CN100407803C - Method for realizing to play stream media data - Google Patents
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Abstract
A method for playing stream media data includes sending stream media data from stream media server directly to RNC in RAN without any control, transmitting received stream media data to MACC instance corresponding to each cell by RNC, mapping stream media data on FACH channel for down-sending said data after format treatment is done on received stream media data by each MACC instance.
Description
Technical field
The present invention relates to the broadcasting service technical field on the Secondary Common Control Physical Channel (SCCPCH, Secondary-Common Control Physical Channel) in the mobile communication, be meant a kind of method that on SCCPCH, realizes play stream media data especially.
Background technology
Along with development of Communication Technique, network can provide enough data wireless transmission bandwidths, and, the integrated level of mobile phone is also more and more higher, the information processing capability of mobile phone is also more and more stronger, and under this condition, mobile phone not only is used for traditional voice call business already, can also realize playing the multiple business data, just very natural appearing on the mobile phone of the stream medium data relevant with video/audio.The mobile TV function is meant that the user can directly teleview on mobile phone, investigation shows that this function is very attractive to the user.
The product of WCDMA R99, R4 protocol version has been realized commercialization, can provide point-to-point live streaming media and order program service for each user, but owing to be ptp services, thereby cost that should business is very high, and then limited the number of users of mobile TV, cause commercial value to reduce greatly.
Can realize multimedia broadcast multi-broadcasting business in the 3GPP R6 agreement, but the R6 version does not have also at present formulation to finish, ripe product is released market also needs the time of length.
At present, had a kind of cell multicast (CMB, Cell Multiple Broadcast) business, it can provide broadcasting service in the product of WCDMA R99, R4 protocol version.The CMB business characteristic is to use forward access channel FACH bearing multimedia information, as TV and advertisement or the like.Its main implementation is:
Configuration one or more SCCPCH carries the CMB channel in each sub-district, join a signaling forward access channel (FACH on every SCCPCH, Forward Access Channel) and a professional FACH, the just corresponding CMB channel of this business FACH is carrying different programme contents on each CMB channel in the sub-district.I.e. corresponding program of professional FACH.
Stream medium data from streaming media server, arrive radio network controller (RNC, RadioNetwork Controller) after, packet data convergence protocol (PDCP in RNC, PacketData Convergence Protocol), Radio Link control (RLC, Radio Link Control) and medium access control special use (MACD, Medium Access Control Dedicated) behind the entity, be sent on the professional FACH, the user in the sub-district gets final product from FACH reception data like this.Owing to realized that a plurality of users share a channel, thereby cost reduces greatly.
Though the method for existing realization play stream media data makes Radio Resource and Iub interface resource no longer be restricted, but the load in the RNC is still very heavy, reason is, even some UE receives identical stream medium data, but RNC still must transmit a piece of data in the pairing PDCP of each UE, RLC and MACD.
Have, existing implementation can cause the user's face resource wretched insufficiency in the RNC, thereby causes the number of users of actual access to be restricted again.This be because, in the prior art, no matter a user makes a phone call or the receiving stream media data, RNC is necessary for this UE and keeps signaling bear (SRB), service bearer (TRB) and corresponding user's face resource, this user's face resource just is meant PDCP, RLC, the shared resource of MACD, and it belongs to layer 2 (L2) resource.Because the restriction of software and hardware, in each sub-district, usually can only be in the RNC for limited user keeps user's face resource, as about 50, in case the user's face resource in the RNC all occupied after, will make other users can't insert use.If have a lot of CMB users to take user's face resource of RNC for a long time, will have a strong impact on other business of RNC.And for all CMB users that receive the same stream media data, the RNC side is that its data in the descending transmission of user's face are identical, and CMB user's upstream data is considerably less, and taking of 2 resources of layer is a kind of waste.As seen, there is very big drawback in the implementation of existing realization playing stream media business.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method that realizes play stream media data, to alleviate the load of RNC inside.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that realizes play stream media data, this method may further comprise the steps:
After setting up control connection according to existing mode between wireless access network RAN and the streaming media server, streaming media server is sent to radio network controller (RNC) with stream medium data, by RNC the stream medium data that receives is sent to and the public MACC example of the corresponding medium access control in each sub-district; Each MACC example is mapped to public forward access channel FACH with stream medium data and issues after receiving stream medium data and carrying out format analysis processing;
After user terminal UE and network side are finished the streaming media service protocol interaction, receiving stream media data on FACH.
