BATTERY EFFICIENT METHOD TO SEARCH FOR PREFERRED FEMTOCELL
First Claim
1. A method for reliable and power-efficient discovery of a preferred node, comprising:
- employing a processor executing computer executable instructions stored on a computer readable storage medium to implement following acts;
measuring signal quality of a wireless channel transmitted by a serving node;
determining the signal quality to be above a threshold, wherein being below the threshold indicates a need to prepare for cell reselection to a neighboring node;
periodically performing measurements for neighboring nodes; and
periodically performing measurements for a preferred node at a slower repetition rate than the measurements for neighboring nodes in response to the signal quality being above the threshold.
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Accused Products
Abstract
Mobile user equipment (MUE) can be enabled to search for and camp on a preferred node, such as a home base node (HBN), in a battery-efficient manner even when currently camped on another node, such as a macro base node (MBN). When the MBN provides good channel quality, slow rate background intra- and inter-frequency searches can discover the preferred HBN that would otherwise not be discovered or would consume excessive power with continual searching. When channel quality is fair, slow rate background inter-frequency searches can result in timely switching to the preferred HBN. Location hints that indicate proximity of the preferred HBN can be used to trigger slow rate background searches. Neighboring cell searching of neighbor cell listing (NCL) when in channel quality is fair or poor are maintained to prepare for call reselections to available node.
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Citations
50 Claims
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1. A method for reliable and power-efficient discovery of a preferred node, comprising:
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employing a processor executing computer executable instructions stored on a computer readable storage medium to implement following acts; measuring signal quality of a wireless channel transmitted by a serving node; determining the signal quality to be above a threshold, wherein being below the threshold indicates a need to prepare for cell reselection to a neighboring node; periodically performing measurements for neighboring nodes; and periodically performing measurements for a preferred node at a slower repetition rate than the measurements for neighboring nodes in response to the signal quality being above the threshold. - 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 computer program product for reliable and power-efficient discovery of a preferred node, comprising:
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at least one computer readable storage medium storing computer executable instructions that, when executed by at least one processor, implement components comprising; a first set of instructions for causing a computer to measure signal quality of a wireless channel transmitted by a serving node; a second set of instructions for causing the computer to determine the signal quality to be above a threshold, wherein being below the threshold indicates a need to prepare for cell reselection to a neighboring node; a third set of instructions for causing the computer to periodically perform measurements for neighboring nodes; and a fourth set of instructions for causing the computer to periodically perform measurements for a preferred node at a slower repetition rate than the measurements for neighboring nodes in response to the signal quality being above the threshold.
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20. An apparatus for reliable and power-efficient discovery of a preferred node, comprising:
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at least one processor; at least one computer readable storage medium storing computer executable instructions that, when executed by the at least one processor, implement components comprising; means for measuring signal quality of a wireless channel transmitted by a serving node; means for determining the signal quality to be above a threshold, wherein being below the threshold indicates a need to prepare for call reselection to a neighboring node; means for periodically performing measurements for neighboring nodes; and means for periodically performing measurements for a preferred node at a slower repetition rate than the measurements for neighboring nodes in response to the signal quality being above the threshold.
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21. An apparatus for reliable and power-efficient discovery of a preferred node, comprising:
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a receiver for measuring signal quality of a wireless channel transmitted by a serving node; and a computing platform for, determining the signal quality to be above a threshold, wherein being below the threshold indicates a need to prepare for cell reselection to a neighboring node, causing the receiver to periodically perform measurements for neighboring nodes, and causing the receiver to periodically perform measurements for a preferred node at a slower repetition rate than the measurements for neighboring nodes in response to the signal quality being above the threshold. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A method for facilitating reliable and power-efficient discovery of a preferred node, comprising:
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employing a processor executing computer executable instructions stored on a computer readable storage medium to implement following acts; serving a mobile device as a serving node by transmitting and receiving wireless data packet communication; and facilitating discovery by the mobile device of a preferred node by broadcasting a scrambling code used by the preferred node to the mobile device, wherein the mobile device periodically performs measurements for a preferred node at a slower repetition rate than the measurements for neighboring nodes in response to the signal quality being above the threshold. - View Dependent Claims (40, 41, 42, 43)
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44. A computer program product for facilitating reliable and power-efficient discovery of a preferred node, comprising:
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at least one processor; at least one computer readable storage medium storing computer executable instructions that, when executed by the at least one processor, implement components comprising; a first set of instructions for causing a computer to serve a mobile device as a serving node by transmitting and receiving wireless data packet communication; and a second set of instructions for causing the computer to facilitate discovery by the mobile device of a preferred node by broadcasting a scrambling code used by the preferred node to the mobile device, wherein the mobile device periodically performs measurements for a preferred node at a slower repetition rate than the measurements for neighboring nodes in response to the signal quality being above the threshold.
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45. An apparatus for facilitating reliable and power-efficient discovery of a preferred node, comprising:
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at least one computer readable storage medium storing computer executable instructions that, when executed by at least one processor, implement components comprising; means for serving a mobile device as a serving node by transmitting and receiving wireless data packet communication; and means for facilitating discovery by the mobile device of a preferred node by broadcasting a scrambling code used by the preferred node to the mobile device, wherein the mobile device periodically performs measurements for a preferred node at a slower repetition rate than the measurements for neighboring nodes in response to the signal quality being above the threshold.
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46. An apparatus for facilitating reliable and power-efficient discovery of a preferred node, comprising:
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a receiver for receiving wireless data packet communication service from a mobile device as a serving node; a computing platform for accessing a scrambling code used by a preferred node; and a transmitter for broadcasting the scrambling code to the mobile device facilitating discovery by the mobile device of a preferred node, wherein the mobile device periodically performs measurements for a preferred node at a slower repetition rate than the measurements for neighboring nodes in response to the signal quality being above the threshold. - View Dependent Claims (47, 48, 49, 50)
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Specification