CN101296398B

CN101296398B - Method for flexibly implementing multimedia broadcast multicast service

Info

Publication number: CN101296398B
Application number: CN2007100742285A
Authority: CN
Inventors: 郭龙平; 史莉荣
Original assignee: ZTE Corp
Priority date: 2007-04-26
Filing date: 2007-04-26
Publication date: 2011-10-26
Anticipated expiration: 2027-04-26
Also published as: CN101296398A

Abstract

The invention relates to a method for flexibly realizing a multimedia broadcasting and multicast service, which can provide the multimedia broadcasting and multicast service in cells which do not support the multimedia broadcasting and multicast service and is used for solving the problem in the existing network that, the multimedia broadcasting and multicast service is provided without any change in a node B. In the invention, a radio network controller determines whether to establish a point-to-multipoint indication channel of the multimedia broadcasting and multicast service in the cell according to the capacity of the multimedia broadcasting and multicast service of the cell in the node B, if the cells support the multimedia broadcasting and multicast service, the point-to-multipoint indication channel of the multimedia broadcasting and multicast service is established. If the cells do not support the multimedia broadcasting and multicast service, the point-to-multipoint indication channel of the multimedia broadcasting and multicast service is not established, thus being capable of providing the multimedia broadcasting and multicast service both in the cells supporting the multimedia broadcasting and multicast service and the cells which do not support the multimedia broadcasting and multicast service, and ensuring that user equipment can have the function of discontinuously receiving the point-to-multipoint control channel of the multimedia broadcasting and multicast service when receiving the multimedia broadcasting and multicast service in multimedia broadcasting and multicast service cells.

Description

A kind of method of flexible realization multimedia broadcast-multicast service

Technical field

The present invention relates to the communications field, particularly, relate to code division multiple access (Code Division Multiple Access, CDMA) in the mobile communication system, radio network controller (Radio Network Controller, RNC) according to cell multimedia broadcast multicast service (Multimedia Broadcast Multicast Service, MBMS) the different methods that realize the MBMS business flexibly of tenability.

Background technology

MBMS is a kind of shared network resource, transmits the technology of data to a plurality of targets from a data source.In order to effectively utilize mobile network resource, the 3rd generation partner project (Third Generation Partnership Project, 3GPP) the MBMS business has been proposed in R6, promptly in the mobile network, provide a data source to send the point-to-multipoint service of data to a plurality of users, the realization Internet resources are shared, improve utilization rate of network resource, especially Bao Gui air interface resource.MBMS can not only realize the classes of messages multicast and the broadcasting of plain text low rate, and can also realize the multicast and the broadcasting of high-speed multimedia business, multiple rich video, audio frequency and multimedia service are provided, this has complied with the trend of following mobile data development undoubtedly, for the development of mobile communication provides better professional prospect.

The structural model figure of MBMS operation system as shown in Figure 1.The edge of MBMS bearer service is Gmb, Gi reference point, be broadcast multicast service center (Broadcast/Multicast Service Center, BM-SC) with gateway GPRS supporting node (GGSN) (General Packet Radio Service Gateway Support Node, GGSN) interface between, the Gmb interface provides the chain of command function, and the Gi interface is the user plane bearer function.Here unique newly-increased interface is the Gmb interface, and other all is the interface that the WCDMA/GSM network has existed.BM-SC is newly-increased mobile network functional entity, and it is the inlet of content provider (Content Provider), be used for authorizing and initiating the MBMS bearer service at mobile network, and plan transmits the MBMS content to schedule.

To existing WCDMA Packet Based Network functional entity: GGSN, service universal grouping wireless business supporting node (Serving General Packet Radio Service Support Node, SGSN), wireless access network (Radio Access Net, RAN) and subscriber equipment (User Equipment, UE), also need to increase MBMS correlation function and process.

RAN comprises RNC and B node (Node B).MBMS has introduced three kinds of new logic channels in RAN: the MBMS point is to multiple spot control channel (MBMS point-to-multipoint Control Channel, MCCH), MBMS point-to-multipoint service channel (MBMS point-to-multipoint Traffic Channel, MTCH), the MBMS point is to multiple spot scheduling channel (MBMS point-to-multipoint SchedulingChannel, MSCH), three kinds of newly-increased logic channels all are mapped to forward access channel (Forward Access Channel, FACH) on, FACH be mapped to auxilliary public physical control channel (Secondary Common Control Physical Channel, SCCPCH) on.MBMS has also introduced a kind of new physical channel in RAN: the MBMS point to the multiple spot indicating channel (MBMS point-to-multipoint indicator Channel, MICH).The MBMS business has two kinds of send modes in RAN: point-to-point (point to point, PTP) and put multiple spot (point to multipoint, PTM).(Dedicated Traffic Channel DTCH) transmits data, is that a UE monopolizes by dedicated logical channel under the PTP transmission means; Transmit data by common logical MTCH under the PTM mode, for a plurality of UE share.

