Collaborative link establishment and maintenance method and related device
A technology for establishing a method and a link, which is applied in the field of communication, can solve problems such as communication reliability and system performance are not very high, and achieve the effect of improving communication reliability and system performance
Active Publication Date: 2013-12-04
HUAWEI TECH CO LTD
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[0004] The inventor found in practice that the above method only considers the scenario of direct communication between the source node and the destination node, and the communication reliability and system performance are not very high
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[0048] 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.
[0049] see figure 1 , figure 1 It is a flowchart of a method for establishing a cooperative link provided in an embodiment of the present invention. Such as figure 1 As shown, the method may include:
[0050] 101. The destination node receives and tries to decode the rateless encoded request communication message m1 broadcast by the source node, and records the time T when the destination node starts to broadcast the confirmation message ACK1_D after correctly d...
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The invention relates to a collaborative link establishment method which comprises the following steps: receiving and trying to decode a rateless-coded communication request message m1 which is broadcast by a source node, recording time T[1D] of an acknowledgement message which is broadcast after properly decoding m1, and recording time T[1i] of a communication request response message which is broadcast after monitoring that the potential collaborative node properly decodes m1;Broadcasting a rateless-coded communication permission message m2, recording time T[2s] of a communication permission response message which is broadcast after monitoring that the source node properly decodes m2, and recording time T[2i] of the communication permission response message which is broadcast after monitoring that the potential collaborative node properly decodes m2; and computing the optimal collaborative node according to T[1D], T[2s], and T[1i] and T[2i] of each potential collaborative node, and informing the source node and the optimal collaborative node to establish a collaborative link. The invention also provides a collaborative link maintenance method and a related device. The invention effectively discovers the hidden collaborative node, and enhances the communication reliability and system performance.
Description
technical field [0001] The present invention relates to the field of communication technology, in particular to a method for establishing and maintaining a cooperative link and related equipment. Background technique [0002] In the spectrum-sharing sensing network, since there is no pre-set available frequency between the transceiver and the subsystem, the communication link must be established dynamically. However, since the channel state information of the sending and receiving parties of the subsystem is not completely correlated and the two parties do not know each other, it is difficult to establish a communication link. The traditional solution is to pre-set a common channel for the secondary system, which is not occupied by the main system, and the sender and receiver of the secondary system establish a communication link through the information transmitted on the common channel. There are some problems in the practicality of the above method, such as whether there ...
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IPC IPC(8): H04L1/16H04W16/18H04W48/10H04W76/00
Inventor 张洁涛
Owner HUAWEI TECH CO LTD