Method for device to device communication and control node using the same
First Claim
1. A method of device to device (D2D) communication, adapted for a control node to arrange D2D communication between a first device and a second device, wherein the first device undergoes a handover procedure to the control node while having a non-D2D communication with the second device, and the method comprising:
- receiving, by the control node, from the first device having the non-D2D communication with the second device a first callee identification (ID) during the first device being handed over to the control node from another control node, wherein the control node receives the first callee ID in a handover request message from the another control node, and the first callee ID is an ID for the D2D communication between the first device and the second device, wherein the control node receives a first measurement report in response to transmit a first measurement configuration to the second device, and the another control node also receives a second measurement report transmitted by the first device in response to transmit a second measurement configuration to the first device, wherein the first callee ID is embedded in the second measurement report, both of the first measurement report and second measurement report indicate a quality of a channel between the first device and the second device, wherein the first measurement report and second measurement report are shared by the control node and the another control node;
searching, by the control node, for the second device having a second callee ID in response to receiving from the first device the first callee ID; and
arranging, by the control node, for the D2D communication between the first device and the second device when a first condition is fulfilled, wherein the first condition comprises the D2D communication between the first device and the second device is triggerable, and the step of arranging for the D2D communication between the first device and the second device when the first condition is fulfilled is executed before the procedure of handover the first device to the control node is complete,wherein whether the first condition is fulfilled comprises the criteria of the first device and the second device are within transmission ranges of each other and the quality of the channel between the first device and the second device is adequate, andwherein when the first condition is not fulfilled or when the first condition is no longer fulfilled, arranging, by the control node, the first device and the second device for the non-D2D communication.
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Abstract
The present disclosure proposes a method for device to device (D2D) communication. The method includes the step of receiving from the first device a first callee identification (ID) as the first device is handed over to the control node, searching for the second device having a second callee ID in response to receiving from the first device the first callee ID, determining that the second device has been found includes when the first callee ID is identical to the second callee ID, and arranging for the D2D communication between the first device and the second device in response to the second device is found when a first condition is fulfilled, wherein the first condition is fulfilled at least includes the second device has been found when the first callee ID is identical to the second callee ID.
30 Citations
45 Claims
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1. A method of device to device (D2D) communication, adapted for a control node to arrange D2D communication between a first device and a second device, wherein the first device undergoes a handover procedure to the control node while having a non-D2D communication with the second device, and the method comprising:
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receiving, by the control node, from the first device having the non-D2D communication with the second device a first callee identification (ID) during the first device being handed over to the control node from another control node, wherein the control node receives the first callee ID in a handover request message from the another control node, and the first callee ID is an ID for the D2D communication between the first device and the second device, wherein the control node receives a first measurement report in response to transmit a first measurement configuration to the second device, and the another control node also receives a second measurement report transmitted by the first device in response to transmit a second measurement configuration to the first device, wherein the first callee ID is embedded in the second measurement report, both of the first measurement report and second measurement report indicate a quality of a channel between the first device and the second device, wherein the first measurement report and second measurement report are shared by the control node and the another control node; searching, by the control node, for the second device having a second callee ID in response to receiving from the first device the first callee ID; and arranging, by the control node, for the D2D communication between the first device and the second device when a first condition is fulfilled, wherein the first condition comprises the D2D communication between the first device and the second device is triggerable, and the step of arranging for the D2D communication between the first device and the second device when the first condition is fulfilled is executed before the procedure of handover the first device to the control node is complete, wherein whether the first condition is fulfilled comprises the criteria of the first device and the second device are within transmission ranges of each other and the quality of the channel between the first device and the second device is adequate, and wherein when the first condition is not fulfilled or when the first condition is no longer fulfilled, arranging, by the control node, the first device and the second device for the non-D2D communication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A control node comprising a transmitter and a receiver for respectively transmitting and receiving wireless data, a storage medium for storing information of at least a first device and a second device, and a processing circuit coupled to the transmitter, the receiver, and the storage medium and is configured for executing:
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receiving from the first device a first callee identification (ID) during the first device being handed over to the control node from another control node while the first device having a non-D2D communication with the second device, wherein the control node receives the first callee ID in a handover request message from the another control node, and the first callee ID is an ID for the D2D communication between the first device and the second device, wherein the control node receives a first measurement report in response to transmit a first measurement configuration to the second device, and the another control node also receives a second measurement report transmitted by the first device in response to transmit a second measurement configuration to the first device, wherein the first callee ID is embedded in the second measurement report, both of the first measurement report and second measurement report indicate a quality of a D2D channel between the first device and the second device, wherein the first measurement report and second measurement report are shared by the control node and the another control node; searching for the second device having a second callee ID in response to receiving from the first device the first callee ID; arranging for the D2D communication between the first device and the second device when a first condition is fulfilled, wherein the first condition comprises the D2D communication between the first device and the second device is triggerable, wherein the processing circuit is configured for arranging for the D2D communication between the first device and the second device when the first condition is fulfilled is executed before the procedure of handover the first device to the control node is complete, wherein whether the first condition is fulfilled comprises the criteria of the first device and the second device are within transmission ranges of each other and the quality of the D2D channel between the first device and the second device is adequate, and wherein when the first condition is not fulfilled or when the first condition is no longer fulfilled, the processing circuit is configured for arranging the first device and the second device for the non-D2D communication. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A method for arranging device to device (D2D) communication in a wireless network between a first device initiating a communication session with a second device, wherein the first device undergoes a handover procedure to a control node while having a non-D2D communication with the second device, and the and the method comprising:
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the first device establishing with the network a first connection during which a first callee identification (ID) is transmitted to the network, wherein the control node receives the first callee ID in a handover request message from another control node during the first device being handed over to the control node from the another control node, and the first callee ID is an ID for the D2D communication between the first device and the second device; the second device establishing with the network a second connection during which a second callee ID of is transmitted to the network after the network authorizes the communication session; the first device and the second device respectively transmitting a first measurement report and a second measurement report in response to receive a first measurement configuration and a second measurement configuration, wherein the first callee ID is embedded in the first measurement report, both of the first measurement report and second measurement report indicate a quality of a channel between the first device and the second device, wherein the first measurement report and second measurement report are shared by the control node and the another control node; and at least one of the first device and the second device receiving from the network a first information to perform D2D communication; and the first device and the second device performing D2D communication with each other based on the first information, wherein the D2D communication between the first device and the second device are served by the same control node, the control node arranges the first device and the second device for the D2D communication when a first condition is fulfilled, and the step of arranging the second device for the D2D communication when the first condition is fulfilled is executed before the first device is handed over to the control node, wherein the first condition comprises the D2D communication between the first device and the second device is triggerable, and whether the first condition is fulfilled comprises the criteria of the first device and the second device are within transmission ranges of each other and the quality of the channel between the first device and the second device is adequate, and wherein when the first condition is not fulfilled or when the first condition is no longer fulfilled, the control node arranges the first device and the second device for the non-D2D communication. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45)
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Specification