Select diversity for radio communications

A technology of radio equipment and radio access, applied in the directions of wireless communication, location diversity, communication between multiple stations, etc., can solve the problem that the anchor node does not support the acknowledgement (AM) node packet communication, and does not allow independent modulation and coding. Adaptation and other issues, to achieve an effective and reliable cell change process, easy to use independently

Inactive Publication Date: 2012-04-25
TELEFON AB LM ERICSSON (PUBL)
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, soft handover does not allow independent adaptation of modulation and coding in each cell, since in soft handover communication the coding and modulation schemes must be the same from all transmitters
[0009] Another issue of concern is that the user platform system in the long-term evolution of 3GPP UTRAN is developing towards a simplified network system, where the user platform anchor node (Anchor Node, AN) or access gateway (AGW) of the RNC in UTRAN only performs limited Function
But the result of such a functional change is that Acknowledgment (AM) node packet communication is not supported in anchor nodes

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
  • Select diversity for radio communications
  • Select diversity for radio communications
  • Select diversity for radio communications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The following description presents specific details, such as particular embodiments, procedures, techniques, etc., for purposes of explanation and not limitation. It will be appreciated by those skilled in the art, however, that other embodiments may be employed without these specific details. For example, while the following description is aided with a non-limiting example application to handover in a cellular communication network, the technique can be used in any wireless network and in any situation where selection diversity needs to be used. In some instances, detailed descriptions of well-known methods, interfaces, circuits, and devices are omitted so as not to obscure the description with unnecessary detail. Additionally, individual modules are shown in some of the figures. Those skilled in the art will appreciate that separate hardware circuits, software programs and data may be used in conjunction with an appropriately programmed digital microprocessor or gene...

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

Select diversity in cellular radio communications involving both the radio access network and the mobile radio ensures that an optimal base station cell under a current condition is selected for communicating with the mobile radio. A candidate set of radio base station cells is defined for a radio connection between the radio network and the mobile radio. Packets are sent via the radio network toeach of multiple radio base stations having a cell in the candidate set. The mobile radio detects a current quality of communication for the radio connection, and based on that detected quality, the candidate cell set may change. The mobile radio selects one of the cells in the candidate cell set to send a next or specific data packet based on one or more selection criteria.

Description

technical field [0001] The technical field relates to cellular radio communications, and in particular to Select Diversity in cellular radio communications. Background technique [0002] Handover is an important feature in all modern cellular systems where an established communication link or connection with a mobile radio is transferred from one cell (i.e. geographical coverage area) to another cell to accommodate movement of the mobile radio and / or changing radio conditions. A radio base station is associated with each cell, and a plurality of radio base stations may be controlled by a radio network controller (RNC) or a base station controller (BSC). When new radio access technologies are developed, for example in long-term evolution LTE, like 3GPP, it is necessary to define efficient handover mechanisms for Provides lossless, seamless and fast switching to and from mobile devices. [0003] High-speed downlink packet access (High-Speed ​​Downlink Packet Access HSDPA) i...

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): H04W36/00H04W48/20H04B7/26H04B7/02H04W36/18
CPCH04W48/20H04B7/022H04L1/0003H04L1/0009H04L1/1867H04W36/18
Inventor M·萨格福斯J·托尔斯纳S·查克拉博尔蒂
Owner TELEFON AB LM ERICSSON (PUBL)
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