CN1816202A - Method for receiving short-message of user in group calling state - Google Patents
Method for receiving short-message of user in group calling state Download PDFInfo
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- CN1816202A CN1816202A CN 200510005029 CN200510005029A CN1816202A CN 1816202 A CN1816202 A CN 1816202A CN 200510005029 CN200510005029 CN 200510005029 CN 200510005029 A CN200510005029 A CN 200510005029A CN 1816202 A CN1816202 A CN 1816202A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/12—Messaging; Mailboxes; Announcements
- H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
Abstract
When network side ensures that short message is needed to send to user in group calling, the method sends the short message to the user directly through a connection if there is a connection between network side and the user. Otherwise, the method launches seeking call, and sends the short message to the user after receiving response message returned from the user. The invention discloses method for users in different modes in group calling to receive short message. The method guarantees users in group-calling can receive short message so as to prevent short messages from discarding caused by overtime. Thus, the invention raises reliability of service communication in wireless communication system.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to a kind of method that is in the receiving short-message of user in the group calling.
Background technology
Wireless trunking communication system, be called for short group system, be a kind of less expensive of growing up in recent years, command dispatching and communication system more flexibly, be widely used in units such as government bodies, energy traffic, airport harbour, industrial and mining enterprises, fire-fighting police, water conservancy and military affairs, to satisfy the needs of constituent parts intercommunication.
In the present trunked communication system, each group comprises a group ID (sign) and group call region, and wherein group call region is defined as the gang sub-district.But these information all are some when opening an account in HLR (attaching position register) and SIM (subscriber identification module) the card fix information of storage, and be unrealized to group calling user's mobile management.
The structure of group system core net has user profile among the attaching position register HLR as shown in Figure 1, comprises that this user IMSI (international mobile subscriber identity), affiliated group ID tabulate, and a common user can belong to 50 groups at most.Gateway mobile switch GMSC links to each other with external network External.Described GMSC also links to each other with the Anchor MSC of anchor mobile switching centre (anchor MSC), and described anchor MSC is in charge of and safeguards a specific VGCS (speech group calls in several business).
Relay MSC among Fig. 1 (Relay MSC) is when group call region jumps a plurality of MSC, all MSC except that anchor MSC.It between anchor MSC and the relay MSC the tree-shaped relation of one-to-many.
Have user IMSI among the Visited Location Registor VLR among the figure, and the ID of group tabulates under this user.When the user roams, just these information are copied among the corresponding VLR from user's HLR.
Comprised group ID and group call region among the Group Call Register GCR, group call region lumps together with group ID and is called group call reference.Wherein with among the continuous GCR of anchor MSC the dispatcher tabulation relevant, relay MSC tabulation, the directly actuated cell list of anchor MSC have been comprised with this group call reference.The GCR that links to each other with relay MSC has then comprised the anchor MSC address relevant with this group call reference, the cell list that this relay MSC is controlled.
When receiving that request is initiated in corresponding group calling, anchor MSC inquires about this group attribute to the GCR that is connected.Obtain the cell list under dispatcher's tabulation, relay MSC tabulation and this MSC control.And then call scheduling person, relay MSC, and the sub-district under this MSC control sets up group-calling channel, also has group calling to initiate by user in NCH (notification channel) group of notifications of each sub-district simultaneously, and indicates its group-calling channel so that user's monitoring in the group.
After relay MSC is received the group calling request of anchor MSC, also, in these sub-districts, set up group-calling channel, have group calling to initiate by user in the NCH group of notifications, and indicate its group-calling channel so that the user monitors in the group to the GCR inquiry cell list that is connected.
When initiating a group calling, one group of user in the specific region can join group calling simultaneously, and monitors the speaker.Can only there be a speaker the same time, and after the speaker had said, other user can both become the speaker by pressing PTT key (Push to talk, press-and-talk).In communication process, Any user can own decision be left midway or join in the group calling midway, and the user who enters group call region can have notice, and joins in main the calling midway.
The speaker can take the uplink group cal channel, monitors descending group-calling channel simultaneously; Network also can distribute an independently up-downgoing dedicated channel separately for the speaker.But the hearer in the group calling only can monitor descending group-calling channel.
