CN100366099C - Method of enabling multiple users to receive data services in the same channel - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
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- H04W72/121—Wireless traffic scheduling for groups of terminals or users
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- H—ELECTRICITY
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Abstract
The present invention provides a method for enabling a plurality of users to receive data services in the same communication channel, which is characterized in that multicast communication is realized in an R99 network by means of a new G-RNTI type introduced for a UE-Id type domain, namely that the data services are loaded in a multicast mode. Thereby, the data services are received in the same communication channel by the users. In addition, because the length of a Group-Id of a G-RNTI for discriminating different multicast groups can be changed in a dynamic mode, different multicast groups can have different user numbers according to actual requirements. By using the method, a retaining domain is fully used, and a G-RNTI message does not need to be matched on UE through an RRC message, which has no influence on the existing R99 idle protocol. Only a small amonut of modification is made at the receiving part of the UE, namely that the data services can be loaded in a multicast mode. The present invention has good compatibility with the existing R99 network, and can be simply realized and easily operated.
Description
Technical field
The present invention relates to 3-G (Generation Three mobile communication system), be meant the method that in 3GPP R99 network, makes a plurality of users under same channel, receive data service especially.
Background technology
In existing 3GPP R99 network,, particularly can user's various demands have been satisfied for the user provides various data services for the user provides multiple business.As use mobile phone and watch that the streamium TV business is exactly one of data service of providing of existing 3GPP R99 network.
Above-mentioned data service normally realizes by dedicated channel, watches that to use mobile phone the streamium TV business is an example, specifies the implementation procedure of data service below.
As everyone knows, in third generation communication system, subscriber equipment (UE) has two patterns usually, and the one, idle (IDLE) pattern, the just holding state of often saying; The one, Radio Resource control (RRC) pattern, under this pattern, UE has RRC to be connected with network side.Under the RRC connection mode, 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, when data quantity transmitted obviously reduced, system can transfer the state of UE to the CELL_FACH state.Under CELL_FACH, UE can only use common signal channel and system communication, last behavior Random Access Channel (RACH), following behavior forward access channel (FACH), all scheduling transmissions on common signal channel of the data of each UE.In this state, the transfer of data that is fit to smallest number.When if the activity of UE reduces again, system can transfer the state of UE to CELL_PCH.For under kind of the situation, 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.In this state, UE also can only monitoring seek channel.
Wherein, when UE was in the CELL_FACH state, up Dedicated Control Channel (DCCH), Dedicated Traffic Channel (DTCH) were mapped on the RACH, and descending DCCH, DTCH are mapped on the FACH.
The information that UE receives is carried by medium access control (MAC) message, and the structure of the protocol Data Unit (PDU) of medium access control (MAC) is as shown in table 1:
Table 1
Comprise MAC head (MAC header) and medium access control service data unit (MAC SDU) two large divisions in the structure of MAC PDU, wherein, comprise four parts again at MAC header, it is respectively destination channel type field (TCTF), user ID type (UE-Id type) territory, user ID (UE-Id) territory and the C/T territory that is used to distinguish the Different Logic channel.The TCTF territory is used to indicate the type of common logical or has not used dedicated logical channel, UE-Id type territory is used to indicate the type of the message that passes, the UE-Id territory is used for identifying user, and the C/T territory is used to distinguish different logic channels, the different business of carrying on the different logic channels.MAC SDU territory is used for bearing bed three and above business datum.
In existing Release 1999, defined the length in above-mentioned UE-Id type territory, specifically referring to table 2:
| UE-Id Type field (2 bits) | UE-Id Type |
| 00 | U-RNTI |
| 01 | C-RNTI or DSCH-RNTI |
| 10 | Reserved |
| 11 | Reserved |
Table 2
UE-Id type territory accounts for 2 bits (bit), wherein, 00 represents Utran Radio Network Temporary Identifier (U-RNTI), it is used for distinguishing different UE in a RNC, on behalf of cell-radio network, 01 temporarily identify (C-RNTI) or the DSCH Downlink Shared Channel wireless network temporarily identifies (DSCH-RNTI), wherein, C-RNTI is the sign that network side is distributed to UE, be used for being in the identifying cells different user of RRC pattern, DSCH-RNTI is used for distributing the different UEs of DSCH channel in a sub-district, all the other promptly 10 and 11 are the reservation territory for keeping the territory.
