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US 12,598,672 B2Granted
Method for cell reselection, terminal device, and computer-readable storage medium
AssigneeGuangdong Oppo Mobile Telecommunications Corp., Ltd.
InventorsXin You, Haitao Li, Shukun Wang, Zhe Fu
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Abstract
A method for cell reselection, a terminal device, and a computer-readable storage medium are provided in implementations of the disclosure. The method is applicable to a terminal device. The method includes performing cell reselection according to first information, where the first information includes location information of the terminal device.
Claims17
A method for cell reselection, being applicable to a terminal device and comprising:
- performing cell reselection according to first information, the first information comprising location information of the terminal device, and further comprising a reference signal receiving power (RSRP) or a reference signal received quality (RSRQ) measured by the terminal device;
- wherein performing cell reselection according to the first information comprises:
- determining a plurality of candidate cells according to the RSRP or the RSRQ;
- and
- determining a target cell according to the location information of the terminal device, wherein the plurality of candidate cells comprise the target cell;
- wherein determining the target cell according to the location information of the terminal device comprises:
- determining, according to the location information of the terminal device, an included angle between the terminal device and a network device for each candidate cell, to obtain a plurality of included angles, wherein the plurality of included angles are included angles between a line horizontal to earth at a location of the terminal device and the network device for each candidate cell;
- and
- determining the target cell according to the plurality of included angles and cell-coverage included angles for each of the plurality of candidate cells, wherein for each candidate cell, the cell-coverage included angles comprise a first cell-coverage included angle and a second cell-coverage included angle, the first cell-coverage included angle is an included angle between the network device for the candidate cell and a line horizontal to the earth at a right edge of the candidate cell, and the second cell-coverage included angle is an included angle between the network device for the candidate cell and a line horizontal to the earth at a left edge of the candidate cell;
- wherein determining the target cell comprises:
- in a case where a network-device coverage type of the target cell is a right-below coverage type, an included angle between the terminal device and the network device for the target cell is greater than both a first cell-coverage included angle for the target cell and a second cell-coverage included angle for the target cell;
- in a case where the network-device coverage type of the target cell is a bottom-left coverage type, the included angle between the terminal device and the network device for the target cell is greater than the first cell-coverage included angle for the target cell and less than the second cell-coverage included angle for the target cell;
- and
- in a case where the network-device coverage type of the target cell is the bottom-right coverage type, the included angle between the terminal device and the network device for the target cell is greater than the second cell-coverage included angle for the target cell and less than the first cell-coverage included angle for the target cell;
- wherein the plurality of candidate cells comprise a first candidate cell, a second candidate cell, and a third candidate cell;
- a network device for the first candidate cell is a first low-earth orbit (LEO) satellite, a network device for the second candidate cell is a second LEO satellite, and a network device for the third candidate cell is a third LEO satellite;
- a network-device coverage type of the first candidate cell is the right-below coverage type, a network-device coverage type of the second candidate cell is the bottom-left coverage type, and a network-device coverage type of the third candidate cell is the bottom-right coverage type;
- a first cell-coverage included angle for the first candidate cell 1 is represented as α1, and a second cell-coverage included angle for the first candidate cell is represented as β1;
- a first cell-coverage included angle for the second candidate cell is represented as α2, and a second cell-coverage included angle for the second candidate cell is represented as β2;
- a first cell-coverage included angle for the third candidate cell is represented as α3, and a second cell-coverage included angle for the third candidate cell is represented as β3;
- an included angle between the first LEO satellite and the terminal device is represented as included angle 1, an included angle between the second LEO satellite and the terminal device is represented as included angle 2, and an included angle between the third LEO satellite and the terminal device is represented as included angle 3;
- wherein in a case where included angle 1>α1 and included angle 1>β1, β2<included angle 2<α2, α3<included angle 3<β3, the first candidate cell is determined as the target cell in cell reselection performed by the terminal device.