In mobile communications network, short message is to be carrier with the No.7 nation-wide Network, the Word message of transmission.The size of the information content is limited in about 70 words (140 bytes).Short message is mainly with mobile phone end-to-end transmission and reception, and the transmission between mobile phone and the Internet and be received as the master.
The mobile network generally includes voice channel and control channel two large divisions.Though short message is the same with speech transmissions and fax, is all the main value-added telecom services that GSM digital mobile cellular telecommunication network provides, short message does not take voice channel, has so not only guaranteed the quick of transmission, and has greatly reduced the communication cost.
Short message transmits by radio control channel, finishes storage and preceding rotating function through Short Message Service Center, and the amount of information of each short message is restricted to 140 bytes usually.The information (plain text) that sends out from transmit leg is stored in SMSC (Short Message Center), and then is forwarded to the purpose user terminal.Even because shutdown or other reasons and when can not receive information immediately, system still can preserve information and resend in suitable after a while with regard to meaning when receiving side terminal for this.
At present, when network when a certain user sends SMS message, corresponding processing procedure is as follows:
1, service center SC sends SMS message to the mobile network, because this user is among the group calling, learn that by VLR this user is not in connection mode this moment;
2, this user of MSC meeting paging can not receive short message owing to be in the user of group calling at present, so this user ignores this paging request;
3, network repeats repeatedly paging, and after not meeting with a response, it is current not in mobile network that this user is set, and cause value is " Absent Subscriber (user does not exist) ", and stores this SMS by SC, waits for that the user reenters network;
4, after group calling finished, if the user initiates the position renewal or point to point call is set up, then network can " reenter network " with it and be notified to SC, and SC sends to network with this SMS, and MSC sends to the user with this message;
This shows that when the user in being in group calling sends SMS, relative users reception SMS will have bigger delay.This be because, the user who is in the group calling can not receive SMS, therefore this section period must be the receive delay time before the user withdraws from group calling.In addition, after even if the user withdraws from group calling, if this user not initiatively with incident network service, for example, position renewal or newly-built point to point call etc., then the user still can't receive this short message, until the incident of appearance with network service, remains the receive delay time during this period of time.
In mobile communications network, every SMS has an effective time on SC usually, exceed described effective time after, SC then can abandon corresponding SMS.Therefore, for the SMS that sends to the group calling user be dropped very risky, cause the reliability of communicating by letter to reduce.
And technique scheme is in implementation procedure, and MSC needs repeated multiple times to do useless paging, has consumed the Radio Resource of communication system significantly.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of method that is in the receiving short-message of user in the group calling, make the user who handles in the group calling process still can receive short message in real time, improved the reliability of communication service.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of method that is in the receiving short-message of user in the group calling, comprising:
A, network side are determined and need the user in being in group calling be sent SMS message;
B, network side judge whether the user who receives described short message exists and being connected of network side, if exist, and execution in step C, otherwise, execution in step D;
C, network side send to the user who is in the group calling with described short message by described connection, and the user receives described short message;
D, network side are initiated paging to the user, and after determining being connected between user and network side, described short message are sent to the user, and the user receives described short message.
The described method that is in the receiving short-message of user in the group calling also comprises:
E, the speaker user who is in the group calling send its user ID to network side, and at the described speaker's of network side preservation user totem information;
Described step B also comprises:
Network side judges according to the user totem information of preserving whether receive described short message user exists and being connected of network side.
Described step e also comprises:
When network side when the hearer sends SMS message and do not obtain responding, among VLR Visitor Location Register VLR and the attaching position register HLR with the unreachable sign of recording user;
When the hearer obtained the uplink group cal channel, network side sent to VLR with its user ID, and VLR preserves user totem information and deletes the unreachable sign of user, notified HLR deletion user unreachable sign simultaneously, and execution in step C.
Described step e also comprises:
Be stored among the VLR Visitor Location Register VLR by the user ID of network side moving exchanging center MSC, and when the speaker in the group calling withdraws from group calling or transfers the hearer to, MSC will delete the corresponding speaker's who preserves user ID described speaker.
Described step B comprises:
Network side judges whether described user exists special-purpose the connection, if exist, and execution in step C, otherwise, execution in step D.