Preferably, after described user terminal UE and network side are finished the streaming media service protocol interaction, and when being in the state of the last receiving stream media data of FACH, this method further comprises: whether the layer 3 in the RNC is finished with all of UE end mutual according to Radio Link control RLC entity, whether the UE that judges the receiving stream media data is current stable in shared layer 2 state of resources of RNC side, if it is stable, after then layer 3 is preserved and is used to rebuild the information of layer 2, discharge shared layer 2 resource of UE, simultaneously, the MACC example is preserved temporary transient sign of wireless network and the pairing layer of this UE 3 information that are used to discern UE, otherwise after layer 3 was waited for one default period, whether the state that rejudges layer 2 was stable.
Preferably, after shared layer 2 resource of described release UE, initiate cell update if be released the UE of layer 2 resource, the cell update response message that network side issues passes for 2 times by layer, and then this method further comprises:
Layer 3 receives the information that UE reports by Common Control Channel CCCH channel, judge whether the UE that receives the cell update response message has disconnected layer 2 and connected, if, according to the information that is used to rebuild layer 2 of having preserved, the layer 2 that rebulids between UE and the RNC is connected, by these layer 2 connections the cell update response message is issued down;
Afterwards, after layer 3 judges that the current layer of these UE 2 is in stable condition, preserve once more be used to rebuild the information of layer 2 after, discharge shared layer 2 resource of UE, simultaneously, the MACC example is preserved temporary transient sign of wireless network and the pairing layer of this UE 3 information that are used to discern UE again.
Preferably, after shared layer 2 resource of described release UE, if the UE that has been released layer 2 resource when called, this method further comprises:
Layer 3 judges that whether having disconnected layer 2 as called UE connects, if according to the information that is used to rebuild layer 2 of having preserved, rebulid UE and is connected with layer 2 between the RNC, by these layer 2 connection realization normal calls;
Behind the end of conversation, after layer 3 judges that the current layer of these UE 2 is in stable condition, preserve once more be used to rebuild the information of layer 2 after, discharge shared layer 2 resource of UE, simultaneously, the MACC example is preserved temporary transient sign of wireless network and the pairing layer of this UE 3 information that are used to discern UE again.
Preferably, after shared layer 2 resource of described release UE, if the mutual and mutual informational needs of the UE active request that has been released layer 2 resource and network side is connected when uploading by layer 2, this method further comprises:
The MACC example receives the solicited message from described UE, the layer 2 of determining this UE connect do not exist after, the wireless network that obtains this UE temporarily identifies, whether inquire about in the temporary transient identification list of self having preserved of wireless network that is released layer 2 resource exists this wireless network temporarily to identify, if exist, then indication layer 3 layer 2 of rebuilding this UEs corresponding with this sign connect; If there is no, directly abandon the information that receives.
Preferably, the solicited message from UE that described MACC example receives is the request that UE require to finish the receiving stream media data, or the periodic location update request initiatively initiated of UE.
Preferably, the wireless network that described MACC example is preserved is used to discern UE temporarily is designated: cell-radio network temporarily identifies C-RNTI.
Preferably, for the RLC entity of replying the AM pattern, the information that described layer 3 is preserved is used to rebuild layer 2 is: VtS, VrR, TxRsn, RxRsn;
For non-RLC entity of replying the UM pattern, the information that described layer 3 is preserved is used to rebuild layer 2 is: VtUs, VrUs.
