CN1980453A - Method for realizing mobile management connection in terminal - Google Patents
Method for realizing mobile management connection in terminal Download PDFInfo
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- CN1980453A CN1980453A CNA2005101206394A CN200510120639A CN1980453A CN 1980453 A CN1980453 A CN 1980453A CN A2005101206394 A CNA2005101206394 A CN A2005101206394A CN 200510120639 A CN200510120639 A CN 200510120639A CN 1980453 A CN1980453 A CN 1980453A
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Abstract
A data structure is set in the mobile management entity (MME) to store all mobile management connection (MMC) info of different connection management entities (CME) including the flow built by MMC on the terminal side. This method includes the following steps. (1) CME sends the business request message to MME to ask MME sending the connection management business request to the net side. (2) MME distributes the affair sign for this business according to the MMC representing different CME. (3) MME sends a building MMC request to the wireless resource control entity. This method reduces greatly the complexity of MM connection management and offers a flexible and simple realization scheme. Besides, the affair ID and the message serial number are set in the management. The different CM entity is not necessary to maintain affair ID alone.
Description
Technical field
The present invention relates to the implementation method that a kind of mobile management connects, the method that particularly a kind of mobile management of the multi-link management entity of realization in terminal connects.
Background technology
For the clearer description the present invention of energy, below some background knowledges are done some introductions.Provided the network skeleton diagram of prior art wireless access network as shown in Figure 1.Wherein, core net 61 connects wireless access network 62 and 63, for example, wireless access network 62 is a gsm system, wireless access network 63 is the UTMS system, and the UTMS system is that the set that land mobile access net can be defined as base station and wireless access controller can be connected with packet switching system GPRS among the GSM with the CN of Circuit Switching Network.One bimodulus terminal 64 can insert one of described two wireless access networks 62,63, GSM or UTMS network according to user's services selection.
Typical wireless interface people net 62 and 63 is made up of base station 14 and control unit 13 respectively.In gsm system 62, control unit is called base station controller BSC; Control section is called Radio Access Controller RNC in the UMTS system.Fig. 1 also shows core net MSC 11, and it is used for the circuit switching control of terminal; Serving GPRS Support Node SGSN 12 is used for the packet switch control of terminal.
Provided under the circuit exchange mode of prior art MM (MobilityManagement, mobile management is hereinafter to be referred as MM) connects and sets up main network entity and the protocol entity that relates in the process as Fig. 2.
In wireless network because the mobility of portable terminal has increased extra functional requirement for network and terminal, the mobility of portable terminal make its with network viability be connected and resource allocation all can be transferred to another base station from a base station.Like this in order to guarantee that portable terminal can normal enjoy network service, need be between different network entities transmission information, wherein mobile management MM and radio resource control RRC are exactly the agreement that is used in this respect.
The MM mobile management be mainly used in the mobile institute that portable terminal is provided bring management and security control, be that upper-layer service entity CM (Connection Management, connection management is hereinafter to be referred as CM) provides MM connection simultaneously; RRC is mainly used in the use of control idle wireless resource, in addition portable terminal and BSC/RNC be connected and switching etc. also is to be controlled by RRC.
The described MM agreement implementation mainly is portable terminal and MSC; The execution of RRC mainly is portable terminal and BSC/RNC.
The MM, the RRC entity that have shown mobile terminal MS among Fig. 2 are respectively to get MM entity, GMM entity and RRC entity in the mobile terminal MS; Comprise RRC entity among the RNC at network side, MM entity among the MSC, the MM entity among the SGSN.The typical implementation of described MM and RRC entity is the software module in the system, finishes the control of corresponding mobile management and Radio Resource.
The MM of user equipment (UE) side is the mobile management that realizes circuit domain herein, and the GMM of UE side is the mobile management that realizes packet switch domain.The mobility of some services of GPRS connects independent the existence, does not rely on MSC, and its relevant mobile management is carried out by SGSN at network side, is carried out by GMM in the UE side.
A typical C M business, at first need to set up being connected of a rrc layer such as the circuit domain call process with network side, on this connects, set up the RR signaling and connect (connection of Radio Resource signaling), the MM entity is set up MM and is connected on this RR signaling connects, in this MM connection, call out relevant signaling and transmit, finish call flow; Supporting that calling entity CM may initiate several MM connections under the situations of calling out more, be used to set up a plurality of callings, in Business Entity, use affairs ID to distinguish different callings, relate to the management of affairs ID in this case.
