• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A mobile station can be selectively coupled to two or more networks. By maintaining an address translation table and introducing communication between the switching control units within the multiple networks, it is possible to provide notification to the mobile station of the existence of a communication request from a first network while the mobile station coupled to the second network.
    公开号:US20010004593A1
    申请号:US09/740,181
    申请日:2000-12-18
    公开日:2001-06-21
    发明作者:David Holmes；Adrian Smith
    申请人:Holmes David William James；Adrian Smith；
    IPC主号:H04W68-12
    专利说明:
    [0001] This application is a 37 C.F.R. § 1.53(b) continuation application of and claims priority to U.S. patent application Ser. No. 08/777,336, entitled “Method and Apparatus for Alerting a Station in One Network of a Requested Communication From a Second Network”, filed Dec. 27, 1996. [0001]
    [0002] The present application is directed to a method and system for alerting a mobile station coupled to a first network that a communication request for the station appears on a second network. More particularly, the present invention is directed to a method and system for tracking which network a mobile station is coupled to and then translating address information to communicate alert messages to the mobile station with regard to communications on yet another network. [0002]
    [0003] It is known in the field of wireless communications to provide mobile terminal devices in accordance with a standard referred to as IS-136. In accordance with that standard the mobile terminal can have the capability of conducting communication on at least two different networks. One network is the standard wireless voice network while the other network is a packet data network commonly referred to as CDPD (Cellular Digital Packet Data). [0003]
    [0004] An example of a known communication configuration is illustrated in FIG. 1. The mobile station [0004] 10 is capable of communicating over either one of two networks, a voice network 100 and a packet network 150. In voice network 100 the mobile station 10 can communicate with any one of a plurality of base stations (102 a to 102 n) depending on the cell in which the mobile station is located. The base stations are coupled to a mobile switching center (MSC) 101 which controls the switching for the wireless communications. The MSC 101 can be coupled to the public switch telephone network (PSTN). Typically, when the user of the mobile station turns on the station it will automatically register with the MSC 101 through the base station serving the cell in which the mobile station is located. The mobile station performs this registration through a digital control channel (DCCH) associated with the base station.
    [0005] A mobile station [0005] 10 is also capable of packet data communication. These communications are handled via packet network 150. Packets symbolically represented as elements 151 are received by a mobile data intermediate system or mobile gateway (MDIS) 152 which in essence is a packet data counterpart to the MSC 101. The MDIS 152 can communicate with a plurality of mobile data base stations such as MDBS 153 which can send wireless transmissions to the mobile station 10 when that station is in the cell served by the MDBS. When the mobile station wishes to register for purposes of engaging in packet data communications, it does so over a packet control channel (PCCH) associated with the MDBS 153.
    [0006] Presently, because of the different architecture of these two networks, the voice network and the packet network, there is a lack of commonality of interfaces. As a consequence, while the mobile station [0006] 10, is “camped on” to the control channel for one of the two networks, (i.e., while it is set to communicate control information to or receive information from a base station relating to one of the control channels), it cannot receive any information from the other network. For example, if mobile station 10 is camped on to a DCCH, then any attempt at providing a packet data transmission or communication to mobile station 10 in the known network configuration, is impossible. There is no way to signal the mobile station 10 over the PCCH since the mobile station is locked onto or camped onto the DCCH. Similarly, should the mobile station be camped onto the packet network, PCCH in anticipation of packet data communication, it is unable to receive any notice of a communication via the voice network.
