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Handover method and customer equipment

A technology for handover, user equipment, applied in the direction of communication between multiple stations, electrical components, radio/induction link selection arrangement, etc., can solve the problem of not supporting MBMS transmission merger and so on

Active Publication Date: 2009-02-18
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In contrast, single-cell transmission is characterized by the transmission of MBMS services only within the coverage of a specific cell and does not support the combination of MBMS transmissions from multiple cells

Method used

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  • Handover method and customer equipment

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Experimental program
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no. 1 approach

[0024] figure 1 It is a schematic diagram illustrating the network environment to which the method and device according to the first embodiment of the present invention are applied.

[0025] Such as figure 1 As shown, according to the first embodiment of the present invention, the MBMS service and the unicast service are multiplexed on the same carrier. In other words, both MBMS services and unicast services are transmitted on the carrier.

[0026] Generally, the cells that broadcast the same MBMS service form the MBSFN, where a certain service for the user is simultaneously transmitted in each cell in the MBSFN. Therefore, in MBSFN, the physical superposition of signals of the same service enables the user equipment 10 to receive signals in the MBSFN area without any switching.

[0027] Such as figure 1 As shown, in the outer layer of the MBSFN area, in order to prevent interference from transmitted signals from cells in other non-MBSFN areas, there is a circle of reserved ce...

no. 2 approach

[0040] The first embodiment described above is aimed at the case where the MBMS service and the unicast service are multiplexed on the same carrier. However, the MBMS service can have a dedicated carrier, that is, the MBMS service is transmitted on the dedicated carrier, and the unicast service or other services (such as MBMS single cell transmission) are multiplexed on another carrier.

[0041] Figure 5 It is a schematic diagram illustrating the network environment to which the method and device according to the second embodiment of the present invention are applied. Such as Figure 5 As shown, since the MBMS service in the MBSFN area is transmitted using a dedicated carrier, and other services are transmitted using another carrier, this constitutes a layered network structure. Such as Figure 5 As shown, a cell in the MBSFN area uses a dedicated carrier to transmit a certain MBMS service, such as a mobile TV program. At the same time, the mobile TV program can also be transmit...

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Abstract

A method and related user device for executing handover between a multimedia broadcast multicast single frequency network (MBSFN) and non-MBSFN regions of a communication network are disclosed. The communication network includes a first community forming the MBSFN region, a second community not forming the MBSFN region and a keeping community between the first and second communities. The keeping community belongs to the MBSFN region, wherein the broadcast keeping community in the keeping community indicates information. The method includes steps as follows: receiving the indicating information of the keeping community so as to learn that the user device in the keeping community; measuring a first signal intensity transmitted based on MBSFN and aiming to a pre-determined business in the keeping community and a second signal intensity transmitted based on a single community; and selecting the first community or the second community as the target community when the difference between the first and second signal intensities is less than a pre-determined threshold value. This invention is capable of providing continuous MBMS service for user under the condition that the user device moves in different communication regions.

Description

Technical field [0001] The present invention relates to handover of user equipment between different communication areas, and in particular to a method for performing handover between MBSFN and non-MBSFN areas, and corresponding user equipment, when the user equipment is in different communication areas. In the case of inter-movement, it can provide users with continuous MBMS services. Background technique [0002] 3GPP launched the 3G Long Term Evolution research project (Long TermEvolution) in 2005 to provide evolving access technologies, such as E-UTRA, and evolving access networks, such as E-UTRAN, to the ever-increasing needs of operators and users. Better support. In LTE, it is clearly proposed that the evolved MBMS service (E-MBMS) should be supported. MBMS is a service introduced in the 3GPP Re1.6 version. It refers to a point-to-multipoint wireless communication service in which a data source sends data to multiple users, so as to realize the evolution of network resourc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04B7/26
CPCH04W72/005H04W36/30H04W36/08H04W36/0007H04W72/30H04W36/302
Inventor 汪勇刚
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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