Described step C comprises:
Network side connects at a slow speed by special use described short message that assist control information SACCH sends to the user, and user's transmitting order to lower levels starts short message and receives the unit and receive described short message.
Described step D comprises:
D1, network side send beep-page message to the user, do not have the special-purpose speaker who connects in the group calling and receive described beep-page message, and return page-response message by the group call uplink channel to network side;
D2, network side utilize the group calling down channel that described short message is sent to the user described short message, and the user receives described short message.
Described step D1 comprises:
The user returns page-response message by the up Fast Associated Control Channel FACCH or the slow associated control channel SACCH of group-calling channel to network side.
Described step D comprises:
D3, network side send beep-page message to the user, and the user withdraws from group calling after receiving described beep-page message, and returns page-response message by random access procedure to network side;
D4, network side be special-purpose standalone dedicated control channel SDCCH for this user sets up, and by the SDCCH channel described short message is sent to the user, and the user receives described short message.
Described step D4 also comprises:
The user returns the short confirmation of receipt message that disappears by up SDCCH channel to network side;
After network side is received described acknowledge message, delete described SDCCH channel, and return in the group calling again.
Among the present invention, when described user comprises at least two transmissions and receiving element, in described step D3, the user need not to withdraw from group calling, but utilizes transmission that group calling takies and outside the receiving element other to send and receiving element returns page-response message by random access procedure to network side.
Described step D comprises:
D6, network side send beep-page message to the user, and the user receives described beep-page message and record;
D7, when user's group calling finishes, trigger position upgrades or connects sets up process, sets up being connected between user and network side, and carries out the reception of short message.
As seen from the above technical solution provided by the invention, the invention provides the implementation method of the receiving short-message of user that is in the different mode in the group calling, therefore, the present invention can guarantee that the group calling user can receive short message in time, avoid short message because of overtime situation about being dropped, thereby effectively improved the reliability of service communication in the wireless communication system.
In addition, in the present invention, MSC does not again need repeatedly to carry out insignificant paging, and therefore, the Radio Resource in the wireless communication system can also be effectively saved in realization of the present invention, thereby further improves the network service performance.
Description of drawings
Fig. 1 is the structural representation of group system core net;
Fig. 2 is the process flowchart of method of the present invention
Fig. 3 is the core processing schematic flow sheet of the method for the invention.
Embodiment
In existing mobile communication network, the user who is in the group calling comprises three kinds of different patterns, be specially: speaker and the pattern that has special use to connect, speaker but do not have special-purpose pattern and the hearer's pattern that connects, wherein, between first kind of mode user and network side special-purpose being connected arranged, then two kinds of users and network side do not have special use to be connected between then.
The present invention is just at three kinds of different mode users' characteristics separately, and the processing mode that provides each mode user that is in the group calling to receive short message makes that each user during being in group calling exhales still can receive short message in time.
The specific implementation of method of the present invention in the specific implementation process, the present invention is directed to three kinds of different mode users as shown in Figure 2, has adopted different processing procedures respectively, and concrete processing procedure comprises following treatment step:
Step 21: at first, SC sends the MSC that the short message that is in the user in the group calling sends to corresponding network side according to user ID with needs;
Step 22: described MSC judges whether the user who receives this short message has special-purpose the connection, if then execution in step 23, otherwise, need execution in step 25 or the described user of step 29 paging;
In this step, the user of this short message of reception of the different mode that is in receives the processing of short message with entering different handling procedures respectively: for the special-purpose speaker who connects is arranged, execution in step 23 and step 24 are received the processing of short message; For there not being the special-purpose speaker who connects, execution in step 25 to step 28 is received the processing of short message; And, then execution in step 29 to step 215 is received the processing of short message for the hearer;
Owing to possibly can't know whether each user is the group calling user at network side MSC, do not know the user is in specifically be in what pattern yet, described in this step, MSC can judge whether the user who receives short message has special-purpose the connection, if having, then execution in step 23, otherwise, initiate paging to described user, afterwards, will enter different handling processes for the group calling user of different mode.
For the special-purpose speaker who connects is arranged, when receiving short message, then need the processing procedure that adopts following step 23 and step 24 to describe.