    [0007] It is desirable to provide a system in which the mobile station, while active and camped on in one network, can receive notices of communications on another network with which it is capable of communicating. [0007] SUMMARY OF THE INVENTION
    [0008] In accordance with the present invention, the mobile switching center of the voice network and the MDIS of the packet data network can be in communication with one another either indirectly via a memory or directly. The indirect or direct communications operate to provide mobile station address information from the network on which the mobile station is camped to the alternative network. Then, alternative network, upon receipt of a communication request for the mobile station, can generate a request to the mobile station through the network on which it is camped to advise the mobile station of the existence of an attempted communication on the alternative network. This alert or notice can be generated directly by the alternative network which could use an address translator to identify the address of the mobile station on the network on which it is camped and can create a message of appropriate structure for the network in which the mobile station is camped. [0008]
    [0009] Alternatively, the network receiving the communication request could send a communication request trigger to the network to which the mobile station is camped and that latter network could generate the appropriate address and message alert for the mobile station. [0009]
    [0010] The present invention permits the mobile station to receive notice of communication requests from the network or networks with which it has registered but on which it is not camped (that is, to which it has identified itself while its in the region of interest). [0010] SUMMARY OF THE DRAWINGS
    [0011] FIG. 1 illustrates a known network configuration of a voice network and a data network with which a mobile station can communicate. [0011]
    [0012] FIG. 2 illustrates a first embodiment of the present invention. [0012]
    [0013] FIG. 3 illustrates an address translation table useful in connection with the embodiment of FIG. 2. [0013]
    [0014] FIG. 4 illustrates a process flow in connection with an implementation of an embodiment of the present invention. [0014] DETAILED DESCRIPTION
    [0015] FIG. 2 illustrates an embodiment of the present invention. The base station [0015] 102, the mobile database station 153 and the mobile station 10 correspond to the same elements that appear in FIG. 1. In accordance with the embodiment of FIG. 2, the mobile switching center 201 and the mobile data intermediate station or gateway 252 are both coupled to a database 220. The two elements are also coupled to one another.
    [0016] It is known at present that in actual installation, the MSC and MDIS may be in the same rack of equipment. In accordance with the present invention, these two elements would now, for the first time, be coupled to one another so as to be able to communicate requests for data transmission through one another to enhance the ability of the mobile station to be notified of pending communication requests. The database [0016] 220 could store an address translation table, an example of which is shown in FIG. 3. That translation table would correlate a mobile identification number (MIN) of the mobile station with the IP (Internet protocol) Address associated with the mobile station. The embodiment illustrated in FIG. 2 could operate in accordance with the process set forth in FIG. 4.
    [0017] In accordance with a known registration procedure, once the mobile station is turned on, it will register with the DCCH of the cell in which it is located. After registering with the DCCH, the mobile station will then register with the PCCH in step [0017] 402. Then, depending on the user's preference for communications, the mobile station will camp onto either the DCCH or the PCCH as indicated in step 403. After camping on, the visitor location register (VLR) for that cell would be notified of the control channel selection of the mobile station in step 404. As a consequence, the VLR would store, for example as a flag, information identifying that network on which the mobile station is camped on.
    [0018] If a request for a voice communication is sent, then the voice communication request arrives to MSC [0018] 201 which checks the VLR for which network the mobile station is camped, step 410. If the mobile station is camped on the DCCH, then the MSC will process the voice communication as normal, step 411. If, however, the MSC determines upon inspection of the VLR that the mobile station is camped on the PCCH in the packet network the processing differs. The MSC can then translate the MIN of the mobile station to an IP address by accessing the address translation table stored in database 220, step 412. Subsequently, the MSC sends a request to the MDIS to send an alert to the appropriate IP address for the MS 10, step 413. In one possible embodiment, the MSC merely sends a trigger along with the IP address and the MDIS creates a packet data signal for transmission to MS 10 over the PCCH. Alternatively, the MSC 201 could take the IP address data and construct its own packet message, thereby replicating a packet data communication request and transmit that request to the MDIS which would then act merely as a pass through device.
    [0019] Once the mobile station receives the notice of the communication request from the voice network, the mobile station can elect to camp on the DCCH or to not respond to the communication request and remain camped on the PCCH. [0019]
    [0020] An analogous operation is performed at the MDIS when a request for packet communication is received. The MDIS can check the VLR for determination of the network to which the MS is camped on. If MS [0020] 10 is camped on the PCCH then MDIS 252 processes the request for packet communication in a normal fashion. If, however, mobile station 10 is camped on the DCCH, then MDIS 252 can access the database 220 to translate the IP address to a MIN, step 422. The MDIS then requests the MSC 201 to send an alert to the appropriate MIN, step 433. As described above, the MDIS could simply transmit a trigger to MSC 201 which would then initiate signaling, via the DCCH, to notify mobile station 10. Alternatively, MDIS 252 could attempt to replicate a voice communication request such as those which arrive from the PSTN using the appropriate MIN.
