Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Group service transmission method and apparatus based on PRACH (physical random access channel)

A technology of group business and transmission method, applied in broadcast service distribution, error prevention/detection using return channel, electrical components, etc., can solve problems such as waste of resources, and achieve the effect of improving accuracy

Active Publication Date: 2016-12-07
CHENGDU TD TECH LTD
View PDF2 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the group service provided by the trunking communication is different from the MBMS service. If a group service that only exists in a few cells in the MBSFN area is sent in the entire MBSFN area, it will waste resources

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
  • Group service transmission method and apparatus based on PRACH (physical random access channel)
  • Group service transmission method and apparatus based on PRACH (physical random access channel)
  • Group service transmission method and apparatus based on PRACH (physical random access channel)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0056] figure 1 It is a flow chart of Embodiment 1 of the PRACH-based group service transmission method of the present invention, as shown in figure 1 As shown, the method of this embodiment may include:

[0057] S100. The base station pre-configures PRACH resources. The PRACH resources include: N groups of PRACHs and the corresponding relationship between each PRACH in each PRACH group and...

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 provides a group service transmission method and apparatus based on a PRACH (physical random access channel). The method comprises the following steps: a base station configures PRACH resources in advance, wherein the PRACH resources comprise N groups of PRACHs and corresponding relations between each PRACH in each PRACH group with a CQI grade; and the base station sends a notification message to group UE in a group so that the group UE can feed NACK information to the base station through the PRACH resources, the base station, when it is detected that the UE feeds the NACK information back, obtains a CQI expected by the UE feeding back the NACK information through a CQI grade corresponding to the PRACH of the detected feedback NACK information, and the base station, according to the obtained CQI expected by at least one piece of UE, performs retransmission scheduling and adjusts the MCS of primary transmission of the next time, wherein the notification message comprises a group RNTI, carried configuration information and the PRACH resources. The group service transmission method and apparatus based on the PRACH, provided by the invention, can improve the accuracy of group service transmission and can also decentralize interference caused to a local cell and adjacent cells.

Description

technical field [0001] The present invention relates to the technical field of cluster communication, in particular to a PRACH-based group service transmission method and device. Background technique [0002] With the rapid development of trunking communication, it has become a general trend to support trunking communication in a long term evolution (Long Term Evolution, hereinafter referred to as: LTE) public network system. A basic service in trunking communication is a group call, and there are multiple user equipments (User Equipment, hereinafter referred to as UE) in a group. In the current LTE public network system, the multimedia broadcast multicast service (Multimedia Broadcast Multicast Service, hereinafter referred to as: MBMS) is sent in the following manner: in a multicast / multicast single frequency network (Multimedia Broadcast Multicast Service Single Frequency Network, hereinafter referred to as : MBMS Traffic Channel (MBMS Traffic Channel, referred to as: MT...

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
IPC IPC(8): H04W4/08H04W72/08H04W74/08H04L1/16H04L1/18H04W72/54
Inventor 魏立梅陈迎杨小倩袁乃华徐绍君
Owner CHENGDU TD TECH LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com