Initiate to be used for the MM connection of different business in addition for different CM entities, the management of MM connection in this case, comprise that the MM that the MM connection is set up and network side is initiated that end side is initiated is connected foundation, and the MM under two kinds of situations connects and discharges, to become complicated unusually, prior art can not be carried out effective MM connection management, and the complexity that its agreement realizes is very high.
Summary of the invention
Based on the complexity of existing MM connection management and the diversity in the implementation process, the objective of the invention is to propose a kind of implementation method of concentrated MM connection management, in order to reduce the complexity of MM connection management, the management of unified implementation process.
Technical scheme of the present invention comprises:
A kind of method that in terminal, realizes the mobile management connection, be connected for mobile management all mobile management link informations that a data structure is used to preserve different connection management entities are set in the Mobility Management Entity, described method comprises that the end side mobile management connects the flow process of setting up, and comprises step:
A: described connection management entity sends business request information to Mobility Management Entity, and the request Mobility Management Entity sends the connection management service request to network side;
B: described Mobility Management Entity is that this connection management entity distributes the connection Transaction Identifier;
C: described Mobility Management Entity sends to the Radio Resource controlled entity and sets up the mobile management connection request.
Described method, wherein, described end side mobile management connects the flow process of setting up, and also comprises step:
A1: to whether existing the connection of Radio Resource signaling to judge; If connect under the situation about existing in the RR signaling, Mobility Management Entity directly sends mobile management connection signaling data to Radio Resource control and transmits data;
B1: described Radio Resource controlled entity sends signaling data to network side, and the service request of protection connection management in the data implies and sets up the mobile management connection.
Described method, wherein, described end side mobile management connects the flow process of setting up, and also comprises step:
A2: connect under the non-existent situation in the RR signaling, described Radio Resource control is set up signaling and is connected:
A21: described Radio Resource control sends to network side and connects the request of foundation;
The radio resource control layer link establishment success of A22:RR.
Described method, wherein, described data structure comprises element:
PD: be used to represent that the mobile management of different connection management entities connects;
TI: be used to represent that the different mobile management of same connection management entity connect;
DIRECTION: be used to represent that the mobile management that network or terminal are initiated connects.
Described method wherein, comprises that also described end side mobile management connects the flow process that discharges, and comprises step:
L1: described connection management entity related business process finishes, and sends mobile management to Mobility Management Entity and connects the request of release;
M1: whether described Mobility Management Entity judgement is that local terminal is initiated by being connected of PD and TI sign, discharges the Transaction Identifier of this connection in this way, and deletion connects data;
N1:, then enter and wait for network release signaling Link State if originally be connected to last connection; Otherwise the dispose procedure of circulation above-mentioned steps.
Described method wherein, comprises that also end side connects the flow process of carrying out the data transmission based on mobile management, comprises step:
L2: described connection management entity sends and transmits the signaling data request to Mobility Management Entity, carries PD and TI in the message;
M2: whether described Mobility Management Entity is judged according to PD in the message and TI that this mobile management is connected and is existed;
N2: if there is no, then abandon this message; If exist, then send signaling data and send a request to the Radio Resource controlled entity.
Described method wherein, also comprises receiving the flow process that network side sends to the signaling data of terminal connection management entity, comprising:
L3: described Mobility Management Entity receives the data of giving the connection management entity that Radio Resource control is sent;
M3: whether the mobile management of judging PD in the signalling message data and TI sign is connected and exists, and simultaneously the sequence number in the message is carried out the legitimacy detection;
N3: the connection management entity that only under the situation that the mobile management connection exists and sequence number is legal, data is sent to the PD sign; Otherwise abandon this message.
Described method wherein, comprises that also the state transition process for the MM entity is:
When described Mobility Management Entity was managed the mobile management connection of a plurality of connection management entities at the same time, described Mobility Management Entity was that the state transition by himself realizes when using mobile management connection management data field.
Described method, wherein, when described state transition exists in the mobile management connection:
When described connection management entity sends the mobile management connection request, existed the mobile management of at least one activation to connect, described Mobility Management Entity is in the connection state of activation, for this new connection request distributes new Transaction Identifier; And send to connect and to set up request message to the Radio Resource controlled entity, state is moved into and is waited for that extra mobile management connects state of activation.
Described method, wherein, when described state transition does not exist in the mobile management connection:
Described Mobility Management Entity is in idle condition, for this new connection request distributes new Transaction Identifier, send connection request message to the Radio Resource controlled entity, enter the signaling connection of waiting for Radio Resource control and set up success status, after the RR signaling that receives the Radio Resource controlled entity is set up successfully, move into and wait for that extra mobile management connects state of activation.
A kind of method that realizes that in terminal mobile management connects provided by the present invention greatly reduces the complexity of MM connection management, and the implementation of flexible and convenient is provided; Simultaneously with affairs ID and message sequence number being also placed in this management in; Different CM entities is care of transaction ID separately; Do not influence the MM connection management that has existed at the new CM entity of follow-up increase in addition yet.
Description of drawings
Fig. 1 is the network skeleton diagram of the wireless access network of prior art;
Fig. 2 sets up main network entity and the protocol entity schematic diagram that relates in the process for a MM connection of prior art;
Fig. 3 connects the state transition diagram of setting up MM entity self in the process for the inventive method at MM;
Flow chart when Fig. 4 sets up for the end side MM connection of the inventive method;
Fig. 5 is that the end side MM of the inventive method connects the flow chart when discharging;
Fig. 6 connects the flow chart that carries out the data transmission for the end side of the inventive method based on MM;
Fig. 7 is the signaling data flow process that network side sends to terminal CM entity that receives of the inventive method.
Embodiment
Below in conjunction with accompanying drawing, will carry out comparatively detailed explanation to each preferred embodiment of the present invention.
The present invention realizes in terminal in the method that mobile management connects, MM connect set up MM entity self in the process state transition diagram as shown in Figure 3,311,312 and 313 is the state transition routes when carrying out new MM connection under the situation that does not exist MM to be connected.State MM idle represents to be in idle condition, does not exist MM to connect; Wait for rr connection state representation MM entity sends the RR signaling to the RRC entity and connects and sets up request message, waits for that it responds the RR signaling and connect and set up successfully; State wait for outgoing MM connection represents that the RR signaling connects and has set up success, the MM entity waits for that MM connects and sets up success message, and the integrity mode of sending such as the CM SERVICE ACCEPT or the RRC entity of network side starts finishes message; MM connection active represents that the MM connection activates.
321 and 322 is the state transition routes when carrying out new connection under the situation of representing to exist MM to be connected; 321 migratory routes represent to exist this moment the MM that activates to connect, and the MM entity sends new MM connection request to the RRC entity.322 migratory routes are represented that MM connects and are set up successfully.
331 and 332 is only to exist under the situation that a MM is connected, and MM connects the state transition route when discharging.The 341st, connecting the state transition route that single connection discharges under the situation about existing more than a MM.
The MM connection management data and the algorithm of the inventive method, as shown in Figure 4, connect all MM link informations that a kind of data structure of design is used to preserve different CM entities in the MM entity for MM, the MM that initiates for terminal connects simultaneously, and the MM entity distributes Transaction Identifier ID for it simultaneously.
Its concrete steps end side MM as shown in Figure 4 connects the flow chart when setting up, and comprising:
Step 101: described CM entity sends business request information to the MM entity, and request MM entity sends the CM service request to network side;
Step 102: described MM entity distributes affairs ID for this business according to its PD (being used to represent that the MM of different CM entities connects);
Step 103: described MM entity sends to the RRC entity and sets up the MM connection request;
Step 104: to whether existing the connection of RR signaling to judge;
Step 201: if connect under the situation about existing in the RR signaling, the MM entity directly sends MM to RRC and connects signaling data transmission data;
Step 301 and 302 is to be connected under the non-existent situation in the RR signaling, and RRC at first sets up signaling and connects:
Step 301:RRC sends to network side and connects the request of foundation;
The rrc layer link establishment success of step 302:RR;
Step 303:RRC entity sends signaling data to network side, the service request of protection CM in the data, and the implicit MM that sets up connects.
Connect data structure for the single MM of storage in the inventive method, it unit that comprises have PD, TI and DIRECTION:
PD: be used to represent that the MM of different CM entities connects;
TI: the different MM of same CM entity connect;
DIRECTION: be used to represent that the MM that network or terminal are initiated connects.