    [0021] In accordance with the present invention, the voice network and the packet data network communicate with one another in such a manner that they can notify the mobile station [0021] 10 that a communication awaits it on a network to which it is not camped on.
    [0022] In the embodiment described with respect to FIG. 4, it is described that the mobile station first registers with DCCH and then with PCCH. The order of registration could be reversed. [0022]
    [0023] Furthermore, in the embodiment illustrated in FIG. 2, a separate database is accessible by both the MSC and the MDIS. Other alternatives exist. For instance, the database could be either the MSC or MDIS and not directly connected to the counterpart in the other network. Or, alternatively, MSC and MDIS could each maintain its own address translation table. In such a circumstance then, the MSC and MDIS would have to communicate with one another during the registration process so as to advise one another of the appropriate network addresses for the mobile station to guarantee that they would be properly correlated with one another. [0023]
    [0024] Additionally, the present invention has been described in the context of voice/packet data networks. It has equal applicability to any multimode station capable of communicating with distinct networks in its different operational modes, such as voice and paging networks for example. Thus, in accordance with the present invention, a mobile station which is capable of communicating with multiple networks such as a voice network and a packet data network, can receive notification of the existence of a communication request from one of the networks while the mobile station is camped onto one of the other networks. [0024]
    权利要求:
    Claims (16)
    [1" id="US-20010004593-A1-CLM-00001] 1. In a communications system comprising a first wireless network and a second wireless network wherein a mobile station is capable of being coupled to either one of the first and second networks, a method for notifying the mobile station of a communication on the one of the first and second networks to which the station is not presently coupled, the method comprising the steps of:
    storing a first network address of said mobile station in said first network;
    storing a second network address of said mobile station in said second network;
    correlating said first network address with said second network address via a message between said first network and said second network;
    receiving a communication request on that one of said first and second networks to which said mobile station is not presently coupled;
    transmitting a communication request trigger from that one of said first and second networks to which said mobile station is not presently coupled to that one of said first and second networks to which said mobile station is presently coupled;
    transmitting an alert on that one of said first and second networks to which said mobile station is presently coupled using the network address of said first and second network addresses that corresponds to that one of said first and second networks to which said mobile station is presently coupled;
    wherein said alert indicates that said communication request has been received on that one of said first and second networks to which said mobile station is not presently coupled.
    [2" id="US-20010004593-A1-CLM-00002] 2. The method of
    claim 1 further comprising the steps of:
    storing a first indicator flag in said first network; and
    storing a second indicator flag in said second network,
    wherein said first indicator flag indicates whether or not said mobile station is camped on said first network, and said second indicator flag indicates whether or not said mobile station is camped on said second network.
    [3" id="US-20010004593-A1-CLM-00003] 3. The method of
    claim 2 wherein said alert includes information regarding said communication request.
    [4" id="US-20010004593-A1-CLM-00004] 4. The method of
    claim 3 wherein said information includes how the mobile station should respond to the communication request.
    [5" id="US-20010004593-A1-CLM-00005] 5. The method of
    claim 2 wherein said first network is a voice network and said second network is a voice network.
    [6" id="US-20010004593-A1-CLM-00006] 6. The method of
    claim 2 wherein said first network is a packet data network and said second network is a packet data network.
    [7" id="US-20010004593-A1-CLM-00007] 7. In a communications system wherein a mobile station is capable of camping on only one wireless network at a time of a plurality of wireless networks, a method for operating a mobile switching center on that particular network of said plurality of networks to which said mobile station is presently coupled to notify the mobile station of a communication on one of said plurality of networks to which the station is not presently coupled, the method comprising the steps of:
    storing a network address of said mobile station in said particular network;
    notifying at least one of said plurality of wireless networks to which said mobile station is not presently coupled of said stored network address;
    receiving a communication request trigger from one of said plurality of wireless networks to which said mobile station is not presently coupled;
    transmitting an alert on said particular network using said stored network address;
    wherein said alert indicates that a communication request has been received on one of said plurality of wireless networks to which said mobile station is not presently coupled.
    [8" id="US-20010004593-A1-CLM-00008] 8. The method of
    claim 7 further comprising the step of:
    storing an indicator flag in said particular network,
    wherein said indicator flag indicates whether or not said mobile station is camped on said particular network.
