User clustering and resource distribution method in D2D multicast scene

A resource allocation and user technology, applied in the field of communications, can solve the problems of not considering the performance of D2D multicast clusters from the perspective of energy efficiency, and not comprehensively considering the performance of D2D multicast clusters, so as to improve utilization, improve satisfaction, and improve system performance. The effect of energy efficiency

Active Publication Date: 2017-03-15
XIAN UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] In summary, the existing technical solutions have the following disadvantages: the performance of D2D multicast clusters is not considered from the perspective of energy efficiency; clustering or resource alloc

Method used

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  • User clustering and resource distribution method in D2D multicast scene
  • User clustering and resource distribution method in D2D multicast scene
  • User clustering and resource distribution method in D2D multicast scene

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Embodiment Construction

[0050] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0051] see figure 2 , the method provided by the invention may include:

[0052] Step S1, each mobile terminal reports the measured data information to the base station.

[0053] The mobile terminal includes exchange signaling with the base station: a candidate cluster head user located at the junction of the edge area and the central area, a content request user located in the edge area, and a cellular user in the central area; the data information includes: location information, transmission Distance and link state information.

[0054] In step S2, the base station uses an energy-efficiency-based clustering algorithm to select an appropriate cluster head for the content requesting user according to the data information reported by each mobile terminal to form an optimal D2D multicast cluster; specifically, it may include:

[0055] S201, ...

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Abstract

The invention relates to the field of communication, and specifically relates to a user clustering and resource distribution method in a D2D multicast scene. The method comprises the steps that S1, each mobile terminal uploads data information to a base station after measurement; S2, the base station selects a proper cluster head for a content requesting user according to the data information uploaded by each mobile terminal, and forms an optimal D2D multicast cluster; S3, the base station transmits the clustering information to the content requesting user; S4, resources are distributed to the formed D2D multicast cluster, and a cellular user who meets the requirements of a cellular user and D2D multicast cluster QoS at the same time and generates the minimum interference with the D2D multicast cluster; S5, each mobile terminal carries out the data transmission after receiving the clustering and resource distribution information. The method can improve the service experience of an edge user, reduces the load of the base station, improves the transmission efficiency, reduces the interference, caused by the multiplexing of the frequency spectrum resources of the cellular user, with the D2D multicast cluster, and improves the utilization rate of resources.

Description

technical field [0001] The present invention relates to the communication field, in particular to a user clustering and resource allocation method in a D2D multicast scenario. Background technique [0002] The popularity of the Internet and the rapid development of communication technology have promoted the prosperity of local shared data services. When a large number of users request the same data transmission, data forwarding through the base station will undoubtedly increase the load of the base station, resulting in low utilization of system resources, excessive transmission delay, and reduced reliability. The multicast technology proposed in the LTE system can reduce resource waste to a great extent and relieve network pressure. When some users have the same content needs, the same data can be obtained through the base station multicast service. However, in the traditional base station-based multicast transmission, due to the different distribution locations of users,...

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Application Information

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IPC IPC(8): H04W4/06H04W24/02H04W72/08
CPCH04W4/06H04W24/02H04W72/541H04W72/542
Inventor 江帆申斌艳李晨碧王现超任豪王弘林康敏黄冠魏景章
Owner XIAN UNIV OF POSTS & TELECOMM
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