19 more elements
A terminal device comprising:
- a processor;
- and
- a memory storing a computer program which, when executed by the processor, causes the terminal device to:
- perform cell reselection according to first information, the first information comprising location information of the terminal device, and further comprising a reference signal receiving power (RSRP) or a reference signal received quality (RSRQ) measured by the terminal device;
- wherein the computer program executed by the processor to cause the processor to perform cell reselection according to the first information causes the processor to:
- determine a plurality of candidate cells according to the RSRP or the RSRQ;
- and
- determine a target cell according to the location information of the terminal device, wherein the plurality of candidate cells comprise the target cell;
- wherein the computer program executed by the processor to cause the terminal device to determine the target cell according to the location information of the terminal device is executed by the processor to cause the terminal device to:
- determine, according to the location information of the terminal device, an included angle between the terminal device and a network device for each candidate cell, to obtain a plurality of included angles, wherein the plurality of included angles are included angles between a line horizontal to earth at a location of the terminal device and the network device for each candidate cell;
- and
- determine the target cell according to the plurality of included angles and cell-coverage included angles for each of the plurality of candidate cells, wherein for each candidate cell, the cell-coverage included angles comprise a first cell-coverage included angle and a second cell-coverage included angle, the first cell-coverage included angle is an included angle between the network device for the candidate cell and a line horizontal to the earth at a right edge of the candidate cell, and the second cell-coverage included angle is an included angle between the network device for the candidate cell and a line horizontal to the earth at a left edge of the candidate cell;
- wherein determining the target cell comprises:
- in a case where a network-device coverage type of the target cell is a right-below coverage type, an included angle between the terminal device and the network device for the target cell is greater than both a first cell-coverage included angle for the target cell and a second cell-coverage included angle for the target cell;
- in a case where the network-device coverage type of the target cell is a bottom-left coverage type, the included angle between the terminal device and the network device for the target cell is greater than the first cell-coverage included angle for the target cell and less than the second cell-coverage included angle for the target cell;
- and
- in a case where the network-device coverage type of the target cell is the bottom-right coverage type, the included angle between the terminal device and the network device for the target cell is greater than the second cell-coverage included angle for the target cell and less than the first cell-coverage included angle for the target cell;
- wherein the plurality of candidate cells comprise a first candidate cell, a second candidate cell, and a third candidate cell;
- a network device for the first candidate cell is a first low-earth orbit (LEO) satellite, a network device for the second candidate cell is a second LEO satellite, and a network device for the third candidate cell is a third LEO satellite;
- a network-device coverage type of the first candidate cell is the right-below coverage type, a network-device coverage type of the second candidate cell is the bottom-left coverage type, and a network-device coverage type of the third candidate cell is the bottom-right coverage type;
- a first cell-coverage included angle for the first candidate cell 1 is represented as α1, and a second cell-coverage included angle for the first candidate cell is represented as β1;
- a first cell-coverage included angle for the second candidate cell is represented as α2, and a second cell-coverage included angle for the second candidate cell is represented as β2;
- a first cell-coverage included angle for the third candidate cell is represented as α3, and a second cell-coverage included angle for the third candidate cell is represented as β3;
- an included angle between the first LEO satellite and the terminal device is represented as included angle 1, an included angle between the second LEO satellite and the terminal device is represented as included angle 2, and an included angle between the third LEO satellite and the terminal device is represented as included angle 3;
- wherein in a case where included angle 1>α1 and included angle 1>β1, β2<included angle 2<α2, α3<included angle 3<β3, the first candidate cell is determined as the target cell in cell reselection performed by the terminal device.
22 more elements
A non-transitory computer-readable storage medium storing a computer program, the computer program being executed by a processor of a terminal device to cause the terminal device to perform following:
- performing cell reselection according to first information, the first information comprising location information of a terminal device, and further comprising a reference signal receiving power (RSRP) or a reference signal received quality (RSRQ) measured by the terminal device;
- wherein performing cell reselection according to the first information comprises:
- determining a plurality of candidate cells according to the RSRP or the RSRQ;
- and
- determining a target cell according to the location information of the terminal device, wherein the plurality of candidate cells comprise the target cell;
- wherein determining the target cell according to the location information of the terminal device comprises:
- determining, according to the location information of the terminal device, an included angle between the terminal device and a network device for each candidate cell, to obtain a plurality of included angles, wherein the plurality of included angles are included angles between a line horizontal to earth at a location of the terminal device and the network device for each candidate cell;
- and
- determining the target cell according to the plurality of included angles and cell-coverage included angles for each of the plurality of candidate cells, wherein for each candidate cell, the cell-coverage included angles comprise a first cell-coverage included angle and a second cell-coverage included angle, the first cell-coverage included angle is an included angle between the network device for the candidate cell and a line horizontal to the earth at a right edge of the candidate cell, and the second cell-coverage included angle is an included angle between the network device for the candidate cell and a line horizontal to the earth at a left edge of the candidate cell;
- wherein determining the target cell comprises:
- in a case where a network-device coverage type of the target cell is a right-below coverage type, an included angle between the terminal device and the network device for the target cell is greater than both a first cell-coverage included angle for the target cell and a second cell-coverage included angle for the target cell;
- in a case where the network-device coverage type of the target cell is a bottom-left coverage type, the included angle between the terminal device and the network device for the target cell is greater than the first cell-coverage included angle for the target cell and less than the second cell-coverage included angle for the target cell;
- and
- in a case where the network-device coverage type of the target cell is the bottom-right coverage type, the included angle between the terminal device and the network device for the target cell is greater than the second cell-coverage included angle for the target cell and less than the first cell-coverage included angle for the target cell;
- wherein the plurality of candidate cells comprise a first candidate cell, a second candidate cell, and a third candidate cell;
- a network device for the first candidate cell is a first low-earth orbit (LEO) satellite, a network device for the second candidate cell is a second LEO satellite, and a network device for the third candidate cell is a third LEO satellite;
- a network-device coverage type of the first candidate cell is the right-below coverage type, a network-device coverage type of the second candidate cell is the bottom-left coverage type, and a network-device coverage type of the third candidate cell is the bottom-right coverage type;
- a first cell-coverage included angle for the first candidate cell 1 is represented as α1, and a second cell-coverage included angle for the first candidate cell is represented as β1;
- a first cell-coverage included angle for the second candidate cell is represented as α2, and a second cell-coverage included angle for the second candidate cell is represented as β2;
- a first cell-coverage included angle for the third candidate cell is represented as α3, and a second cell-coverage included angle for the third candidate cell is represented as β3;
- an included angle between the first LEO satellite and the terminal device is represented as included angle 1, an included angle between the second LEO satellite and the terminal device is represented as included angle 2, and an included angle between the third LEO satellite and the terminal device is represented as included angle 3;
- wherein in a case where included angle 1>α1 and included angle 1>β1, β2<included angle 2<α2, α3<included angle 3<β3, the first candidate cell is determined as the target cell in cell reselection performed by the terminal device.
19 more elements
Dependencies are inferred from the claim text.