CN1558651A - Dual mode personal handheld telephone and dual mode communication system - Google Patents
Dual mode personal handheld telephone and dual mode communication system Download PDFInfo
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- CN1558651A CN1558651A CNA200410016196XA CN200410016196A CN1558651A CN 1558651 A CN1558651 A CN 1558651A CN A200410016196X A CNA200410016196X A CN A200410016196XA CN 200410016196 A CN200410016196 A CN 200410016196A CN 1558651 A CN1558651 A CN 1558651A
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Abstract
The invention relates to a dual mode personal hand-held telephone system, which comprises a dual mode PHS mobile phone, a household base station, a public telephone network, a wireless local telephone core network and a server, wherein the household base station is connected with the public telephone network through twisted-pair lines, the PHS mobile phone can dial phone calls in PHS public networks, and can be bonded onto the household base station for standby both in PHS public network and in household base station.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to bimodulus personal hand-held phone and bimodulus communication system that personal handyphone system (PHS) and Home eNodeB (Home Station) are bound together.
Background technology
Because the limitation of present urban district personal handyphone system (developing from pas network), it is poor to reach some signals coverings from far-off regions at home, does not perhaps cover at all, and the Personal Handyphone System user does not receive the calling of oneself, can't directly breathe out yet; Sometimes promptly enable to accomplish, also because the reason of signal makes calling quality to guarantee.Existing PHS mobile phone all is to communicate by the PHS public network, has taken a large amount of public network resources.And along with being on the increase of user, the communication merchant has to enlarge message capacity, thereby has caused the increase of operation costs.
In order to address the above problem, Japan has more patent to disclose the dual-mode handset that PHS and fixed telephone service bind together, disclose 08-172666 number as Japan Patent, 09-284389 number, 10-200949 number, 2001-204077 number etc., this mobile phone can directly pass through standby of PHS public network and exhalation in the PHS public network time.After in mobile phone is gone back home, can become a cordless telephone in the telephone network that holds open switch (PSTN) by a private base station.The shortcoming of this dual-mode handset is one that mobile phone can only be in PHS public network or PSTN net to be waited for and breathes out, and when mobile phone is in the PHS public network, only receives calls by the PHS public network, and when mobile phone at home the time, can only receive calls by the PSTN net.If the PSTN net just in use, then the PHS mobile phone can't receive calls by the PSTN net, can not pass through PHS public network incoming call answering, has caused a lot of inconvenience.Another solution is for after in the PHS mobile phone is gone back home, and system transfers to the phone of PHS in the PSTN net automatically, and same, if the PSTN net just in use, phone can't correctly be shifted.
Summary of the invention
The object of the present invention is to provide a kind of bimodulus personal hand-held phone and bimodulus communication system of standby in PHS public network and Home eNodeB (HomeStation) simultaneously.
The objective of the invention is to realize by following technical method: the bimodulus personal handyphone system comprises bimodulus PHS mobile phone, be placed on the Home eNodeB of user's family, public telephone network, the Personal Handyphone System(PHS) core net, and server, Home eNodeB is connected with public telephone network by twisted-pair feeder, the PHS mobile phone can dial phone in the PHS public network, the PHS mobile phone is tied on the Home eNodeB sign indicating number, if when having only the PHS signal, mobile phone is in the PHS holding state, the signal of while timing search Home eNodeB, after family's signal of base station occurs, the PHS mobile phone can be done register flow path one time on Home eNodeB, the Home eNodeB call server, this mobile phone of announcement server has been registered to this Home eNodeB, PHS mobile phone standby in PHS public network and Home eNodeB simultaneously like this.
Bimodulus personal hand-held phone disclosed in this invention, its advantage shows: the standby in PHS public network and Home eNodeB simultaneously of bimodulus personal hand-held phone can discharge a large amount of public network resources, and improve the speech quality of PHS mobile phone.
Description of drawings
Fig. 1 opens up the benefit structure chart for bimodulus communication system of the present invention;
Fig. 2 finishes the flow chart of binding and authentication for bimodulus PHS mobile phone and Home eNodeB;
Fig. 3 is the flow chart of bimodulus PHS mobile telephone registration to the family base station;
Fig. 4 is the flow chart of the outside bimodulus PHS mobile phone of making a telephone call to;
Fig. 5 is the flow chart from the outbound calling of bimodulus PHS mobile phone;
Fig. 6 is the flow chart of cancellation registering family base station;
Fig. 7 is the superframe structure schematic diagram of public network;
Fig. 8 is the superframe structure schematic diagram of Home eNodeB;
Fig. 9 is the schematic diagram of second embodiment of the invention.
Embodiment
Below in conjunction with embodiment the present invention is further described.
See also Fig. 1, bimodulus communication system of the present invention comprises the bimodulus personal hand-held phone or is called PAS terminal 1, has telephone number 8880001 or 8880002; Be placed on the Home eNodeB (HOME STATION) 2 of user's family; Public telephone network (PSTN) 3; Personal Handyphone System(PHS) core net 4 (iPAS-core) (being the PHS public network); And I-number server 5.Home eNodeB 2 is connected with public telephone network 3 by twisted-pair feeder, and its application has a fixed telephone number 8880003, and the user can directly dial phone by Home eNodeB 2.PAS terminal 1 can dial phone by PHS public network 4 when PHS public network overlay area.After Personal Handyphone System enters family, in the coverage of Home eNodeB, PAS terminal 1 is by being tied to sign indicating number on the Home eNodeB 2, the character of I-number server 5 record PAS terminals 1 is the telephone number 8880003 of the number 8880001+ Home eNodeB 2 of PAS terminal 1, uses thereby PAS terminal 1 can be used as the wireless phone of Home eNodeB 2.Under the Home eNodeB situation of 2 free time, PAS terminal 1 can receive the phone of PHS public network 4 by Home eNodeB 2 simultaneously; Under the situation that Home eNodeB 2 hurries, PAS terminal 1 can also directly receive phone and Outgoing Calls by PHS public network 4, realizes two idle functions.PSTN net 3 is connected on the PHS public network 4 by time-division multiplex technology (TDM), and PHS public network 4 is connected with I-number server 5 by simple network signaling protocol (SNSP).If PAS terminal 1 uses as the extension set of Home eNodeB 2, when sign indicating number is bound, Home eNodeB distributes an extension number to give PAS terminal 1, and then the character of I-number server 5 record PAS terminals 1 is the telephone number 8880003+ extension number of the number 8880001+ Home eNodeB 2 of PAS terminal 1.When PAS terminal 1 received calls by the PSTN net at home, Home eNodeB 2 directly dialed phone on the PAS terminal 1 with corresponding extension number.
PAS terminal 1 with the specific implementation method of Home eNodeB 2 bindings is:
Interoffice junction by PSTN network 3 and fixed telephone subscriber hold twisted-pair feeder to pass through touch-tone signal (DTMF) and realize the PAS terminal 1 that is registered under the Home eNodeB 2 is carried out authentication, see also Fig. 2, and network configuration and flow process are as follows:
1. when PAS terminal 1 activates the service, need registration Home eNodeB business information in transaction processor (TS);
2. Home eNodeB (HS) 2 initiates network side authentication request to this PAS terminal 1 by dtmf dialing to call server CS-P;
3. after call server CS-P receives the call request of Home eNodeB 2, initiate authentication request to customer location register SLR or HLR;
Call server CS-P from HLR or SLR obtain user data and authentication parameter group (comprise random number RA ND, Result_i, Result_j);
5. call server CS-P connects the calling of being initiated by Home eNodeB 2, after speech channel is connected, call server CS-P will send on the PAS terminal 1 by Home eNodeB 2 with dtmf signal from the random number RA ND that HLR/SLR obtains, and obtain the result that this random number RA of PAS terminal 1 usefulness ND calculates by dtmf signal from Home eNodeB 2, compare with the result who obtains from HLR/SLR, confirm whether this PAS terminal 1 is validated user, and notification gateway (Parlay GW);
6. if PAS terminal 1 is a validated user, gateway (Parlay GW) is initiated the activation of service flow process to Home eNodeB application server (AS);
7. Home eNodeB application server (AS) activates this user's Home eNodeB business;
8. the user data of preserving in transaction processor (TS) synchronous gateway (GW);
9. after activation of service was finished, Home eNodeB application server (AS) sent acknowledge message to gateway, and started calling release flow process;
10. if business successfully activates, call server CS-P sends to Home eNodeB 2 and confirms sound (Confirmation Tone), otherwise sends busy tone (Busy Tone);
After 11. Home eNodeB 2 is received and is confirmed sound, call release, authorizing procedure finishes.