Step 23: for the special-purpose speaker who connects is arranged,, neither take the uplink group cal channel, also do not monitor descending group-calling channel because independently special-purpose the connection arranged; Therefore, the described processing procedure that has the special-purpose speaker who connects to receive short message is identical with the processing procedure that common point-to-point connects receiving short-message of user;
Be the user that network side MSC sends SMS message and to described special-purpose connection arranged according to current special-purpose SACCH (the assist control channel at a slow speed) channel that connects;
Step 24: the described user who has special use to connect starts short message reception unit and receives described short message, and receives acknowledge message in up SACCH channel multiple connection last time;
It is to be arranged at being used in the subscriber equipment to receive the processing module of short message that described short message receives the unit, because it is a known technology, so be not described in detail in this.
In the present invention, the special-purpose user who connects that has who is in the group calling no longer ignores the short message that MSC sends, but changes its behavior, makes that this user can receive this short message under this state.
For there not being special-purpose speaker or the hearer who connects, when receiving short message, then need the processing procedure that adopts following step 25 to describe to step 29.Described do not have the special-purpose speaker who connects to obtain the group call uplink channel, can monitor the group calling down channel simultaneously.
Step 25: in MSC, if there be not special-purpose the connection between user and the network, then MSC thinks without exception and is not in connection mode, when need at first needing to initiate paging when the user who is not in connection mode sends SMS message, so that set up corresponding connection;
Step 26: after not having beep-page message that the special-purpose speaker who connects receives that MSC sends, utilize the up FACCH (Fast Associated Control Channel) of group-calling channel, perhaps the ACCH channel returns page-response message to network side;
Step 27: network is transferred to this user by the descending SACCH channel of group-calling channel with SMS;
Step 28: after described user successfully received described short message, the up SACCH by group-calling channel returned acknowledge message and gives network.
For the hearer in the group calling, when receiving short message, then need the processing procedure that adopts following step 29 to describe to step 214.Described hearer does not obtain the group call uplink channel, just monitors down channel.
Step 29: owing to be not in connection mode between hearer and MSC, described MSC need initiate paging to the hearer;
Step 210: the hearer withdraws from current group calling after receiving the beep-page message that MSC sends;
Step 211: carry out page response by random access procedure to network, network is set up SDCCH (special-purpose standalone dedicated control channel) for it;
Step 212: network is given this user (being the hearer) by descending SDCCH channel with short message transmission;
Step 213: after described user successfully receives described short message, then return acknowledge message to MSC by up SDCCH;
Step 214: network side is deleted described user's SDCCH channel after receiving that short message that described user returns receives acknowledge message;
Step 215: described user reads the group-calling channel configuration on the NCH channel, reenters group receive mode, promptly again as the hearer of group calling.
Among the present invention, if the user as the hearer has a plurality of transmissions and receiving element, then after receiving the beep-page message that MSC sends, can not withdraw from group calling, but set up special-purpose a connection with other transmissions outside the receiving element in addition with receiving element by the transmission that group calling takies, be used to receive the short message that network side MSC sends, and after successfully receiving described short message, delete to receiving the special use connection that this short message is set up.
Among the present invention, described hearer also can also can not withdraw from group calling after receiving the beep-page message that MSC sends, but writes down this beep-page message; And after group calling finishes, initiate processes such as position renewal or connection foundation immediately, to trigger the processing procedure that receives short message, can reduce like this because the time delay that the renewal of latent period position causes.
In addition, in group calling,, wherein comprise speaker's user ID owing to after the speaker obtains the uplink group cal channel, will send Talker Indication (speaker's indication) message to network side MSC.Therefore, among the present invention, MSC can send to described speaker's user ID VLR (VLR Visitor Location Register), and VLR is recorded as it and is in connection status.
When SC sends SMS message to this a certain speaker, in above-mentioned steps 22, network side MSC can be directly determines that according to the user ID of preserving among the VLR corresponding user exists and being connected of network side, be that Direct Recognition goes out not have the special-purpose speaker who connects in the group calling, and send SMS message to the user by group-calling channel, after receiving short message, the speaker also can directly send acknowledge message by group-calling channel.
Be specially: when the group calling user who determine to receive short message as MSC exists with being connected of network side, then described short message is directly sent to described speaker by the group calling down channel, after described speaker receives described short message, utilize the group call uplink channel to send confirmation of receipt message to network side.Like this, just, can save MSC to there not being the processing procedure that the special-purpose speaker who connects initiates paging in the group calling that is in connection status.