Preferably, described MACC example comprises the format analysis processing that the stream medium data that receives carries out: realize the fragmentation feature of the non-UM of replying pattern RLC, add the rlc protocol head; Add the MAC protocol header.
Compared with prior art, the invention provides a kind of method of brand-new realization play stream media data, promptly directly be sent to RNC among the RAN from what the stream medium data of streaming media server did not add any control, by RNC the stream medium data that receives is sent to and each sub-district corresponding (the medium access control is public) MACC example, each MACC example is mapped to FACH with stream medium data and issues after receiving stream medium data and carrying out format analysis processing.Like this, be repeatedly to transmit identical data on PDCP, RLC and the MACD owing to no longer need RNC in the pairing layer of each user 2 resource, thereby alleviated the processing load in the RNC.
Have again, because descending stream medium data no longer takies user's layer 2 resource, therefore, the present invention further discharges layer 2 resource, rebuild again when between user and the network side interaction demand being arranged, thereby further alleviated the load of RNC internal user face resource, and solved user's face inadequate resource problem in the RNC.
Description of drawings
Figure 1 shows that the schematic diagram of using realization play stream media data of the present invention;
Figure 2 shows that the schematic flow sheet that discharges the L2 resource.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is done detailed description further again.
Several notions are described earlier for sake of convenience.
L2 can be divided into several sublayers again, be from top to bottom: the broadcasting/group broadcasting control (BMC that is used to finish multicast and broadcast control, Broadcast/Multicast Control), mainly finish the PDCP of IP head compression, be used to finish the RLC of Radio Link control, be used to finish the MAC of medium access control.
Medium access control public (MACC) and medium access control special use two parts such as (MACD) have mainly been comprised in the MAC layer.A MACC is corresponding with a sub-district, and it is used to handle district common channel; A MACD is corresponding with a user, and it is used for process user DCH channel.
Figure 1 shows that the schematic diagram of using realization play stream media data of the present invention.
After having set up control connection according to existing mode between wireless access network (RAN) and the streaming media server, streaming media server passes through core net with stream medium data, what do not add any control directly is sent to RNC among the RAN, by RNC the stream medium data that receives is sent to and the corresponding medium access control in each sub-district public (MACC) example;
Each MACC example is mapped to FACH with stream medium data and issues after the stream medium data that receives is carried out format analysis processing.
After UE and network side are finished the streaming media service protocol interaction, according to medium access control (MAC) head receiving stream media data on corresponding FACH.
Above-mentioned MACC comprises the format analysis processing that the stream medium data that receives carries out: realize the fragmentation feature of non-replying (UM) pattern RLC, add the rlc protocol head; Add the MAC protocol header,, promptly realize the format analysis processing that realizes by RLC and MACD originally so that user terminal (UE) can be discerned the information of own needs according to the MAC head.Wherein, realize the fragmentation feature of UM pattern RLC, the concrete processing mode of interpolation rlc protocol head is identical with the processing mode in the existing protocol; Add the MAC protocol header, and UE discerns the concrete processing mode of the information of own needs according to the MAC head, be " 200510001729.1 " at application number, denomination of invention is " making a plurality of users receive the method for data service under same channel ", with application number be " 200510006948.9 ", denomination of invention does not repeat them here for open in the Chinese patent application of " making a plurality of users receive the method for data service under same channel ".
So far, realized a kind of method of brand-new play stream media data, use method of the present invention, it is transmission identical data in many places on PDCP, RLC and the MACD in the pairing L2 resource of each user that this stream medium data no longer needs RNC, thereby has alleviated the processing load in the RNC.
