Method and device for discovering specified user equipment

A technology for specifying users and discovering methods, which is applied in the field of communication and can solve problems such as no solution

Active Publication Date: 2014-10-22
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, currently there is only a public discovery and discovery process for user equipment, and the user equipment has no expectations for the target

Method used

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  • Method and device for discovering specified user equipment
  • Method and device for discovering specified user equipment
  • Method and device for discovering specified user equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0193] Corresponding to the method (1).

[0194] Such as Figure 8 As shown, the base station notifies the discoverer UE and the discovered party UE of the resource information occupied by the discovery signal, the discovered party UE sends the discovery signal, and the discoverer UE feeds back the discovery signal reception quality information to the base station according to the decoding result of the discovery signal.

[0195] Specifically, on the network side, it includes:

[0196] Step 1: When the UE initiates a request to the network to discover the UE at the other end, or the eNB receives the core network signaling, it needs to perform the discovery process for the two UEs, or based on the eNB algorithm, the discovery process needs to be initiated between the two UEs. Then the eNB determines the discovering UE and the discovered UE according to the instructions or algorithms in the request, and informs the discovering UE and the discovered UE in the form of dedicated signaling...

Embodiment 2

[0211] Corresponding to the method (2).

[0212] Such as Picture 9 As shown, the base station notifies the discoverer UE and the discovered party UE of the resource information occupied by the discovery signal and response signal, the discovered party UE sends the discovery signal, and the discoverer UE feeds back the discovery signal reception quality information to the base station according to the decoding result of the discovery signal. The discovering UE sends a response signal, and the discovered UE feeds back response signal reception quality information to the base station according to the decoding result of the response signal.

[0213] In some cases, it is considered that the UEs of both parties in the D2D communication have a link in one direction (UE1-> UE2) and the reverse link (UE2-> UE1) There are certain differences. For example, when the transmission links in the two directions need to use different frequencies or frequency bands for transmission, that is, when the...

Embodiment 3

[0233] Corresponding to the method (3).

[0234] Such as Picture 10 As shown, the base station notifies the discoverer UE and the discovered party UE of the resource information occupied by the discovery signal and the response signal, the discovered party UE sends the discovery signal, the discoverer UE determines that the discovery signal is decoded correctly and then sends the response signal. The discovered party UE The decoding result of the response signal feeds back the response signal reception quality information to the base station.

[0235] In some cases, it is considered that the UEs of both parties in the D2D communication have a link in one direction (UE1-> UE2) and the reverse link (UE2-> UE1) There are certain differences. For example, when the transmission links in the two directions need to use different frequencies or frequency bands for transmission, that is, when the link quality in one direction is measured to meet the D2D communication requirements, the link ...

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Abstract

The invention discloses a method and device for discovering specified user equipment and belongs to the communication technical field. The method includes the following steps that: when a network side determines that discovery is required to be performed between at least specified user equipment (UE), resource information occupied by transmission signals of discovering UE and discovered UE is notified, so that signal transmitting and receiving can be performed between the discovering UE and the discovered UE through the resource information occupied by the transmission signals; signal receiving quality information is fed back according to decoding results after the signal receiving; the network side can determine discovery results according to the signal receiving quality information, and the discovery of specified user equipment can be realized.

Description

Technical field [0001] The present invention relates to communication technology, in particular to a method and device for discovering designated user equipment. Background technique [0002] In the future development of mobile communication systems, in order to better meet user needs and improve the efficiency of interactive information, a mechanism for mutual discovery between mobile devices and direct communication is introduced. [0003] In the LTE (Long Term Evolution) system, a centralized network control method is adopted, that is, the uplink and downlink data of the UE are all sent and received under the control of the network. The communication between UE (User Equipment) and UE is also forwarded and controlled by the network. There is no direct communication link between UE and UE, and UE is not allowed to send uplink data by itself, such as figure 1 Shown. [0004] D2D (Device to Device) communication [0005] Such as figure 2 As shown, in the D2D communication mode, a ce...

Claims

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Application Information

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IPC IPC(8): H04W76/04
Inventor 刘佳敏
Owner DATANG MOBILE COMM EQUIP CO LTD
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