Mutual when adjacent when several Home eNodeB 2, can receive a plurality of Home eNodeB 2 signals in same place, because Home eNodeB 2 and PAS terminal 1 be by to the sign indicating number binding, oneself PAS terminal 1 can only be in the 2 times uses of Home eNodeB of oneself.
See also Fig. 3 to Fig. 6, during PAS terminal 1 start, can search for the signal of PHS public network 4 and Home eNodeB 2 simultaneously, and can be in the holding state that can receive PHS public network 4 and Home eNodeB 2 callings simultaneously.
If when having only the PHS signal, terminal is in the PHS holding state, signal that simultaneously can timing search Home eNodeB 2, after the signal of family base station 2 occurs, terminal can be done one time register flow path on Home eNodeB 2, at this moment Home eNodeB 2 can be initiated call to I-NUMBER server 5, has been registered to this Home eNodeB 2 by dtmf signal notice I-NUMBER server 5 these PAS terminals 1.
When this PAS terminal 1 of external call, Personal Handyphone System(PHS) core net 4 at first can arrive the registration scenarios of this PAS terminal 1 of inquiry above the I-NUMBER server 5, if be registered on the Home eNodeB 2, then can be transferred to Home eNodeB 2 to incoming call by PSTN net 3, Home eNodeB 2 is called out and is connected this PAS terminal 1, if the PSTN net of Home eNodeB 3 is busy, Personal Handyphone System(PHS) core net 4 can also be called out by PHS and be connected this PAS terminal 1.
When PAS terminal 1 is breathed out, if the 2 circuit spare time of Home eNodeB, this calling meeting is gone out by Home eNodeB 2, what the called party showed is the loCal number 8880003 of Home eNodeB 2, chargeing also is on Home eNodeB 3, if Home eNodeB 2 line be busies then should be gone out by the PHS public network automatically in the calling meeting.
When this PAS terminal 1 left Home eNodeB 2 coverages, PAS terminal 1 was done once calling to I-NUMBER server 5 by PHS public network 4, and notice I-NUMBER server 5 is cancelled the registration of this PAS terminal 1 at Home eNodeB 2.
See also the superframe structure of Fig. 7 public network, wherein BCCH is a Broadcast Control Channel, and SCCH is a signaling control channel, and PCH is a paging channel.PAS terminal 1 is in start, and the control channel that at first starts the PHS public network monitors (CCH monitor); If find the base station of public network, PAS terminal 1 enters holding state at public network, and this time, PAS terminal 1 received only oneself paging channel PCH at public network, and the gap of the paging channel of adjacent oneself is 1.2s, just the time span of a superframe; In this gap, the control channel that PAS terminal 1 can be initiated Home eNodeB monitors (CCH monitor), this hunting time approximately is 100ms, if Home eNodeB can not find, PAS terminal 1 can reenter holding state, continue to receive the paging channel PCH of oneself, if find Home eNodeB, PAS terminal 1 can receive the system information of Home eNodeB, receive complete system information time maximum demand 4.2s, in this time period, if the paging channel PCH time of reception of public network arrives, the system information that PAS terminal 1 can suspend Home eNodeB receives, and removes to receive the paging channel PCH of public network.
See also the superframe structure of Fig. 8 Home eNodeB, after the system information of family base station receives fully, PAS terminal 1 also can enter holding state at Home eNodeB, this time, PAS terminal 1 also received only the paging channel PCH of oneself at Home eNodeB, so PAS terminal 1 all receives only the paging channel PCH of oneself at public network and Home eNodeB, but the time slot between public network and the Home eNodeB is different, because their cycle is different, so when the least common multiple in their cycles, can overlap phenomenon, at this moment mobile phone can use priority algorithm, select one of them, at this moment can lose paging (paging) information, but the paging information network terminal can be sent out 3 times continuously, so can not lose phone.
If two nets all can not find, mobile phone can start a timer and sequentially do public network and Home eNodeB CCH supervision.
See also Fig. 9, mobile phone terminal would subscribe to two private network base stations, Home eNodeB and office base station, and the I-NUMBER server is registered Home eNodeB number 8880003 respectively, office's number of base stations 8880004 and mobile phone terminal number 8880001.During mobile phone terminal is got home and be registered on the Home eNodeB, the Home eNodeB dialing himself number and the number of terminal to the I-NUMBER server, I-NUMBER server modifications and the character that starts terminal are: the number 88800001+ extension of the number 8880003+ terminal of Home eNodeB (if the words that have), when receiving phone, search this two numbers.When mobile phone terminal in office and be registered on the office base station, office's base station dialing himself number and the number of terminal to the I-NUMBER server, I-NUMBER server modifications and the character that starts terminal are: the number 88800001+ extension of the number 8880004+ terminal of office base station (if the words that have), when receiving phone, search this two numbers.Like this, no matter or in office, mobile phone all can dial phone by the PSTN net, saved the resource of PHS public network greatly at home.
Claims (19)
1. bimodulus personal handyphone system, comprise the PHS mobile phone, be placed on the Home eNodeB of user's family, public telephone network (PSTN), the Personal Handyphone System(PHS) core net, and server, Home eNodeB is connected with public telephone network, the PHS mobile phone can dial phone in the PHS public network, it is characterized in that: the PHS mobile phone is tied on the Home eNodeB sign indicating number, if when having only the PHS signal, the PHS mobile phone is in the PHS holding state, the signal of while timing search Home eNodeB, after family's signal of base station occurs, the PHS mobile phone can be done register flow path one time on Home eNodeB, the Home eNodeB call server, this mobile phone of announcement server has been registered to this Home eNodeB, PHS mobile phone standby in PHS public network and Home eNodeB simultaneously like this.
2. bimodulus personal handyphone system as claimed in claim 1, it is characterized in that: during the PHS mobile phone power-on, the control channel that at first starts the PHS public network monitors, if find the base station of public network, the PHS mobile phone enters the public network holding state, this time, the PHS mobile phone received only oneself paging channel PCH at public network, and a gap of the paging channel of adjacent oneself; In this gap, the control channel that terminal can be initiated Home eNodeB monitors that if Home eNodeB can not find, the PHS mobile phone can reenter holding state, continues to receive the paging channel PCH of oneself; If find Home eNodeB, the PHS mobile phone can receive the system information of Home eNodeB, after the system information of family base station received fully, the PHS mobile phone also can enter the Home eNodeB holding state, and the PHS mobile phone receives the paging channel PCH of PHS public network and Home eNodeB simultaneously.
3. bimodulus personal handyphone system as claimed in claim 2 is characterized in that: PSTN Netcom crosses time-division multiplex technology (TDM) and is connected on the PHS public network.
4. bimodulus personal handyphone system as claimed in claim 3 is characterized in that: the PHS public network is connected with server by the SNSP agreement.
5. bimodulus personal handyphone system as claimed in claim 4 is characterized in that: Home eNodeB is connected with public telephone network by twisted-pair feeder.
6. as one of any described bimodulus personal handyphone system of claim 1 to 5, it is characterized in that: when this mobile phone of external call, the Personal Handyphone System(PHS) core net at first can arrive the registration scenarios of this mobile phone of inquiry on the server, if be registered on the Home eNodeB, then can be transferred to Home eNodeB to incoming call by the PSTN net, Home eNodeB is called out and is connected this mobile phone, if the PSTN of Home eNodeB net is busy, the Personal Handyphone System(PHS) core net can also be called out by the PHS public network and be connected this mobile phone.
7. as one of any described bimodulus personal handyphone system of claim 1 to 5, it is characterized in that: if mobile phone has been registered on the Home eNodeB, when mobile phone is breathed out, if the Home eNodeB circuit spare time, this calling meeting is gone out by Home eNodeB, if the Home eNodeB line be busy then should be gone out by the PHS public network automatically in the calling meeting.
8. as one of any described bimodulus personal handyphone system of claim 1 to 5, it is characterized in that: when this mobile phone leaves family's base station range, mobile phone is done once the calling of server by the PHS public network, and announcement server is cancelled the registration of this mobile phone at Home eNodeB.
9. bimodulus personal handyphone system as claimed in claim 1 is characterized in that: mobile phone terminal would subscribe to two base stations, Home eNodeB and office base station, and server is registered the Home eNodeB number respectively, office number of base stations and mobile phone terminal number.
10. bimodulus personal handyphone system as claimed in claim 9, it is characterized in that: during mobile phone terminal is got home and be registered on the Home eNodeB, the Home eNodeB dialing himself number and the number of terminal to server, server modifications and the character that starts mobile phone terminal are: the number of the number+terminal of Home eNodeB; When mobile phone terminal in office and be registered on the office base station, office's base station dialing himself number and the number of terminal to server, server modifications and the character that starts terminal are: the number of the number+terminal of office base station.
11. the bimodulus personal hand-held phone of personal handyphone system and Home eNodeB is characterized in that phone standby in personal handyphone system and Home eNodeB simultaneously.
12. bimodulus personal hand-held phone as claimed in claim 11, it is characterized in that: during the start of bimodulus personal hand-held phone, the control channel that at first starts the PHS public network monitors, if find the base station of PHS public network, enter the public network holding state, this time, phone received only the paging channel PCH of oneself in the PHS public network, and a gap of the paging channel of adjacent oneself; In this gap, the control channel that the bimodulus personal hand-held phone can be initiated Home eNodeB monitors that if Home eNodeB can not find, the bimodulus personal hand-held phone can reenter holding state, continues to receive the paging channel PCH of public network oneself; If find Home eNodeB, the bimodulus personal hand-held phone can receive the system information of Home eNodeB, after the system information of family base station receives fully, also can enter the Home eNodeB holding state, the bimodulus personal hand-held phone receives the paging channel PCH of PHS public network and Home eNodeB simultaneously.
13. bimodulus personal hand-held phone as claimed in claim 12, it is characterized in that: phone is in receiving complete family base station system information time section, if the paging channel PCH time of reception of PHS public network arrives, the system information that the bimodulus personal hand-held phone can suspend Home eNodeB receives, and removes to receive the paging channel PCH of public network.
14. bimodulus personal hand-held phone as claimed in claim 12, it is characterized in that: phone is simultaneously when public network and Home eNodeB are in holding state, receive its paging channel PCH simultaneously, but the time slot between the paging channel PCH is different, when the least common multiple in their cycles, can overlap phenomenon, at this moment phone can use priority algorithm, selects one of them.
15. bimodulus personal hand-held phone as claimed in claim 12 is characterized in that: if two nets all can not find, the bimodulus personal hand-held phone can start the CCH supervision that a timer is sequentially done public network and Home eNodeB.
16. the implementation method of the double-mode phone of personnel hand system and Home eNodeB, its step comprises:
1) during mobile phone power-on, the control channel that at first starts the PHS public network monitors;
2) if find the base station of public network, enter the public network holding state, this time, mobile phone received only the paging channel PCH of oneself in public network;
3) in the gap of the paging channel of adjacent oneself, the control channel that mobile phone can be initiated Home eNodeB monitors that if Home eNodeB can not find, mobile phone can reenter holding state, continues to receive the paging channel PCH of oneself;
4) if find Home eNodeB, mobile phone can receive the system information of Home eNodeB;
5) after the system information of family base station received fully, mobile phone also can enter the Home eNodeB holding state, receives the paging channel PCH of public network and Home eNodeB simultaneously.
17. method as claimed in claim 16, it is characterized in that: in receiving complete family base station system information time section, if the paging channel PCH time of reception of public network arrives, the system information that mobile phone can suspend Home eNodeB receives, and removes to receive the paging channel PCH of public network.
18. method as claimed in claim 16, it is characterized in that: after mobile phone enters public network and Home eNodeB holding state, receive its paging channel PCH simultaneously, but the time slot between them is different, when the least common multiple in their cycles, can overlap phenomenon, at this moment phone can use priority algorithm, selects one of them.
19. method as claimed in claim 16 is characterized in that: if PHS public network and Home eNodeB all can not find, phone can start the CCH supervision that a timer is sequentially done public network and Home eNodeB.
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Cited By (14)
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WO2008003240A1 (en) * | 2006-06-30 | 2008-01-10 | Zte Corporation | Method of realizing calling in a dual-mode mobile telephone |
WO2008106873A1 (en) * | 2007-03-06 | 2008-09-12 | Huawei Technologies Co., Ltd. | A method, a system and a device for realizing register and communication of the personal handhold telephone terminal |
CN100438669C (en) * | 2005-03-03 | 2008-11-26 | 乐金电子(中国)研究开发中心有限公司 | International mobile user identity code updating method for mobile communication terminal |
CN100441051C (en) * | 2005-08-10 | 2008-12-03 | 中国电信股份有限公司 | Communication method of public network privat network two-standby of personal mobile phone system terminal |
US7627308B2 (en) | 2005-04-22 | 2009-12-01 | Qisda Corporation | Mobile communication system, mobile communication device and method for incoming-call filtering |
CN101098539B (en) * | 2006-06-27 | 2010-10-13 | 英华达(南京)科技有限公司 | Method for actively responding connection state through PHS mobile phone |
CN102186255A (en) * | 2008-07-31 | 2011-09-14 | 上海华为技术有限公司 | Scheduling method and device |
CN101355781B (en) * | 2007-07-25 | 2011-09-28 | 华为技术有限公司 | Method for implementing wireless access of terminal and wireless communication equipment |
CN1889712B (en) * | 2005-06-27 | 2012-03-07 | 中国电信股份有限公司 | System and method for realizing radio message service via fixed network information terminal |
CN101616140B (en) * | 2008-06-27 | 2012-06-06 | 中兴通讯股份有限公司 | Method and system for registering family base station and family base station configuration server |
CN101330737B (en) * | 2007-06-21 | 2013-02-27 | 华为技术有限公司 | Method for accessing indoor base station, network equipment and user equipment |
CN103957335A (en) * | 2014-05-16 | 2014-07-30 | 王霜剑 | Network switching equipment of mobile communication terminal |
CN104917674A (en) * | 2015-05-25 | 2015-09-16 | 苏州工业园区服务外包职业学院 | Home gateway equipment registration method implemented through telephone service |
CN111867008A (en) * | 2020-05-21 | 2020-10-30 | 厦门亿联网络技术股份有限公司 | Multi-mode base station and cordless communication system |
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CN100438669C (en) * | 2005-03-03 | 2008-11-26 | 乐金电子(中国)研究开发中心有限公司 | International mobile user identity code updating method for mobile communication terminal |
US7627308B2 (en) | 2005-04-22 | 2009-12-01 | Qisda Corporation | Mobile communication system, mobile communication device and method for incoming-call filtering |
CN1889712B (en) * | 2005-06-27 | 2012-03-07 | 中国电信股份有限公司 | System and method for realizing radio message service via fixed network information terminal |
CN100441051C (en) * | 2005-08-10 | 2008-12-03 | 中国电信股份有限公司 | Communication method of public network privat network two-standby of personal mobile phone system terminal |
CN101098539B (en) * | 2006-06-27 | 2010-10-13 | 英华达(南京)科技有限公司 | Method for actively responding connection state through PHS mobile phone |
WO2008003240A1 (en) * | 2006-06-30 | 2008-01-10 | Zte Corporation | Method of realizing calling in a dual-mode mobile telephone |
WO2008106873A1 (en) * | 2007-03-06 | 2008-09-12 | Huawei Technologies Co., Ltd. | A method, a system and a device for realizing register and communication of the personal handhold telephone terminal |
CN101330737B (en) * | 2007-06-21 | 2013-02-27 | 华为技术有限公司 | Method for accessing indoor base station, network equipment and user equipment |
CN101355781B (en) * | 2007-07-25 | 2011-09-28 | 华为技术有限公司 | Method for implementing wireless access of terminal and wireless communication equipment |
CN101616140B (en) * | 2008-06-27 | 2012-06-06 | 中兴通讯股份有限公司 | Method and system for registering family base station and family base station configuration server |
CN102186255A (en) * | 2008-07-31 | 2011-09-14 | 上海华为技术有限公司 | Scheduling method and device |
CN103957335A (en) * | 2014-05-16 | 2014-07-30 | 王霜剑 | Network switching equipment of mobile communication terminal |
CN104917674A (en) * | 2015-05-25 | 2015-09-16 | 苏州工业园区服务外包职业学院 | Home gateway equipment registration method implemented through telephone service |
CN104917674B (en) * | 2015-05-25 | 2018-10-19 | 苏州工业园区服务外包职业学院 | A kind of family gateway equipment register method realized by telephone service |
CN111867008A (en) * | 2020-05-21 | 2020-10-30 | 厦门亿联网络技术股份有限公司 | Multi-mode base station and cordless communication system |
CN111867008B (en) * | 2020-05-21 | 2023-02-17 | 厦门亿联网络技术股份有限公司 | Multi-mode base station and cordless communication system |
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