Method and apparatus for discovering neighbor device in D2D communication network
AssigneeSamsung Electronics Co., Ltd.
InventorsHye Joong Kang, Chung Gu Kang, Kwon Yeol Park, Sang Heon Pack
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Abstract
A method of a Mobile Station (MS) for discovering neighbor MSs in a Device to Device (D2D) network includes broadcasting, by a discovery MS, a discovery request signal for discovering neighbor MSs, using a discovery request resource region repeated with a first period, if a neighbor MS discovery event is detected; and receiving, by the discovery MS, a discovery signal from at least one of other MSs in response to the discovery request signal, using a discovery resource region repeated with a second period. Other embodiments including a method for a central node discovering neighbor MSs and a discovery MS and a central node are also disclosed.
Claims16
A method of a terminal in a device-to-device (D2D) communication network, the method comprising:
- broadcasting, in a predetermined resource region included in an interval when a plurality of neighbor terminals operate in an active mode, a request signal for requesting to transmit a response signal;
- receiving, from each of at least one neighbor terminal receiving the request signal among the plurality of neighbor terminals, at least one response signal comprising identification information for the each of the at least one neighbor MS;
- and
- updating list information regarding neighbor terminals performing the D2D communication with the terminal, by storing the identification information for the each of the at least one neighbor terminal,
- wherein the at least one neighbor terminal receiving the request signal is configured to maintain the active mode.
An apparatus for a terminal in a device-to-device (D2D) communication network, the apparatus comprising:
- a transceiver configured to transmit and receive signals for discovering neighbor MS;
- and
- a controller configured to:
- broadcast, in a predetermined resource region included in an interval when a plurality of neighbor terminals operate in an active mode, a request signal for requesting to transmit a response signal
- receive, from each of at least one neighbor terminal receiving the request signal among the plurality of neighbor terminals, at least one response signal comprising identification information for the each of the at least one neighbor MS;
- and
- update list information regarding neighbor terminals performing the D2D communication with the terminal, by storing the identification information for the each of the at least one neighbor terminal,
- wherein the at least one neighbor terminal receiving the request signal is configured to maintain the active mode.
A method of a terminal in a device-to-device (D2D) communication network, the method comprising:
- transmitting, to a central node, list information update request signal, wherein the list information is information regarding neighbor terminals performing the D2D communication with the MS;
- receiving a signal allocating resources for transmission of a request signal for requesting to transmit a response signal and a discovery measurement request signal;
- broadcasting, in a predetermined interval when a plurality of neighbor terminals operate in an active mode, the request signal and the discovery measurement request signal based on the allocated resources;
- and
- receiving, from the central node, list information which is updated based on a response signal comprising identification information for each of at least one neighbor terminal among the plurality of terminals and a discovery measurement report signal comprising information indicating strength of the discovery measurement request signal,
- wherein the response signal and the discovery measurement report signal are received from the each of the at least one neighbors, and
- wherein the at least one neighbor terminal receiving the request signal is configured to maintain the active mode.
A method of a central node for discovering neighbor terminals in a D2D communication network, the method comprising:
- receiving, from a discovery terminal, list information update request signal, wherein the list information is information regarding neighbor terminals performing the D2D communication with the discovery terminal;
- allocating resources for transmitting a request signal for requesting a response signal and a discovery measurement request signal;
- receiving, from each of at least one neighbor terminal among a plurality of terminals, a request signal comprising identification information for the each of the at least one neighbor terminal and a discovery measurement report signal comprising information indicating strength of the discovery measurement request signal;
- and
- updating the list information based on the identification information for the each of the at least one neighbor terminal and the discovery measurement report signal;
- and
- transmitting, to the discovery terminal, the updated list information.
Dependencies are inferred from the claim text.