WO2009009946A1 - Procédé pour réaliser un service de diffusion/multidiffusion multimédia amélioré dans une cellule multiporteuse - Google Patents

Procédé pour réaliser un service de diffusion/multidiffusion multimédia amélioré dans une cellule multiporteuse Download PDF

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Publication number
WO2009009946A1
WO2009009946A1 PCT/CN2008/000358 CN2008000358W WO2009009946A1 WO 2009009946 A1 WO2009009946 A1 WO 2009009946A1 CN 2008000358 W CN2008000358 W CN 2008000358W WO 2009009946 A1 WO2009009946 A1 WO 2009009946A1
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WO
WIPO (PCT)
Prior art keywords
mbms
cell
mbsfn
time slot
carrier
Prior art date
Application number
PCT/CN2008/000358
Other languages
English (en)
Chinese (zh)
Inventor
Zijiang Ma
Min Fang
Bin Wang
Original Assignee
Zte Corporation
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
Publication date
Priority claimed from CN2007101304131A external-priority patent/CN101262635B/zh
Application filed by Zte Corporation filed Critical Zte Corporation
Publication of WO2009009946A1 publication Critical patent/WO2009009946A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services

Definitions

  • the present invention relates to the field of wireless communications, and more particularly to implementing enhanced multimedia broadcast and multicast in a multi-frequency point cell in a Time Division Code Synchronization Division Multiple Access (TD-SCDMA) system.
  • TD-SCDMA Time Division Code Synchronization Division Multiple Access
  • MBMS Multimedia Broadcast Multicast Service
  • MBMS Multimedia Broadcast Multicast Service
  • MBS Multimedia Broadcast Multicast Service
  • MBMS services include: Multicast Service and Broadcast Service.
  • Each multicast service requires a joining process.
  • the user terminal (UE) needs to activate a multicast service to the BM-SC (Broadcast-Multicast Service Centre), and for each broadcast service, The UE only needs local activation.
  • the multicast service can adopt the bearer type of PTM (point-to-multipoint, but also abbreviated PTM or ptm) and PTP (point-to-point, also abbreviated PTP or ptp), and the broadcast service can only be used.
  • PTM point-to-multipoint
  • PTP point-to-point
  • the MBSFN (MBMS Single Frequency Network) technology is an enhanced MBMS technology.
  • MBSFN mode the UE can come from Signals from different base stations are considered multipath signals, and MBSFN greatly improves spectrum utilization.
  • the MBMS service mode is characterized by services in many scenarios. There is no terminal uplink feedback signal in progress, and the smart antenna is no longer suitable for the MBMS service mode. Therefore, the MBSFN technology is very beneficial for improving the gain and reducing interference of the MBMS service in the TD-SCDMA system.
  • the base stations of each cell transmit the same MBMS data content with the same frequency, the same scrambling code, and the same midamble (intermediate code) code, so that the UE can receive the same content from multiple cells as received.
  • the gain of the UE receiving the MBMS service can be improved.
  • the MBMS service is only carried in the P-T-M mode.
  • the downlink time slots including MCCH (MBMS Control Channel), MICH (MBMS Indicator Channel) or MTCH (MBMS Traffic Channel) are Non-MBSFN time slots, in Non-MBSFN time slots.
  • the base station of each cell does not require the same frequency, the same scrambling code, and the same midamble code to transmit the same MBMS data content, so the MBMS service content received by the UE on the Non-MBMS time slot does not obtain additional gain.
  • MBMS services such as: mobile TV, when the TV channels of each cell are the same, they can be sent on the MBSFN time slot, so that each cell sends the same TV channel on the MBSFN time slot, and the UE receives the TV channel.
  • Good gain can be obtained for the signal; for the MCCH channel and MICH of the MBMS, and some MBMS services (such as information specific to each cell, cell service information, etc.) carried on the MTCH, due to the MCCH of each cell, The contents of the MICH and part of the MTCH (the program specific to the cell) are different.
  • These MBSM channels are transmitted on the Non-MBSFN time slot, and the UE cannot obtain the gain when receiving these channels.
  • the enhanced MBMS technology is introduced, that is, the downlink time slot of one radio frame is divided into MBSFN time slot and Non-MBSFN time slot, which can improve the gain of the UE receiving the MBMS service.
  • the TD-SCDMA system in the 3GPP protocol is a single carrier system, that is, one cell corresponds to one carrier, and the spectrum width of a single carrier is 1.6M.
  • TD-SCDMA uses a relatively narrowband TDD (Time Division Duplex) mode, on a single carrier.
  • the theoretical peak rate is 2.8 Mbps, and some technical improvements are made at the base of a single carrier cell, namely:
  • N is per The number of carriers in each cell
  • the MBMS service needs to occupy a large amount of spectrum resources.
  • the MBMS is carried in a single-frequency cell, that is, a single-carrier cell, it will inevitably affect the normal operation of the normal service.
  • the MBMS service is carried in a multi-frequency cell,
  • the carrier cell because the spectrum resources of the cell are relatively rich, will not affect the normal service.
  • the power of the broadcast channel (BCH) including the cell can be covered.