Do not have the special-purpose speaker who connects and discharge the uplink group cal channel and become when described, and when becoming the hearer, MSC also needs to notify VLR, VLR will delete described speaker's user ID record.
If SC sends SMS message to a certain hearer, and the hearer do not have response, and then described short message will be kept among the SC.At SC when the hearer sends SMS message and does not obtain responding, all with the unreachable sign of recording user MNRF (Mobile-Station-Not-Reachable-Flag), also be that the user is not at (Absent Subscriber) among the HLR among VLR and the HLR with the unreachable reason MNRR of recording user (Mobile-Station-Not-Reachable-Reason).
By the time the hearer obtains the uplink group cal channel, when promptly becoming the speaker by the hearer, will send TalkerIndication message, and at this moment, the user ID that MSC will this speaker sends to VLR, and VLR preserves user totem information, and triggers recovery process.The unreachable sign of VLR deletion user MNRF notifies HLR (attaching position register) simultaneously, HLR deletion user unreachable sign MNRF and the unreachable reason MNRR in family, and then notice SC user's this moment can receive short message.SC sends to MSC with short message, utilizes group calling up-downgoing channel to finish the transmission and the affirmation process of short message between MSC and described user.
In a word, the method for the invention can be followed processing procedure shown in Figure 3 the reception of the short message that is in the user in the group calling is handled in the specific implementation process, specifically comprises:
Step 31: network side is determined and need the user in being in group calling be sent SMS message;
Step 32: whether the user that network side judge to receive described short message exists and being connected of network side, if exist, and execution in step 33, otherwise, execution in step 34;
Step 33: network side sends to the user who is in the group calling with described short message by described connection, and the user receives described short message;
This step described with being connected of network side may be that the special use that the special-purpose speaker who connects is arranged in the group calling connects, also may be not have the group-calling channel that the special-purpose speaker who connects obtains;
Step 34: network side is initiated paging to the user, and after determining being connected between user and network side, described short message is sent to the user, and the user receives described short message;
This step described with network side between to be connected also can be the connection of setting up according to the paging of initiating for there not being the group-calling channel that the special-purpose speaker who connects obtains.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (12)
1, a kind of method that is in the receiving short-message of user in the group calling is characterized in that, comprising:
A, network side are determined and need the user in being in group calling be sent SMS message;
B, network side judge whether the user who receives described short message exists and being connected of network side, if exist, and execution in step C, otherwise, execution in step D;
C, network side send to the user who is in the group calling with described short message by described connection, and the user receives described short message;
D, network side are initiated paging to the user, and after determining being connected between user and network side, described short message are sent to the user, and the user receives described short message.
2, the method that is in the receiving short-message of user in the group calling according to claim 1 is characterized in that, this method also comprises:
E, the speaker user who is in the group calling send its user ID to network side, and at the described speaker's of network side preservation user totem information;
Described step B also comprises:
Network side judges according to the user totem information of preserving whether receive described short message user exists and being connected of network side.
3, the method that is in the receiving short-message of user in the group calling according to claim 2 is characterized in that, described step e also comprises:
When network side when the hearer sends SMS message and do not obtain responding, among VLR Visitor Location Register VLR and the attaching position register HLR with the unreachable sign of recording user;
When the hearer obtained the uplink group cal channel, network side sent to VLR with its user ID, and VLR preserves user totem information and deletes the unreachable sign of user, notified HLR deletion user unreachable sign simultaneously, and execution in step C.
4, the method that is in the receiving short-message of user in the group calling according to claim 2 is characterized in that, described step e also comprises:
Be stored among the VLR Visitor Location Register VLR by the user ID of network side moving exchanging center MSC, and when the speaker in the group calling withdraws from group calling or transfers the hearer to, MSC will delete the corresponding speaker's who preserves user ID described speaker.
5, the method that is in the receiving short-message of user in the group calling according to claim 1 is characterized in that, described step B comprises:
Network side judges whether described user exists special-purpose the connection, if exist, and execution in step C, otherwise, execution in step D.
