CN102036174B - Method and system for transmitting multimedia broadcast multicast service (MBMS) notification information - Google Patents

Method and system for transmitting multimedia broadcast multicast service (MBMS) notification information Download PDF

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Publication number
CN102036174B
CN102036174B CN200910178911.2A CN200910178911A CN102036174B CN 102036174 B CN102036174 B CN 102036174B CN 200910178911 A CN200910178911 A CN 200910178911A CN 102036174 B CN102036174 B CN 102036174B
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China
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mcch
number
dci form
mbms
described
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CN200910178911.2A
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Chinese (zh)
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CN102036174A (en
Inventor
毛磊
马子江
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中兴通讯股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W68/00User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources

Abstract

The invention discloses a method and a system for transmitting multimedia broadcast multicast service (MBMS) notification information and relates to a long term evolution (LTE) system. The method comprises the following step that: when the number of MBMS point-multipoint control channels (MCCH) used in the current cell is updated, a system side informs user equipment of the updated number of the MCCH used in the cell through a system message, searches for a downlink control information (DCI) format corresponding to the updated number of the MCCH used in the cell from a preset corresponding relation between the number of the MCCH and the DCI format, bears the MBMS notification information with the searched DCI format and transmits the MBMS notification information to the user equipment. Resource waste of a physical downlink control channel (PDCCH) DIC format which is configured fixedly and can bear a large amount of data when the number of the MCCH is small is avoided.

Description

A kind of transmission method of MBMS announcement information and system

Technical field

The present invention relates to LTE (Long Term Evolution, Long Term Evolution) system, be particularly related to transmission method and the system of a kind of multimedia broadcasting and multicast service (Multimedia Broadcast Multicast Service, MBMS) announcement information (MBMS Notification information).

Background technology

Along with the fast development of Internet and popularizing of large-screen multi-functional mobile phone, a large amount of Mobile data multimedia services and various high bandwidth multimedia service are there is, for example, video conference, television broadcasting, video request program, advertisement, online education, interactive game etc., this has met the business demand that mobile subscriber constantly rises on the one hand, simultaneously also for mobile operator brings new business growth point.These Mobile data multimedia services require multiple users can receive identical data simultaneously, compared with general data service, have the features such as data volume is large, duration length, delay sensitive.

In order to effectively utilize mobile network resource, third generation partner program (3rd GenerationPartnership Project, 3GPP) MBMS business is proposed, this business is a kind of technology that transmits data from a data source to multiple targets, realize sharing of network (comprising core net and Access Network) resource, improved the utilance of Internet resources (especially air interface resource).The MBMS of 3GPP definition not only can realize classes of messages multicast and the broadcast of plain text low rate, but also can realize broadcast and the multicast of high-speed multimedia business, multiple abundant video, audio frequency and multimedia service are provided, this has complied with the trend of following Mobile data development undoubtedly, for the development of 3G provides better business prospect.

The feature of MBMS business is that the data volume of business is large, terminal receive time the duration long, average data rate is constant.These characteristics has determined the scheduling of MBMS business, control signal configuration is all semi-static, it is the schedule information of MBMS business, control signal information all " for a long time " remains unchanged, each like this MCCH (MBMSPointto-multipointControl Channel, the point-to-multipoint control channel of MBMS) cycle, system side sends one and does not have vicissitudinous information (send is all the time because all may there be at any time new user's access).For a terminal that has received MCCH information, there is no need all to go to receive the MCCH information not changing so at every turn, can cause like this terminal expense electricity, because MCCH contains much information, receive and relatively power consumption of resolving.So having proposed to increase a MCCH information updating indication information (is MCCH change notification, or MBMSnotification Indicator, can be described as MBMS notification message, MBMS announcement information or the instruction of MBMS notice etc.), describe MCCH information by a small amount of physical layer information whether variation has occurred, the terminal having accessed only need to be monitored a small amount of information, go again to determine whether receive MCCH information according to MBMS notification message terminal, thereby play the effect of power saving.

In addition because overlapping situation may appear in MBMS business sending zone, may there are multiple MCCH in eMBMS (Evolved MBMS) system, each MCCH, corresponding to different MBMS business sending zones, wherein only carries the control information of the MBMS business of corresponding MBMS business sending zone transmission.Wherein, the number of MCCH depends in community joins the affiliated MBMS business generation area of business, and therefore the number of MCCH is variable.

As from the foregoing, in LTE, be badly in need of proposing a kind of mechanism of new MBMS notification message, to be suitable for the scene of multiple MCCH and MCCH number of variations at present.