Stipulated the length of UE-Id in the table 2 in existing Release 1999, concrete length is as shown in table 3:
| UE-Id type | Length of UE-Id field |
| U-RNTI | 32 bits |
| C-RNTI | 16 bits |
| DSCH-RNTI | 16 bits |
Table 3
Each UE is assigned with different C-RNTI and U-RNTI, and the UE that is in the CELL_FACH state receives data on FACH, and detailed process is:
UE is after the FACH channel receives MAC PDU, at first parse the type of logic channel according to the TCTF territory, detect this message according to UE-Id type territory and UE-Id territory again and whether send to self, if, then according to the channel receiving information of indicating in the C/T territory, and the continuation subsequent treatment, if not then abandoning this message.
The method whether message that above-mentioned inspection receives sends to self is: if the information of the U-RNTI that the U-RNTI information in used U-RNTI of being designated of UE-Id type territory indication and the UE-Id territory and this UE have obtained from network side conforms to, if or the information of the C-RNTI that obtained from network side of the C-RNTI information in used C-RNTI of being designated of UE-Id type territory indication and the UE-Id territory and this UE conforms to, then this message sends to self.
By above-mentioned processing, UE has received the data service from network side.By above-mentioned implementation procedure as can be seen: each MAC PDU can only be received by a UE, this is because spelt out the reception user by UE-Id type territory and UE-Id territory, and each user channel that all can take a special use receives above-mentioned data service like this.Specifically, when the user need teleview by mobile phone, need set up special-purpose passage for each user, even there are a plurality of users to select same TV programme simultaneously in the same sub-district, still will be for each user to set up special passage, this is determined by existing reception programme.Also just therefore, existingly watch that by mobile phone the expense of streamium TV business is higher.
The defective of such scheme is: use existing receive mode, same data are sent repeatedly probably simultaneously, have greatly wasted resource, and resource utilization is low, and then the number that inserts the user also is restricted.
In 3GPP R99 network, though can realize cell broadcaste service, this broadcasting only limits to bearer messages class business, can not bearing data service.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of method that makes a plurality of users under same channel, receive data service, data service can be carried in the mode of multicast.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that makes a plurality of users under same channel, receive data service, be provided in the user ID type UE-Id type territory in the protocol Data Unit PDU of MAC representing that institute's photos and sending messages is that the multicast wireless network of multicast temporarily identifies G-RNTI, include the group id Group-Id that is used to distinguish different multicast groups among this G-RNTI; The parameter that in the reservation territory in UE-Id type territory, is provided for indicating described G-RNTI; Cell-radio network that network side distributes for user terminal UE is set temporarily to identify and comprises group id Group-Id information among the C-RNTI; This method may further comprise the steps:
After network side receives service request from UE,, and will send to UE for the information of being distributed for this UE distributes C-RNTI and the sign of the logic channel reserved;
UE receives the MAC PDU from network side, the information that parses the UE-Id type territory among this MAC PDU is indicated in the UE-Id territory to behind the G-RNTI, each UE obtains the Group-Id information this G-RNTI respectively in the UE-Id territory, and it is identical to judge the Group-Id that this Group-Id and network side distributed among the C-RNTI of self, and after the Logic Channel Identifier that the Logic Channel Identifier of indicating among this MAC PDU and network side have been distributed to self conforms to, from the data traffic information of this logic channel reception, otherwise do not process from network side.
Preferably, described multicast wireless network temporarily identifies and also includes length mark Length among the G-RNTI, and the length of Length is a fixed value, the length of described Group-Id is to determine according to the number of multicast group to be divided, and indicated length is the length that the total length of whole G-RNTI deducts Group-Id among the described Length;
The length of user's sign UE-Id-in-Group information is predefined in the group among the described C-RNTI, and the length of the Group-Id information among the described C-RNTI is that the total length of C-RNTI deducts resulting length value after the length of UE-Id-in-Group.
Preferably, the described method of obtaining Group-Id from G-RNTI is: obtain the length information of Group-Id according to the information in the Length territory among the G-RNTI, obtain Group-Id information among this G-RNTI according to this length information again.
Preferably, the total length of described G-RNTI is 16 bits, and described length according to the definite Group-Id of the number of multicast group to be divided is the value between 4 to 12 bits, and the regular length of described Length information is 4 bits.
Preferably, the length L ength of the UE-Id-in-Group among described definite C-RNTI
UE-Id-in-GroupMethod be: at first determine the maximum number of user MaxUserNum in the multicast group, then, according to the maximum number of user MaxUserNum in the multicast group greater than 2 (Length
UE-Id-in-Group-1) power, and the maximum number of user MaxUserNum in multicast group is smaller or equal to 2 Length
UE-Id-in-GroupPower is determined the length L ength of UE-Id-in-Group
UE-Id-in-Group
Preferably, described data service comprises but is not limited to streaming media service, PoC Push To Talk business.
