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Method and device for D2D (door-to-door) terminal communication

A technology for terminal communication and equipment, applied in the field of communication, can solve the problem of waste of wireless resources, and achieve the effects of avoiding mutual interference, saving wireless resources, and improving the efficiency of spectrum use.

Active Publication Date: 2013-03-06
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when two user equipments are relatively close to each other, communication is still performed through the eNB, which will cause waste of radio resources

Method used

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  • Method and device for D2D (door-to-door) terminal communication
  • Method and device for D2D (door-to-door) terminal communication
  • Method and device for D2D (door-to-door) terminal communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] figure 1 A flowchart of a D2D communication method implemented on the UE side according to an embodiment of the present invention is shown. It can be seen that the D2D communication method includes:

[0028] Step 110, UE1 acquires information related to the distance between UE1 and UE2.

[0029] To this end, UE1 may detect UE2, and estimate the distance between UE1 and UE2 based on the detection signal. In this embodiment of the present invention, "information related to distance" has a broad meaning. The "distance-related information" may include communication distance represented by length or time, path loss information related to communication distance, ultra-short-distance communication request indication, or any combination thereof.

[0030] Wherein, UE1 may obtain the information related to the distance between UE1 and UE2 through, for example, signal delay or signal fading in communication between UE1 and UE2. In addition, preferably, when detecting UE2, UE1 ma...

Embodiment 2

[0047] Combination of the above figure 1 The D2D terminal communication method according to the embodiment of the present invention is described from the UE side, and correspondingly, the embodiment of the present invention also provides a D2D terminal communication method at the base station side.

[0048] figure 2 A D2D terminal communication method implemented on the base station side according to an embodiment of the present invention is shown. It can be seen that the D2D communication method includes:

[0049] Step 210, the base station receives distance-related information from UE1, where the distance is the distance between UE1 and UE2.

[0050] In an embodiment of the present invention, the base station may receive the distance-related information from UE1. In another embodiment of the present invention, the base station may receive the identity of UE2 while receiving the information related to the distance from UE1.

[0051] In a specific implementation manner of...

Embodiment 3

[0064] In addition, the embodiment of the present invention also provides a D2D terminal communication method.

[0065] image 3 A flow chart of a D2D terminal communication method according to an embodiment of the present invention is shown. The D2D communication method includes:

[0066] Step 310, UE1 sends location information or location assistance information of UE1 and UE2 to the base station, or UE1 and UE2 send location information or location assistance information to the base station respectively.

[0067] In an embodiment of the present invention, UE2 may send its own location information to UE1, and then UE1 sends the location information or location assistance information of UE1 and UE2 to the base station. Wherein, the location assistance information is information that can be used to derive the locations of UE1 and UE2, for example, the location assistance information may include location information of UE1 and distance information between UE1 and UE2.

[006...

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Abstract

The invention discloses a method and a device for D2D (door-to-door) terminal communication. The method comprises the following steps that: a first user device obtains information related with a distance, wherein the distance is a distance between the first user device and a second user device; the first user device reports the information related with the distance to a base station; the first user device or the second user device sends a first device-to-device caching state report to the base station, wherein the first device-to-device caching state report comprises a caching state report of the first user device and / or a caching state report of the second user device; and the first user device receives the first device-to-device caching state report responding to the base station, distributes the resources and transmitting powers used by device-to-device communication between the first user device and the second user device according to the information related with the distance, and performs the device-to-device communication based on the distributed resources and the distributed transmitting powers used by the device-to-device communication between the first user device and the second user device.

Description

technical field [0001] The present invention relates to communication technologies, and in particular to a device-to-device (Device to Device, D2D) terminal communication method and device. Background technique [0002] In a cell network, when a user equipment (User Equipment, UE, that is, a terminal) wants to communicate with another user equipment, it needs to pass through a base station, for example, through a base station ( Evolved NodeB, eNB) for centralized control. The advantage of passing through the eNB is that the eNB can centrally control the use of radio resources in the cell and perform effective interference control. However, when two user equipments are relatively close to each other, communication is still performed through the eNB, which will cause waste of radio resources. [0003] With the continuous development of communication technology, more and more user devices need short-distance data transmission, such as data sharing, mutual transfer of pictures...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W72/04
CPCH04W76/023H04W16/14H04W76/14
Inventor 常俊仁
Owner HONOR DEVICE CO LTD
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