According to present 3GPP agreement, support the MBMS business, RAN must have the MBMS tenability, is embodied as the MBMS tenability of sub-district, and promptly the MBMS business can only send in the sub-district of supporting MBMS.If MBMS is supported in the sub-district, RNC need notify NodeB to set up MICH physical channel and MCCH logic channel in the sub-district when district common channel is set up, as shown in Figure 2, RNC sends Common transport channel to NodeB and sets up FACH and the SCCPCH that carrying MCCH is set up in request message COMMON TRANSPORT CHANNEL SETUP REQUEST request, carry simultaneously in the message and set up the required configuration parameter of MICH physical channel, if NodeB supports the MBMS business, set up FACH and the SCCPCH that carries MCCH after then receiving message, and according to MICH parameter foundation of carrying in the message and activation MICH physical channel, set up the incidence relation of the SCCPCH of MICH and carrying MCCH simultaneously, return Common transport channel to RNC then and set up response message COMMON TRANSPORT CHANNEL SETUP RESPONSE, RNC receives behind the response message SCCPCH and the FACH information of broadcast bearer MCCH in broadcast, and so far MCCH and MICH successfully set up.If respective cell is not supported the MBMS business among the NodeB, can't set up the MICH channel after then receiving message, so carrying FACH and the SCCPCH of MCCH does not set up yet, return Common transport channel to RNC and set up failed message COMMON TRANSPORT CHANNEL SETUP FAILURE, carry the failure reason value " MICH not supported " of not supporting MICH, so far MCCH and MICH set up failure, and the MBMS business can not be provided.This just means if operator wants to provide the MBMS business, needs a newly-built cover to support a large amount of NodeB in the Radio Access Network of MBMS or the upgrading existing network, to preserving peace of existing network slip over cross all unfavorable.Therefore, consider the maintenance and the compatibility of network,, how to make that the existing network change is minimum and the MBMS business can be provided is very important especially at the MBMS business development initial stage.

From agreement, can know, what MICH carried above is the indication of MBMS notice, amount of information is very little, and MCCH carries above is detailed MBMS service announcements, the RB configuration waits the MBMS control information, amount of information was very big when the MBMS number of services of carrying in the sub-district was more, it is also longer that UE reads time of the informational needs that MCCH go up to send, for this reason, UE can determine whether reading MCCH message by monitoring MICH, thereby realize the discontinuous reception of MCCH, prolong the stand-by time of UE, the introducing of MICH only is for the UE power saving, but agreement is not essential to the MICH tenability of UE, promptly supports the UE of MBMS can not support MICH; We it can also be seen that from agreement, the foundation of MICH physical channel needs the participation of NodeB, be that NodeB must set up the MICH channel in respective cell, the MBMS function just can be supported in this sub-district, and the foundation of MCCH logic channel is transparent to NodeB, promptly no matter whether the respective cell among the NodeB supports the MBMS function, the MCCH channel can be set up in theory.

Summary of the invention

Technical problem to be solved by this invention is, characteristics at MBMS business and existing network, a kind of method of flexible realization MBMS business is provided, use this method to provide MBMS business in the sub-district of not supporting MBMS, promptly this method can not done any change to the NodeB in the existing network MBMS business can be provided.

A kind of method of flexible realization MBMS business may further comprise the steps:

Whether the sub-district that step 1: RNC detects among the NodeB supports the MBMS business;

Step 2: if the step 1 testing result for not, then RNC will not carry the Common transport channel of setting up the required configuration information of MICH and set up request message and send to NodeB;

After step 3: NodeB receives that not having the Common transport channel of setting up the required configuration information of MICH sets up request message, only set up FACH and the SCCPCH of carrying MCCH, return Common transport channel to RNC then and set up response message in respective cell;

Step 4: RNC can be by FACH and the SCCPCH information of broadcast all UE broadcast bearer MCCH in the sub-district after receiving the response message of NodeB.

In above-mentioned steps two, if the step 1 testing result is for being, then RNC will carry the Common transport channel of setting up the required configuration information of MICH and set up request message and send to NodeB.

In above-mentioned steps three, NodeB receive carry set up the required Common transport channel of MICH and set up request message after, set up FACH and the SCCPCH of carrying MCCH in respective cell, and according to MICH configuration information foundation of carrying in the message and activation MICH physical channel, set up the incidence relation of MICH and SCCPCH simultaneously, return Common transport channel to RNC then and set up response message.

In above-mentioned steps four, behind the FACH and SCCPCH information of RNC by broadcast all UE broadcast bearer MCCH in the sub-district, the sub-district can provide the MBMS business.

According to technical scheme of the present invention, whether RNC sets up the MICH physical channel at the MBMS ability decision of NodeB sub-district in the sub-district, if the sub-district is supported MBMS then is built the MICH physical channel, if not supporting MBMS, the sub-district do not build the MICH physical channel, like this can be simultaneously in the sub-district of supporting the MBMS function with do not support that setting up the MCCH channel in the MBMS function sub-district provides MBMS business, and guaranteed that UE receives the function of MBMS discontinuous MCCH of reception when professional in the sub-district of supporting the MBMS function.

Description of drawings

Fig. 1 is the structural model figure of MBMS operation system;

Fig. 2 is the MCCH of existing protocol and the MICH binding process flow diagram when setting up;

Fig. 3 is that MCCH of the present invention and MICH set up schematic flow sheet.

Embodiment

Set forth this method below by specific embodiment.

As Fig. 3, show according to MCCH of the present invention and MICH and set up flow chart.

Step 301 need provide the sub-district of MBMS business to set up successfully;

Step 302, RNC checks whether the sub-district possesses the MBMS tenability;

Step 303, if MBMS is supported in the sub-district, then RNC directly will carry the Common transport channel of setting up the required configuration information of MICH and set up request message and send to NodeB, require NodeB to set up the MICH channel when respective cell is set up the Common transport channel of carrying MCCH;

Step 304, NodeB receive carry set up the required Common transport channel of MICH and set up request message after, set up FACH and the SCCPCH of carrying MCCH in respective cell, and, set up the incidence relation of MICH and SCCPCH simultaneously according to MICH configuration information foundation of carrying in the message and activation MICH physical channel;

Step 305, if MBMS is not supported in the sub-district, RNC sets up setting up of carrying in the request message with Common transport channel and sends to the NodeB point again after the required configuration information of MICH removes, and only requires NodeB to set up the Common transport channel that carries MCCH in respective cell, need not to set up the MICH channel;

Step 306 after NodeB receives that not having the Common transport channel of setting up the required configuration information of MICH sets up request message, is only set up FACH and the SCCPCH of carrying MCCH in respective cell, need not to set up the MICH channel.

After above-mentioned steps is finished, NodeB can return a Common transport channel and set up response message to RNC, RNC can be by SCCPCH and the FACH information of broadcast all UE broadcast bearer MCCH in the sub-district after receiving message, and this moment, this sub-district can provide the MBMS business.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. a method that realizes multimedia broadcast-multicast service flexibly is characterized in that, may further comprise the steps:

Step 1: whether the sub-district that radio network controller detects among the NodeB supports multimedia broadcast-multicast service;

Step 2: if the step 1 testing result for not, then radio network controller will not carry and sets up multimedia broadcast-multicast service and put the Common transport channel of the required configuration information of multiple spot indicating channel and set up request message and send to NodeB:

Step 3: NodeB receive do not have set up multimedia broadcast-multicast service and put the Common transport channel of the required configuration information of multiple spot indicating channel and set up request message after, only set up forward access channel and the auxilliary public physical control channel that the bearing multimedia broadcast multicast service is put the multiple spot control channel, return Common transport channel to radio network controller then and set up response message in respective cell;

Step 4: radio network controller is received forward access channel and the auxilliary public physical control channel information that can put the multiple spot control channel behind the response message of NodeB by broadcast all UE broadcast bearer multimedia broadcast-multicast services in the sub-district.

2. the method for flexible realization multimedia broadcast-multicast service according to claim 1, it is characterized in that, in step 2, if the step 1 testing result is for being, then radio network controller will carry and set up multimedia broadcast-multicast service and put the Common transport channel of the required configuration information of multiple spot indicating channel and set up request message and send to NodeB.

3. the method for flexible realization multimedia broadcast-multicast service according to claim 2, it is characterized in that, in step 3, NodeB receive carry set up multimedia broadcast-multicast service and put the required Common transport channel of multiple spot indicating channel and set up request message after, set up forward access channel and the auxilliary public physical control channel that the bearing multimedia broadcast multicast service is put the multiple spot control channel in respective cell, and put according to the multimedia broadcast-multicast service that carries in the message that multiple spot indicating channel configuration information is set up and the activating multimedia broadcast multicast service is put multiple spot indicating channel physical channel, set up multimedia broadcast-multicast service simultaneously and put multiple spot indicating channel and the incidence relation of assisting public physical control channel, return Common transport channel to radio network controller then and set up response message.

4. the method for flexible realization multimedia broadcast-multicast service according to claim 1, it is characterized in that, in step 4, after radio network controller was put the forward access channel and auxilliary public physical control channel information of multiple spot control channel by broadcast all UE broadcast bearer multimedia broadcast-multicast services in the sub-district, the sub-district can provide multimedia broadcast-multicast service.