Method for performing distributed channel detection and sequential access

A distributed channel and channel technology, applied in the field of distributed channel detection and sequential access, can solve the problem of detection power affecting applicability and other issues
CN104254084AActive Publication Date: 2014-12-31ALCATEL LUCENT SHANGHAI BELL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ALCATEL LUCENT SHANGHAI BELL CO LTD
Publication Date
2014-12-31

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Abstract

The invention provides a method for performing distributed channel detection and sequential access. According to the technical scheme of the method, a new transmitter is allowed to transmit detection signals at detection intervals with any constant power, and at the same time, each activated communications link iteratively updates the transmitting power of the transmitter with a predetermined mechanism, wherein the mechanism only depends on the ratio of target SINR of the communications link to local SINR and a power adjustment value correlated to normalized outward interference; an external network determines the normalized power value of interference which is borne by the external network, and performs broadcast through an exclusive channel in an iterative process; in a channel detection process, each communication link only measures the quality of local communication links, and information interaction is not required to be performed between the communication links; and a new communication link independently deduces the maximum achievable SINR of the new communication link according to local link measurement information to determine whether to access a channel so as to be transmitted together with all activated links simultaneously.
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Description

technical field

[0001] The invention relates to wireless communication technology, in particular to a method for distributed channel detection and sequential access. Background technique

[0002] A wireless network can be understood as a collection of effectively point-to-point communication links (a pair of transmitters and receivers) interacting with power control. This modeling method can be applied to most practical wireless systems with interference coupling, such as multi-layer cellular systems, dense cellular systems, cognitive wireless networks, ad hoc networks and MIMO transmission, and multiple wireless access Coexistence systems of technologies, such as wireless communication systems where WiFi and cellular systems coexist. Each of the multiple communication links corresponds to a single-hop transmission in the same channel, which not only interfere with each other, but also adversely affect external transmissions. In order to improve the degree of spatial multi...

Claims

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