Cell switching methods and equipment

A technology of cell handover and target cell, applied in electrical components, wireless communication, synchronization devices, etc., can solve problems such as uplink synchronization failure, and achieve the effect of avoiding uplink synchronization failure

Active Publication Date: 2012-07-11
DATANG MOBILE COMM EQUIP CO LTD
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The embodiment of the present invention provides a HSUPA handover method and equipment to solve the problem of uplink synchronization failure after handover existing in the existing HSUPA handover technology

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cell switching methods and equipment
  • Cell switching methods and equipment
  • Cell switching methods and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] According to the above description of the prior art, it can be known that the synchronization method after the existing HSUPA terminal switches to the target cell leads to no uplink rate or handover call drop. The root cause is that the UpPCH Position Info in the Multi-frequency Info can only carry one frequency point Therefore, it is only allowed to fill in the UpPCH position of the main frequency point or the UpPCH position of the HSUPA secondary frequency point. If the terminal knows both the UpPCH position used for normal uplink synchronization (that is, the UpPCH position of the main frequency point) and the UpPCH position used for enhanced uplink synchronization (that is, the UpPCH position of the HSUPA secondary frequency point), this problem can be solved fundamentally.

[0049] Based on the above analysis, this embodiment proposes that an IE (information element) is added to the handover command sent from the network side to the terminal to carry the UpPCH posit...

Embodiment 2

[0064] In this embodiment, under the premise of not upgrading the existing protocol, the UpPCH position is adjusted in a timely manner according to the interference situation, and the UpPCH position of the HSUPA secondary frequency point and the main frequency point are guaranteed to be the same. In this way, the main frequency point or The UpPCH position information of the HSUPA secondary frequency point (the UpPCH position of the primary frequency point and the secondary frequency point are the same), the UE can use the UpPCH position of the primary frequency point of the target cell and the HSUPA secondary frequency point, and the primary frequency point of the target cell. The FPACH resource information for common access and the FPACH resource information for enhanced access on the HSUPA secondary frequency point of the target cell are used for uplink synchronization.

[0065] see figure 2 , which is a schematic diagram of a HSUPA handover process provided in Embodiment 2...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses cell switching methods and equipment. According to one cell switching method, a switching command that is sent by a radio network controller (RNC) to a terminal is expanded and thus the switching command not only carries an uplink physical channel (UpPCH) position information of a target cell main frequency point but also carries UpPCH position information of a target cell auxiliary frequency point, so that the UpPCH positions of the main frequency point and the auxiliary frequency point are different; and under circumstances that the target cell uses high speed uplink packet access (HSUPA) resources of the auxiliary frequency point, the terminal carries out uplink synchronization respectively at the main frequency point and the auxiliary frequency point. Meanwhile, according to the other method, UpPCH positions of a main frequency point and an auxiliary frequency point are adjusted into a same position; and under circumstances that a current switching command is not changed, UpPCH position information carried in the switching command is used to express the UpPCH position of the main frequency point and the UpPCH position of the auxiliary frequency point; and moreover, it is ensured that UpPCH interference of the main frequency point and the auxiliary frequency point at the UpPCH position are in a certain range, so that the terminal carries out uplink synchronization respectively at the main frequency point and the auxiliary frequency point. According to the invention, it can be avoided that uplink synchronization fails after HSUPA switching.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a cell switching method and equipment thereof. Background technique [0002] When an HSUPA (High Speed ​​Uplink Packet Access, High Speed ​​Uplink Packet Access) terminal is handed over to the target cell and the resources of the HSUPA secondary frequency point are allocated, there are currently two synchronization methods: method 1, the HSUPA terminal is at the HSUPA secondary frequency point at the same time Ordinary uplink synchronization and enhanced uplink synchronization are carried out, but from the results of practical applications, most terminal manufacturers do not support this synchronization method; method two, HSUPA terminals perform ordinary uplink synchronization at the main frequency point, and HSUPA auxiliary frequency Enhanced uplink synchronization is carried out at the same time, which is a synchronization method commonly used by terminal manufact...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/08H04W56/00
Inventor 张爽
Owner DATANG MOBILE COMM EQUIP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap