CN102014365A - Method and system for selecting core network operator from radio network sharing - Google Patents
Method and system for selecting core network operator from radio network sharing Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W48/18—Selecting a network or a communication service
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Abstract
The invention discloses a method for selecting a core network operator from radio network sharing. The method comprises the following steps that: user equipment (UE) initiates position updating; and a media gateway (MGW) receives and analyzes a position updating request transmitted from a radio network controller/base station controller (RNC/BSC) and selects a mobile switching center server (MSCS) according to an analyzed user identity. The invention also discloses a system for selecting the core network operator from the radio network sharing. Through the method and the system, the MGW is connected with the RNC and/or the BSC, so that the function for selecting an MSC node, namely a NAS node selection function (NNSF) for a user is realized, and an access network side does not need to be reconstructed, namely the radio network sharing can be realized and amending or debugging only needs to be performed on a core network side if needed to ensure great convenience.
Description
Technical field
(Second Generation, 2G) (3rd-Generation, 3G) mobile communications network technology of sharing are meant the shared middle method and system of selecting core network operators of a kind of wireless network especially for the mobile communications network and the third generation to the present invention relates to the second generation.
Background technology
(Wideband Code Division Multiple Access, WCDMA) the network technology of sharing in the network are a kind of technology that can allow to share between the heterogeneous networks operator a part of WCDMA network element in the Wideband Code Division Multiple Access (WCDMA) access.The current multiple network solution scheme shared that exists, wherein a kind of important network sharing mode is built independently core net respectively for each operator, but share wireless access network (RadioAccess Network, RAN) and frequency range.This network sharing mode relates generally to mobile switching centre pond (the Mobile Switching Center Pool that introduces in 3GPP TS 23.236 standards, MSC POOL) MOCN (Multi-Operator CoreNetwork, MOCN) networking mode of introducing among networking mode and the 3GPP TS 23.251.In addition, described sharing mode is equally applicable to TD SDMA and inserts (Time Division-Synchronous Code Division Multiple Access, TD-SCDMA) network.
The introducing of MSC POOL networking mode, (Radio NetworkController RNC) can only be by the relation of a core net node MSC control, and a RNC can insert a plurality of MSC to have broken in the past radio network controller, these a plurality of MSC can form a pond, are called MSC POOL; The wireless zone of all RNC administrations becomes the coverage of MSC POOL under this MSC POOL, and concrete networking schematic diagram can be referring to Fig. 1, and RNC1, RNC2 and RNC3 all can insert MSC1 or MSC2 or MSC3 respectively.
When the user roamed into the coverage of MSC POOL first, (User Equipment UE) can initiate position updating process to subscriber equipment, and RNC then can be according to specific principle, and for example load balancing is for the user distributes a MSC.This MSC then can be when position updating process be finished, distribute an interim identification marking (Temporary Mobile Subscriber Identity to the user, TMSI), in TMSI, can comprise the distinctive network resource identifier of this MSC (Network Resource Identifier, NRI).Follow-up when UE uses the TMSI that contains NRI to initiate position renewal or service access process, RNC can find the MSC of the previous service of UE for this reason according to NRI.For a MSC POOL, also there is a kind of special NRI in addition, is called the empty signs of Internet resources (NULL NRI).If contain NULL NRI among the TMSI of MSC for certain user's distribution, this means the reason of this specific MSC for aspects such as network operation, load levels, do not wish that this user is resident in this MSC.Like this, when the user reused the TMSI access network that contains NULL NRI, RNC need be according to specific principle, and for example load balancing is selected MSC for the user again.This process is called the load uninstall process.
The MOCN networking mode has then defined different MSC and has been connected to same RNC, RNC share by each operator and MSC respectively by the networking mode of different operators operation.This networking mode need be realized on the basis of MSCPOOL networking, and RNC in original MSC POOL networking is selected function (the NAS Node Selection Function of MSC node for the user, NNSF), promptly in upgrading, the position select the method for core network operators to revise to some extent.
NNSF under the described MOCN networking mode specifically comprises: when the user prepares to carry out the position renewal or prepares to initiate business, UE can send initial direct-sending (Initial Direct Transfer) message and give RNC, and this moment, RNC need select MSC for the user according to different situations:
(1) when UE used the TMSI that contains NRI to insert WCDMA or TD-SCDMA network, RNC can directly find the MSC of corresponding operator according to NRI;
(2) when UE uses the TMSI that contains NULL NRI to insert WCDMA or TD-SCDMA network, RNC needs then to judge which operator NULL NRI belongs to, and in belonging to the MSC of other these operators, select a MSC, this just requires RNC can support a plurality of NULL NRI in a MSC POOL, and each NULL NRI is corresponding one by one with core network operators;
(3) do not use the TMSI access network as UE, but the user inserts and comprises core network operators sign (the Public Land Mobile communication Network-ID that the user selects voluntarily in the message, PLMN-ID) time, RNC need select a MSC in the MSC of this operator of ownership;
(4) if by above method, when RNC still can't select MSC, RNC then needed to select for UE by the route reselection process that defines in the agreement MSC of operator.
But, share in the method for the network that adopts the MOCN networking mode, need MSC and RNC to cooperate and to finish the NNSF function, RNC not all in the existing network supports this function, and at (the Base Station Controller of the base station controller in the GSM network, BSC), the description that not relevant network is shared, and still there is the demand of sharing the GSM network in operator in the practical application.In existing network, in GSM network and WCDMA network and/or TD-SCDMA network,, be the problem that operator very pays close attention to promptly how by the NNSF function in the minimum change realization network technology of sharing.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of wireless network to share the middle method and system of selecting core network operators, can under the prerequisite of not transforming gsm wireless network and WCDMA wireless network and/or TD-SCDMA wireless network, realize the NNSF function in the network technology of sharing.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of wireless network and share the middle method of selecting core network operators, described method comprises:
UE initiates the position and upgrades;
MGW receives and resolves the position updating request of sending through RNC/BSC, selects MSCS according to the user ID that parses.
Wherein, described according to user ID selection MSCS, for: when user ID is TMSI, parse NRI or NULL NRI, select MSCS according to the corresponding relation of MSCS and NRI then; When user ID is IMSI, or when not parsing NRI or NULL NRI, carry out route reselection.
Wherein, described MGW carries out route reselection, for: MGW selects any one MSCS, transmits the position updating request of initial direct-sending to it; MSCS obtains the IMSI of UE, judge whether to allow UE on this MSCS, to roam according to IMSI, when not allowing, return the renewal refuse information, MGW interception refuse information and register reject reason, new MSCS of gravity treatment sends position updating request then, allows UE to roam on this MSCS until selected MSCS, the MSCS home position upgrades success message, and MGW sends the position to UE and upgrades success message.
Wherein, described corresponding relation according to MSCS and NRI is selected MSCS, for: select MSCS according to each parameter mapping table under the MOCN networking mode that is configured on the MGW.
Wherein, each parameter mapping table under the described MOCN networking mode comprises: the corresponding relation of PLMN-ID, NULLNRI, MSCS and NRI.
Wherein, new MSCS of described MGW gravity treatment sends position updating request, also comprises: it is available to find not had MSCS when the MGW gravity treatment, and then choose the Reason For Denial that has write down and send to UE, and process ends.
The present invention also provides a kind of wireless network to share the middle system of selecting core network operators, and described system comprises: UE, RNC/BSC, MGW and MSCS, wherein,
Described UE is used to initiate the position and upgrades;
Described MGW is used to receive and resolve the position updating request of sending through RNC/BSC, selects MSCS according to the user ID that parses.
Wherein, described MGW selects MSCS according to user ID, for: when user ID is TMSI, parse NRI or NULL NRI, select MSCS according to the corresponding relation of MSCS and NRI then; When user ID is IMSI, or when not parsing NRI or NULL NRI, carry out route reselection.
Wherein, described MGW, also be used to cooperate MSCS to carry out route reselection, for: MGW selects any one MSCS, to its position updating request of transmitting initial direct-sending, selected MSCS obtains the IMSI of UE, judges whether to allow UE to roam on this MSCS according to IMSI, when not allowing, return the renewal refuse information; MGW interception refuse information and register reject reason, new MSCS of gravity treatment sends position updating request then, allows UE to roam on this MSCS until selected MSCS, and selected MSCS home position upgrades success message, and MGW sends the position to UE and upgrades success message.
Select the method and system of core network operators during wireless network provided by the present invention is shared, initiate the position by UE and upgrade; MGW receives and also to resolve the position updating request that sends through RNC/BSC, according to the user ID that parses select Mobile Switching Center Server (Mobile Switching Center Server, MSCS); So, can connect RNC and/or BSC by MGW and realize the NNSF function, thus compatible GSM network and WCDMA network and/or TD-SCDMA network.Simultaneously, adopt the solution of the present invention to need not the realization that RNC/BSC participates in the NNSF function, simplified the realization of RNC/BSC; Further, MGW and MSCS are in core-network side, and the Access Network side need not to transform, and can realize the NNSF function that wireless network is shared, and realizes simple; And, if desired the implementation procedure of NNSF function is made amendment or debug, only need carry out in core-network side, realize convenient.
Description of drawings
Fig. 1 is existing MSC POOL networking schematic diagram;
Fig. 2 is a RNC route reselection method flow schematic diagram in the existing WCDMA network;
Fig. 3 realizes the networking schematic diagram of NNSF function for the present invention utilizes MGW;
Fig. 4 shares the method flow schematic diagram of Position Updating for wireless network of the present invention;
Fig. 5 carries out the route reselection method schematic flow sheet for MGW of the present invention;
Fig. 6 shares the system configuration schematic diagram of Position Updating for wireless network of the present invention.
Embodiment
For a better understanding of the present invention, introducing RNC in the WCDMA network earlier utilizes the route reselection process that defines in the agreement to select the MSC of operator, be the concrete steps of situation in the background technology (4), as shown in Figure 2, RNC selects the step of the MSC of operator specifically to comprise:
Concrete, obtain the mode of user IMSI and can carry out according to the mode that prior art for example defines in the agreement.
Step 209, whether the CAMEL-Subscription-Information of judging UE allows this UE to roam in MSC2, if do not allow, MSC2 sends to the message that RNC carries Reroute Command information, require RNC to reselect MSC once more, and need in message, carry NAS information and the user ID IMSI that carries in the Initial UE message in the step 206;
Wherein, carried the TMSI that comprises NRI in the Reroute Complete information.
Further, when next UE initiated business or carries out position updating process, RNC then can directly determine MSC by NRI.
By above-mentioned steps as can be seen, existing NNSF function must be finished by RNC.Be divided into MSCS and media gateway (Media Gate Way at the R4 of 3GPP stage MSC network element, MGW) two network elements, therefore, the present invention utilizes MGW to realize the NNSF function, and concrete networking schematic diagram can be referring to Fig. 3, wherein, MGW1, MGW2 link to each other with MSCS3 with MSCS1, MSCS2 respectively with MGW3 in core net, MGW and then can connect different RNC or BSC has realized a plurality of BSC, and/or the network of RNC is shared.
Basic thought of the present invention is: initiate the position by UE and upgrade; MGW receives and resolves the position updating request that sends through RNC/BSC, selects MSCS according to the user ID that parses.
The technical solution of the present invention is further elaborated below in conjunction with the drawings and specific embodiments.
Fig. 4 is the method flow schematic diagram of the shared Position Updating of a kind of wireless network of the present invention, and as shown in Figure 4, described position method for updating specifically may further comprise the steps:
Concrete, UE initiates more new technological process of position by prior art, and it can be that UE enters shared region from non-shared region roaming that UE initiates the position reason for renewing, and perhaps UE carries out cross-location district roaming etc. at shared region.
Concrete, MGW receives the initial direct-sending message that comprises location update request message that the user sends through RNC/BSC, before definite purpose MSCS, MGW need parse user ID in the position updating request of initial direct-sending.When user ID was TMSI, from then on MGW parsed NRI information according to fixed bit length among the TMSI: during the NRI that supports in NRI information is MSC POOL, MGW can find purpose MSCS according to the corresponding relation of MSCS in the table 1 and NRI; During the NULL NRI that supports in NRI information is MSC POOL, MGW needs find corresponding core network operators ID according to NULL NRI in the table 1, selects MSCS according to principles such as polling, load sharings then in belonging to the MSCS of other core network operators; When NRI information was not above-mentioned two kinds of situations, MGW need carry out the route reselection process, specifically referring to the description of Fig. 5 and corresponding embodiment; When user ID was IMSI, MGW need carry out the route reselection process, specifically referring to the description of Fig. 5 and respective embodiments.
Further, in the step 402, also comprise in the process of MGW according to user ID selection MSCS:, finish position updating request to MSCS distribution initial direct-sending according to each parameter mapping table under the MOCN networking.
Concrete, at first each parameter mapping table under configuration MOCN networking mode on the MGW is as shown in table 1, comprises in the described relation table: the corresponding relation of PLMN-ID, NULL NRI, MSCS, NRI.Wherein, a PLMN-ID is only corresponding with a NULL NRI; A PLMN-ID can be corresponding to a plurality of MSCS with one; A MSCS can be corresponding to a plurality of NRI with one.
Table 1
Then, according to the user ID that parses, finish the position updating request of distributing initial direct-sending to MSCS according to the corresponding relation of table 1.
Further, MGW can connect a plurality of BSC among the present invention, and/or a plurality of MSC, seen a plurality of MSC corresponding from the angle of an independent BSC, so the land circuit of BSC can be used jointly by a plurality of MSC.The Circuit management of this moment need be finished by MGW according to prior art.
Fig. 5 carries out the route reselection method schematic flow sheet for MGW of the present invention, and as shown in Figure 5, described method specifically may further comprise the steps:
Concrete, UE and RNC/BSC set up wireless connections, send Initial Direct Transfer message then to RNC/BSC.After RNC/BSC received Initial Direct Transfer message, the Initial UE message that sends initial direct-sending was to MGW.Wherein, carry position updating request in the Initial UE message of described initial direct-sending.
Concrete, MGW can select a MSCS arbitrarily by being configured in each parameter mapping table under the MOCN networking wherein, and for example MSCS1 and to its Initial UE message of transmitting described initial direct-sending is further handled by MGW.
Further, MGW also need to monitor and MSCS between message, the Non-Access Stratum sequence number (NSD) in the continuous updating message, this sequence number are used for judging whether interactive messages has repetition or lose.
Concrete, MSCS1 sends the user ID request through MGW to UE, obtains the IMSI of UE.
Concrete, carried IMSI in the described user ID response message.
Concrete, if MGW has preserved the IMSI of UE, then skip this step, execution in step 506, if MGW does not obtain user IMSI as yet, MGW also preserves so that obtain IMSI by monitoring the message between MSCS and the RNC/BSC.
Further, be following in several one or more if the Reason For Denial value is upgraded in the position:
11:PLMN does not allow;
12: the lane place does not allow;
13: the lane place roaming does not allow;
15: do not have proper cell.
MGW need write down this Reason For Denial, and tackles this position and upgrade refuse information.If it is not above-mentioned reason that Reason For Denial is upgraded in the position, MGW need upgrade refuse information with the position of MSCS and send to UE by RNC/BSC, the user position update failure, and flow process finishes.
Concrete, MGW needs to select the MSCS of a non-selected mistake once more according to each parameter mapping table under the MOCN networking.
Further, if in the initial direct-sending message that MGW preserves, user ID is TMSI, MGW need replace with this TMSI the IMSI that obtains in the step 505, perhaps preserved the IMSI of UE among the MGW, can directly IMSI be carried in the position updating request of initial direct-sending of the described MSCS2 of sending to, can avoid the new MSC that selects to obtain user IMSI from UE once more like this.The MGW up-to-date NSD that need preserve in addition revises the NSD information in the position updating request of the initial direct-sending of preserving.
Concrete, the corresponding aforesaid 11:PLMN of Reason For Denial does not allow.
Step 510～step 514, the Reason For Denial that the MGW record is new, and then select new MSCS to send position updating request, and not existing under the situation of upgrading Reason For Denial, the MSCS home position upgrades success message, and MGW sends the position to UE and upgrades success message.
Further, if MGW finds not had MSCS when reselecting MSCS available, then user position update failure, MGW need choose in the Reason For Denial that has write down topmost one and sent to UE this moment, the MSCS reuse adoption process finishes, and finish position more new technological process.Wherein, described topmost one can be screened according to preset rule, and for example: occurrence number is maximum, perhaps formulates according to the actual conditions of network.
Further, when MSCS need pass through IMSI paging UE, can comprise the overall identification (Global CN ID) of this MSCS in the beep-page message, MGW needs further expansion tables 1 at this moment, writes down the corresponding relation of IMSI and Global CN ID.When MGW receives the page-response message that UE sends, need find Global CN ID according to IMSI, finish according to the Global CN ID of configuration and the corresponding relation of MSCS again the message of the initial direct-sending message that comprises page-response message is distributed.
Fig. 6 is the system configuration schematic diagram that a kind of wireless network is shared Position Updating, and as shown in Figure 6, described system comprises: UE61, RNC/BSC62, MGW63 and MSCS64, and MGW63 and MSCS64 are positioned at core-network side, wherein,
Described UE61 is used to initiate the position and upgrades;
Concrete, UE61 initiates more new technological process of position by prior art, and initiating the position reason for renewing can be that UE61 enters shared region from non-shared region roaming, and perhaps UE61 carries out cross-location district roaming etc. at shared region.
Described RNC/BSC62 is used to transmit the message between UE61 and the MGW63;
Concrete, MGW can connect a plurality of BSC among the present invention, and/or a plurality of MSC, seen a plurality of MSC corresponding from the angle of an independent BSC, so the land circuit of BSC can be used jointly by a plurality of MSC.The Circuit management of this moment need be finished by MGW according to prior art.
Described MGW63 is used to receive and resolve the position updating request that sends through RNC/BSC, selects MSCS64 according to user ID;
Concrete, MGW63 receives the initial direct-sending message that comprises location update request message that the user sends through RNC/BSC62, before definite purpose MSCS64, MGW63 need parse user ID in initial direct-sending message.When user ID was TMSI, from then on MGW63 parsed NRI information according to fixed bit length among the TMSI: during the NRI that supports in NRI information is MSC POOL, MGW can find purpose MSCS64 according to the corresponding relation of MSCS64 in the table 1 and NRI; During the NULL NRI that supports in NRI information is MSCPOOL, MGW63 needs find corresponding core network operators ID according to NULL NRI in the table 1, selects MSCS64 according to principles such as polling, load sharings then in belonging to the MSCS64 of other core network operators; When NRI information was not above-mentioned two kinds of situations, MGW63 need carry out the route reselection process; When user ID was IMSI, MGW63 need carry out the route reselection process.
Further, also comprise in the process of described MGW63 according to user ID selection MSCS64:, finish position updating request to MSCS64 distribution initial direct-sending according to each parameter mapping table under the MOCN networking.
Further, described MGW63 also is used to cooperate MSCS64 to finish route reselection.
Concrete, MGW63 preserves the initial direct-sending message of receiving from RNC/BSC62; Select any one MSCS64, transmit the position updating request of initial direct-sending to it; Selected MSCS64 obtains the IMSI of UE61, and selected MSCS64 judges whether to allow UE61 to roam on this MSCS64 according to IMSI, if do not allow, then returns the renewal refuse information; MGW63 interception refuse information and register reject reason, new MSCS64 of gravity treatment sends position updating request then, allow UE61 to roam on this MSCS64 until current selected MSCS64, selected MSCS64 home position upgrades success message, and MGW63 sends the position to UE61 and upgrades success message.
Wherein, if MGW63 is when reselecting MSCS64, it is available to find not had MSCS64, then user position update failure, MGW63 need choose in the Reason For Denial that has write down topmost one and sent to UE61 this moment, and the MSCS64 reuse adoption process finishes, and finish position more new technological process.
Further, when MSCS64 need pass through IMSI paging UE61, can comprise the Global CN ID of this MSCS64 in the beep-page message, MGW63 needs further expansion tables 1 at this moment, writes down the corresponding relation of IMSI and Global CN ID.When MGW63 receives the page-response message that UE61 sends, need find Global CN ID according to IMSI, finish according to the Global CN ID of configuration and the corresponding relation of MSCS again the message of the initial direct-sending message that comprises page-response message is distributed.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. select the method for core network operators during a wireless network is shared, it is characterized in that described method comprises:
Subscriber equipment (UE) is initiated the position and is upgraded;
Media gateway (MGW) receives and resolves the position updating request of sending through radio network controller/base station controller (RNC/BSC), selects Mobile Switching Center Server (MSCS) according to the user ID that parses.
2. method according to claim 1, it is characterized in that, described according to user ID selection MSCS, for: when user ID is interim identification marking (TMSI), parse the empty signs of network resource identifier (NRI) or Internet resources (NULL NRI), select MSCS according to the corresponding relation of MSCS and NRI then; When user ID is international mobile subscriber identity (IMSI), or when not parsing NRI or NULL NRI, carry out route reselection.
3. method according to claim 2 is characterized in that, described MGW carries out route reselection, for: MGW selects any one MSCS, transmits the position updating request of initial direct-sending to it; MSCS obtains the IMSI of UE, judge whether to allow UE on this MSCS, to roam according to IMSI, when not allowing, return the renewal refuse information, MGW interception refuse information and register reject reason, new MSCS of gravity treatment sends position updating request then, allows UE to roam on this MSCS until selected MSCS, the MSCS home position upgrades success message, and MGW sends the position to UE and upgrades success message.
4. according to claim 2 or 3 described methods, it is characterized in that described corresponding relation according to MSCS and NRI is selected MSCS, for: MSCS selected according to each parameter mapping table under MOCN (MOCN) networking mode that is configured on the MGW.
5. method according to claim 4 is characterized in that, each parameter mapping table under the described MOCN networking mode comprises: the corresponding relation of core network operators sign (PLMN-ID), NULL NRI, MSCS and NRI.
6. method according to claim 3, it is characterized in that new MSCS of described MGW gravity treatment sends position updating request, also comprises: it is available to find not had MSCS when the MGW gravity treatment, then choose the Reason For Denial that has write down and send to UE, and process ends.
7. select the system of core network operators during a wireless network is shared, it is characterized in that described system comprises: UE, RNC/BSC, MGW and MSCS, wherein,
Described UE is used to initiate the position and upgrades;
Described MGW is used to receive and resolve the position updating request of sending through RNC/BSC, selects MSCS according to the user ID that parses.
8. system according to claim 7 is characterized in that described MGW selects MSCS according to user ID, for: when user ID is TMSI, parse NRI or NULL NRI, select MSCS according to the corresponding relation of MSCS and NRI then; When user ID is IMSI, or when not parsing NRI or NULL NRI, carry out route reselection.
9. system according to claim 8, it is characterized in that, described MGW, also be used to cooperate MSCS to carry out route reselection, for: MGW selects any one MSCS, transmits the position updating request of initial direct-sending to it, selected MSCS obtains the IMSI of UE, judge whether to allow UE on this MSCS, to roam according to IMSI, when not allowing, return the renewal refuse information; MGW interception refuse information and register reject reason, new MSCS of gravity treatment sends position updating request then, allows UE to roam on this MSCS until selected MSCS, and selected MSCS home position upgrades success message, and MGW sends the position to UE and upgrades success message.
10. according to Claim 8 or 9 described systems, it is characterized in that described MGW selects MSCS according to the corresponding relation of MSCS and NRI, for: MSCS selected according to each parameter mapping table under the MOCN networking mode that is configured on the MGW.
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| PCT/CN2011/077367 WO2012058944A1 (en) | 2010-11-04 | 2011-07-20 | Method and system for selecting core network operator in wireless network share |
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| CN107592974A (en) * | 2015-03-02 | 2018-01-16 | 三星电子株式会社 | Method and apparatus for providing service in a wireless communication system |
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| CN111565436A (en) * | 2020-04-15 | 2020-08-21 | 中国联合网络通信集团有限公司 | Communication method and access network equipment |
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| CN111565437B (en) * | 2020-04-15 | 2022-06-21 | 中国联合网络通信集团有限公司 | Communication method and access network equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2012058944A1 (en) | 2012-05-10 |
| CN102014365B (en) | 2015-01-28 |
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