Supercharge Your Innovation With Domain-Expert AI Agents!

Power control method of TFCI field against shared downlink channel

A technique of transport format combination and shared channel, applied in the field of power control of the transport format combination identifier field of the downlink shared channel

Inactive Publication Date: 2009-10-21
LG ELECTRONICS INC
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, developers will be confused during the development of 3GPP asynchronous systems and terminals using TFCI power control in DSCH hard split mode using conventional techniques

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
  • Power control method of TFCI field against shared downlink channel
  • Power control method of TFCI field against shared downlink channel
  • Power control method of TFCI field against shared downlink channel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0135] This embodiment relates to the signaling procedure of the TFCI power offset for the DPCCH that transmits TFCI2 when performing a soft handoff between an RNC containing a base station in which a DCH sends a DSCH and another RNC.

[0136] As described in the first method (method-1a), by adding a new field in the user level to carry the TFCI power offset value for sending out the TFCI2 value when the associated DCH soft handover is performed DPCCH, thus forming a new type of control frame. In the case that the normal TFCI power offset value of R99 / R4 should be transmitted after handover, a normal TFCI power offset value can be carried by the corresponding field.

[0137] To carry the TFCI power offset value, as a first procedure, it can be found in Figure 8 A new field for TFCI power control is added to the traditional "radio interface parameter update" frame shown, or another control frame for TFCI power control can be established in DSCH hard split mode as the second p...

Embodiment 2

[0151] This embodiment relates to the signaling process of the TFCI power offset for all DPCCHs which issue TFCI2 according to whether the base station is in the primary or non-primary cell on the basis of SSDT signaling information during handover .

[0152] Figures 17a to 17e are block diagrams illustrating DCH soft handoff and DSCH hard handoff in relation to the DSCH according to the movement of the mobile station.

[0153] Figure 17a shows the situation before the DSCH-related DCH soft handover is performed, and Figure 17b shows the situation during the DSCH-related DCH soft handover between RNCs and before the DSCH hard handover is performed. Fig. 17c shows the situation that RNCs execute DSCH hard handover and DCH soft handover simultaneously. Figure 17d shows the situation of DSCH hard handover between RNCs, and Figure 17e shows the situation after the end of DSCH-related DCH soft handover.

[0154] Figures 18a and 18b show the conventional signaling process in the s...

Embodiment 3

[0165] This involves the signaling process of notifying the TFCI power offset of the DPCCH in the cell. This procedure transmits uplink SSDT information during handover depending on whether the cell is a primary cell or a non-primary cell.

[0166] Referring to Figures 18a and 18b, although a device supporting SSDT is used, the conventional signaling process does not use different signals to notify the TFCI power offset according to whether the base station transmitting the DSCH is the primary base station or the non-primary base station.

[0167] When using the conventional power control scheme, the TFCI power offset information is only transmitted during the radio link establishment in Figures 18a and 18b corresponding to Figures 17a and 17c. Therefore, it is impossible to set an appropriate TFCI power offset when a cell changes from a primary cell to a non-primary cell and vice versa according to a change in radio link status in a conventional process.

[0168] In the firs...

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

In a mobile communication system comprising SRNC and DRNC for controlling a plurality of base stations and a plurality of mobile stations, a method for controlling TFCI field power of a DSCH when a DCH related to the DSCH is in a soft handover state, The method includes the following steps: determining whether the base station transmitting DSCH is the main base station, determining the number of base stations transmitting TFCI2, wherein TFCI2 is information about DSCH, setting a power offset according to the determination result, and transmitting TFCI2 with the set power offset.

Description

[0001] This application is a divisional application of a patent application filed on December 19, 2001 with application number 01140003.X and title of invention entitled "Power Control Method for Transport Format Combination Identifier Field of Downlink Shared Channel". technical field [0002] The invention relates to a power control method of a mobile communication system. In particular, the present invention relates to a transport format combination identifier (TFCI) of a downlink shared channel (DSCH) based on handover between primary base stations and received transmit power control (TPC) signals from the base stations. method for power control. Background technique [0003] figure 1 The block diagram of shows soft handoff between base stations located within the same radio network controller (RNC) (intra-RNS, soft handoff between Node Bs) in a traditional wireless network. [0004] Such as figure 1 As shown, there is a serving RNC (SRNC) 106 in a Universal Mobile Te...

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 Patents(China)
IPC IPC(8): H04B7/005H04Q7/38H04B7/26H04W52/38
CPCY02D30/70H04W36/18H04W52/32H04W52/38
Inventor 金奉会权圣乐黄承勋柳悳仁卢东昱朴真荣金恩正
Owner LG ELECTRONICS INC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com