As everyone knows, UE has when connection with network side, and UE has four kinds of states again, is respectively CELL_DCH state, CELL_FACH state, CELL_PCH state and URA_PCH state.Wherein, under the CELL_DCH state, system can distribute a dedicated channel to UE, is used for the transfer of data of big flow.If the activity of UE reduces, data quantity transmitted obviously reduces, and system will transfer the state of UE to the CELL_FACH state; At this moment, UE can only use common signal channel and system communication, last behavior Random Access Channel (RACH), following behavior FACH, all scheduling transmissions on common signal channel of the data of each UE.If the activity of UE reduces again, system will transfer the state of UE to the CELL_PCH state.At this moment, UE can only monitoring seek channel, and can not carry out any transfer of data.The state that activity is minimum is the URA_PCH state.
Among the present invention, UE is the receiving stream media data on FACH, thereby the UE that is in the receiving stream media data described in the present invention is under the CELL_FACH state.
As can be seen, after adopting the method for above realization play stream media data, descending stream medium data no longer takies the L2 resource in the RNC, at this moment, L2 resource in the RNC only is responsible for transmitting minute quantity data such as cell update, periodic location update, thus, can further the L2 resource be discharged, to solve user's face inadequate resource problem in the RNC better.When having interaction demand, user and network side rebuild the L2 passage again.Why feasible discharge the L2 resource, is because the situation that needs to rebuild is considerably less, even and to rebuild the required mutual time also very short.
Specify the method that discharges the L2 resource below.Referring to Fig. 2, Figure 2 shows that the schematic flow sheet that discharges the L2 resource.In this example, the L2 resource among the RNC represents that with RNC-L2 the L3 resource among the RNC is represented with RNC-L3.
Step 201~204, UE sets up the RRC signaling with RNC-L3 and is connected, set up PS territory RAB (RAB with CN, Radio Access Bearer) activate PDP and connect, afterwards, UE and RNC-L2 finish real-time stream media protocol (RTSP, Real time streaming protocol) after mutual, normal receiving stream media data, at this moment, UE has been in the CELL_FACH state.
So far, UE and network side have been finished the mutual of streaming media service agreement, and are in the state of receiving stream media data.
Step 205~207, whether RNC-L3 finishes with all of UE end mutual according to Radio Link control (RLC) entity, judge whether the current L2 state of UE of receiving stream media data is stablized, specific implementation is: RNC-L3 sends the stable state Query Information to RNC-L2, and the indication self that receives from RNC-L2 is in stable state or astable inquiry response.
If RNC-L3 receives the inquiry response that is designated as stable state, after then RNC-L3 further obtains and preserves from this inquiry response and is used to rebuild the information of L2, discharge the shared L2 resource of UE, simultaneously, MACC example in the RNC is preserved temporary transient sign of wireless network and the pairing L3 information of this UE that is used to discern UE, prepares against when rebuilding and uses; Be designated as astable inquiry response if RNC-L3 receives, then RNC-L3 waits for one default period, and whether the state that rejudges L2 is stable.
Above-mentioned wireless network temporarily is designated: cell-radio network temporarily identifies (C-RNTI).For the RLC entity of replying (AM) pattern, the above-mentioned information that is used to rebuild L2 is meant: VtS, VrR, TxRsn, RxRsn, (this information is predetermined parameter in the w agreement); For the RLC entity of non-replying (UM) pattern, the above-mentioned information that is used to rebuild L2 is meant: VtUs, VrUs, (this information is predetermined parameter in the w agreement).
So far, the L2 resource is released, thereby has further alleviated the processing load of RNC, and has discharged the user's face resource in the RNC.If exist the UE that has been released the L2 resource initiatively to require the demand mutual, then carry out following operation with network side.
Step 208~213, UE initiatively sends solicited message, and this solicited message need be uploaded by layer 2 passage, and this solicited message can be the request that UE require to finish the receiving stream media data, or the periodic location update request initiatively initiated of UE.After MACC in the RNC receives solicited message from UE, the wireless network that obtains this UE temporarily identifies, after determining that the pairing L2 of this UE has disconnected connection, whether inquire about in the temporary transient identification list of self having preserved of the wireless network that is released the L2 resource exists this wireless network temporarily to identify, if exist, illustrate that then this UE is a CMB user, at this moment, the L2 resource that the MACC indication RNC-L3 corresponding with this sign rebuilds this UE.If there is no, then MACC directly abandons the information that receives.
