Resource distribution method for door 2 door (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 the problems of not considering the D2D user rate requirements, not being able to allocate resources, not fully utilizing resources, etc., to improve user satisfaction and ensure interference levels , The effect of improving resource utilization efficiency

Inactive Publication Date: 2013-06-26
XIDIAN UNIV
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Problems solved by technology

However, this article does not consider the rate requirements of D2D users, cannot

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  • Resource distribution method for door 2 door (D2D) communication in long term evolution system
  • Resource distribution method for door 2 door (D2D) communication in long term evolution system
  • Resource distribution method for door 2 door (D2D) communication in long term evolution system

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[0032] The present invention will be further described with reference to 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, which includes a mutual communication device that directly communicates, and users at both ends of the communication device. The method includes the following steps:

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

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

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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 for device-to-device (D2D) communication applied in a long-term evolution system. Background technique [0002] With the development of mobile communications, user communications requirements continue to increase, and new technologies need to be studied 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 in the LTE system came into being. D2D communication technology is simply 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 interference control, billing and other functions, and allocates resources for D2D users, so that D...

Claims

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Application Information

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IPC IPC(8): H04W72/04
Inventor 李兵兵刘佳兰冰张阳
Owner XIDIAN UNIV
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