Summary of the invention

Technical problem to be solved by this invention is, a kind of transmission method and system of MBMS announcement information is provided, thereby the in the situation that of multiple MCCH and MCCH number of variations, MBMS transmission announcement information.

In order to solve the problems of the technologies described above, the transmission method that the invention provides a kind of MBMS announcement information comprises:

When the MCCH number using in current area occurs to upgrade, system side is notified the MCCH number using in community after upgrading to subscriber equipment by system message, and from the MCCH number of prior setting and the corresponding relation of Downlink Control Information (DCI) form, search with upgrade rear community in DCI form corresponding to the MCCH number that uses, adopt the DCI form carrying MBMS announcement information finding, described MBMS announcement information is sent to described subscriber equipment.

Further, in said method, described subscriber equipment receives described system message, therefrom obtain the MCCH number using in community after upgrading, and from the MCCH number of prior setting and the corresponding relation of DCI form, search the DCI form corresponding with the MCCH number using in obtained community, adopt the DCI format detection finding and receive described MBMS announcement information.

Wherein, in the corresponding relation of described MCCH number and DCI form, the MCCH number DCI form shared bit number corresponding with it is directly proportional.

The corresponding relation of described MCCH number and DCI form comprises newly-increased DCI form.

In the corresponding relation of described MCCH number and DCI form, when MCCH number is different, corresponding DCI form is identical or different.

The invention also discloses a kind of system of MBMS transmission announcement information, comprise network equipment and subscriber equipment, wherein:

Described network equipment, while occurring to upgrade for the MCCH number using in current area, to described subscriber equipment transmitting system message, this system message comprises upgrades the MCCH number using in rear community, and from the MCCH number of prior setting and the corresponding relation of DCI form, search with upgrade rear community in DCI form corresponding to the MCCH number that uses, adopt the DCI form carrying MBMS announcement information finding, described MBMS announcement information is sent to described subscriber equipment;

Described subscriber equipment, be used for receiving described system message, therefrom obtain the MCCH number using in community after upgrading, and from the MCCH number of prior setting and the corresponding relation of DCI form, search the DCI form corresponding with the MCCH number using in obtained community, adopt the DCI format detection finding and receive described MBMS announcement information.

Wherein, in the corresponding relation of described MCCH number and DCI form, the MCCH number DCI form shared bit number corresponding with it is directly proportional.

The corresponding relation of described MCCH number and DCI form comprises newly-increased DCI form.

In the corresponding relation of described MCCH number and DCI form, when MCCH number is different, corresponding DCI form is identical or different.

The present invention is according to MCCH channel number difference, to the demand data difference of MBMS transmission announcement information, select neatly existing PDCCH Downlink Control Information (downlink control information, DCI) format to carry MBMS announcement information; And do not increasing under the prerequisite that UE processes, avoiding PDCCH DCI format that one of fixed configurations can the carry more data wasting of resources in the time that MCCH number is few.

Brief description of the drawings

Fig. 1 is the flow chart of the inventive method;

Fig. 2 is network diagram in the present embodiment 1;

Fig. 3 is the flow chart of the present embodiment 1.

Embodiment

Main design of the present invention is, in existing LTE system, PDCCH (Physical DownlinkControl Channel, Physical Downlink Control Channel) generally transmit three kinds of information, that is: the schedule information of the schedule information of downlink data transmission, transmitting uplink data, and uplink power control order, accordingly, DCI (Downlink Control Information, Downlink Control Information) format (form) can be divided into following several (wherein, bit number according to bandwidth change):

DCI format 0, for sending the resource allocation information of up SCH (Shared Channel shared channel), (approximately 38 bits, 20MHz bandwidth, 4 transmitting antennas, containing 16 bit CRC);

DCI format 1, for sending the resource allocation information (approximately 56 bit) in descending SIMO (single-antenna port/transmit diversity, single rank open-loop scheme) situation;

DCI format 2, for sending the resource allocation information (approximately 72 bit) in descending MIMO (open/close is multiplexing) situation;

DCI format 3, for sending for PUSCH (Physical Uplink Share Channel, Physical Uplink Shared Channel) and PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) 2 bit power control commands, (approximately 38 bit).

In addition, for each form of DCI, also have different selections, such as format1, also can be subdivided into 1A, 1B, 1C or 1D, be respectively used to different occasions, and its bit number that can carry is also different.

Therefore, technical solution of the present invention will form mapping relations between MBMS announcement information and PDCCH DCI format, in the time of the number of variations of MCCH channel, also the bit number that just means MBMS announcement information changes, can carry MBMS announcement information with different PDCCH DCI format, like this, UE just can know the number of MCCH in current area according to system message, and by corresponding mapping relations, can know in current area, which PDCCH DCIformat MBMS announcement information is carried in, just detect and receive MBMS notification message with corresponding DCI format, as shown in Figure 1.

