Methods for receiving device discovery information and sending device discovery information and user equipment

Patent metadata

Field	Value
Publication number	US-10194304-B2
Application number	US-201414781361-A
Country	US
Kind code	B2
Filing date	Jan 24, 2014
Priority date	Apr 1, 2013
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

Disclosed are methods for receiving device discovery information and sending device discovery information, and UE. The method for receiving the device discovery information includes that: first UE receives device discovery information sent by second UE, wherein the device discovery information contains at least one piece of the following information: UE identification information and attribute information of the UE; and the first UE performs D2D discovery and/or D2D communication under the condition that the device discovery information is consistent with a preset condition. By the disclosure, the technical problem of difficulty in meeting a requirement on D2D communication diversity caused by containing of only an ID in the device discovery information in the related technology is effectively solved, and the technical effect of improving D2D communication effectiveness and flexibility is achieved.

First claim

What is claimed is:

1. A method for receiving device discovery information, comprising:
receiving, by first User Equipment (UE), device discovery information sent by second UE, wherein the device discovery information contains at least one piece of the following information: UE identification information and attribute information of the UE; and
performing, by the first UE, Device-to-Device (D2D) discovery and/or D2D communication under the condition that the device discovery information is consistent with a preset condition;
wherein the attribute information of the UE comprises at least one piece of the following information: an attribute update count value, UE capability information, UE type information, UE group information, UE state information, UE coverage information and application related information;
wherein performing, by the first UE, D2D discovery and/or D2D communication under the condition that the device discovery information is consistent with the preset condition comprises:
under the condition that the device discovery information contains an attribute update count value, judging, by the first UE, whether the information of the second UE and the corresponding attribute update count value have been received or not, and based on that the information of the second UE and the corresponding attribute update count value have not been received and/or the received attribute update count value is different, storing, by the first UE, the attribute update count value in the device discovery information, and acquiring other attribute information; and/or
under the condition that the device discovery information contains relay capability information of the second UE, storing, by the first UE, the second UE, and when the first UE searches for a relay node for signalling and data forwarding, employing the second UE as a candidate relay node; and/or
under the condition that the device discovery information contains indication information about whether the second UE has D2D communication capability or not, judging, by the first UE, whether to initiate D2D communication with the second UE or not according to the indication information about whether the second UE has the D2D communication capability information or not; and/or
under the condition that the device discovery information contains D2D capability profile information of the second UE, selecting, by the first UE, a plurality of communication parameters when initiating establishment of a D2D communication connection with the second UE according to the D2D capability profile information of the second UE; and/or
under the condition that the device discovery information contains type information of the second UE, responding to, by the first UE, UE with a high priority and/or UE of an emergency help calling user according to the type information of the second UE; and/or
under the condition that the device discovery information contains group information of the second UE and the first UE also belongs to a group indicated by the group information, performing, by the first UE, D2D group-based device discovery according to the group information of the second UE; and/or
under the condition that the device discovery information contains state information of the second UE, performing, by the first UE, D2D discovery and D2D communication flows according to a state of the second UE; and/or
under the condition that the device discovery information contains coverage information of the second UE, finishing, by the first UE, device discovery and/or D2D communication connection establishment with the second UE through a serving eNB of the first UE according to the coverage information of the second UE; and/or
under the condition that the device discovery information contains application related information of the second UE, judging, by the first UE, whether an application indicated by the application related information of the second UE is an application in which the first UE is interested or not, and if YES, presenting, by the first UE, preset information corresponding to the application in which the first UE is interested.

2. The method according to claim 1 , wherein
the UE identification information comprises at least one piece of the following information: a D2D discovery Identifier (ID) of the second UE and a D2D discovery ID of UE which is expected to be discovered by the second UE; or
the UE identification information comprises at least one piece of the following information: a device ID of the second UE, a device ID of UE which is expected to be discovered by the second UE, an ID allocated by a network entity and used for device discovery and a UE ID determined according to a system specification.

3. The method according to claim 1 , wherein
the attribute information of the UE comprises at least one piece of the following information: attribute information of the second UE and attribute information of the UE which is expected to be discovered by the second UE.

4. The method according to claim 3 , wherein
the attribute update count value is used for indicating an updating condition of at least one piece of the following attribute information of the UE: the UE capability information, the UE type information, the UE group information, the UE state information, the UE coverage information and the application related information; and/or
the UE capability information comprises at least one piece of the following information: information about a UE power level, information about whether the UE has a relay capability or not, information about whether the UE has a D2D communication capability or not and a D2D capability profile, wherein the UE power level is used for indicating a power level of current residual power of the UE, information about whether the UE has the relay capability or not is used for indicating whether the UE can forward control signalling and/or service data of other D2D UE or not, information about whether the UE has the D2D communication capability or not is used for indicating whether the UE can perform D2D communication with the other D2D UE or not, and the D2D capability profile is used for indicating a D2D capability set of the UE; and/or
the UE type information comprises at least one piece of the following information: a UE priority and a UE type; and/or
the UE group information comprises a D2D group ID of the D2D UE; and/or
the UE state information is used for indicating a state of the UE, wherein the state comprises: a connected state and/or an idle state; and/or
the UE coverage information is used for indicating at least one piece of the following information: information about whether the UE is covered by an eNB or not, a serving eNB of the UE and a discovery area of the UE; and/or
the application related information comprises attribute information related to a D2D application.

5. The method according to claim 4 , wherein
the power level of the current residual power comprises one of the followings: unlimited, high, middle and low, whether the UE has the relay capability or not is implicitly indicated by the power level of the UE, and a D2D capability comprises at least one of the followings: a D2D communication capability, the relay capability, the power level, a transmission mode, multi-antenna, retransmission, security, multimode multi-system supporting, a load indicator and a supported service type; and/or
the UE type comprises at least one of the followings: an emergency help calling user, an ordinary user and a system management user; and/or
the D2D group ID of the D2D UE contains D2D group information of one or more D2D groups to which the UE belongs; and/or
the state of the UE is indicated in one of manners as follows: an explicit state field, implicit indication with a D2D discovery ID and implicit indication with a resou

Assignees

• Zte Corp
• Xian Zhongxing New Software Co Ltd

Inventors

• Chen Lin
• Huang Ying
• Liu Yulan
• Luo Yumin
• Ma Shuyu
• Xie Feng
• Lu Zhaohua

Classifications

• H04W92/18

  between terminal devices · CPC title

• H04W88/04

  adapted for relaying to or from another terminal or user · CPC title

• H04W40/246

  Connectivity information discovery · CPC title

• H04W8/24

  Transfer of terminal data · CPC title

• H04W8/005 Primary

  Discovery of network devices, e.g. terminals · CPC title