Apparatus and method for adding and deleting relay link in communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsSeung-Hwan Won, Young-Bum Kim
Life of this patent
Estimating the term…
Abstract
An apparatus and a method effectively adds and deletes a relay link in a communication system that includes a multiple relay system. The apparatus and method include determining by a relay mode controller whether to add or delete the relay link with consideration of at least one of a movement velocity of User Equipment (UE), a signal intensity of a Node-B and at least one relay station, and a channel state value of the UE. When addition or deletion of the relay link is determined, a message requesting addition of the relay link or a message informing deletion of the relay link is transmitted by a signaling processor to a relay station corresponding to the relay link whose addition or deletion has been determined.
Claims24
A method for adding and deleting, at a User Equipment (UE), a relay link in a communication system, the method comprising:
- determining whether to add the relay link based on a movement velocity of the UE, a signal intensity of a Node-B and at least one relay station, and a channel state value of the UE;
- transmitting a message requesting addition of the relay link to a relay station corresponding to the relay link, the relay station configured to relay signals between the UE and the Node-B over the relay link;
- determining whether to delete the relay link based on at least one of a movement velocity of the UE, a signal intensity of a Node-B and at least one relay station, and a channel state value of the UE;
- and
- transmitting a message informing deletion of the relay link to a relay station corresponding to the relay link.
A method for controlling, at a relay station, addition of a relay link in a communication system, the method comprising:
- when a request message requesting addition of the relay link is received from a User Equipment (UE), determining whether to accept addition of the relay link based on a total transmit carrier power;
- and
- transmitting a response message comprising information as to whether the addition of the relay link is accepted to the UE,
- wherein the request message comprises information regarding a Secondary-Common Pilot Channel (S-CPICH) allocated to the relay station, and wherein the request message is transmitted using one of a system information region of a Radio Resource Control (RRC) message and a message region of a Random Access Channel (RACH).
An apparatus of User Equipment (UE) for adding and deleting a relay link in communication system, the apparatus comprising:
- a relay mode controller configured to determine whether to add the relay link based on a movement velocity of the UE, a signal intensity of a Node-B and at least one relay station, and a channel state value of the UE, and determine whether to delete the relay link based on at least one of a movement velocity of the UE, a signal intensity of a Node-B and at least one relay station, and a channel state value of the UE;
- and
- a signaling processor configured to generate a message requesting addition of the relay link when addition of the relay link is determined and generate a message informing deletion of the relay link when deletion of the relay link is determined,
- wherein the message requesting addition of the relay link or the message informing deletion of the relay link are transmitted to a relay station corresponding to the relay link, the relay station configured to relay signals between the UE and the Node-B over the relay link.
An apparatus of a relay station, for controlling addition of a relay link in a communication system, the apparatus comprising:
- a relay mode determining unit configured to, when a request message requesting addition of the relay link is received from a User Equipment (UE), determine whether to accept addition of the relay link based on a total transmit carrier power;
- and
- a signaling processor configured to generate a message to be transmitted to the UE, the message comprising information as to whether the addition of the relay link is accepted,
- wherein the request message comprises information regarding a Secondary-Common Pilot Channel (S-CPICH) allocated to the relay station and wherein the request message is transmitted using one of a system information region of a Radio Resource Control (RRC) message and a message region of a Random Access Channel (RACH).
Dependencies are inferred from the claim text.