A single-frequency and method for broadcast information transmission

A technology for broadcasting information and single-frequency networks, which is applied in broadcasting transmission systems, broadcasting service distribution, and devices for branch offices to provide special services. It can solve problems such as the performance degradation of UE receiving signals, and achieve the effects of expanding range and improving performance.

Inactive Publication Date: 2008-06-04
CHINA ACAD OF TELECOMM TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0009] The present invention provides a single frequency network and its method of sending broadcast information, which is used to solve the problem that UE receiving signal performance is obvious at the sector edge of the same base station in the existing SFN Lowering the problem

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  • A single-frequency and method for broadcast information transmission
  • A single-frequency and method for broadcast information transmission
  • A single-frequency and method for broadcast information transmission

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Embodiment Construction

[0034] Aiming at the problem that the UE receiving signal performance is significantly reduced at the sector edge of the same base station in the existing SFN, the present invention divides the sectors of the same base station into different groups by grouping the sectors in the SFN, and provides UEs in a sector send the same scrambling code and channel estimation code, and send different scrambling codes and channel estimation codes to UEs in different groups of sectors, thus solving the above problem.

[0035] figure 2 It is a schematic diagram of the composition of the system of the present invention. Such as figure 2 As shown, the system of the present invention includes: more than one base station 10 and UE 20 .

[0036] The base station 10 is wirelessly connected to the UE 20, and is used to send a signal including the channel estimation code and the broadcast information scrambled by using the scrambling code to the coverage area of ​​each sector included in the bas...

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Abstract

The invention discloses a method for sending the broadcast information in a single frequency network, which characterized in that the method comprises the steps that: A. the sectors of the single frequency network are set in groups and the sectors of the same base station are specified in different groups; B. the scrambling codes and the channel estimation codes which are different from each other are allocated for various groups of sectors; and C. the various sectors send the signal containing the channel estimation codes and the broadcast information after going through the scrambling processing adopting the scrambling codes into the coverage area. The problem that the performance of receiving the signal by UE at the sector margin of the same base station in the single frequency network is obviously lowered is solved by the invention. The invention simultaneously discloses a single frequency network.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a single frequency network and a method for sending broadcast information. Background technique [0002] With the rapid development of mobile communications and interconnection networks, a large number of mobile multimedia services have emerged, some of which require multiple user equipment (UE) to receive the same data at the same time, such as video on demand, TV broadcasting, video conferencing, online Educational, interactive games, etc. Compared with general data, these mobile multimedia services have the characteristics of large data volume and long duration. In order to effectively utilize mobile network resources, the Global Organization for Standardization (3GPP) proposed a broadcast and multicast service (MBMS: Multimedia Broadcast / Multicast Service). MBMS refers to a point-to-multipoint service in which one data source sends data to multiple UEs, thus Re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04B1/707H04B7/08H04Q7/36H04L12/18H04H20/67H04B1/7115H04B7/04H04H3/00H04W4/06H04W72/04
Inventor 丁昱王映民杨家军毕海毛磊杨君云
Owner CHINA ACAD OF TELECOMM TECH
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