized network

A technology of access control and central network, applied in wireless communication, electrical components, etc., can solve problems such as algorithm complexity and protocol overhead, achieve the effect of reducing protocol overhead, wide application value, and improving solution efficiency

Active Publication Date: 2020-01-17
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0004] The present invention provides a multiple access control method and control device for a multi-hop non-central network to solve the algorithm complexity and protocol caused by time slot allocation and conflict control in the existing distributed wireless network multiple access Expensive technical issues

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  • Multiple access control method and control device for multi-hop decentralized network
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  • Multiple access control method and control device for multi-hop decentralized network

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Embodiment Construction

[0042] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0043] In a network formed by wireless communication devices, it is very important to maintain the interconnection between devices. There is a direct connection between two devices, which is called a hop. Intercommunication needs to be achieved through the relay of a device, which is called two hops, and so on. The communication distance between wireless communication devices is often measured by the number of hops. If the devices within two hops (including two hops) transmit data at the same time, data collision will occur, which is the so-called conflict. In addition, wireless networks using time division multiple access will use certain algorithms or devices (GPS, Beidou, etc.) to achieve c...

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Abstract

The invention discloses a multiple access control method and control apparatus for a multi-hop acentric network. The method comprises the following steps: a wireless communication device controls switch control among a plurality of states by using a finite state machine; a time slot pre-stored variable array is set at the wireless communication device for storing the time slot information used by all nodes within the range of one hop of the wireless communication device; the wireless communication device adopts a superframe structure to transmit information during communication, wherein the superframe comprises a plurality of frame units, and each frame unit comprises a time slot information domain used for identifying time slot use and conflict information and a data domain used for transmitting service information; and the finite state machine controls the switch control of the wireless communication device between device conflict and device communication state according to the time slot information domain. According to the method, the distribution and conflict condition of the time slot is characterized by two bits, and the conflict can be solved within a superframe period. The occupancy of network resources is very low while the transmission delay is guaranteed, and moreover, the design frame format is compatible with the data format of the original message.

Description

technical field [0001] The present invention relates to the technical field of wireless communication networks, in particular, to a multiple access control method and control device for a multi-hop decentralized network. Background technique [0002] There are more and more devices with wireless communication functions, such as smart home devices, vehicle wireless communication devices, etc., so the networking requirements for these devices are also increasing. In particular, the user's requirements for terminal portability and mobility require the wireless communication network formed by the device to be more flexible and efficient. The networking protocol adopted by this distributed non-centered network system, that is, the multiple access method is very important. . [0003] Distributed wireless networks often use two types of multiple access methods: one is a multiple access method based on carrier sense (CSMA, Carrier Sense Multiple Access), and the other is a multiple...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/08
CPCH04W74/0858H04W74/0866
Inventor 王杉辜方林魏急波周力唐麒赵海涛
Owner NAT UNIV OF DEFENSE TECH
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