WO2010072141A1 - Procédé et système de mise à jour de l'indication de contrôle du service de diffusion mbms - Google Patents

Procédé et système de mise à jour de l'indication de contrôle du service de diffusion mbms Download PDF

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Publication number
WO2010072141A1
WO2010072141A1 PCT/CN2009/075831 CN2009075831W WO2010072141A1 WO 2010072141 A1 WO2010072141 A1 WO 2010072141A1 CN 2009075831 W CN2009075831 W CN 2009075831W WO 2010072141 A1 WO2010072141 A1 WO 2010072141A1
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WO
WIPO (PCT)
Prior art keywords
control signaling
signaling
mbms
base station
mce
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PCT/CN2009/075831
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English (en)
Chinese (zh)
Inventor
苟伟
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中兴通讯股份有限公司
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Publication of WO2010072141A1 publication Critical patent/WO2010072141A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a Long Term Evolution (LTE) system, and in particular, to a multimedia broadcast/multicast service (MBMS) control signaling update method and system.
  • LTE Long Term Evolution
  • MBMS multimedia broadcast/multicast service
  • the 3rd Generation Partnership Project (3GPP) proposed MBMS, which is a technology that transmits data from one data source to multiple targets, and implements the network (including the core).
  • Network and access network Sharing of resources increases the utilization of network resources (especially air interface resources).
  • the 3GPP-defined MBMS not only enables plain text low-rate message-like multicast and broadcast, but also enables high-speed multimedia services to broadcast and multicast, providing a variety of rich video, audio and multimedia services, which undoubtedly conforms to future mobile
  • the trend of data development provides a better business prospect for 3G development.
  • MBMS is determined to be semi-static according to the characteristics of MBMS. The reason is mainly because the amount of MBMS is basically fixed. Secondly, the location and size of resources allocated to MBMS remain basically unchanged, and the MBMS area remains basically unchanged. The number of MBMS in the area is basically unchanged, and MBMS is on the Broadcast Control Channel (BCCH). The scheduling configuration information changes slowly, and the MBMS control signaling update is slow. These are all determined by the characteristics of MBMS itself.
  • BCCH Broadcast Control Channel
  • one of the main purposes of the present invention is to provide a method for updating MBMS control signaling, which is used to solve how to select appropriate node configuration control signaling, and how to select an appropriate node to determine whether control signaling is updated.
  • the core idea of the present invention is to determine whether the control signaling of the MBMS data is updated by the Multi-cell/Multicast Coordination Entity (MCE), and generate corresponding update indication signaling, which is introduced by the present invention.
  • the MBMS control signaling update indication channel is configured to carry MBMS control channel signaling update indication signaling, where the update indication channel is carried on a different bearer, or directly sends MBMS control channel signaling update indication information on some resources,
  • the purpose of indicating to the terminal whether the MBMS control signaling is updated is implemented.
  • the terminal re-receives the control signaling of the MBMS only when the control signaling of the MBMS data is updated, and the terminal does not receive the control signaling at other times.
  • the MBMS control signaling is carried on the MBMS control channel.
  • the MBMS control channel is referred to as a MCCH (Multicast Control Channel).
  • Many MBMS control signaling is carried on the MBMS control channel.
  • a method for updating MBMS control signaling the steps are as follows:
  • Step A The multi-cell broadcast multicast coordination entity MCE is a multi-cell MBMS configuration control signaling in the area;
  • Step B The MCE determines whether the control signaling of each MBMS is updated compared with the previous control signaling, and generates update indication signaling according to the judgment result;
  • Step C The MCE sends the control signaling and the update indication signaling to the relevant base station.
  • Step D The base station sends the control signaling and the update indication signaling to the terminal.
  • step C includes the following steps:
  • the MCE determines whether the control signaling to be configured by the MBMS is updated compared with the last control signaling of the MBMS; if no update occurs, the MCE sends the update indication signaling only to the base station related to the MBMS, and does not send the corresponding control. Signaling; if an update occurs, the MCE needs to send the updated control signaling and the corresponding update indication signaling to the base station related to the MBMS;
  • the step D further includes: the base station parsing and reorganizing the control signaling and the update indication signaling of the MBMS sent by the MCE.
  • the process is that the base station converts the protocol format of the MCE into a protocol format that the terminal can recognize. In the conversion, the obtained new signaling content is substantially the same as the signaling content sent by the MCE to the base station, and the format is different, and then sent to the terminal.
  • step D the base station determines, according to the received update indication signaling, whether the control signaling is updated, and if no update occurs, directly using the previously received control signaling that is previously stored; if the update occurs, receiving The updated control signaling occurs and the updated control signaling is stored locally.
  • step D the terminal first receives the update indication signaling, and if the terminal determines, according to the update indication signaling, that the control signaling does not change, the last used received is stored locally. Control signaling.
  • the MCE combines the quality of service (QoS) and the service of the service.
  • the secondary data packet size is configured to configure the control signaling of the MBMS, and the control signaling includes at least the scheduling configuration information related to the MBMS, where the scheduling configuration information includes at least: a time-frequency resource, a modulation mode, and a coding rate information.
  • the MCE generates other information than the above-mentioned MBMS-related scheduling configuration information, such as a Primary Multicast Control Channel (P-MCCH) and/or a Secondary Multicast Control Channel (Secondary Multicast).
  • P-MCCH Primary Multicast Control Channel
  • S-MCCH Secondary Multicast Control Channel
  • the resource scheduling configuration information of the Control Channel, S-MCCH, and the like may also be adopted.
