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Power control method for centralized wireless multihop access network

A power control algorithm and wireless multi-hop technology, applied in the field of communication, can solve problems such as reducing the concurrency of distributed networks, network segmentation in the transmission range, and prominent node energy problems, so as to improve network throughput, fast convergence, and solve power problems Effect

Active Publication Date: 2007-08-08
上海润欣科技股份有限公司
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AI Technical Summary

Problems solved by technology

Different space environments, terrain changes, and different propagation environments will cause different transmission ranges, and different transmission distances will also lead to different transmission powers of nodes: on the one hand, larger transmission ranges will inevitably lead to higher transmission power, but This will reduce the concurrency of the distributed network, and at the same time make the node energy problem in the network more prominent
On the other hand, smaller transmit power can make more transmissions in the network at the same time, greatly improving the throughput of the system, but there may be a problem that the network is divided due to the small transmission range

Method used

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  • Power control method for centralized wireless multihop access network
  • Power control method for centralized wireless multihop access network

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Embodiment Construction

[0013] Before the specific embodiment of the present invention is described, several nouns are explained earlier:

[0014] Service duration: (TD: traffic duration) the duration of a service of a node in the network, which is a random variable and varies according to different services.

[0015] Routing tree update time: (RTUT: routing tree update time) the update time of the centralized wireless multi-hop network routing tree, generally the length of one or more superframes (millisecond level).

[0016] Maximum iteration length: (MIL: iterative length) This length is the maximum number of iterations set to prevent the power control algorithm from not converging due to SIR reception errors.

[0017] The power management method of the wireless multi-hop access network is described in detail below by taking the IEEE 802.16 wireless Mesh network as an example.

[0018] FIG. 1 is a subframe structure diagram of an IEEE 802.16 wireless Mesh network. As shown in FIG. 1 , a Mesh fram...

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Abstract

The invention provides one integral wireless multi-jump interface network power control method, which comprises the following steps: according to business speed rate processing initial emission power and according to network topological information processing emission initiating; then on the base adjusting each distribution power control in each frame fully considering each factor of SIR measurement or transmission error; processing statistics for transmission power as next frame power adjusting base.

Description

technical field [0001] The invention belongs to the communication field, and mainly aims at the difficult power control problem of wireless multi-hop access network, and proposes a wireless multi-hop access network system (Wireless Mesh Networks) based on IEEE 802.16. As a new type of access network, the wireless multi-hop access network is an extension of the wireless metropolitan area network technology WiMAX (worldwide interoperability formicrowave access), and it is one of the evolution trends of the future wireless network. Background technique [0002] The wireless multi-hop access network is a high-capacity and high-speed multi-point-to-multi-point wireless multi-hop network. Each user node can forward information from other user nodes while sending and receiving services, which is similar to the mobile Ad hoc network. The network topology has certain self-configuration, self-organization and self-management characteristics, but the wireless mesh (Mesh) network usuall...

Claims

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Application Information

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IPC IPC(8): H04B7/005H04L12/28H04L12/56H04W52/24
CPCY02B60/50Y02D30/70
Inventor 吴振华彭木根王文博
Owner 上海润欣科技股份有限公司
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