After RNC-L3 receives and rebuilds the L2 indication, according to the information that is used to rebuild L2 of having preserved, rebulid UE and is connected with L2 between the RNC, specifically method for building up is same as the prior art.
At this moment, the state of UE can be moved to the CELL_DCH state according to the needs of transmission data, perhaps still is retained in the CELL_FACH state.And UE is by RNC and CN network interaction corresponding data.
So far, the L2 resource that has discharged is rebulid again, and by normal use.When the L2 resource is in idle condition and stablizes, can discharge the L2 resource once more, detailed process is as follows:
Step 214~216, whether RNC-L3 finishes with all of UE end mutual according to the RLC entity, judge whether the current L2 state of UE of receiving stream media data is stablized, if it is stable, after then RNC-L3 preserves and is used to rebuild the information of L2, discharge the shared L2 resource of UE, simultaneously, the MACC example in the RNC is preserved temporary transient sign of wireless network and the pairing L3 information of this UE that is used to discern UE; If unstable, after RNC-L3 waited for one default period, whether the state that rejudges L2 was stable.
Like this, both can guarantee not influence the user and network has normal use L2 under the mutual situation, further alleviate the RNC internal loading again, and can solve user's face inadequate resource problem in the RNC.
Have again, after the L2 resource in the RNC is released, when UE initiates cell update, network side also might need by photos and sending messages under the L2, promptly after L3 receives the information that reports by Common Control Channel (CCCH, CommonControl Channel), need issue response message by L2.Detailed process is:
After L3 receives the information that reports by the CCCH channel, judge whether the UE that receives the cell update response message has disconnected L2 and connected, if, according to the information that is used to rebuild L2 of having preserved, rebulid UE and be connected, connect by this L2 the cell update response message is issued down with L2 between the RNC.Afterwards, after the L3 entity judges that the current L2 of this UE is in stable condition, after preservation is used to rebuild the information of layer 2 once more, discharge the shared L2 resource of UE.Simultaneously, MACC preserves temporary transient sign of wireless network and the pairing L3 information of this UE that is used to discern UE again.
Correspondingly, when called, L3 can judge also whether this called UE has disconnected L2 and connected at UE, if, according to the information that is used to rebuild L2 of having preserved, rebulid UE and is connected with L2 between the RNC, connect the realization normal call by this L2.End of conversation, and after the L3 entity judges that the current L2 of this UE is in stable condition, preserve once more be used to rebuild the information of layer 2 after, discharge the shared L2 resource of UE.Simultaneously, MACC preserves temporary transient sign of wireless network and the pairing L3 information of this UE that is used to discern UE again.
Because L2 discharges and rebuilds just RNC internal process processing, so the correctness of its enforcement and flow process deadline are very guaranteed.Therefore, after L2 was released, the various of user and network side can not be affected by reconstruction alternately.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a method that realizes play stream media data is characterized in that, this method may further comprise the steps:
After setting up control connection according to existing mode between wireless access network RAN and the streaming media server, streaming media server is sent to radio network controller (RNC) with stream medium data, by RNC the stream medium data that receives is sent to and the public MACC example of the corresponding medium access control in each sub-district; Each MACC example is mapped to forward access channel FACH with stream medium data and issues after the stream medium data that receives is carried out format analysis processing;
After user terminal UE and network side are finished the streaming media service protocol interaction, receiving stream media data on FACH.
2. method according to claim 1, it is characterized in that, after described user terminal UE and network side are finished the streaming media service protocol interaction, and when being in the state of the last receiving stream media data of FACH, this method further comprises: whether the layer 3 in the RNC is finished with all of UE end mutual according to Radio Link control RLC entity, whether the UE that judges the receiving stream media data is current stable in shared layer 2 state of resources of RNC side, if it is stable, after then layer 3 is preserved and is used to rebuild the information of layer 2, discharge shared layer 2 resource of UE, simultaneously, the MACC example is preserved temporary transient sign of wireless network and the pairing layer of this UE 3 information that are used to discern UE, otherwise after layer 3 was waited for one default period, whether the state that rejudges layer 2 was stable.
3. method according to claim 2, it is characterized in that, after shared layer 2 resource of described release UE, initiate cell update if be released the UE of layer 2 resource, the cell update response message that network side issues passes for 2 times by layer, and then this method further comprises:
Layer 3 receives the information that UE reports by Common Control Channel CCCH channel, judge whether the UE that receives the cell update response message has disconnected layer 2 and connected, if, according to the information that is used to rebuild layer 2 of having preserved, the layer 2 that rebulids between UE and the RNC is connected, by these layer 2 connections the cell update response message is issued down;
Afterwards, after layer 3 judges that the current layer of these UE 2 is in stable condition, preserve once more be used to rebuild the information of layer 2 after, discharge shared layer 2 resource of UE, simultaneously, the MACC example is preserved temporary transient sign of wireless network and the pairing layer of this UE 3 information that are used to discern UE again.
4. method according to claim 2 is characterized in that, after shared layer 2 resource of described release UE, if the UE that has been released layer 2 resource when called, this method further comprises:
Layer 3 judges that whether having disconnected layer 2 as called UE connects, if according to the information that is used to rebuild layer 2 of having preserved, rebulid UE and is connected with layer 2 between the RNC, by these layer 2 connection realization normal calls;
Behind the end of conversation, after layer 3 judges that the current layer of these UE 2 is in stable condition, preserve once more be used to rebuild the information of layer 2 after, discharge shared layer 2 resource of UE, simultaneously, the MACC example is preserved temporary transient sign of wireless network and the pairing layer of this UE 3 information that are used to discern UE again.
5. method according to claim 2, it is characterized in that, after shared layer 2 resource of described release UE, if the mutual and mutual informational needs of the UE active request that has been released layer 2 resource and network side is connected when uploading by layer 2, this method further comprises:
The MACC example receives the solicited message from described UE, the layer 2 of determining this UE connect do not exist after, the wireless network that obtains this UE temporarily identifies, whether inquire about in the temporary transient identification list of self having preserved of wireless network that is released layer 2 resource exists this wireless network temporarily to identify, if exist, then indication layer 3 layer 2 of rebuilding this UEs corresponding with this sign connect; If there is no, directly abandon the information that receives.
6. method according to claim 5 is characterized in that, the solicited message from UE that described MACC example receives is the request that UE require to finish the receiving stream media data, or the periodic location update request initiatively initiated of UE.
7. method according to claim 2 is characterized in that, the wireless network that described MACC example is preserved is used to discern UE temporarily is designated: cell-radio network temporarily identifies C-RNTI.
8. method according to claim 2 is characterized in that,
For the RLC entity of replying the AM pattern, the information that described layer 3 is preserved is used to rebuild layer 2 is: VtS, VrR, TxRsn, RxRsn;
For non-RLC entity of replying the UM pattern, the information that described layer 3 is preserved is used to rebuild layer 2 is: VtUs, VrUs.
9. method according to claim 1 is characterized in that, described MACC example comprises the format analysis processing that the stream medium data that receives carries out: realize the fragmentation feature of the non-UM of replying pattern RLC, add the rlc protocol head; Add the MAC protocol header.
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KR20050100862A (en) * | 2004-04-16 | 2005-10-20 | 삼성전자주식회사 | Method for the setting of target channel type filed of new logical channel for mbms in mobile communication |
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