Service-based cell selection and reselection
First Claim
1. A method of wireless communication, comprising:
- detecting, by a user equipment (UE), activation of an upper layer service of the UE;
determining, by the UE in response to the activation, one or more operating parameters based on an operating requirement of the upper layer service of the UE;
filtering, by the UE, a plurality of cells that each comprises a service indicator, to determine a subset of cells from the plurality of cells that satisfies the one or more operating parameters based on the service indicator;
measuring, by the UE after the filtering, a radio condition of each cell from the subset of cells;
selecting, by the UE in response to the measuring each cell from the subset of cells, a cell whose radio condition is better than radio conditions of remaining cells from the subset of cells for camping;
camping, by the UE, on the selected cell in response to the selecting;
receiving, by the UE while camping on the selected cell, updated service availability information from the selected cell; and
performing, by the UE in response to receiving the updated service availability information, cell reselection to another cell based on a comparison between the updated service availability information and the one or more operating parameters determined for the upper layer service of the UE.
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Accused Products
Abstract
Systems and techniques are disclosed for selecting service-specific cells that considers additional information about service availability at the cells. A base station stores service availability information in system information. A UE searching for a service-specific cell on which to camp receives the system information with service availability. The UE analyzes its service requirements against the service availability as well as measured radio conditions and selects a cell that enables service-specific support on which to camp. When a change occurs to availability of the service support at the base station, it notifies the camped UE of the change and the UE obtains the changed system information to determine whether to reselect a different cell on which to camp. When a service-specific cell is not available, the UE may select a suitable cell for normal service and periodically perform cell reselection in an attempt to again camp on a service-specific cell.
16 Citations
19 Claims
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1. A method of wireless communication, comprising:
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detecting, by a user equipment (UE), activation of an upper layer service of the UE; determining, by the UE in response to the activation, one or more operating parameters based on an operating requirement of the upper layer service of the UE; filtering, by the UE, a plurality of cells that each comprises a service indicator, to determine a subset of cells from the plurality of cells that satisfies the one or more operating parameters based on the service indicator; measuring, by the UE after the filtering, a radio condition of each cell from the subset of cells; selecting, by the UE in response to the measuring each cell from the subset of cells, a cell whose radio condition is better than radio conditions of remaining cells from the subset of cells for camping; camping, by the UE, on the selected cell in response to the selecting; receiving, by the UE while camping on the selected cell, updated service availability information from the selected cell; and performing, by the UE in response to receiving the updated service availability information, cell reselection to another cell based on a comparison between the updated service availability information and the one or more operating parameters determined for the upper layer service of the UE. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A non-transitory computer-readable medium having program code recorded thereon, the program code comprising:
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code for causing a user equipment (UE) to detect activation of an upper layer service of the UE; code for causing the UE to determine, in response to the activation, one or more operating parameters based on an operating requirement of the upper layer service of the UE; code for causing the UE to filter a plurality of cells that each comprise a service indicator, to determine a subset of cells from the plurality of cells that satisfies the one or more operating parameters based on the service indicator; code for causing the UE to measure, after filtering the plurality of cells, a radio condition of each cell from the subset of cells; code for causing the UE to select, in response to measuring each cell from the subset of cells, a cell whose radio condition is better than radio conditions of remaining cells from the subset of cells for camping; code for causing the UE to camp on the selected cell in response to the selecting; code for causing the UE to receive, while camping on the selected cell, updated service availability information from the selected cell; and code for causing the UE to perform in response to receiving the updated service availability information, cell reselection to another cell based on a comparison between the updated service availability information and the one or more operating parameters determined for the upper layer service of the UE. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification