Method and apparatus for controlling D2D discovery process
First Claim
1. A method for controlling a device-to-device, D2D, discovery process at a user equipment, comprising:
- receiving from a network element guiding information on D2D services;
discovering a D2D service according to the guiding information, if the received guiding information is relevant to any D2D service that the user equipment desires to discover;
determining whether discovery information in a discovering message received from a discovered user equipment is sufficient for performing the D2D discovery process or not;
in response to a positive result of the determination, continuing the discovery procedure without involvement of network element, at least by using the discovery information in the discovering message;
in response to a negative result of the determination,sending a request to the network element for assistance on further discovery information for performing the D2D discovery process, andreceiving the further discovery information from the network element.
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Accused Products
Abstract
One of the embodiments of the present invention relates to a method for controlling a D2D discovery process at a discovering user equipment. The method comprises determining by the discovering user equipment whether discovery information in a discovering message received from a discovered user equipment is sufficient for performing the D2D discovery process or not. In response to a positive result of the determination, the user equipment continues the discovery procedure without involvement of network node, at least by using the discovery information in the discovering message; in response to a negative result of the determination, the user equipment sends a request to a network node for assistance on further discovery information for performing the D2D discovery process, and then receives the further discovery information from the network node. Embodiments of the present invention also provide methods, apparatuses and computer program products.
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Citations
18 Claims
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1. A method for controlling a device-to-device, D2D, discovery process at a user equipment, comprising:
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receiving from a network element guiding information on D2D services; discovering a D2D service according to the guiding information, if the received guiding information is relevant to any D2D service that the user equipment desires to discover; determining whether discovery information in a discovering message received from a discovered user equipment is sufficient for performing the D2D discovery process or not; in response to a positive result of the determination, continuing the discovery procedure without involvement of network element, at least by using the discovery information in the discovering message; in response to a negative result of the determination, sending a request to the network element for assistance on further discovery information for performing the D2D discovery process, and receiving the further discovery information from the network element. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A user equipment, comprising:
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one or more processors; and one or more memories including computer program code, the one or more memories and the computer program code configured to, with the one or more processors, cause the user equipment to perform at least the following; receiving from a network element guiding information on D2D services; discovering a D2D service according to the guiding information, if the received guiding information is relevant to any D2D service that the user equipment desires to discover; determining whether discovery information in a discovering message received from a discovered user equipment is sufficient for performing the D2D discovery process or not; in response to a positive result of the determination, continuing the discovery procedure without involvement of network element, at least by using the discovery information in the discovering message; in response to a negative result of the determination, sending a request to the network element for assistance on further discovery information for performing the D2D discovery process, and receiving the further discovery information from the network element. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A network element, comprising:
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one or more processors; and one or more memories including computer program code, the one or more memories and the computer program code configured to, with the one or more processors, cause the network element to perform at least the following; receiving a request from a discovering user equipment for assistance on discovery information for performing a D2D discovery process; determining whether any discovery information pre-stored in the network element is sufficient for assisting the discovering user equipment to perform the D2D discovery process; in response to a positive result of the determination, sending to the discovering user equipment the discovery information; in response to a negative result of the determination, forwarding the request from the discovering user equipment to a discovered user equipment, receiving discovery information feedback from the discovered user equipment, and sending to the discovering user equipment the discovery information. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification