Serving cell updating method and device

A technology for serving cell and cell update, applied in the field of communication, which can solve problems such as UE power consumption and complex measurement mechanism

Active Publication Date: 2018-02-23
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the measurement mechanism of the above handover process is relatively complicated,

Method used

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  • Serving cell updating method and device
  • Serving cell updating method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0135] Such as figure 2 As shown, it is a flow chart of the serving cell update method provided in Embodiment 1 of the present application, including the following steps:

[0136] S201: A user equipment (User Equipment, UE) in a connected state selects a target cell.

[0137] Here, the UE in the connected state can follow the existing cell reselection principle in the idle state (method 1), or the serving cell can specially configure target cell selection parameters for it (mode 2).

[0138] Mode 1: The UE in the connected state selects a target cell based on cell reselection rules and cell reselection parameters.

[0139] Here, the UE may receive cell reselection parameters broadcast by the system (for example, the system information block SIB3 broadcasts common cell reselection information, SIB4 broadcasts same-frequency cell reselection information, and SIB5 broadcasts inter-frequency cell reselection information, etc.); or, Receive cell reselection parameters sent by th...

Embodiment 2

[0161] In this embodiment, the UE selects a target cell by using information related to cell reselection.

[0162] Such as image 3 As shown, it is a flow chart of the serving cell update method provided in Embodiment 2 of the present application, including the following steps:

[0163] S301: The UE in the connected state acquires cell reselection parameters in the idle state.

[0164] Here, the current serving cell broadcasts cell reselection parameters through the system, such as SIB3 broadcasts some common cell reselection information, SIB4 broadcasts same-frequency cell reselection information, and SIB5 broadcasts inter-frequency cell reselection information, etc. The UE obtains cell reselection parameters by reading system information. Alternatively, the current serving cell sends the cell reselection related information to the UE in the connected state through dedicated signaling.

[0165] S302: The UE in the connected state selects a target cell based on the cell res...

Embodiment 3

[0175] In the third embodiment, the UE selects the target cell by using the target cell selection parameter in the connected state sent by the serving cell through RRC dedicated signaling.

[0176] Such as Figure 4 As shown, it is a flow chart of the serving cell update method provided in Embodiment 3 of the present application, including the following steps:

[0177] S401: The serving cell sends target cell selection parameters to the connected UE through RRC dedicated signaling.

[0178] Here, the serving cell sends the measurement object information, measurement report configuration information, measurement enable threshold, etc. to the UE in the connected state through RRC dedicated signaling. For example, configure {measurement object ID 1, the measurement object is frequency point 1; measurement report ID 1, the measurement report is configured as A3 event and A3 event related parameters}, {measurement object ID 2, the measurement object is frequency point 2; measureme...

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Abstract

The invention relates to the technical field of communication, and particularly relates to a serving cell updating method and device. The method and device supports service continuity while UE moves,and lowers UE power consumption. The serving cell updating method comprises the steps that UE in a connection state selects a target cell; and the UE initiates updating of a serving cell based on theselected target cell. According to the method, the UE in the connection state selects the target cell independently, and initiates updating of the serving cell based on the selected target cell. The UE does not need to report measurement results for many times, so that the service continuity is maintained, and the UP power consumption is lowered.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a method and device for updating a serving cell. Background technique [0002] The Narrow Band Internet of Things (NB-IoT) Work Phase (Work Item, WI) was adopted and launched in Release 13 of the 3rd Generation Partnership Project (3GPP). [0003] The goal of the NB-IoT WI phase is to standardize the wireless access of the Cellular Internet of Things (CIoT), based on Long Term Evolution (LTE) / Enhanced Long Term Evolution (LTE-Advanced, LTE- A) Carry out technical expansion to achieve enhanced indoor coverage, support a large number of low-speed device access, low latency sensitivity, reduce device cost, reduce device power consumption, optimize network architecture, etc. [0004] In order to be suitable for information transmission with a small amount of data, 3GPP Release 13 introduces a control plane (Control Plane, CP) solution and a (User Plane, UP) so...

Claims

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Application Information

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IPC IPC(8): H04W24/10H04W36/00H04W36/14H04W36/18H04W52/02
CPCH04W24/10H04W36/0055H04W36/14H04W36/18H04W52/0209Y02D30/70
Inventor 傅婧梁靖
Owner DATANG MOBILE COMM EQUIP CO LTD
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