6, the method that is in the receiving short-message of user in the group calling according to claim 5 is characterized in that, described step C comprises:
Network side connects at a slow speed by special use described short message that assist control information SACCH sends to the user, and user's transmitting order to lower levels starts short message and receives the unit and receive described short message.
7, according to claim 5 or the 6 described methods that are in the receiving short-message of user in the group calling, it is characterized in that described step D comprises:
D1, network side send beep-page message to the user, do not have the special-purpose speaker who connects in the group calling and receive described beep-page message, and return page-response message by the group call uplink channel to network side;
D2, network side utilize the group calling down channel that described short message is sent to the user described short message, and the user receives described short message.
8, the method that is in the receiving short-message of user in the group calling according to claim 7 is characterized in that, described step D1 comprises:
The user returns page-response message by the up Fast Associated Control Channel FACCH or the slow associated control channel SACCH of group-calling channel to network side.
9, according to claim 1,2,3,4, the 5 or 6 described methods that are in the receiving short-message of user in the group calling, it is characterized in that described step D comprises:
D3, network side send beep-page message to the user, and the user withdraws from group calling after receiving described beep-page message, and returns page-response message by random access procedure to network side;
D4, network side be special-purpose standalone dedicated control channel SDCCH for this user sets up, and by the SDCCH channel described short message is sent to the user, and the user receives described short message.
10, the method that is in the receiving short-message of user in the group calling according to claim 9 is characterized in that, described step D4 also comprises:
The user returns the short confirmation of receipt message that disappears by up SDCCH channel to network side;
After network side is received described acknowledge message, delete described SDCCH channel, and return in the group calling again.
11, the method that is in the receiving short-message of user in the group calling according to claim 9, it is characterized in that, when described user comprises at least two transmissions and receiving element, in described step D3, the user need not to withdraw from group calling, but utilizes transmission that group calling takies and outside the receiving element other to send and receiving element returns page-response message by random access procedure to network side.
12, according to claim 1,2,3,4, the 5 or 6 described methods that are in the receiving short-message of user in the group calling, it is characterized in that described step D comprises:
D6, network side send beep-page message to the user, and the user receives described beep-page message and record;
D7, when user's group calling finishes, trigger position upgrades or connects sets up process, sets up being connected between user and network side, and carries out the reception of short message.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510005029XA CN100455107C (en) | 2005-01-31 | 2005-01-31 | Method for receiving short-message of user in group calling state |
| PCT/CN2006/000143 WO2006079285A1 (en) | 2005-01-31 | 2006-01-25 | A method and apparatus for the users engaged in group call to receive short message |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510005029XA CN100455107C (en) | 2005-01-31 | 2005-01-31 | Method for receiving short-message of user in group calling state |
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| CN1816202A true CN1816202A (en) | 2006-08-09 |
| CN100455107C CN100455107C (en) | 2009-01-21 |
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| CNB200510005029XA Active CN100455107C (en) | 2005-01-31 | 2005-01-31 | Method for receiving short-message of user in group calling state |
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| CN109391911A (en) * | 2017-08-14 | 2019-02-26 | 成都鼎桥通信技术有限公司 | The SMS sending method of broadband cluster and base station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102123354A (en) * | 2011-03-30 | 2011-07-13 | 上海通号轨道交通工程技术研究中心有限公司 | Group calling method based on digital trunking communication system |
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| CN1208976C (en) * | 2002-04-15 | 2005-06-29 | 华为技术有限公司 | Terminal short message point-to-multiple points group sending method |
| US7664506B2 (en) * | 2003-01-09 | 2010-02-16 | Eads Secure Networks Oy | Arrangement and method for capacity management in communication system |
| US20040249949A1 (en) * | 2003-03-27 | 2004-12-09 | Christophe Gourraud | Voice and multimedia distribution using Push-To-Talk (PTT) subscribers' group |
-
2005
- 2005-01-31 CN CNB200510005029XA patent/CN100455107C/en active Active
-
2006
- 2006-01-25 WO PCT/CN2006/000143 patent/WO2006079285A1/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109391911A (en) * | 2017-08-14 | 2019-02-26 | 成都鼎桥通信技术有限公司 | The SMS sending method of broadband cluster and base station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100455107C (en) | 2009-01-21 |
| WO2006079285A1 (en) | 2006-08-03 |
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