    [9" id="US-20010004593-A1-CLM-00009] 9. The method of
    claim 8 wherein said particular network is a voice network and at least one of said plurality of wireless networks to which said mobile station is not presently coupled is a packet data network.
    [10" id="US-20010004593-A1-CLM-00010] 10. The method of
    claim 8 wherein said alert includes information regarding said communication request.
    [11" id="US-20010004593-A1-CLM-00011] 11. The method of
    claim 10 wherein said information includes how the mobile station should respond to the communication request.
    [12" id="US-20010004593-A1-CLM-00012] 12. In a communications system wherein a mobile station is capable of camping on only one wireless network at a time of a plurality of wireless networks, a method for operating a mobile data intermediate system on that particular network of said plurality of networks to which said mobile station is presently coupled to notify the mobile station of a communication on one of said plurality of networks to which the station is not presently coupled, the method comprising the steps of:
    storing a network address of said mobile station in said particular network;
    notifying at least one of said plurality of wireless networks to which said mobile station is not presently coupled of said stored network address;
    receiving a communication request trigger from one of said plurality of wireless networks to which said mobile station is not presently coupled;
    transmitting an alert on said particular network using said stored network address;
    wherein said alert indicates that a communication request has been received on one of said plurality of wireless networks to which said mobile station is not presently coupled.
    [13" id="US-20010004593-A1-CLM-00013] 13. The method of
    claim 12 further comprising the step of:
    storing an indicator flag in said particular network,
    wherein said indicator flag indicates whether or not said mobile station is camped on said particular network.
    [14" id="US-20010004593-A1-CLM-00014] 14. The method of
    claim 13 wherein said particular network is a packet data network and at least one of said plurality of wireless networks to which said mobile station is not presently coupled is a voice network.
    [15" id="US-20010004593-A1-CLM-00015] 15. The method of
    claim 13 wherein said alert includes information regarding said communication request.
    [16" id="US-20010004593-A1-CLM-00016] 16. The method of
    claim 15 wherein said information includes how the mobile station should respond to the communication request.
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    法律状态:
    2005-04-22| AS| Assignment|Owner name: CINGULAR WIRLEESS II, LLC, GEORGIA Free format text: CERTIFICATE OF CONVERSION;ASSIGNOR:CINGULAR WIRELESS II, INC.;REEL/FRAME:017546/0612 Effective date: 20041027 Owner name: CINGULAR WIRLEESS II, LLC,GEORGIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CINGULAR WIRELESS II, INC.;REEL/FRAME:017546/0612 Effective date: 20041027 Owner name: CINGULAR WIRELESS II, INC.,GEORGIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NEW CINGULAR WIRELESS SERVICES, INC. F/K/A AT&T WIRELESS SERVICES, INC.;REEL/FRAME:017555/0711 Effective date: 20041027 Owner name: CINGULAR WIRLEESS II, LLC, GEORGIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CINGULAR WIRELESS II, INC.;REEL/FRAME:017546/0612 Effective date: 20041027 Owner name: CINGULAR WIRELESS II, INC., GEORGIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NEW CINGULAR WIRELESS SERVICES, INC. F/K/A AT&T WIRELESS SERVICES, INC.;REEL/FRAME:017555/0711 Effective date: 20041027 |
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    2014-05-09| REMI| Maintenance fee reminder mailed|
    2014-10-01| LAPS| Lapse for failure to pay maintenance fees|
    2014-10-27| STCH| Information on status: patent discontinuation|Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
    2014-11-18| FP| Expired due to failure to pay maintenance fee|Effective date: 20141001 |
    优先权:
    申请号 | 申请日 | 专利标题
    US08/777,336|US6230009B1|1996-12-27|1996-12-27|Method and apparatus for alerting a station in one network of a requested communication from a second network|
    US09/740,181|US6459897B2|1996-12-27|2000-12-18|Method and apparatus for alerting a station in one network of a requested communication from a second network|US09/740,181| US6459897B2|1996-12-27|2000-12-18|Method and apparatus for alerting a station in one network of a requested communication from a second network|
    US10/241,432| US7092712B2|1996-12-27|2002-09-12|Method and apparatus for alerting a station in one network of a requested communication from a second network|
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