WO2009135372A1 - Dispositif et procédé de configuration de sous-trame de multidiffusion - Google Patents

Dispositif et procédé de configuration de sous-trame de multidiffusion Download PDF

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Publication number
WO2009135372A1
WO2009135372A1 PCT/CN2008/073565 CN2008073565W WO2009135372A1 WO 2009135372 A1 WO2009135372 A1 WO 2009135372A1 CN 2008073565 W CN2008073565 W CN 2008073565W WO 2009135372 A1 WO2009135372 A1 WO 2009135372A1
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WO
WIPO (PCT)
Prior art keywords
multicast
over
subframe
indication information
configuration
Prior art date
Application number
PCT/CN2008/073565
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English (en)
Chinese (zh)
Inventor
王斌
苟伟
马子江
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2009135372A1 publication Critical patent/WO2009135372A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
    • H04B7/2656—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for structure of frame, burst

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a multicast subframe configuration method and apparatus in a hybrid carrier system.
  • BACKGROUND With the rapid development of the Internet and the popularization of large-screen multi-function mobile phones, a large number of mobile data multimedia services and various high-bandwidth multimedia services have emerged, for example, video conferencing, television broadcasting, video on demand, advertising, online education. , interactive games, etc., this aspect meets the rising business needs of mobile users, but also brings new business growth points for mobile operators.
  • These mobile data multimedia services require multiple users to receive the same data at the same time.
  • mobile data multimedia services Compared with general data services, mobile data multimedia services have the characteristics of large data volume, long duration, and delay sensitivity.
  • MBMS Multimedia Broadcast Multicast Service
  • 3GPP 3rd Generation Partnership Project
  • MBMS Multimedia Broadcast Multicast Service
  • MBMS defined by 3GPP can not only realize plain text low-rate message-like multicast and broadcast, but also enable high-speed multimedia service broadcast and multicast, providing a variety of rich video, audio and multimedia services. Therefore, MBMS has become the future.
  • the trend of mobile data development provides a better business prospect for the development of 3G.
  • the transmission of the MBMS service on the air interface is divided into a dedicated carrier and a shared carrier.
  • the main difference between the two transmission modes is: For the dedicated carrier mode, the carrier only carries the MBMS service; for the hybrid carrier mode, the carrier not only carries the MBMS service, but also carries the non-multimedia broadcast and multicast (non-MBMS) service (ie, Unicast service unicast service).
  • non-MBMS non-multimedia broadcast and multicast
  • ie Unicast service unicast service
  • the two types of services are multiplexed with Frequency-Division Multiplexing (FDM) and Time-Division Multiplexing (Time-Division Multiplexing). , referred to as TDM) and FDM/TDM
  • TDM is also used as a multiplexing mode of hybrid carrier MBMS service and non-MBMS service.
  • FIG. 1 is a schematic diagram of configuring a multi-wave subframe using the Two-level system according to the related art. As shown in FIG. 1 , in a modification period, the Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN) radio frames #1 to #3 are MBSFN subframes, #0, # 4. #5 and #9 subframes are reserved for transmission of non-MBMS services only.
  • MBSFN Multimedia Broadcast Multicast Service Single Frequency Network
  • the two-level method uses two levels of parameters to define the location of a specific subframe that indicates the MBMS service, as follows: (1)
  • the radio frame level uses the parameter N to discretely allocate 2 N radio frames.
  • the value of N is implemented using a 3-bit method.
  • Sub-frame configuration (micro level) is also implemented in 3-bit mode.
  • the 3-bit specific size indicates the number of consecutive sub-frames from sub-frame #1 (excluding #0).
  • the above method can be well balanced in terms of system overhead and configuration flexibility, and uses a discrete manner in the allocation of radio frames, and a centralized manner in subframe allocation, so that delay effects on unicast services can be
  • the UE power saving receiving the MBMS service forms a mutual compensation advantage; configuring the modification period to 320 ms satisfies the scheduling granularity requirement.
  • the biggest drawback of using the above methods at present is the over-allocation problem.
  • the present invention has been made in view of the problem that the two-stage multicast subframe configuration method of the related art is over-configured to cause waste of wireless resources. To this end, the present invention is directed to an improved multicast sub-frame configuration scheme for solving the above problems.
  • a multicast subframe configuration method is provided.
  • the network side sends indication information to the user equipment for indicating the number of multicast subframes that are over-configured on the network side; in the case where there is an over-configured multicast subframe Next, during the modification period, the network side releases the over-configured multicast subframe.
  • the method further includes: setting the indication information to occupy 5 bits, and setting a value of the indication information according to a configuration result of the multicast subframe.
  • the operation of releasing the over-configured multicast subframe is specifically: releasing the over-configured multicast subframe in the last one or more radio frames in the modification period.
  • the over-configured multicast sub-frames in the last one or more radio frames are released in order from back to front.
  • the operation of the network side to send the indication information to the user equipment is specifically: the network side sends the indication information in the cell by using the system broadcast message.
  • the above method further comprises: using the released multicast subframe for unicast service transmission.
  • the network side sends the first configuration information and the second configuration information, where 2 N represents the number of radio frames in the period in which the network side performs discrete allocation, where N is the first configuration information.
  • the second configuration information is used to indicate the number of consecutive subframes from subframe #1.
  • a multicast subframe configuration apparatus includes: a configuration module, configured to configure a multicast subframe; and a release module, configured to release the over-provisioned in the modification period if the configuration module over-provisions the multicast subframe a setting module, configured to set indication information indicating a number of multicast subframes that are over-configured by the configuration module, and a sending module, configured to send the indication information of the setting module to the user equipment.
  • the over-configured multicast subframe released by the release module is located in the last one or more radio frames in the tampering period, and the release module releases the last one or more radio intra-frame over-provisions in order from back to front.
  • Multicast sub-frame Preferably, the indication information set by the setting module occupies 5 bits.
  • FIG. 1 is a schematic diagram of configuring a multi-wave subframe using a two-level system according to the related art
  • FIG. 2 is a flowchart of a multicast subframe configuration method according to an embodiment of the present invention
  • FIG. FIG. 4 is a schematic structural diagram of a multicast subframe configuration apparatus according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of an LTE frame structure according to the related art
  • FIG. 6 is a schematic diagram of an LTE frame according to the related art
  • FIG. 7 is a schematic diagram of a method for configuring a multicast subframe according to Embodiment 2 of the present invention.
  • the embodiments of the present invention provide an improved hybrid carrier multi-cast subframe configuration solution.
  • a multicast subframe configuration method is provided.
  • 2 is a flowchart of a multicast subframe configuration method according to an embodiment of the present invention.
  • the multicast subframe configuration method includes the following processing (step S202 to step S204): Step S202, the network side UE Sending indication information, which is used to indicate the number of multicast subframes that are over-configured on the network side; preferably, the network side may send the indication information in the cell by using a system broadcast message; Step S204, in the case that there is an over-configured multicast subframe Next, during the tampering period, the network side releases the over-configured multicast subframe.
  • FIG. 3 is a schematic structural diagram of indication information in the method shown in FIG. 2. As shown in FIG. 3, the indication information is set to occupy 5 bits, and according to the multicast subframe. The result of the configuration result setting indication information. In addition, in step S202, the first configuration information and the second configuration information need to be simultaneously sent, where N is the value of the first configuration information, and 2 N is the wireless period in the period in which the network side performs discrete allocation.
  • the second configuration information is used to indicate the number of consecutive subframes from subframe #1, for example, 3+3bit mentioned above; that is, based on the original 3+3 bit overhead of the system, new 5 bits are added—and sent to the UE as indication information, where the indication information is as shown in Table 1.
  • 01011 N ll, indicating that 11 multicast subframes need to be released at this time.
  • 01100 N 12, indicating that 12 multicast subframes need to be released at this time.
  • 01110 N 14, indicating that 14 multicast subframes need to be released at this time.
  • 01111 N 15, indicating that 15 multicast subframes need to be released at this time.
  • 10000 N 16, indicating that 16 multicast subframes need to be released at this time.
  • step S204 the operation of releasing the over-configured multicast subframe is specifically: releasing the over-configured one of the last one or more radio frames in the modification period. Broadcast sub-frames. And preferably, the over-configured multicast sub-frames in the last one or more radio frames are released in order from the back to the front. In this way, the centralized distribution and continuity of multicast sub-frames can be guaranteed as much as possible.
  • Apparatus Embodiment According to an embodiment of the present invention, a multicast subframe configuration apparatus is provided. 4 is a structural block diagram of a multicast subframe configuration apparatus according to an embodiment of the present invention. As shown in FIG.
  • the apparatus includes: a configuration module 10, a release module 20, a setting module 30, and a sending module 40.
  • the configuration module 10 is configured to configure a multicast subframe.
  • the release module 20 is connected to the configuration module 10, and is configured to release the over-configured multicast subframe in the modification period if the configuration module over-provisions the multicast subframe.
  • the setting module 30 is connected to the configuration module 10, and configured to set indication information indicating the number of multicast subframes configured by the configuration module. Preferably, the indication information occupies 5 bits; and the sending module 40 is connected to the setting module. 30, used to send instructions for setting the module settings to
  • the over-configured multicast subframe released by the release module 20 is located in the last one or more radio frames in the modification period, and the release module 20 releases the last one or more radio intraframes in a backward-to-front order.
  • Configured multicast subframes With the foregoing apparatus provided by the embodiment of the present invention, an over-configured multicast frame can be no longer allocated to the multicast service, thereby saving radio resources.
  • FIG. 5 is a schematic diagram of an LTE frame structure according to the related art.
  • the radio frame structure of the LTE type 1 is as shown in FIG. 5, and the frame structure of the type 1 is applicable to FDD.
  • one radio frame is composed of 10 subframes, and each subframe has a length of 1 ms.
  • the number of sub-frames is from #0 to #9, where subframes #0, #4, #5, and #9 do not carry MB MS services, and only carry non-MBMS services, thus remaining in each radio frame.
  • the next 6 subframes can be used to carry the MBMS service.
  • the tampering period in the embodiment is set to 320 ms, that is, every 32 radio frames or 320 subframes is a tampering period.
  • FIG. 6 is a schematic diagram of a multicast subframe configuration method according to Embodiment 1 of the present invention. As shown in FIG. 6, in the tampering period, the last two multicast subframes in the #28 radio frame are released. In this way, the system configuration fully meets the MBMS traffic requirements, and there is no problem of over-provisioning.
  • the number of multicast subframes to be configured in the modification period of the network side is 129.
  • FIG. 7 is a schematic diagram of a multicast subframe configuration method according to Embodiment 2 of the present invention. As shown in FIG. 7, during the ⁇ ⁇ tampering period, all five subframes in the #26 ⁇ #31 radio frame are released.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention.
  • the present invention can be variously modified and modified. Any modifications, equivalent substitutions, improvements, etc. made therein are intended to be included within the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un dispositif et un procédé de configuration de sous-trame de multidiffusion. Dans le procédé, le côté réseau envoie à l’équipement utilisateur une information d’indication qui sert à indiquer le nombre de sous-trames de multidiffusion configurées en excédent dans le côté réseau (S202); si les sous-trames de multidiffusion configurées en excédent sont présentes, dans la période de modification, le côté réseau libère les sous-trames de multidiffusion configurées en excédent (S204). Le rapport d’utilisation des ressources sans fil sera augmenté grâce à l’utilisation du procédé et du dispositif.
PCT/CN2008/073565 2008-05-07 2008-12-17 Dispositif et procédé de configuration de sous-trame de multidiffusion WO2009135372A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200810096916.6 2008-05-07
CNA2008100969166A CN101577578A (zh) 2008-05-07 2008-05-07 多播子帧配置方法及装置