  • the BCH is carried on TS0 (fixed downlink time slot) of the primary carrier, and the other carriers of TS0 have no transmission power, that is, the total transmission power of each carrier of TS0 is concentrated on the primary carrier.
  • the technical solution adopted by the invention is:
  • a method for implementing an enhanced MBMS service in a multi-carrier cell includes:
  • the downlink time slot is divided into an MBSFN time slot and a Non-MBSFN time slot; the same part of the MBMS service of each cell is configured to the MBSFN time slot; and the part of the MBMS service unique to each cell is configured to On the Non-MBSFN time slot;
  • the user terminal receives the MBMS service.
  • step a
  • step a
  • Only one MBMS control channel and one MBMS indication channel are configured in each multi-carrier cell, and one or more MBMS service channels are configured.
  • step a
  • the MBMS control channel, the MBMS indicator channel, and the part of the MBMS service unique to the cell The channel is configured on a primary carrier of one or more Non-MBSFN slots;
  • the same part of the MBMS traffic channel of each cell is configured to one or more MBSFN time slots of the primary carrier or a certain secondary carrier; the same MBMS traffic channel allocated by each cell to the MBSFN time slot should be the same carrier as other cells.
  • step a
  • the transmit power of all carriers of the one or more Non-MBSFN slots is concentrated to transmit on the primary carrier
  • the transmit power of all carriers of the one or more MBSFN slots is concentrated on one carrier for transmission.
  • the radio network controller sends the configured MBSFN time slot, the Non-MBSFN time slot, and the MBMS channel information to the user terminal in the entire multi-carrier cell by using the system broadcast message.
  • the radio network controller configures a new information unit in the system broadcast message, notifying the user terminal that one or more MBSFN slots are configured in the downlink time slot of the cell; and notifying the user terminal of the MBSFN Which downlink time slot is the slot, on which carrier the MBMS service is carried, and the current cell parameter identifier.
  • the radio network controller sends the configured MBSFN time slot, the Non-MBSFN time slot, and the MBMS channel information to the user terminal in the entire multi-carrier cell by using a higher layer command.
  • the radio network controller passes the radio resource control message or
  • the control information carried on the MBMS control channel informs the user terminal whether the MBSFN time slot is configured in the local cell, and which downlink time slot these MBSFN time slots are, on which carrier the MBMS service and the current cell parameter identifier are carried.
  • step c is specifically:
  • the user terminal is configured according to the MBMS control channel and/or the MBMS indication channel configuration information.
  • the primary carrier of the Non-MBSFN time slot receives the MBMS control channel and/or the MBMS indication channel; when the user terminal wants to receive the MBMS service carried on the MBSFN time slot, the information of the MBMS service channel is read according to the configuration information, and Path merge improves receiver gain; when the user When the terminal receives the MBMS service carried on the Non-MBSFN time slot, it receives the information of the MBMS service channel on the primary carrier.
  • the method of the technical solution of the present invention fully combines the characteristics of the single-frequency network and the multi-carrier cell, classifies the service according to the characteristics of the multimedia broadcast multicast service, and allocates the MBSFN time slot for each multi-carrier cell common service, and each On the multi-carrier cell-specific service Non-MBSFN time slot, the terminal 4 performs service reception from the corresponding time slot according to the corresponding configuration information.
  • the single-frequency time slot is utilized for the common service, and each cell uses the same frequency, the same scrambling code, and the same midamble (intermediate code) code to transmit the same MBMS data content, so that the UE can receive multiple received data.
  • the same content of the cell is regarded as the multipath of one cell, which can improve the gain of the UE receiving the common MBMS service.
  • other personalized services are carried on multiple carrier frequencies, and the spectrum resources of the cells are relatively rich, which does not affect ordinary services.
  • the transmit power of all carriers of one or more Non-MBSFN slots is also concentrated to transmit on the primary carrier; the transmit powers of all carriers of one or more MBSFN slots are concentrated to one carrier for transmission.
  • the MBMS service of the same part for each cell can improve the receiving gain of the user terminal by multipath combining.
  • FIG. 1 is a schematic diagram of an MBMS enhancement technique in the prior art
  • FIG. 2 is a flowchart of a method for implementing an enhanced MBMS service in a multi-carrier cell according to the present invention
  • FIG. 3 is a specific implementation diagram of a method for implementing an enhanced MBMS service in a multi-carrier cell according to the present invention