Management for described affairs ID:
The affairs ID of different CM entities is safeguarded jointly that by the MM entity MM entity provides distribution and the realizing interface of affairs ID, comprising:
Expression in the GetTransactionId (going into to join PD), bracket is its parameter, goes into to join PD and is expressed as which CM entity distribution affairs ID, and different CM entities has different affairs ID resources, and the affairs ID of different CM entities can be identical.
FreeTransactionId (go into the adviser ID that is engaged in, go into to join PD) goes into the adviser affairs ID that ID indicates to discharge that is engaged in, and goes into to join that PD represents to discharge is the transaction resource of which CM entity.
In the concrete enforcement to the inventive method, the MM that initiates from end side connects foundation, sees also Fig. 3 and Fig. 4:
After described MM entity received the business request information of CM entity, the MM entity need be set up MM for this service request and connect; At first, the MM that will set up distributes affairs ID for connecting; Send the MM connection and set up request message, judge whether to exist the RR signaling to connect subsequently, directly enter if present and wait for that MM connects state of activation to the RRC entity; If the RR signaling connects non-existent words and enters the RR signaling and connect the affirmation state of setting up.MM connect that state of activation receives that the business request information of network side is confirmed or the integrity protection flow startup message of RRC entity after think that the MM that initiates connects and set up, enter MM and connect state of activation.Set up the affirmation state in wait RR signaling and receive that entering wait MM after acknowledge message is set up in the RR connection of RRC connects state of activation, follow-up flow process is the same.Set up successfully back MM entity notice CM entity in new MM connection, and carry the affairs id information.
The MM that initiates for network side connects foundation:
Described MM entity is after the RR signaling connects existence and do not allow to discharge the RR connection status or respond the beep-page message of network side; receive RRC entity integrity protection message or article one CM layer message; PD in the message is for this reason set up a MM with TI to be connected; sign MM is connected to network and initiates, and notice corresponding C M entity.
For CM entity signaling data receiving course, as shown in Figure 7 receive the signaling data flow process that network side sends to terminal CM entity:
Described MM entity passes through the CM entity with the CM solid data that network side sends, and carries PD and TI in the message, and the CM entity is distinguished different affairs according to TI; The MM entity need judge whether to exist MM to be connected according to PD in the message and TI before this, and the legitimacy of advice message sequence number.Its concrete steps comprise:
Step 701: described MM entity receives the data of giving the CM entity that RRC sends;
Step 702: whether the MM that judges PD in the signalling message data and TI sign is connected and exists, and simultaneously the sequence number in the message is carried out the legitimacy detection;
Step 703: the CM entity that only under the situation that the MM connection exists and sequence number is legal, data is sent to the PD sign; Otherwise abandon this message in step 704.
Send for CM entity signaling data, end side connects the flow chart that carries out the data transmission based on MM as shown in Figure 6:
The signaling data that described CM entity will send carries PD and TI and sends signaling data to the MM entity, and whether the MM entity is judged according to PD and TI that MM is connected and existed, if there is no then directly abandon message; If existence connects then judges that whether this CM entity message needs the assignment messages sequence number, is its assignment messages sequence number; MM sends the RRC entity with data subsequently, and the RRC entity sends to network side.Its concrete steps are:
Step 601: described CM entity sends and transmits the signaling data request to the MM entity, carries PD and TI in the message;
Step 602: whether described MM entity is judged according to PD in the message and TI that this MM is connected and is existed;
Step 604: if there is no, then abandon this message;
Step 603:, then send signaling data and send a request to the RRC entity if exist.
The release that in the inventive method MM is connected, as shown in Figure 5, it comprises:
Described CM entity notice MM carries out the release that MM connects, and carries PD and TI in the release message, and MM judges this connection if the MM that terminal is initiated connects, and at first discharges the affairs ID that this MM connects, and discharges corresponding M M then and connects the data field.Whether according to existing other MM connection to carry out state transition, if also exist, then the MM connection is in MM connection state of activation; If there is no other MM connect, and then enter to wait for that network discharges RR signaling connection status.
Its concrete steps as shown in Figure 5 be:
Step 501: described CM entity related business process finishes, and sends MM to the MM entity and connects the request of release;
Step 502: whether described MM entity judgement is that local terminal is initiated by being connected of PD and TI sign, and the situation of local terminal is the affairs ID that discharges this connection, deletion connection data;
Step 503:, then enter and wait for network release signaling Link State if originally be connected to last connection; Otherwise the dispose procedure of circulation above-mentioned steps.