Wherein, system side (as, eNB or BMSC BroadCast MultiCast Service center etc.) and UE side can arrange in advance the corresponding relation between MCCH number and DCI format, or determined the corresponding relation of MCCH number and DCI format by system side, by signaling, this corresponding relation is notified to UE again, for example, the corresponding relation of MCCH number and DCI format can be as shown in table 1:

Table 1 is the mapping table of MCCH number and DCI format

MCCH number ??DCI?format ??1 ??Format?1A ??2 ??Format?1C ??3 ??Format?1B ??4 ??Format?3C ??5 ??Format?3C ??6 ??Format?3A ??… ??…

In different embodiment, it (is that MCCH number is when more that the concrete corresponding relation of MCCH number and DCI format can be selected corresponding DCI form according to the data load of MBMS notification message under different MCCH numbers, the data load of MBMA notification message is also larger, just selects the DCI form that resource is large);

In addition, also allow for carrying MBMS notification message with identical DCI form under different MCCH numbers, now may be in some cases, there are some wastings of resources.

Below in conjunction with drawings and the specific embodiments, technical solution of the present invention is described in further detail.

A system for MBMS transmission announcement information, comprises network equipment and UE.

Network equipment, when the MCCH number using in current area occurs to upgrade, to UE transmitting system message, this system message comprises upgrades the MCCH number using in rear community, and from the MCCH number of prior setting and the corresponding relation of DCI form, search with upgrade rear community in DCI form corresponding to the MCCH number that uses, adopt the DCI form carrying MBMS announcement information finding, this MBMS announcement information is sent to UE;

UE, be used for receiving described system message, therefrom obtain the MCCH number using in community after upgrading, and from the MCCH number of prior setting and the corresponding relation of DCI form, search the DCI form corresponding with the MCCH number using in obtained community, adopt the DCI format detection finding and receive MBMS announcement information;

Wherein, in the corresponding relation of MCCH number and DCI form, in the corresponding relation of MCCH number and DCI form, can comprise newly-increased DCI form, in the time that existing DCI form is inadequate, can design new DCI form (i.e. newly-increased DCI form) to mate the MBMS notification message under certain MCCH number; Different MCCH numbers can the identical or different DCI form of correspondence.

In a preferred embodiment, consider when MCCH number is more, the data load of MBMA notification message is also larger, therefore, in the MCCH number of setting in advance and the corresponding relation of DCI form, the MCCH number DCI form shared bit number corresponding with it can be directly proportional, and MCCH number is larger, and the shared bit number of its corresponding DCI form is also just more.

Embodiment 1

The present embodiment, to configure two MCCH in community as example (as shown in Figure 2), illustrates the process of MBMS transmission announcement information, and this process as shown in Figure 3, comprises the following steps:

Step 301: system side sends to UE by the configuration information of two MCCH channels in system message according to the MCCH number of setting and the corresponding relation of DCI form, selects two a kind of DCI forms corresponding to MCCH to carry MBMS announcement information simultaneously;

In this step, the corresponding relation of MCCH number and DCI form is that system side and UE side are appointed in advance, if existing DCI form is inadequate, also can design new DCI form (i.e. newly-increased DCI form) to mate the MBMS notification message under certain MCCH number;

In a preferred embodiment, consider when MCCH number is more, the data load of MBMA notification message is also larger, therefore, in the MCCH number of setting in advance and the corresponding relation of DCI form, the MCCH number DCI form shared bit number corresponding with it can be directly proportional, and MCCH number is larger, and the shared bit number of its corresponding DCI form is also just more.

Step 302:UE receives said system message, from this system message, know and in current area, configured two MCCH, according to the MCCH number of setting and the corresponding relation of DCI form, which kind of DCI form the MBMS announcement information of searching in current area will carry with simultaneously;

Step 303:UE detects and receives MBMS announcement information according to the DCI form finding;

Step 304: in system running, due to the initiation of business, if will increase a MCCH in community, now, system side is upgraded system message, simultaneously according to the MCCH number after increasing, from the MCCH number of setting and the corresponding relation of DCI form, selects corresponding DCI form, adopt this DCI form carrying MBMS announcement information, send to UE;

Step 305:UE receives the system message of above-mentioned renewal, according to the content of the system message of upgrading, can know that the MCCH number using in current area is 3, according to the MCCH number of setting and the corresponding relation of DCI form, know that new MBMS announcement information will be by with which kind of DCI form carrying simultaneously;

Step 306:UE detects and receives MBMS announcement information according to new DCI form.

