Method for obtaining traffic information using local area communication, and apparatus therefor
First Claim
1. A method for acquiring traffic information by a user equipment (UE) in a wireless communication system, the method comprising:
- transmitting a first device-to-device (D2D) discovery signal requesting traffic information to a plurality of first neighboring UEs;
receiving, in response to the first D2D discovery signal, one or more second D2D discovery signals including identifications of one or more second neighboring UEs from the one or more second neighboring UEs among the plurality of first neighboring UEs; and
updating traffic information of a surrounding area based on a number of the received one or more second D2D discovery signals,wherein the one or more second D2D discovery signals are transmitted from the one or more second neighboring UEs, when a number of third neighboring UEs located within a first distance from the one or more second neighboring UEs exceeds a reference number,wherein no additional second D2D discovery signals are received within a certain time period, after receiving one of the one or more second D2D discovery signals from the one or more second neighboring UEs among the plurality of first neighboring UEs, andwherein the plurality of first neighboring UEs are located within a second distance from the UE.
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Abstract
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and an apparatus for obtaining traffic information by a terminal in a wireless communication system. The method comprises the steps of: broadcasting a first D2D discovery signal requesting traffic information to a plurality of first surrounding terminals; receiving, in response to the first D2D discovery signal, a second D2D discovery signal indicating surrounding traffic information from one or more second surrounding terminals among the plurality of first surrounding terminals; and updating the traffic information of the surrounding area on the basis of the one or more second D2D discovery signals.
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Citations
6 Claims
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1. A method for acquiring traffic information by a user equipment (UE) in a wireless communication system, the method comprising:
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transmitting a first device-to-device (D2D) discovery signal requesting traffic information to a plurality of first neighboring UEs; receiving, in response to the first D2D discovery signal, one or more second D2D discovery signals including identifications of one or more second neighboring UEs from the one or more second neighboring UEs among the plurality of first neighboring UEs; and updating traffic information of a surrounding area based on a number of the received one or more second D2D discovery signals, wherein the one or more second D2D discovery signals are transmitted from the one or more second neighboring UEs, when a number of third neighboring UEs located within a first distance from the one or more second neighboring UEs exceeds a reference number, wherein no additional second D2D discovery signals are received within a certain time period, after receiving one of the one or more second D2D discovery signals from the one or more second neighboring UEs among the plurality of first neighboring UEs, and wherein the plurality of first neighboring UEs are located within a second distance from the UE. - View Dependent Claims (2, 3)
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4. A user equipment (UE) used in a wireless communication system, the UE comprising:
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a radio frequency (RF) unit; and a processor, wherein the processor is configured to transmit a first device-to-device (D2D) discovery signal requesting traffic information to a plurality of first neighboring UEs, to receive, in response to the first D2D discovery signal, one or more second D2D discovery signals including identifications of one or more second neighboring UEs from the one or more second neighboring UEs among the plurality of first neighboring UEs, and to update traffic information of a surrounding area based on a number of the received one or more second D2D discovery signals, wherein the one or more second D2D discovery signals are transmitted from the one or more second neighboring UEs, when a number of third neighboring UEs located within a first distance from the one or more second neighboring UEs exceeds a reference number, wherein no additional second D2D discovery signals are received within a certain time period, after receiving one of the one or more second D2D discovery signals from the one or more second neighboring UEs among the plurality of first neighboring UEs, and wherein the plurality of first neighboring UEs are located within a second distance from the UE. - View Dependent Claims (5, 6)
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Specification