State transition for the MM entity:
The MM that described MM entity can be managed a plurality of CM entities simultaneously connects, and comprises the situation of a plurality of MM connections of a CM entity, and the MM entity is that the state transition by himself realizes when using MM connection management data field.Connecting with MM has below existed the MM connection with two kinds of situations that do not exist MM to be connected its state transition to be described when setting up.
1, connect situation about existing for MM:
MM had existed the MM of at least one activation to connect when described CM entity sent the MM connection request, this moment, the MM entity was in the connection state of activation, be that this new connection request distributes new affairs ID this moment, send to connect and set up request message to the RRC entity, state is moved into and is waited for that extra MM connects state of activation.
2, connect non-existent situation for MM:
MM connects when non-existent, the MM entity is in the IDLE state, be that this new connection request distributes new affairs ID this moment, send connection request message to the RRC entity, enter the signaling connection of waiting for RRC and set up success status, after the RR signaling that receives the RRC entity is set up successfully, move into and wait for that extra MM connects state of activation.
The method that in terminal, realizes the mobile management connection of the present invention, because different CM entities can be set up a plurality of MM and connect and can set up MM simultaneously with a plurality of CM entities and be connected, the complexity that the management that connects to MM brings has provided a kind of concentrated MM connection management method, the MM connection management of all CM entities is unified in the MM entity, connection management is not distinguished different CM entities, connection management uses unified data and algorithm, has simplified the MM connection management.
The inventive method comprises that for different CM entities provides unified message sequence number management local terminal sends the sequence number filling of message and the inspection of network side sequence number.With unitizing of CM layer affairs ID management, the CM entity need not carry out the management of affairs ID, has further simplified the complexity of MM connection management thus.
The inventive method need not increase new MM connection management function for new CM entity after having increased new CM entity, use existing unified management mode to get final product, so its implementation flexible and convenient.
Should be understood that above-mentioned description at specific embodiment is comparatively detailed, can not be interpreted as therefore that scope of patent protection of the present invention should be as the criterion with claims to scope of patent protection restriction of the present invention.
Claims (10)
1, a kind of method that in terminal, realizes the mobile management connection, be connected for mobile management all mobile management link informations that a data structure is used to preserve different connection management entities are set in the Mobility Management Entity, described method comprises that the end side mobile management connects the flow process of setting up, and comprises step:
A: described connection management entity sends business request information to Mobility Management Entity, and the request Mobility Management Entity sends the connection management service request to network side;
B: described Mobility Management Entity is that this connection management entity distributes the connection Transaction Identifier;
C: described Mobility Management Entity sends to the Radio Resource controlled entity and sets up the mobile management connection request.
2, method according to claim 1 is characterized in that, described end side mobile management connects the flow process of setting up, and also comprises step:
A1: to whether existing the connection of Radio Resource signaling to judge; If connect under the situation about existing in the RR signaling, Mobility Management Entity directly sends mobile management connection signaling data to Radio Resource control and transmits data;
B1: described Radio Resource controlled entity sends signaling data to network side, and the service request of protection connection management in the data implies and sets up the mobile management connection.
3, method according to claim 2 is characterized in that, described end side mobile management connects the flow process of setting up, and also comprises step:
A2: connect under the non-existent situation in the RR signaling, described Radio Resource control is set up signaling and is connected:
A21: described Radio Resource control sends to network side and connects the request of foundation;
The radio resource control layer link establishment success of A22:RR.
4, method according to claim 3 is characterized in that, described data structure comprises element:
PD: be used to represent that the mobile management of different connection management entities connects;
TI: be used to represent that the different mobile management of same connection management entity connect;
DIRECTION: be used to represent that the mobile management that network or terminal are initiated connects.
5, method according to claim 4 is characterized in that, described method comprises that also described end side mobile management connects the flow process that discharges, and comprises step:
L1: described connection management entity related business process finishes, and sends mobile management to Mobility Management Entity and connects the request of release;
M1: whether described Mobility Management Entity judgement is that local terminal is initiated by being connected of PD and TI sign, discharges the Transaction Identifier of this connection in this way, and deletion connects data;
N1:, then enter and wait for network release signaling Link State if originally be connected to last connection; Otherwise the dispose procedure of circulation above-mentioned steps.