  • the foregoing step process may be included in the control signaling or a new signaling may be separately formed, and the MCE judges and forms a corresponding update indication letter.
  • the command is sent to the base station. If the base station needs to be forwarded to the terminal, the base station parses and reassembles it and sends it to the terminal.
  • Another object of the present invention is to provide a system for updating MBMS control signaling.
  • the technical solution of the present invention is implemented as follows:
  • a system for updating MBMS control signaling comprising:
  • the MCE determines that the control signaling to be configured by the MBMS is not updated compared with the previous control signaling, the MCE sends the update indication signaling only to the relevant base station, Sending corresponding control signaling; if an update occurs, the MCE sends the updated control signaling and the corresponding update indication signaling to the base station.
  • the base station determines, according to the received update indication signaling, whether the control signaling is updated, and if no update occurs, directly using the locally stored previous reception. Control signaling; if an update occurs, receiving updated control signaling and locally storing the updated control signaling.
  • the terminal first receives the update indication signaling, and determines, according to the received update indication signaling, whether the control signaling is updated, and if not updated, uses the last received stored Local control signaling; if an update occurs, new control signaling is received and stored locally.
  • control signaling includes at least scheduling configuration information related to the MBMS, and the scheduling configuration information includes at least: a time-frequency resource, a modulation mode, and a coding rate.
  • the base station needs to parse and recombine the control signaling and the corresponding update indication signaling. , converted to a protocol format recognizable by the terminal (the signaling content is unchanged, the format is reorganized).
  • the MCE can notify the base station and the terminal in time by updating the indication signaling according to the update of the control signaling.
  • the MCE only needs to send the update indication signaling to the base station, The communication between the MCE and the base station is greatly reduced, and the system execution efficiency is improved.
  • the base station needs to send update indication signaling and corresponding control signaling to the terminal regardless of whether the control signaling is updated, but the update indication signaling generally arrives at the terminal first, for the established link.
  • the terminal that is receiving the MBMS data does not need to receive the control signaling that has not been updated when it is determined that the control signaling has not changed, thereby saving the power of the terminal.
  • FIG. 1 is a flowchart of MBMS control signaling and update indication signaling of the present invention
  • 2A is a network architecture for implementing MBMS control signaling transmission separated by an MCE and a base station based on the system according to the present invention
  • FIG. 2A there are two control signaling transmission modes of the MBMS control plane, as shown in FIG. 2A and FIG. 2B respectively.
  • FIG. 2A the control signaling of the core network is transmitted from the MBMS gateway to the MCE through the M3 interface. Then, the MCE is transmitted to the relevant base station through the M2 interface.
  • FIG. 2B the MCE entity is located in the base station, and after the control signaling is transmitted from the MBMS gateway to the MCE entity through the M3 interface, the MCE directly transmits the control signaling to the base station through the internal interface. Process the entity accordingly.
  • 2B is that the interface between the MCE and the base station is used as an internal interface in 2B, thereby converting the M2 interface to the internal interface, so that the M2 interface does not need to be standardized.
  • the two processes have their own advantages in different application scenarios, so LTE supports two MBMS control plane processes at the same time.
  • the MCE belongs to the logical entity of the MBMS control plane, and upwardly receives the MBMS control signaling of the core network sent by the MBMS gateway, and goes down to the node and the Multimedia Broadcast multicast service Single Frequency Network (MBSFN). All base stations participating in the MBMS transmission in the area are connected, and the control signaling of the MBMS is directly configured and transmitted to the relevant base station.
  • the actual function is to coordinate the work of the MBSFN system in a plurality of base stations in the MBSFN area, and to function to uniformly configure the scheduling configuration information of the MBMS for the relevant base stations in the MBSFN area.
  • the above MCEs may have different names in different systems, but actually perform the same functions and have the characteristics of being connected with related base stations.
  • the MCE configuration control signaling is based on:
  • the MCE determines the scheduling period of each MBMS according to the media type of all MBMSs in the MBSFN area, the average data rate, and the physical resources of the multimedia broadcast multicast allocated by the system.
  • the media types include text, audio, video, graphics, binary data, etc., because the same media type also has a large difference in average data rates (such as normal audio, high quality audio, stereo;), so further based on Average business data
  • the rate is used to determine the configured period and the number and location of transmissions on physical resources within an MBMS modification period.
  • Step 101 The MCE determines whether the control signaling is configured for a certain MBMS for the first time. If yes, step 102 is performed, otherwise step 103 is performed.
  • the MCE uniformly configures control signaling for each data packet of each MBMS.
  • the control signaling includes at least resource information (transmission time and transmission frequency) used by each base station to transmit each MBMS data packet, and modulation of each data packet. Information, encoding rate information for each packet, etc.
  • the MCE uniformly configures the control signaling to ensure that, in the MBMS area, the physical signals transmitted by each MBMS packet on the antenna of each base station are exactly the same every time, so that each base station transmits every moment.
  • the electromagnetic wave signals used to carry the same MBMS data can be naturally superimposed in the air to increase the signal power.
  • Step 102 The MCE configures a control signal for the data packet to be transmitted by the MBMS in the area.