  • FIG. 4 is a schematic diagram of another specific implementation of a method for implementing an enhanced MBMS service in a multi-carrier cell according to the present invention.
  • the present invention is to explain how to carry the enhanced MBMS technology in a multi-frequency cell, that is, how to implement the function of enhancing the MBMS technology in the multi-frequency cell of the TD-SCDMA system.
  • the invention realizes an enhanced MBMS service in a multi-frequency point cell based on the existing multi-frequency point labeling, such as: a mobile TV service (an MBMS service, characterized in that multiple cells send the same TV) Channel).
  • a mobile TV service an MBMS service, characterized in that multiple cells send the same TV
  • FIG. 2 first, since the TD-SCDMA system can perform time division multiplexing on one carrier, the downlink time slot carrying the MBMS service channel can be further divided into MBSFN time slots and Non-MBSFN time slots; UTRAN
  • the MBSFN time slot is configured in (Node B) so that the mobile TV service can be carried on the MBSFN time slot; then, the RNC (Radio Resource Controller) configures the MBSFN time slot and the MBMS related channel through broadcast messages or higher layer signaling.
  • the parameter is sent to the cell, so that the UE (user equipment) in the cell can receive the configuration information of the UTRAN.
  • the control channel for the MBMS and the bearer method of the traffic channel can also be used. Similar to the bearer method of the BCH, all the power of all carriers on the time slot carrying the MBMS channel is concentrated on one carrier for transmission.
  • UEs interested in mobile TV or other MBMS services can receive MBMS services (including mobile TV services) on these MBSFN time slots and Non-MBSFN time slots.
  • FIG. 3 is a schematic diagram of implementing an enhanced MBMS technology by using time division multiplexing in an N-frequency cell.
  • the downlink time slot carrying the MBMS service channel is further divided into an MBSFN time slot and a Non-MBSFN time slot; then, in the Node B of the UTRAN, the MBSFN time slot and the Non-MBSFN time slot are configured. And configure the control channel, indicator channel and traffic channel of the MBMS.
  • a multi-frequency cell has multiple frequency points, one primary frequency point and multiple secondary frequency points. Assume that the number of multi-frequency points N-3 includes one primary carrier and two secondary carriers.
  • the broadcast channel (BCH) of the cell is carried on TS0 of the primary carrier.
  • MCCH MBMS Control Channel
  • MICH Intelligent Channel of MBMS
  • One or more MTCHs may be configured in each N-frequency cell, and some MTCHs are configured on the Non-MBSFN time slots, and some MTCHs are configured on the MBSFN time slots.
  • MCCH> MICH and part of MTCH special MBMS services of this part of MTCH bearer cell, such as hotels, restaurants, shopping centers related to this cell
  • MCCH special MBMS services of this part of MTCH bearer cell, such as hotels, restaurants, shopping centers related to this cell
  • the content of the MCCH and the MICH of each cell are different, so it can only be configured on the Non-MBSFN time slot.
  • a part of the MTCH of a cell carries the MBMS service specific to the cell. These MTCHs can only be configured in the Non-MBSFN time slot. on.
  • the MBMS channel configured to the Non-MBSFN slot must be configured on the primary carrier of these slots, because in the N-frequency cell of the TD-SCDMA system, before the UE is selected, the UE first selects the dedicated channel. Residing on the primary carrier, the UE can listen to the system broadcast cell on the primary carrier, respond to the paging, initiate a random access procedure, etc., and the MBMS channel configured in the Non-MBSFN time slot does not need to perform macro diversity with the neighboring cell. The same frequency point as the MBMS channel of the neighboring cell is not required.
  • the power of all carriers of the Non-MBSFN time slot is concentrated on the primary carrier for transmission, in order to ensure that the signal power of the MCCH and the MICH and the MTCH can cover the entire multi-frequency point cell, and the configuration methods of these logical channels are also adopted and broadcasted.
  • a channel-like configuration method that is, all the power of the time slot transmitted on the primary carrier, and no transmission power on the secondary carrier.
  • the Non-MBSFN time slot in which the MCCH, MICH, or MTCH is configured may also be a TS0 time slot.
  • MBMS information and broadcast messages are respectively transmitted at different time intervals (TS0 time slots of different radio frames).
  • Part of the MTCH (the part of the MTCH carrying the same MBMS service of each cell) is configured on one or more MBSFN time slots, and can be configured on the primary carrier or a certain secondary carrier of the time slot or the time slots, and the time period is The transmit power of all carriers of the slot is concentrated on this carrier, and there is no transmit power on all other carriers (if transmitting on a certain secondary carrier of MBSFN, the secondary carrier concentrates the total power of all carriers in the slot) , and other carriers, including the main Carrier, no transmit power in this time slot).
  • the MBMS channel configured to the MBSFN slot should be at the same frequency as other cells.