6, method according to claim 4 is characterized in that, described method comprises that also end side connects the flow process of carrying out the data transmission based on mobile management, comprises step:
L2: described connection management entity sends and transmits the signaling data request to Mobility Management Entity, carries PD and TI in the message;
M2: whether described Mobility Management Entity is judged according to PD in the message and TI that this mobile management is connected and is existed;
N2: if there is no, then abandon this message; If exist, then send signaling data and send a request to the Radio Resource controlled entity.
7, method according to claim 4 is characterized in that, described method also comprises and receives the flow process that network side sends to the signaling data of terminal connection management entity, comprising:
L3: described Mobility Management Entity receives the data of giving the connection management entity that Radio Resource control is sent;
M3: whether the mobile management of judging PD in the signalling message data and TI sign is connected and exists, and simultaneously the sequence number in the message is carried out the legitimacy detection;
N3: the connection management entity that only under the situation that the mobile management connection exists and sequence number is legal, data is sent to the PD sign; Otherwise abandon this message.
8, method according to claim 4 is characterized in that, comprises that also the state transition process for the MM entity is:
When described Mobility Management Entity was managed the mobile management connection of a plurality of connection management entities at the same time, described Mobility Management Entity was that the state transition by himself realizes when using mobile management connection management data field.
9, method according to claim 8 is characterized in that, when described state transition exists in the mobile management connection:
When described connection management entity sends the mobile management connection request, existed the mobile management of at least one activation to connect, described Mobility Management Entity is in the connection state of activation, for this new connection request distributes new Transaction Identifier; And send to connect and to set up request message to the Radio Resource controlled entity, state is moved into and is waited for that extra mobile management connects state of activation.
10, method according to claim 8 is characterized in that, when described state transition does not exist in the mobile management connection:
Described Mobility Management Entity is in idle condition, for this new connection request distributes new Transaction Identifier, send connection request message to the Radio Resource controlled entity, enter the signaling connection of waiting for Radio Resource control and set up success status, after the RR signaling that receives the Radio Resource controlled entity is set up successfully, move into and wait for that extra mobile management connects state of activation.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101206394A CN100502555C (en) | 2005-12-09 | 2005-12-09 | Method for realizing mobile management connection in terminal |
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| CNB2005101206394A CN100502555C (en) | 2005-12-09 | 2005-12-09 | Method for realizing mobile management connection in terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009149669A1 (en) * | 2008-06-13 | 2009-12-17 | 华为技术有限公司 | Data communication method, communication system and related devices |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009149669A1 (en) * | 2008-06-13 | 2009-12-17 | 华为技术有限公司 | Data communication method, communication system and related devices |
| US8452327B2 (en) | 2008-06-13 | 2013-05-28 | Huawei Technologies Co., Ltd. | Method for data communication, system for communication and related devices |
| US8838168B2 (en) | 2008-06-13 | 2014-09-16 | Huawei Technologies Co., Ltd. | Method for data communication, system for communication and related devices |
| US9060358B2 (en) | 2008-06-13 | 2015-06-16 | Huawei Technologies Co., Ltd. | Method for data communication, system for communication and related devices |
| CN102869120B (en) * | 2008-06-13 | 2016-01-27 | 上海华为技术有限公司 | A kind of data communication method and communication system and relevant apparatus |
| US9369860B2 (en) | 2008-06-13 | 2016-06-14 | Huawei Technologies Co., Ltd. | Method for data communication, system for communication and related devices |
| US10009934B2 (en) | 2008-06-13 | 2018-06-26 | Huawei Technologies Co., Ltd. | Method for data communication, system for communication and related devices |
| US20180279392A1 (en) * | 2008-06-13 | 2018-09-27 | Huawei Technologies Co.,Ltd. | Method for Data Communication, System for Communication and Related Devices |
| US10334639B2 (en) | 2008-06-13 | 2019-06-25 | Huawei Technologies Co., Ltd. | Method for data communication, system for communication and related devices |
| US10652937B2 (en) | 2008-06-13 | 2020-05-12 | Huawei Technologies Co., Ltd. | Method for data communication, system for communication and related devices |
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| CN100502555C (en) | 2009-06-17 |
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