Anchor carrier in a multiple carrier wireless communication system
First Claim
1. A method performed by a cell for coordinating carrier transmission between nodes, comprising:
- determining that a carrier frequency of the cell is designated as an anchor carrier for the cell;
communicating with a first user equipment (UE) via the anchor carrier based at least in part on a status of the first UE being in a connected mode or an idle mode;
determining that the carrier frequency is being used by a neighboring cell to provide wireless service to a second UE proximal to a location of the first UE and that the carrier frequency is designated as a non-anchor carrier for the neighboring cell; and
coordinating with the neighboring cell to reduce a transmit power of the non-anchor carrier based at least in part on the second UE being proximal to the location of the first UE and the carrier frequency being used as the non-anchor carrier by the neighboring cell.
1 Assignment
0 Petitions
Accused Products
Abstract
Multiple downlink (DL) and uplink (UL) carriers can enhance wireless communication between nodes and user equipment (UE). Among the carriers, it is beneficial to have some special, by configuration designated carriers to provide synchronization, system information, paging, data and control for multi-carrier enabled UEs. Thereby, overhead system information can be reduced. For instance, synchronization and paging for a certain cell are not provided on all carriers. A carrier can provide backward compatibility for single carrier UEs for access, synchronization, broadcast, and new control region within the data region of the legacy terminals. Coordination between nodes for selecting anchor carriers that mitigate interference and for transmit power control for non-anchor carriers provide further network performance advantages.
31 Citations
16 Claims
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1. A method performed by a cell for coordinating carrier transmission between nodes, comprising:
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determining that a carrier frequency of the cell is designated as an anchor carrier for the cell; communicating with a first user equipment (UE) via the anchor carrier based at least in part on a status of the first UE being in a connected mode or an idle mode; determining that the carrier frequency is being used by a neighboring cell to provide wireless service to a second UE proximal to a location of the first UE and that the carrier frequency is designated as a non-anchor carrier for the neighboring cell; and coordinating with the neighboring cell to reduce a transmit power of the non-anchor carrier based at least in part on the second UE being proximal to the location of the first UE and the carrier frequency being used as the non-anchor carrier by the neighboring cell. - View Dependent Claims (2, 3, 4)
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5. An apparatus, comprising:
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a processor; and memory coupled to the processor, wherein the memory stores executable instructions that when executed by the processor cause the apparatus to perform the operations comprising; determine that a carrier frequency of the apparatus is designated as an anchor carrier for the apparatus; communicate with a first user equipment (UE) via the anchor carrier based at least in part on a status of the first UE being in a connected mode or an idle mode; determine that the carrier frequency is being used by a neighboring cell to provide wireless service to a second UE proximal to a location of the first UE and that the carrier frequency is designated as a non-anchor carrier for the neighboring cell; and coordinate with the neighboring cell to reduce a transmit power of the non-anchor carrier based at least in part on the second UE being proximal to the location of the first UE and the carrier frequency being used as the non-anchor carrier by the neighboring cell. - View Dependent Claims (6, 7, 8)
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9. A method performed by a first cell for coordinating carrier frequency transmission between nodes, comprising:
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determining that a carrier frequency used by the first cell to provide wireless service to a first user equipment (UE) is designated as a non-anchor carrier for the first cell; communicating with the first UE via the non-anchor carrier based at least in part on a status of the first UE being in a connected mode; determining that the carrier frequency is being used by a second cell to provide wireless service to a second UE proximal to a location of the first UE and that the carrier frequency is designated as an anchor carrier for a second cell; and coordinating with the second cell to reduce a transmit power of the non-anchor carrier based at least in part on the second UE being proximal to the location of the first UE and the carrier frequency being used as the non-anchor carrier by the first cell. - View Dependent Claims (10, 11, 12)
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13. An apparatus, comprising:
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a processor; and memory coupled to the processor, wherein the memory stores executable instructions that when executed by the processor cause the apparatus to perform the operations comprising;
determine that a carrier frequency used by a first cell of the apparatus to provide wireless service to a first user equipment (UE) is designated as a non-anchor carrier for the apparatus;
determining that the carrier frequency is being used by a second cell to provide wireless service to a second UE proximal to a location of the first UE and that the carrier frequency is designated as an anchor carrier for a second cell; andcoordinating with the second cell to reduce a transmit power of the non-anchor carrier frequency based at least in part on the second UE being proximal to the location of the first UE and the carrier frequency being used as the non-anchor carrier by the first cell. - View Dependent Claims (14, 15, 16)
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Specification