Methods for Receiving Device Discovery Information and Sending Device Discovery Information and User Equipment

Patent metadata

Field	Value
Publication number	US-2016150390-A1
Application number	US-201414781361-A
Country	US
Kind code	A1
Filing date	Jan 24, 2014
Priority date	Apr 1, 2013
Publication date	May 26, 2016
Grant date	—

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

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.

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 . (canceled)

4 . (canceled)

5 . (canceled)

6 . 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; or 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

7 . (canceled)

8 . The method according to claim 76 , 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.

9 . The method according to claim 8 , 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 th 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 resource for sending the discovery information, wherein different resource sets bearing the device discovery information are allocated to the UE in different states; and/or whether the UE is covered by the eNB or not is indicated in one of manners as follows: indication through an explicit field and identification through UE serving eNB indication information, wherein the UE serving eNB indication information is an ID used for distinguishing adjacent eNB s; and/or the attribute information related to the D2D application comprises at least one of the followings: an application type, an application ID and specific application information.

10 . The method according to claim 9 , wherein
the D2D discovery ID and the resource set bearing the device discovery information are broadcasted to the second UE by the eNB via an air interface or sent to the second UE through special signalling.

11 . (canceled)

12 . The method according to claim 9 , wherein
the ID used for distinguishing the adjacent eNBs comprises at least one of: a UE serving eNB ID, a UE serving cell ID and a UE serving cell physical ID; or the ID used for distinguishing the adjacent eNBs is an ID configured by a network manager for each eNB to distinguish the adjacent eNBs, or is an ID that each eNB actively selects own distinguishing ID, and performs interaction, via an X2 interface, with the eNB in an adjacent cell to ensure uniqueness of the distinguishing ID.

13 . (canceled)

14 . The method according to claim 1 , wherein sending, by the second UE, the device discovery information comprises:
sending, by the second UE, the device discovery information through a synchronous signal and/or a broadcast channel.

15 . The method according to claim 1 , 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:
sending, by the first UE, a discovery response message to the second UE under the condition that a D2D discovery ID of the UE, which is expected to be discovered by the second UE, in the device discovery information is the same as a D2D discovery ID of the first UE; and receiving, by the second UE, the discovery response message; wherein sending, by the first UE, the discovery response message to the second UE comprises: directly sending, by the first UE, the discovery response message to the second UE; or, sending, by the first UE, the discovery response message to the second UE through a network entity.

16 . (canceled)

17 . The method according to claim 1 , 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

Assignees

• Zte Corp

Inventors

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

Classifications

• H04W52/0212

  managed by the network, e.g. network or access point is leader and terminal is follower · CPC title

• H04W8/005 Primary

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

• H04W76/14

  Direct-mode setup · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04W48/16

  Discovering, processing access restriction or access information · CPC title