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Cell reselection method, user equipment and network-side equipment

A technology of cell reselection and user equipment, applied in the field of communication

Active Publication Date: 2017-06-20
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This also means that after the UE reselects a cell, if the new resident cell does not belong to the same slice as the original resident cell, it also needs to update the slice. This is the same as the RNA update, and it will also generate signaling overhead.

Method used

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  • Cell reselection method, user equipment and network-side equipment
  • Cell reselection method, user equipment and network-side equipment
  • Cell reselection method, user equipment and network-side equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 5

[0187] Embodiment 5: The network side device broadcasts the RNA information of the cell where the UE is currently camped on, and the increased priority offset for the RNA;

[0188] It is assumed that the RAN area ID of the RNA to which the Inactive UE belongs includes two, namely {RAN area ID 1, RAN area ID 2}.

[0189] Inactive UE resides in cell 1, which belongs to RAN area ID 1, and there are neighboring cells around cell 1: cell 2, which belongs to RAN area ID 1; cell 3, which belongs to RAN area ID 1; cell 4, which belongs to RAN area ID 2 ;cell 5, belongs to RAN area ID 3;,

[0190] Step 1: The network side device broadcasts the RNA information of the cell 1 where the UE currently resides, including the RAN area ID1 to which cell 1 belongs, and an offset applicable to the inactive state;

[0191] Step 2: The Inactive UE resides in cell 1. When performing cell reselection, it first scans the surrounding neighboring cells, reads the system information of the neighboring c...

Embodiment 9

[0215] Embodiment 9: The network side device broadcasts the RNA information and slice information of the cell where the UE currently resides, the list of neighboring cells belonging to the RNA area and other surrounding RNA areas, and the list of neighboring cells belonging to the slice and other surrounding slices.

[0216] Assume that the RAN area ID of the RNA to which the Inactive UE belongs includes two, namely {RAN area ID 1, RANarea ID 2}, and the slice to which it belongs is slice 1.

[0217] The Inactive UE resides in cell 1, which belongs to RAN area ID 1, and the slice to which it belongs is slice1. There are adjacent cells around cell 1: cell 2, its RNA belongs to RAN area ID 1, and its slice belongs to slice 1; cell3, its RNA belongs to RAN area ID 1, and its slice belongs to slice 2; cell 4, its RNA belongs to RAN area ID 2, whose slice belongs to slice 2; cell 5, whose RNA belongs to RAN area ID3, whose slice belongs to slice1; cell 6, whose RNA belongs to RAN a...

Embodiment 10

[0220] Embodiment 10: The network side device broadcasts the RNA information and slice information of the cell where the UE is currently camped on, a list of neighboring cells belonging to the RNA area and other surrounding RNA areas, and a list of neighboring cells belonging to the slice and other surrounding slices. At the same time, there are offset1 set for the same RNA belonging to the current resident cell, and offset2 set for the same slice belonging to the current resident cell.

[0221] Assume that the RAN area ID of the RNA to which the Inactive UE belongs includes two, namely {RAN area ID 1, RANarea ID 2}, and the slice to which it belongs is slice 1.

[0222] The Inactive UE resides in cell 1, which belongs to RAN area ID 1, and the slice to which it belongs is slice1. There are adjacent cells around cell 1: cell 2, its RNA belongs to RAN area ID 1, and its slice belongs to slice 1; cell3, its RNA belongs to RAN area ID 1, and its slice belongs to slice 2; cell 4, ...

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Abstract

The invention provides a cell reselection method, user equipment and network-side equipment. The cell reselection method applied to the user equipment comprises the steps of receiving system information broadcast by a cell, wherein the system information carries information of an RNA (RAN Notification Area) and / or a slice to which the cell belongs; when cell reselection is required to be performed, preferentially selecting a cell which belongs to the same RNA and / or slice to which a currently residing cell of the user equipment belongs as a target cell; and residing in the target cell. The scheme provided by the invention can enable the user equipment to preferentially select a cell which does not need to perform RNA update and / or slice update to reside as far as possible when performing cell reselection, thereby reducing the update frequency of the RNA and / or the slice, thus effectively reducing unnecessary signaling overhead generated by cell reselection, and ensuring the user experience.

Description

technical field [0001] The present invention relates to the communication field, in particular to a cell reselection method, user equipment and network side equipment. Background technique [0002] In order to ensure terminal power saving and fast data transmission at the same time, a new mobility state RRC_INACTIVE is introduced in the 5G New RAT (New Radio) system, which is the inactive state of the UE. When the UE is in this state, although the RAN (Radio Access Network) node releases the RRC connection of the UE, it still reserves the connection to the core network of the UE. [0003] The UE side and the RAN node store the UE AS context, so that they can quickly restore to the connected state or remain in the inactive state and send / receive data; [0004] The UE is transparent to the core network in the inactive state, that is, the core network still believes that the UE is always in the connected state, so downlink signaling or data will reach the RAN node. In order t...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W36/00H04W36/08H04W48/10H04W48/16
CPCH04W24/02H04W36/0005H04W36/08H04W48/10H04W48/16H04W60/04H04W48/12H04W48/20
Inventor 傅婧梁靖张元
Owner DATANG MOBILE COMM EQUIP CO LTD
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