Preferably, described UE is positioned at same sub-district.
Preferably, this method further comprises: the UE in the sub-district receives the MACPDU from network side, judge UE-Id type territory in information be C-RNTI or DSCH-RNTI, perhaps behind the U-RNTI, continue subsequent treatment according to the regulation of existing 3GPP Release 1999.
Find out that by such scheme the present invention has realized multi-casting communication by introducing new G-RNTI type for UE-Id type territory in the R99 network, promptly allow data service carry in the mode of multicast.Thereby make a plurality of users under same channel, receive data service.Have again, because the length dynamically changeable of group id Group-Id that is used to distinguish different multicast groups of G-RNTI, thereby can make different multicast groups have different numbers of users according to actual needs.Use method of the present invention, made full use of the reservation territory, do not need by RRC message to UE configuration G-RNTI information, to the existing R99 air protocol that has existed without any influence, only done minor modifications at the UE receiving unit, data service can with existing R99 network compatibility well be arranged, and realize simple to operation so that can realize carrying in the mode of multicast.
Description of drawings
Figure 1 shows that and use a plurality of users of the present invention receive data service under same channel schematic flow sheet.
Embodiment
Specify implementation of the present invention below.
Thinking of the present invention is: the multicast wireless network that is provided for identifying institute's photos and sending messages in the user ID type UE-Id type territory in the protocol Data Unit (PDU) of MAC and is multicast temporarily identifies (G-RNTI), includes the group id Group-Id that is used to distinguish different multicast groups among this G-RNTI; It is group id Group-Id information that the partial information that cell-radio network that network side distributes for user terminal UE temporarily identifies among the C-RNTI is set, and removes the sign UE-Id-in-Group information of information last behind the group id Group-Id for user in the group; Receive UE from the MAC PDU of network side, after the information of judging UE-Id type territory is G-RNTI, each UE obtains the Group-Id information among this G-RNTI respectively, and judge whether the Group-Id that this Group-Id and network side distributed among the C-RNTI of self is identical, as the identical data traffic information that then receives this from network side, otherwise do not process.
The present invention sets up one in UE-Id type territory to be used to identify institute's photos and sending messages be the parameter of multicast, this parameter is by the carrying of the reservation territory in this UE-Id type territory, and this parametric representation institute photos and sending messages is that the multicast wireless network temporarily identifies (G-RNTI) by the information of being filled out in multicast and the indication UE-Id territory.Be provided in the UE-Id territory representing that institute's photos and sending messages is that the multicast wireless network of multicast temporarily identifies (G-RNTI).Specifically referring to table 4 and table 5, table 4 is for using the definition in UE-Id type of the present invention territory, and table 5 is the length of UE-Id:
| UE-Id Type | UE-Id Type |
| field 2 bits | |
| 00 | U-RNTI |
| 01 | C-RNTI or DSCH-RNTI |
| 10 | Reserved |
| 11 | G-RNTI(*) |
Table 4
| UE-Id type | Length of UE-Id field |
| U-RNTI | 32 bits |
| C-RNTI | 16 bits |
| DSCH-RNTI | 16 bits |
| G-RNTI(*) | 16 bits |
Table 5
In table 4 and the table 5, the parameter that the present invention sets up that is that adds (*), and the length of this parameter shown in the value of this parameter shown in the table 4 and the table 5 is an embodiment only, can make amendment according to actual conditions during specific implementation, concrete value is not limited at this.
Simultaneously, the present invention has also defined the structure of G-RNTI, and the structure of this G-RNTI is as shown in table 6:
Table 6
In G-RNTI, include the group id (Group-Id) that is used to distinguish different multicast groups, and the length mark (Length) that is used to identify length, wherein, the length in Length territory is a fixed value, the length in Group-Id territory is to determine according to the number of multicast group to be divided, and indicated length is the length that the total length of whole G-RNTI deducts Group-Id in the described Length territory.Filling (Padding) territory is used to guarantee the total length of G-RNTI, and it is usually located between Group-Id territory and the Length territory, and it might not be necessary.
For example, the total length of supposing to be provided with G-RNTI is 16 bits, number of users according to the multicast group is provided with the length in Group-Id territory between 4～12 bits, the length that the Length territory is set is 4 bits, and be positioned at the least significant end of G-RNTI, be the Padding territory between Group-Id territory and the Length territory, indicated length is the total length in Length territory and Padding territory in the Length territory.When the length in Group-Id territory during less than 12 bits, there is the Padding territory, when the length in Group-Id territory equals 12 bits, there is not the Padding territory.Referring to table 7, table 7 be depicted as the length in indicated length in Length territory and Group-Id territory and the number of the multicast group that can distinguish between corresponding relation.
| Length field 4 bits | Group-Id field length | Number of Users in a group |
| 0100 | 12bit | 16 |
| 0101 | 11bit | 32 |
| ...... | ...... | ...... |
| 1100 | 4bit | 4096 |
| other | Reserved | Reserved |
Table 7
So far, be provided with this parameter of G-RNTI, and be provided with its structure.
The cell-radio network that again network side is distributed for user terminal UE temporarily identifies (C-RNTI) and defines below.
When a UE belongs to a multicast group, network side is that the C-RNTI that UE distributes comprises two parts, a part is used to distinguish different multicast groups, be designated group id (Group-Id), different user in another part is used to distinguish same group, be designated user ID (UE-Id-in-Group) in the group, the structure of this C-RNTI is as shown in table 8:
Table 8
Wherein, the maximum user number MaxUserNum that network side can be supported according to multicast group in the sub-district determines the length of UE-Id-in-Group, at this, makes the lengths table of UE-Id-in-Group be shown Length
UE-Id-in-Group, determine that specifically the length method of UE-Id-in-Group is: 2 (Length
UE-Id-in-Group-1) Length of power＜MaxUserNum＜=2
UE-Id-in-GroupPower.And in existing Release 1999, the total length of having stipulated C-RNTI is 16 bits, and therefore, it is that 16 bits deduct Length that the length of Group-Id equals total length
UE-Id-in-GroupLength after resulting value.
A UE can only belong to a multicast group, and the UE in the different multicast groups in a sub-district has different Group-Id.Each interior UE of multicast group has identical Group-Id and different UE-Id-in-Group.
According to above-mentioned setting, when realizing that a plurality of users receive data service under same channel, the processing of network side is as follows:
After network side receives request from the transmission data service of UE, in the UE-Idtype territory of MAC head, insert 11, indicating the parameter of being filled in the UE-Id territory is G-RNTI, to show that this message can be received simultaneously by a plurality of UE, in the C/T territory, write the Logic Channel Identifier of having reserved that is exclusively used in multicast service simultaneously; Because the span in C/T territory is 0 to 14, if network side is reserved 4 values, then a multicast group can be carried the multicast service of four types at most.
In the UE-Id territory of MAC head, insert the sign G-RNTI of the pairing multicast group of data service that UE asked, because G-RNTI includes Group Id information, and different its GroupId of multicast group is different, and therefore, the G-RNTI of the pairing multicast group of each data service is different.
Figure 1 shows that and use a plurality of users of the present invention receive the user side of data service under same channel handling process schematic diagram.In the present embodiment, after network side receives service request from UE, distributed C-RNTI for this UE and the sign of the logic channel reserved, and will send to UE for the information of being distributed; UE has also preserved network side and has been the C-RNTI of its distribution and the Logic Channel Identifier that is used for multicast service.
Step 105 is left intact.
Because the message that issues of network side is no longer at some users, but at a certain group of user, thereby realized that a plurality of users receive data service under same channel, promptly in the R99 network, make data service realize the bearing mode of multicast.
The above data service comprises but is not limited to streaming media service and PoC (Push To Talk) business.
Use said method,, also can in the R99 network of supporting above-mentioned functions, normally use, thereby the present invention there is compatibility well with prior art even UE does not support above-mentioned functions.
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 (8)
1. method that makes a plurality of users under same channel, receive data service, it is characterized in that, be provided in the user ID type UE-Id type territory in the protocol Data Unit PDU of MAC representing that institute's photos and sending messages is that the multicast wireless network of multicast temporarily identifies G-RNTI, include the group id Group-Id that is used to distinguish different multicast groups among this G-RNTI; The parameter that in the reservation territory in UE-Id type territory, is provided for indicating described G-RNTI; Cell-radio network that network side distributes for user terminal UE is set temporarily to identify and comprises group id Group-Id information among the C-RNTI; This method may further comprise the steps:
After network side receives service request from UE,, and will send to UE for the information of being distributed for this UE distributes C-RNTI and the sign of the logic channel reserved;
UE receives the MAC PDU from network side, the information that parses the UE-Id type territory among this MAC PDU is indicated in the UE-Id territory to behind the G-RNTI, each UE obtains the Group-Id information this G-RNTI respectively in the UE-Id territory, and it is identical to judge the Group-Id that this Group-Id and network side distributed among the C-RNTI of self, and after the Logic Channel Identifier that the Logic Channel Identifier of indicating among this MAC PDU and network side have been distributed to self conforms to, from the data traffic information of this logic channel reception, otherwise do not process from network side.
2. method according to claim 1, it is characterized in that, described multicast wireless network temporarily identifies and also includes length mark Length among the G-RNTI, and the length of Length is a fixed value, the length of described Group-Id is to determine according to the number of multicast group to be divided, and indicated length is the length that the total length of whole G-RNTI deducts Group-Id among the described Length;
The length of user's sign UE-Id-in-Group information is predefined in the group among the described C-RNTI, and the length of the Group-Id information among the described C-RNTI is that the total length of C-RNTI deducts resulting length value after the length of UE-Id-in-Group.
3. method according to claim 2, it is characterized in that, the described method of obtaining Group-Id from G-RNTI is: obtain the length information of Group-Id according to the information in the Length territory among the G-RNTI, obtain Group-Id information among this G-RNTI according to this length information again.
4. method according to claim 2, it is characterized in that, the total length of described G-RNTI is 16 bits, and described length according to the definite Group-Id of the number of multicast group to be divided is the value between 4 to 12 bits, and the regular length of described Length information is 4 bits.
5. method according to claim 2 is characterized in that, the length L ength of the UE-Id-in-Group among described definite C-RNTI
UE-Id-in-GroupMethod be: at first determine the maximum number of user MaxUserNum in the multicast group, then, according to the maximum number of user MaxUserNum in the multicast group greater than 2 (Length
UE-Id-in-Group-1) power, and the maximum number of user MaxUserNum in multicast group is smaller or equal to 2 Length
UE-Id-in-GroupPower is determined the length L ength of UE-Id-in-Group
UE-Id-in-Group
6. method according to claim 1 is characterized in that, described data service comprises but is not limited to streaming media service, PoC Push To Talk business.
7. method according to claim 1 is characterized in that described UE is positioned at same sub-district.
8. method according to claim 1, it is characterized in that, this method further comprises: the UE in the sub-district receives the MAC PDU from network side, the information of judging in the UE-Id type territory is C-RNTI or DSCH-RNTI, perhaps behind the U-RNTI, according to the regulation continuation subsequent treatment of existing 3GPP Release 1999.
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| CNB2005100069489A CN100366099C (en) | 2005-01-13 | 2005-01-13 | Method of enabling multiple users to receive data services in the same channel |
| PCT/CN2006/000059 WO2006074613A1 (en) | 2005-01-13 | 2006-01-13 | A method for multiple users receiving data service over the same channel |
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| CN102547592A (en) * | 2012-01-06 | 2012-07-04 | 电信科学技术研究院 | Data transmission method and device |
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| ES2883133T3 (en) * | 2006-09-13 | 2021-12-07 | Ericsson Telefon Ab L M | Methods and apparatus in a telecommunications system |
| CN101090364A (en) * | 2006-11-02 | 2007-12-19 | 华为技术有限公司 | Sending/receiving method and device for high speed downlink group access correlation channel |
| CN101242553B (en) * | 2007-02-05 | 2011-01-05 | 华为技术有限公司 | User data transmission method and device |
| CN102111829B (en) * | 2009-12-25 | 2013-06-05 | 普天信息技术研究院有限公司 | Cross-area HO method for called service in group calling |
| CN102595624B (en) * | 2011-01-17 | 2014-07-09 | 华为技术有限公司 | Scheduling method based on group, UE and base station |
| CN102958047B (en) * | 2011-08-26 | 2015-04-15 | 普天信息技术研究院有限公司 | User equipment downlink distributing and receiving method for broadband cluster communication system |
| WO2017054166A1 (en) * | 2015-09-30 | 2017-04-06 | 华为技术有限公司 | Spatial multiplexing method and equipment |
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| CN1463103A (en) * | 2002-04-09 | 2003-12-24 | 三星电子株式会社 | Appts. and method for transmitting control information of multimedia broadcasting/combined broadcasting affairs |
| US20040057387A1 (en) * | 2002-06-22 | 2004-03-25 | Lg Electronics, Inc. | Multimedia service providing method for radio mobile communication system |
| WO2004028041A1 (en) * | 2002-09-19 | 2004-04-01 | Lg Electronics Inc. | Multicast service providing method in mobile communication system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102547592A (en) * | 2012-01-06 | 2012-07-04 | 电信科学技术研究院 | Data transmission method and device |
| CN102547592B (en) * | 2012-01-06 | 2015-02-18 | 电信科学技术研究院 | Data transmission method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1805557A (en) | 2006-07-19 |
| WO2006074613A1 (en) | 2006-07-20 |
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