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Cell updating method and user equipment for CELL_FACH state

A cell update and user equipment technology, applied in the field of communication, can solve problems such as interference from adjacent cells, achieve the effects of reducing power consumption, saving power resources, and reducing strong interference

Inactive Publication Date: 2012-09-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a cell update method and user equipment for CELL_FACH state, so as to solve the problem in the related art that when the signal strength of the current cell is very weak, the UE sends a cell update notification message to the source base station, which will cause interference to neighboring cells.

Method used

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  • Cell updating method and user equipment for CELL_FACH state
  • Cell updating method and user equipment for CELL_FACH state
  • Cell updating method and user equipment for CELL_FACH state

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Embodiment Construction

[0025] Functional Overview

[0026] The main idea of ​​the present invention is: before updating the cell, the UE first compares the signal strength of the current cell with the pre-acquired threshold value, and when the signal strength of the current cell is greater than or equal to the threshold value, the UE sends the signal strength of the current cell The NodeB sends a cell update notification message and performs cell update; when the signal strength of the current cell is lower than the threshold, the UE directly performs cell update without sending a cell update notification message to the NodeB of the current cell.

[0027] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0028] method embodiment

[0029] Accor...

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Abstract

The invention discloses a cell updating method and user equipment for a CELL_FACH state, wherein the method comprises the following steps that: the user equipment determines that signal intensity of a current cell is compared with a pre-obtained threshold before updating the cell; and when determining that the signal intensity of the current cell is more than or equal to the threshold, the user equipment sends a cell updating notification message to a base station of the current cell and updates the cell. The cell updating method and the user equipment can reduce the interference on a neighbour cell caused when the user equipment sends the cell updating notification message to a source base station.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method for updating a cell in a CELL_FACH state and user equipment. Background technique [0002] According to the traditional cell forward access channel technology (CELL_FACH state), the terminal sends uplink data through a random access channel (Random Access Channel, referred to as RACH) and receives data through a forward access channel (Forward Access Channel, referred to as FACH). downlink data. The Packet Random Access Channel (PRACH) resource mapped by RACH is the common channel resource of the cell. The terminal obtains it through the physical random access process. The base station does not need to schedule the RACH resource. The terminal reflects the data according to the ASC selection process. Priority control; the Secondary Common Control Physical Channel (S-CCPCH) mapped by FACH is also the common channel resource of the cell, and the priority control of the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/10H04W68/00H04W74/08
Inventor 黄河
Owner ZTE CORP
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