Publications (1)

Publication Number Publication Date
WO2009135372A1 true WO2009135372A1 (fr) 2009-11-12

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1656844A (zh) * 2002-05-28 2005-08-17 诺基亚有限公司 用于多媒体广播/多播业务的数据传输
CN1791260A (zh) * 2004-12-13 2006-06-21 上海贝尔阿尔卡特股份有限公司 传输多媒体广播/多播业务告知指示的方法和设备
WO2007036116A1 (fr) * 2005-09-29 2007-04-05 Huawei Technologies Co., Ltd. Procede et systeme de voie de service de diffusion multiple et de voie de service de diffusion individuelle
US20080037460A1 (en) * 2006-08-14 2008-02-14 Muthaiah Venkatachalam Broadband wireless access network and method for providing multicast broadcast services within multicast broadcast service zones

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1656844A (zh) * 2002-05-28 2005-08-17 诺基亚有限公司 用于多媒体广播/多播业务的数据传输
CN1791260A (zh) * 2004-12-13 2006-06-21 上海贝尔阿尔卡特股份有限公司 传输多媒体广播/多播业务告知指示的方法和设备
WO2007036116A1 (fr) * 2005-09-29 2007-04-05 Huawei Technologies Co., Ltd. Procede et systeme de voie de service de diffusion multiple et de voie de service de diffusion individuelle
US20080037460A1 (en) * 2006-08-14 2008-02-14 Muthaiah Venkatachalam Broadband wireless access network and method for providing multicast broadcast services within multicast broadcast service zones

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