  • the MBMS service of the cell is the same as the MBMS service of the neighboring cell, that is to say, these MBMS services are the same in multiple cells, such as mobile TV channels. These same MBMS services are configured on the MBSFN time slot, as shown in FIG.
  • Cell which is a method for configuring a mobile TV channel in multiple cells and improving the receiving gain of the UE through enhanced MBMS technology, such as: Cell (cell A, cell B, cell C, cell A has carrier frequency fl, f2, ⁇ ; cell has carrier frequency ⁇ , f3, f4; cell C has carrier frequency ⁇ , f4, f5, where the first frequency The point is the primary frequency point, and the other is the secondary frequency point; the MBSFN time slot of cell A is TS3, TS4, the MBSFN time slot of cell B is TS4, and the MBSFN time slot of cell C is TS4, TS5), all have the same
  • the mobile TV channel is configured on the time slot 4 of the carrier frequency ⁇ of the cell A ( ⁇ , TS4), and is arranged on the time slot 4 of the carrier frequency ⁇ of the cell ( ⁇ , TS4), It is also arranged on the time slot 4 of the carrier frequency ⁇ of the cell C ( ⁇ , TS4 ).
  • the UEs that are interested in the TV channel residing in the cell ⁇ , or ⁇ or C can obtain the MBMS signals of the three cells, like the three multipaths of one radio signal, and obtain the gain through macro diversity. Get better quality of mobile TV reception.
  • Step 2 Send configuration information to the UE in the multi-carrier cell.
  • the RNC of the UTRAN sends configuration information such as configured MBSFN time slot, Non-MBSFN time slot, and MBMS channel information through system broadcast messages or other high layer signaling.
  • configuration information such as configured MBSFN time slot, Non-MBSFN time slot, and MBMS channel information through system broadcast messages or other high layer signaling.
  • a new information element is configured to notify the UE that the cell supports the MBSFN mode, that is, one or more of the downlink time slots of the cell are configured. MBSFN time slot.
  • SIB3 System Broadcast Message 3
  • a new information element is configured to notify the UE which time slots of the cell are MBSFN time slots, and each MBSFN time slot.
  • a slot number that is, indicating which downlink slot is the MBSFN
  • frequency point information that is, on which carrier the MBMS service is carried
  • a cell parameter identifier (a cell parameter identifier corresponding to a cell parameter identifier) (middle) code, four scrambling codes).
  • the RNC (Radio Network Controller) of the UTRAN may also notify the UE by using high layer signaling, such as RRC (Radio Resource Control) message, or control information carried on the MCCH, whether the cell is configured with MBSFN time slots, and these MBSFNs.
  • RRC Radio Resource Control
  • the information related to the time slot that is, the time slot number described above.
  • the RNC of the UTRAN configures the relevant channels of the MBMS, it needs to indicate which time slot or channels in which these channels are configured, and does not need to indicate at which frequency point (carrier) these channels are configured, because when these channels are configured in the Non-MBSFN time slot.
  • the frequency is inevitably the primary frequency point, when these channels are configured in the MBSFN time slot, the frequency point is determined by the MBSFN time slot configured in the front.
  • UEs interested in mobile TV or other MBMS services in the cell may receive MBMS services (including mobile TV services) on the MBSFN time slots and Non-MBSFN time slots configured in the configuration information.
  • the UE can know the configuration information of the MCCH and/or the MICH by receiving a system broadcast message or other RRC message;
  • the MCCH and/or MICH channel can be received;
  • the UE also determines where to receive the MBMS service of interest through the MTCH information configured on the MCCH; if the UE is interested in a certain/some MBMS service (eg, mobile TV), and this/these services are carried in the MBSFN On the time slot, the UE reads the MTCH information according to the known cell parameter ID and the frequency point (which may be the primary carrier or a certain secondary carrier), and can improve the receiving gain through multipath combining; / These services are carried on the Non-MBSFN time slot, then the UE will receive the MTCH information on the primary carrier.
  • the invention may be embodied in various other forms without departing from the spirit and scope of the invention. Industrial applicability
  • the method for realizing enhanced multimedia broadcast and multicast service, ie MBMS, in a multi-frequency point cell is applicable to the field of wireless communication, in particular to time division synchronous code division multiple access
  • the MBMS services are classified according to the service characteristics, and the common services of the cells are carried on the single-frequency time slots, and the personalized services of the other cells are carried on the non-single-frequency time slots.
  • the multipath combining can be used to enhance the service gain on the single frequency time slot, and the normal service reception of the multi-carrier cell can be considered.
  • the technical solution of the present invention expands the implementation manner of the MBMS service, especially the enhanced MBMS service in the multi-carrier cell, which will greatly improve the application capability of the MBMS service.

