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Relay transmission method for multi-hop cellular network

A technology of cellular network and transmission method, applied in network topology, electrical components, wireless communication and other directions, can solve the problems of not many mobile stations and small base station coverage, and achieve reduction of interference, transmission power, and path loss. Effect

Active Publication Date: 2017-04-05
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the existing methods only consider the two-hop relay transmission mode, and do not consider the case where the number of hops is greater than two. They can be used in scenarios where the coverage of the base station is not large and the number of mobile stations in the cellular network is not many. For the coverage of the base station Very large, the scenario of multi-hop relay transmission with a large number of mobile stations in the cellular network is no longer applicable

Method used

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  • Relay transmission method for multi-hop cellular network
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  • Relay transmission method for multi-hop cellular network

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Embodiment Construction

[0029] In this embodiment, a relay transmission method of a multi-hop cellular network is applied to a multi-hop cellular network composed of a base station BS and a plurality of randomly distributed mobile stations. As the origin O, the two sides adjacent to the origin O are respectively used as the X axis and the Y axis, and the coordinate system XOY is established; for example figure 1 As shown, for any mobile station, the relay transmission method is performed in the following steps:

[0030] Step 1. Define the period as T, then T k Indicates the kth period;

[0031] Step 2, initializing k=1;

[0032] Step 3. Any mobile station MS makes a service request for the first time;

[0033] Step 4. According to the coordinate position of the mobile station MS in the coordinate system XOY, use the GPS positioning technology to calculate the k-th period T k The distance d(k) between the mobile station MS and the base station BS, if d(k)0 , then the kth period T k The mobile sta...

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Abstract

The invention discloses a relay transmission method for a multi-hop cellular network. The method comprises steps: 1, k is initialized to be 1; 2, any mobile station puts forward a service request for the first time; 3, the distance d(k) between the mobile station and a base station under a kth period Tk is calculated, if d(k)<d0, the mobile station is directly connected with the base station, or otherwise, the step 4 is carried out; 4, if n preselected relays are searched and obtained, the step 5 is carried out, or otherwise, direct connection with the base station is carried out; 5, the relay selection probabilities are calculated, and the mobile station is connected with a preselected relay corresponding to the maximum relay selection probability; 6, under the kth period Tk, if the mobile station has the service request, communication is carried out; and 7, whether k is equal to 1 is judged, if yes, k+1 is assigned to k, and the step 3 is returned for execution, or otherwise, after the connection built by the mobile station under a (k-1)th period T<k-1> is cut off, k+1 is assigned to k, and the step 3 is returned for execution. Thus, the cellular network performance can be improved, and the user experience is thus improved.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a relay transmission method of a multi-hop cellular network. Background technique [0002] With the rapid development of mobile communication technology, the traditional cellular structure, that is, the way the mobile station directly communicates with the base station, is difficult to meet the increasing needs of users for mobile communication due to the characteristics of small system capacity, large path loss and low coverage. Increasing the number of base stations can solve the above problems to a certain extent, but due to economic and social problems, it is difficult to be widely used in practice. The multi-hop cellular network has the characteristics of extending coverage and improving system capacity, and has attracted more and more attention in recent years. [0003] Multi-hop cellular network is a new type of network that combines traditional cellular...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/22H04W84/04
CPCH04W40/22H04W84/042
Inventor 唐昊柴均超江琦马学森苗刚中程文娟
Owner HEFEI UNIV OF TECH
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