Method and arrangement for signaling of parameters in a wireless network
First Claim
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1. A method in a user equipment, the method comprising:
- receiving, over a first cell configured on a carrier frequency, a request to add a second cell as a secondary cell (SCell) for carrier aggregation, the second cell being configured on the same or another carrier frequency, the request comprising parameters associated with the second cell, wherein the parameters comprise a cell identity and a number of transmit antenna ports associated with the second cell;
deriving at least one physical layer characteristic that is required to establish communication with the second cell based on the received parameters, thereby enabling the user equipment to receive data transmissions over the second cell without receiving the number of transmit antenna ports from the second cell; and
once communication is established with the second cell using the at least one physical layer characteristic, performing carrier aggregation of data transmissions received over the first cell and the second cell, with the first cell as a primary cell (PCell) and the second cell as the SCell;
wherein the parameters are received in a dedicated message to the user equipment.
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Abstract
A mobile terminal receives, over a first cell configured on a carrier frequency, at least one parameter associated with a second cell configured on a carrier frequency. The at least one parameter comprises a cell identity. The mobile terminal then derives at least one physical layer characteristic for the second cell based on the received at least one parameter. Thereby, the mobile terminal is able to receive transmissions over the second cell, even if it could not initially detect the presence of the cell.
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Citations
22 Claims
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1. A method in a user equipment, the method comprising:
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receiving, over a first cell configured on a carrier frequency, a request to add a second cell as a secondary cell (SCell) for carrier aggregation, the second cell being configured on the same or another carrier frequency, the request comprising parameters associated with the second cell, wherein the parameters comprise a cell identity and a number of transmit antenna ports associated with the second cell; deriving at least one physical layer characteristic that is required to establish communication with the second cell based on the received parameters, thereby enabling the user equipment to receive data transmissions over the second cell without receiving the number of transmit antenna ports from the second cell; and once communication is established with the second cell using the at least one physical layer characteristic, performing carrier aggregation of data transmissions received over the first cell and the second cell, with the first cell as a primary cell (PCell) and the second cell as the SCell; wherein the parameters are received in a dedicated message to the user equipment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method in a network node, the network node serving a first cell configured on a carrier frequency, the method comprising:
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transmitting, over the first cell and to a user equipment, a request to add a second cell as a secondary cell (SCell) for carrier aggregation, the second cell being configured on the same or another carrier frequency as the first cell, the request comprising parameters associated with the second cell, wherein the parameters comprise a cell identity and a number of transmit antenna ports associated with the second cell, and an indication to use the parameters to derive at least one physical layer characteristic that is required to establish communication with the second cell, thereby enabling the user equipment to receive data transmissions over the second cell without receiving the number of transmit antenna ports from the second cell, and to perform carrier aggregation of data transmissions received over the first cell and the second cell, with the first cell as a primary cell (PCell) and the second cell as the SCell; wherein the user equipment is connected to the first cell; and wherein the transmitting is performed in a dedicated message to the user equipment. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A user equipment, comprising a transceiver and one or more processing circuits, wherein the processing circuits are configured to:
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receive, over a first cell configured on a carrier frequency, a request to add a second cell as a secondary cell (SCell) for carrier aggregation, the second cell being configured on the same or another carrier frequency, the request comprising parameters associated with the second cell, wherein the parameters comprise a cell identity and a number of transmit antenna ports associated with the second cell; derive at least one physical layer characteristic that is required to establish communication with the second cell based on the received parameters, thereby enabling the user equipment to receive data transmissions over the second cell without receiving the number of transmit antenna ports from the second cell; and once communication is established with the second cell using the at least one physical layer characteristic, perform carrier aggregation of data transmissions received over the first cell and the second cell, with the first cell as a primary cell (PCell) and the second cell as the SCell; wherein the parameters are received in a dedicated message to the user equipment.
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20. A network node, comprising a transceiver and one or more processing circuits, the processing circuits being configured to:
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transmit, over a first cell configured on a carrier frequency and to a user equipment, a request to add a second cell as a secondary cell (SCell) for carrier aggregation, the second cell being configured on the same or another carrier frequency as the first cell, the request comprising parameters associated with the second cell, wherein the parameters comprise a cell identity and a number of transmit antenna ports associated with the second cell, and an indication to use the parameters to derive at least one physical layer characteristic that is required to establish communication with the second cell, thereby enabling the user equipment to receive data transmissions over the second cell without receiving the number of transmit antenna ports from the second cell, and to perform carrier aggregation of data transmissions received over the first cell and the second cell, with the first cell as a primary cell (PCell) and the second cell as the SCell; wherein the user equipment is connected to the first cell; and wherein the transmitting is performed in a dedicated message to the user equipment.
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21. A method in a wireless communication system, the system comprising a network node and a user equipment, the network node serving a first cell configured on a carrier frequency, the method comprising:
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transmitting, by the network node and over a first cell, a request to add a second cell as a secondary cell (SCell) for carrier aggregation, the second cell being configured on the same or another carrier frequency as the first cell, the request comprising parameters associated with the second cell, wherein the parameters comprise a cell identity and a number of transmit antenna ports associated with the second cell; receiving, by the user equipment and over the first cell, the parameters associated with the second cell, wherein the parameters are received in a dedicated message to the user equipment; deriving, at the user equipment, at least one physical layer characteristic that is required to establish communication with the second cell based on the cell identity and the number of transmit antenna ports received from the first cell, thereby enabling the user equipment to receive data transmissions over the second cell without receiving the number of transmit antenna ports from the second cell; and once communication is established with the second cell using the at least one physical layer characteristic, performing carrier aggregation of data transmissions received over the first cell and the second cell, with the first cell as a primary cell (PCell) and the second cell as the SCell.
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22. A wireless communication system comprising:
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a network node comprising a transceiver and one or more processing circuits configured to transmit, over a first cell configured on a carrier frequency, a request to add a second cell as a secondary cell (SCell) for carrier aggregation, the second cell being configured on the same or another carrier frequency as the first cell, the request comprising parameters associated with the second cell, wherein the parameters comprise a cell identity and a number of transmit antenna ports associated with the second cell; and a user equipment comprising a transceiver and one or more processing circuits configured to; receive, over the first cell, the parameters associated with the second cell; and derive at least one physical layer characteristic that is required to establish communication with the second cell based on the cell identity and the number of transmit antenna ports received from the first cell, thereby enabling the user equipment to receive data transmissions over the second cell without receiving the number of transmit antenna ports from the second cell; and once communication is established with the second cell using the at least one physical layer characteristic, perform carrier aggregation of data transmissions received over the first cell and the second cell, with the first cell as a primary cell (PCell) and the second cell as the SCell; wherein the parameters are received in a dedicated message to the user equipment.
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Specification