Method and device for realizing frequency resource sharing in EMBMS (Enhanced Multimedia Broadcast Multicast Service)

A technology of frequency resources and equipment, applied in electrical components, wireless communication, network planning, etc., can solve the problem of frequency resources cannot be shared, and achieve the effect of avoiding waste, increasing network capacity, and improving transmission performance

Active Publication Date: 2013-06-26
ALCATEL LUCENT SHANGHAI BELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But because frequency resources cannot be shared, for a given number of MCHs, the CommonSF-AllocPeriod in the MBSFN area cannot be further shortened

Method used

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  • Method and device for realizing frequency resource sharing in EMBMS (Enhanced Multimedia Broadcast Multicast Service)
  • Method and device for realizing frequency resource sharing in EMBMS (Enhanced Multimedia Broadcast Multicast Service)
  • Method and device for realizing frequency resource sharing in EMBMS (Enhanced Multimedia Broadcast Multicast Service)

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] image 3 A schematic diagram of a device for implementing frequency resource sharing in an EMBMS according to one aspect of the present invention is shown. Wherein, the shared device 1 includes a mapping relationship acquiring means 11 , a computing means 12 , a configuration information acquiring means 13 and a sending means 14 . Specifically, the mapping relationship obtaining means 11 acquires the mapping relationship between one or more MBSFN subframes allocated in the current MBMS service radio frame and the multicast channel; The communication capacity of the multicast channel; the configuration information acquisition means 13 acquires the frequency resource configuration information actually required by the last MBSFN subframe in each multicast channel; then, the sending means 14 sends the frequency resource configuration information to UE. ...

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Abstract

The purpose of the invention is to provide a method and device for realizing frequency resource sharing in an EMBMS (Enhanced Multimedia Broadcast Multicast Service). The method particularly comprises the steps of: obtaining mapping relationships between one or more MBSFN (Multimedia Broadcast Single Frequency Network) sub-frames allocated in a wireless frame of a current MBMS (Multimedia Broadcast Multicast Service) service and a multicast channel; calculating a communication volume of each multicast channel within a multicast channel scheduling period based on a mapping relationship; obtaining frequency resource configuration information practically needed by the last MBSFN sub-frame in each multicast channel; and sending the frequency resource configuration information to UE (User Equipment). Compared with the prior art, the method and device for realizing frequency resource sharing in the EMBMS avoid waste of the frequency resource as frequency resource sharing between different MCH (Multicast Channels) is realized through configuring the frequency resource practically needed by the last MBSFN sub-frame in the one or multiple MBSFN sub-frames allocated in the wireless frame of the MBMS service. Furthermore, the method and device for realizing frequency resource sharing in the EMBMS also can add the number of the MCH supported by 3GPP (Third Generation Partnership Project based on occupation information of PRB (Physic Resource Blocks) of the same MBSFN sub-frame of the wireless frame occupied by different MCH, and provide help for a network operator and a content provider to increase the network volume of the MCH and improve transmission performance of the real-time service.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a technology for realizing frequency resource sharing in EMBMS. Background technique [0002] Currently, EMBMS (Enhanced Multimedia Broadcast Multicast Service) is a popular service in LTE (3GPP Long Term Evolution). In order to support the transmission mode of MBSFN (Multimedia Broadcast Multicast Single Frequency Network), EMBMS defines MCH (Multicast Channel ), this channel can not only realize the broadcast coverage of the whole cell, but also support MBMS synchronous transmission among multiple cells. However, when 3GPP defines MCH, it only considers its allocation in the time domain, while the frequency domain is only statically configured in the entire network bandwidth. MBSFN requires the MCH transmission format and resource allocation method to be static. [0003] In LTE FDD (frequency division) and LTE TDD (time division), radio frames (Radio Frames) are divided i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14
Inventor 余子全兰岚刘漪
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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