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

Abstract

L'invention concerne un procédé pour réaliser un service de diffusion/multidiffusion multimédia (MBMS) amélioré dans une cellule multiporteuse, qui comprend les opérations suivantes : l'intervalle de temps en voie descendante est divisé en un intervalle de temps MBSFN et un intervalle de temps non MBSFN dans une cellule multiporteuse ; la même partie du service MBMS dans chaque cellule est configurée sur l'intervalle de temps MBSFN, la partie particulière du service MBMS dans chaque cellule est configurée sur l'intervalle de temps non-MBSFN ; les informations de configuration sont envoyées aux équipements utilisateurs dans la cellule multiporteuse totale, les équipements utilisateurs reçoivent le service MBMS conformément aux informations de configuration.
PCT/CN2008/000358 2007-07-18 2008-02-18 Procédé pour réaliser un service de diffusion/multidiffusion multimédia amélioré dans une cellule multiporteuse WO2009009946A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2007101304131A CN101262635B (zh) 2007-03-09 2007-07-18 一种在多载波小区实现增强mbms业务的方法
CN200710130413.1 2007-07-18

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WO2009009946A1 true WO2009009946A1 (fr) 2009-01-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102396290A (zh) * 2009-04-16 2012-03-28 华为技术有限公司 一种实现多媒体广播组播业务的移动性管理方法、设备和系统
WO2014040296A1 (fr) * 2012-09-17 2014-03-20 华为技术有限公司 Procédé de retour d'informations de sous-trame de liaison descendante, station de base et équipement d'utilisateur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1788437A (zh) * 2003-05-14 2006-06-14 三星电子株式会社 用于发送/接收支持多媒体广播/组播服务的控制信息的装置和方法
CN1906887A (zh) * 2004-03-15 2007-01-31 三星电子株式会社 多媒体广播/组播业务系统中最大化接收信号增益的方法
CN101159902A (zh) * 2007-10-26 2008-04-09 中兴通讯股份有限公司 一种多媒体广播组播系统专用载波小区的时隙配置方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1788437A (zh) * 2003-05-14 2006-06-14 三星电子株式会社 用于发送/接收支持多媒体广播/组播服务的控制信息的装置和方法
CN1906887A (zh) * 2004-03-15 2007-01-31 三星电子株式会社 多媒体广播/组播业务系统中最大化接收信号增益的方法
CN101159902A (zh) * 2007-10-26 2008-04-09 中兴通讯股份有限公司 一种多媒体广播组播系统专用载波小区的时隙配置方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102396290A (zh) * 2009-04-16 2012-03-28 华为技术有限公司 一种实现多媒体广播组播业务的移动性管理方法、设备和系统
WO2014040296A1 (fr) * 2012-09-17 2014-03-20 华为技术有限公司 Procédé de retour d'informations de sous-trame de liaison descendante, station de base et équipement d'utilisateur

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