  • the MCE After the MCE configures control signaling for the data packet to be transmitted by the MBMS in the area for the first time, the MCE stores the control signaling locally for comparison judgment when the control signaling is sent next time.
  • Step 103 The MCE determines whether it is necessary to update the control signaling, and if yes, step 104 is performed; if not, step 106 is performed;
  • the MCE When the MCE configures control signaling for each MBMS packet to be transmitted, the MCE first determines whether the new control signaling needs to be configured for the MBMS data packet to be transmitted. If the MCE is scheduled, it needs to be configured with new control. Signaling, the processing flow for generating update indication signaling is performed.
  • Step 104 The MCE configures new control signaling for the data packet to be transmitted by the MBMS, and generates corresponding update indication signaling when the control signaling is updated, and sends both to the relevant base station.
  • Step 105 After parsing the received new control signaling and its corresponding update indication signaling, the base station reorganizes according to the format agreed with the terminal, and then performs step 108.
  • the 1-bit binary bit is used to form the update indication signaling.
  • the binary bit value in the update indication signaling is 0; if the MBMS control signaling occurs When updating, the binary bit value is 1; in case the new control signaling is not required, the base station can continue to use the last control signaling, and the MCE only sends the newly generated update indication signaling to the relevant Base station. Otherwise, the MCE configures new control signaling for the current data packet to be sent by the MBMS, and sends the new control signaling together with the corresponding update indication signaling to the relevant base station.
  • Step 106 The MCE does not generate new control signaling for the data packet to be transmitted by the MBMS, and only generates update indication signaling corresponding to when the control signaling does not occur, and sends the update indication signaling to the relevant base station.
  • Step 107 After the base station parses the received update indication signaling, the base station needs to reassemble the last sent control signaling and the received update indication signaling according to a format agreed by the terminal, and then perform step 108.
  • the base station receives the update indication signaling sent by the MCE, and determines, according to the update indication signaling, whether the control signaling is updated. If the update does not occur, the base station needs to send the previously sent control signaling from the local storage unit. Read out, and then send the new update indication signaling to the terminal together with the format recombination; if an update occurs, it also needs to receive new control signaling, and then send the new update indication signaling together with the format recombination. Give the terminal.
  • Step 108 The base station sends the re-established control signaling and the re-established update indication signaling to the terminal.
  • the terminal that accesses the first time needs to receive the control signaling and the update indication signaling at the same time.
  • the terminal For the terminal that has already accessed, the terminal only needs to receive the update indication signaling first, and determine the control signaling according to the update indication signaling. Whether an update occurs, and if an update occurs, receiving control signaling, If the update does not occur, the previously received control signaling is directly read from the local.
  • the above step process performs the same processing operation as described above for each data packet of the MBMS to be transmitted.
  • the MCE may further generate other information than the above-mentioned MBMS-related scheduling configuration information, and is also determined by the MCE, and forms a corresponding update indication signaling to be sent to the base station. If the base station needs to be forwarded to the terminal, the base station resolves and reassembles. Send to the terminal.
  • the other information may be resource configuration information of the P-MCCH and/or the S-MCCH, and the information may also be processed in the same manner as the control signaling, that is, resource configuration information such as P-MCCH and/or S-MCCH occurs.
  • Update the updated information and the corresponding update indication information are sent to the base station, and the base station sends the information to the terminal again; if the updated information does not occur, the base station is notified by the update indication information, and the base station sends the last locally stored information to the terminal. .
  • the base station After the base station obtains the control signaling or update indication signaling of the data packet of each MBMS to be sent, the base station parses, and then reorganizes each MBMS data packet to be sent according to the format that the terminal can recognize.
  • Control signaling and update indication signaling includes: parsing the updated control signaling sent by the MCE, and reassembling the data format that can be identified by the terminal; and, according to the update indication signaling sent by the MCE, organizing the control signaling for the data packet that has not been updated; The format and requirements of the indication signaling are updated to form corresponding update indication signaling that satisfies the terminal interception.
  • the update indication signaling of the terminal monitoring refers to first having a data format that the terminal can recognize, and secondly, signaling that is sent on the resource that the system listens to the MBMS update indication signaling.
  • the base station sends the control signaling of the MBMS data packet to be transmitted that is finally formed and the update indication signaling of the MBMS data packet to be sent to the terminal on the specified resource.
  • the MCE judges whether the control signaling to be sent is updated, and sends the updated control signaling to the relevant base station, and sends the update indication signaling to the relevant base station, because the data format sent by the MCE may be There is a possibility that the terminal cannot recognize it (because MCE and end The protocol for the formation of the signaling may be different.
  • the base station parses the control signaling and the update indication signaling sent by the MCE, and then reassembles the packet and sends the packet to the terminal.
  • the advantage is that the unified processing of the MCE is implemented, the amount of data transmitted by the MCE to the terminal can be reduced, the respective processing of the relevant base stations can be avoided, and the possibility of error in signaling transmission and processing can be reduced. If the signaling format terminal of the MCE organization can recognize the other, the process of parsing the reassembly packet by the base station is omitted.

