Method and device for realizing band switching and topology control

A frequency band and licensed frequency band technology, applied in the field of communication, can solve the problems of uneven distribution of nodes, large transmission power, low transmission power, etc., to achieve the effect of increasing coverage, increasing the number of nodes, and ensuring connectivity

Active Publication Date: 2010-02-10
HUAWEI TECH CO LTD +1
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Problems solved by technology

However, in the case of uneven distribution of nodes, some nodes are densely located, and some are relatively far away, such as isolated nodes (nodes at the edge of the network), and densely located nodes require low transmission power, while distant nodes require The transmission power is high. According to the provisions of the COMPOW protocol, all nodes need to use the same transmission power, and the transmission power used should be minimized under the premise of ensuring network connectivity. Therefore, it is necessary to use transmit power, so it is undoubtedly a waste for nodes that require

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  • Method and device for realizing band switching and topology control
  • Method and device for realizing band switching and topology control
  • Method and device for realizing band switching and topology control

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Embodiment Construction

[0041] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] refer to figure 1 , which shows a flow chart of an embodiment of a method for implementing frequency band switching in the present invention, which may include the following steps:

[0043] Step 101: the node triggers frequency band switching;

[0044] Step 102: If the frequency band is switched from the licensed frequency band to the unlicensed frequency band, detect whether the node is a key node according to the collected neighbor node information of the node, if yes, reject the switch, otherwise, perform the switch; if If the above-mentioned frequency band is switched from an unlicensed frequency band to an authorized frequency band, the switching is performed.

[0045] Below in conjunction with the embodiment figure...

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Abstract

The invention discloses a method and a device for realizing band switching and topology control. The method comprises the following steps: triggering the band switching through a node; detecting whether the node is a key node or not according to the adjacent node information of the collected node if the band switching is switched from an authorized band to an unauthorized band; if so, refusing the switching; otherwise, carrying out the switching; and carrying out the switching if the band switching is switched from the unauthorized band to the authorized band. The device for realizing the band switching comprises a band triggering unit, a detecting unit and a switching unit. The method and the device provide the novel topology control technology for perceiving the radio technology; and inaddition, the method and the device can also reduce the energy consumption of wireless networks effectively, reduce the waste of power and prolong the lifetime of the networks.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for realizing frequency band switching and topology control. Background technique [0002] The development of wireless communication technology is becoming more and more difficult to meet people's needs in the field of wireless access. In order to alleviate this contradiction, people use new frequency bands to continuously develop new wireless access technologies. However, due to the The size and power of node antennas are limited, and the frequency bands that can be used for wireless access technologies are very limited. The appearance of Cognitive Radio (CR, Cognitive Radio) technology has created a new situation for solving the problem that the frequency bands that nodes can use for wireless access technology are very limited. [0003] CR technology refers to a wireless communication technology that includes an intelligent transceiver, which can int...

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Application Information

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IPC IPC(8): H04B17/00H04B7/26H04B17/382
CPCY02B60/50Y02D30/70
Inventor 盛敏郑丽丽史琰马惠生田野张琰王可
Owner HUAWEI TECH CO LTD
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