System and method for device discovery for device-to-device communication in a cellular network
First Claim
Patent Images
1. A base station comprising:
- a transceiver; and
a processor coupled to the transceiver, the processor, in conjunction with the transceiver, configured toreceive a buddy list (“
BL”
) of a first user equipment (“
UE”
),determine when to initiate a device-to-device (“
D2D”
) discovery process for the first user equipment and another UE on the BL, wherein the BL includes an identifier (“
ID”
) of the another UE with which the first UE would desire to be connected using a D2D communication link, andsignal the first UE and the another UE to initiate a user equipment discovery process.
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Accused Products
Abstract
An embodiment of a system enables a user equipment to employ a buddy list to initiate a D2D discovery process. The user equipment constructs a buddy list including other user equipments with which the user equipment would desire to communicate employing a D2D communication link. The user equipment transmits the buddy list to a serving base station. The user equipment transmits a request to the serving base station that it desires to communicate over a D2D communication link with a second user equipment that is on the buddy list. The user equipment receives D2D link setup information from the serving base station for the communication link with the second user equipment. The user equipment transmits a beacon signal employing the D2D link setup information.
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Citations
20 Claims
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1. A base station comprising:
-
a transceiver; and a processor coupled to the transceiver, the processor, in conjunction with the transceiver, configured to receive a buddy list (“
BL”
) of a first user equipment (“
UE”
),determine when to initiate a device-to-device (“
D2D”
) discovery process for the first user equipment and another UE on the BL, wherein the BL includes an identifier (“
ID”
) of the another UE with which the first UE would desire to be connected using a D2D communication link, andsignal the first UE and the another UE to initiate a user equipment discovery process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for operating a first base station, the method comprising:
-
receiving a buddy list (“
BL”
) from a first user equipment (“
UE”
);determining when to initiate a device-to-device (“
D2D”
) discovery process for the first UE and another UE on the BL, wherein the BL includes an identifier (“
ID”
) of the another UE with which the first UE would desire to be connected using a D2D communication link; andsignaling the first UE and the another UE to initiate a user equipment discovery process. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A base station comprising:
-
a transceiver; and a processor coupled to the transceiver, the processor, in conjunction with the transceiver, configured to receive a buddy list (“
BL”
) of a first user equipment (“
UE”
),determine when to initiate a device-to-device (“
D2D”
) discovery process for the first user equipment and another UE on the BL,signal the first UE and the another UE to initiate a user equipment discovery process, and construct a combined BL for UEs operating within a coverage area of the base station, the combined BL including the BL received from the first UE.
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18. A base station comprising:
-
a transceiver; and a processor coupled to the transceiver, the processor, in conjunction with the transceiver, configured to receive a buddy list (“
BL”
) of a first user equipment (“
UE”
),determine when to initiate a device-to-device (“
D2D”
) discovery process for the first user equipment and another UE on the BL, andsignal the first UE and the another UE to initiate a user equipment discovery process, including to signal a Cell ID, a discontinuous receive (“
DRX”
) pattern, and which of the first UE and the another UE is a serving UE.
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19. A method for operating a first base station, the method comprising:
-
receiving a buddy list (“
BL”
) from a first user equipment (“
UE”
);determining when to initiate a device-to-device (“
D2D”
) discovery process for the first UE and another UE on the BL;signaling the first UE and the another UE to initiate a user equipment discovery process; and constructing a combined BL for UEs operating within a coverage area of the base station, the combined BL including the BL received from the first UE.
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20. A method for operating a first base station, the method comprising:
-
receiving a buddy list (“
BL”
) from a first user equipment (“
UE”
);determining when to initiate a device-to-device (“
D2D”
) discovery process for the first UE and another UE on the BL; andsignaling the first UE and the another UE to initiate a user equipment discovery process, including signaling a Cell ID, a discontinuous receive (“
DRX”
) pattern, and which of the first UE and the another UE is a serving UE.
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Specification
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Current AssigneeFuturewei Technologies Incorporated (Huawei Investment & Holding Co., Ltd.)
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Original AssigneeFuturewei Technologies Incorporated (Huawei Investment & Holding Co., Ltd.)
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InventorsKwon, Young Hoon
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Primary Examiner(s)Kao, Jutai
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Application NumberUS13/343,585Publication NumberTime in Patent Office1,231 DaysField of SearchNoneUS Class Current370/328CPC Class CodesH04W 76/14 Direct-mode setupH04W 8/005 Discovery of network device...Y02D 30/00 Reducing energy consumption...
