A resource allocation method for d2d communication in long term evolution system

A long-term evolution system and resource allocation technology, applied in wireless communication, electrical components, etc., can solve problems such as inability to allocate resources, fail to consider D2D user rate requirements, and not fully utilize resources, etc., to ensure interference levels and improve user satisfaction , The effect of improving resource utilization efficiency

Inactive Publication Date: 2015-08-19
XIDIAN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

However, this article does not consider the rate requirements of D2D users, cannot allocate resources according to user needs, and does not make full use of resources

Method used

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  • A resource allocation method for d2d communication in long term evolution system
  • A resource allocation method for d2d communication in long term evolution system
  • A resource allocation method for d2d communication in long term evolution system

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings. Such as figure 1 As shown, the present invention is a resource allocation method for D2D communication in a long-term evolution system, including intercommunication devices for direct communication, and users at both ends holding the communication devices. The method includes the following steps:

[0033] (1) The user at one end holding the communication device sends a discovery signal of the mutual communication device to the base station, wherein the discovery signal includes a temporary identifier of the wireless network within the range of the user at the one end;

[0034] (2) The base station performs geographical location detection, wherein the base station obtains the geographical location information of the user at the one end according to the positioning of the base station or GPS or assisted A-GPS, and at the same time feeds back a record related to the user at t...

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Abstract

The invention discloses a resource distribution method for door 2 door (D2D) communication in a long term evolution system. The method comprises the following steps that: (1) a D2D user UE1 transmits a D2D equipment discovery signal to a base station; (2) the base station measures the geographic position and returns a UE list which is less than R away from the UE1 to the UE1; (3) if a target UE2 is in a range of the UE1, the UE1 applies D2D link measurement for the base station; (4) the base station distributes resources required by link measurement for UE1; (5) the UE1 transmits a link measurement signal to the UE2, feeds the measured signal to interference plus noise ratio (SINR) and other information back to the base station and reports the required transmission rate requirement; (6) the base station estimates the physical resource block (PRB) number according to the contents reported by UE1 and distributes resources for D2D communication; and (7) the UE1 and UE2 start D2D communication. According to the designed D2D resource distribution method, the user rate requirement is considered, the interference between a cellular user and a D2D user is considered, the RB number calculation of the multiplexing cellular user resources is given, and the user satisfaction and resource utilization efficiency are improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a resource allocation method applied in Device-to-Device (D2D for short) communication in a long-term evolution system. Background technique [0002] With the development of mobile communication and the continuous increase of user communication requirements, it is necessary to study new technologies to provide higher data rates and system capacity on the basis of Long Term Evolution (LTE for short). The introduction of Device-to-Device (D2D) communication technology into the LTE system came into being. Simply put, D2D communication technology is to change the communication method originally forwarded by the base station to direct communication between devices that need to communicate. , but the base station still maintains the transmission of control information with a pair of D2D users, realizes functions such as interference control and billing, and allocates res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04
Inventor 李兵兵刘佳兰冰张阳
Owner XIDIAN UNIV
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