The above; be only part embodiment of the present invention; be not intended to limit protection scope of the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in the protection range of the appended claim of the present invention.

Claims (9)

1. a transmission method for multimedia broadcasting and multicast service MBMS announcement information, is characterized in that, the method comprises:
When the point-to-multipoint control channel MCCH of the MBMS number using in current area occurs to upgrade, system side is notified the MCCH number using in community after upgrading to subscriber equipment by system message, and from the MCCH number of prior setting and the corresponding relation of Downlink Control Information DCI form, search with upgrade rear community in DCI form corresponding to the MCCH number that uses, adopt the DCI form carrying MBMS announcement information finding, described MBMS announcement information is sent to described subscriber equipment.
2. the method for claim 1, is characterized in that,
Described subscriber equipment receives described system message, therefrom obtain the MCCH number using in community after upgrading, and from the MCCH number of prior setting and the corresponding relation of DCI form, search the DCI form corresponding with the MCCH number using in obtained community, adopt the DCI format detection finding and receive described MBMS announcement information.
3. method as claimed in claim 1 or 2, is characterized in that,
In the corresponding relation of described MCCH number and DCI form, the MCCH number DCI form shared bit number corresponding with it is directly proportional.
4. method as claimed in claim 1 or 2, is characterized in that,
The corresponding relation of described MCCH number and DCI form comprises newly-increased DCI form.
5. method as claimed in claim 1 or 2, is characterized in that,
In the corresponding relation of described MCCH number and DCI form, when MCCH number is different, corresponding DCI form is identical or different.
6. a system for transmitting multimedia broadcast and multicast service MBMS announcement information, is characterized in that, this system comprises network equipment and subscriber equipment, wherein:
Described network equipment, while occurring to upgrade for the point-to-multipoint control channel MCCH of the MBMS number using in current area, to described subscriber equipment transmitting system message, this system message comprises upgrades the MCCH number using in rear community, and from the MCCH number of prior setting and the corresponding relation of Downlink Control Information DCI form, search with upgrade rear community in DCI form corresponding to the MCCH number that uses, adopt the DCI form carrying MBMS announcement information finding, described MBMS announcement information is sent to described subscriber equipment;
Described subscriber equipment, be used for receiving described system message, therefrom obtain the MCCH number using in community after upgrading, and from the MCCH number of prior setting and the corresponding relation of DCI form, search the DCI form corresponding with the MCCH number using in obtained community, adopt the DCI format detection finding and receive described MBMS announcement information.
7. system as claimed in claim 6, is characterized in that,
In the corresponding relation of described MCCH number and DCI form, the MCCH number DCI form shared bit number corresponding with it is directly proportional.
8. system as claimed in claim 6, is characterized in that,
The corresponding relation of described MCCH number and DCI form comprises newly-increased DCI form.
9. system as claimed in claim 6, is characterized in that,
In the corresponding relation of described MCCH number and DCI form, when MCCH number is different, corresponding DCI form is identical or different.
CN200910178911.2A 2009-09-29 2009-09-29 Method and system for transmitting multimedia broadcast multicast service (MBMS) notification information CN102036174B (en)

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CN200910178911.2A CN102036174B (en) 2009-09-29 2009-09-29 Method and system for transmitting multimedia broadcast multicast service (MBMS) notification information
PCT/CN2010/077288 WO2011038660A1 (en) 2009-09-29 2010-09-25 Method and system for transmitting multimedia broadcast multicast service notification information

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CN109121181A (en) * 2013-01-25 2019-01-01 华为技术有限公司 Acquisition methods, user equipment and the base station of system message

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EP1756975A1 (en) * 2004-06-16 2007-02-28 LG Electronics Inc. Notification of control information in wireless communication system
CN101505498A (en) * 2009-03-17 2009-08-12 中兴通讯股份有限公司 Downlink control information sending method, related system and apparatus

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Publication number Priority date Publication date Assignee Title
CN101541063B (en) * 2009-04-27 2014-02-05 中兴通讯股份有限公司 Transmission method and device of downlink control signaling

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN1922803A (en) * 2004-02-13 2007-02-28 Lg电子株式会社 Transmitting and receiving control information for multimedia broadcast/multicast service in mobile communication system
EP1756975A1 (en) * 2004-06-16 2007-02-28 LG Electronics Inc. Notification of control information in wireless communication system
CN101505498A (en) * 2009-03-17 2009-08-12 中兴通讯股份有限公司 Downlink control information sending method, related system and apparatus

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