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

Abstract

Cette invention concerne un procédé et un système permettant de mettre à jour l'indication de contrôle du service de diffusion MBMS (multimedia broadcast multicast service) ; ce procédé et ce système sont utilisés pour résoudre les problèmes technologiques de sélection d'un nœud approprié pour configurer l'indication de contrôle, de sélection d'un nœud approprié pour estimer si l'indication de contrôle est mise à jour, de notification à un terminal de la mise à jour de l'indication de contrôle, en vue de réduire la réception récurrente de la même indication de contrôle dans le terminal. Dans cette invention, une entité de coordination de diffusion multicellulaire (MCE) détermine si l'indication de contrôle des données du MBMS est mise à jour, et génère le signalement correspondant afin d'indiquer au terminal si l'indication de contrôle du MBMS est mise à jour. Le terminal ne reçoit l'indication de contrôle du MBMS que deux fois si l'indication de contrôle des données du MBMS est mise à jour, sinon le terminal ne reçoit pas d'indication de contrôle. L'invention permet de réduire le trafic entre l'entité MCE et la station de base, d'améliorer l'efficacité d'exécution du système et d'augmenter la puissance du terminal.
PCT/CN2009/075831 2008-12-26 2009-12-22 Procédé et système de mise à jour de l'indication de contrôle du service de diffusion mbms WO2010072141A1 (fr)

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CN200810246869A CN101771945B (zh) 2008-12-26 2008-12-26 一种mbms业务控制信令更新的方法及系统
CN200810246869.9 2008-12-26

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CN101784012B (zh) * 2009-01-15 2013-12-04 中兴通讯股份有限公司 多媒体广播组播业务控制信令更新指示方法与装置
CN102724636B (zh) * 2011-03-30 2017-02-01 中兴通讯股份有限公司 一种mbms业务处理方法和系统

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CN1972471A (zh) * 2006-11-30 2007-05-30 中兴通讯股份有限公司 一种通知移动多媒体广播终端控制信息表更新状态的方法
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