IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0262510
(2005-10-28)
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등록번호 |
US-7778637
(2010-09-06)
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우선권정보 |
CN-03 1 53290(2003-08-14) |
발명자
/ 주소 |
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출원인 / 주소 |
- Huawei Technologies Co., Ltd.
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인용정보 |
피인용 횟수 :
4 인용 특허 :
8 |
초록
▼
The present invention discloses a method for a user terminal in a Wireless Local Area Network (WLAN) quickly accessing its home network. Pre-store in each user terminal, respectively, the identifications of all the WLANs with direct connections to the home network of the corresponding user terminal.
The present invention discloses a method for a user terminal in a Wireless Local Area Network (WLAN) quickly accessing its home network. Pre-store in each user terminal, respectively, the identifications of all the WLANs with direct connections to the home network of the corresponding user terminal. For a user terminal that is in an area covered by more than one WLAN, compare the identification of each of the detected WLANs with the WLAN identifications stored in the current user terminal. A successful matching between the identification of a detected WLAN and a pre-stored WLAN identification then means that the home network of the current user terminal is connected with the corresponding WLAN access network and can be accessed via this WLAN. If a plurality of detected WLAN identifications match the stored identifications, select in accordance with a pre-defined selecting rule one of the corresponding WLANs and get accessed via the selected WLAN. This method enables a user terminal covered by more than one WLAN to find quickly a WLAN access network directly connected with its home network and to access the home network via this WLAN.
대표청구항
▼
What is claimed is: 1. A method for a user terminal accessing a Home Public Land Mobile Network (HPLMN) of the user terminal via a Wireless Local Area Network (WLAN), the method comprises: obtaining identifications of WLANs detected by the user terminal, wherein the user terminal is covered by more
What is claimed is: 1. A method for a user terminal accessing a Home Public Land Mobile Network (HPLMN) of the user terminal via a Wireless Local Area Network (WLAN), the method comprises: obtaining identifications of WLANs detected by the user terminal, wherein the user terminal is covered by more than one WLAN, the more than one WLAN is inter-working with a 3GPP system which comprises a plurality of Public Land Mobile Networks, one of the plurality of Public Land Mobile Networks functions as the HPLMN of the user terminal, and the other of the plurality of Public Land Mobile Networks function as Visited Public Land Mobile Networks (VPLMN) of the user terminal; selecting an identification from the identifications of the detected WLANs; comparing the selected identification with pre-stored identifications of the WLANs directly connecting with the HPLMN of the user terminal; and the user terminal accessing its HPLMN via the WLAN identified by the selected identification that matches the pre-stored identifications of the WLANs directly connecting with the HPLMN of the user terminal. 2. The method according to claim 1, further comprising: recording each selected identification that matches the pre-stored identification; selecting a first identification from the matched identifications in accordance with a pre-defined selecting rule if there are more than one matched identifications; wherein said accessing the HPLMN comprises: accessing the HPLMN of the user terminal via the WLAN corresponding to the first identification. 3. The method according to claim 2, wherein each of said identifications of the detected WLANs comprises a service set identification (SSID) of a detected WLAN corresponding to that identification. 4. The method according to claim 2, wherein the pre-defined selecting rule comprises: selecting a WLAN based on the signal intensity, or a network load, or a signal intensity and a network load of all WLANs. 5. The method according to claim 1, wherein each of said identifications of the detected WLANs comprises a service set identification (SSID) of a detected WLAN corresponding to that identification. 6. The method according to claim 1, further comprising: setting up in advance in the user terminal a WLAN roaming relation list configured to store the identification of the WLAN directly connecting with the HPLMN of the user terminal; and the user terminal comparing the selected identification with the pre-stored identification of a WLAN in the WLAN roaming relation list. 7. The method according to claim 6, wherein the WLAN roaming relation list further includes priority information for selecting a WLAN. 8. The method according to claim 7, wherein the pre-defined selecting rule comprises: selecting a WLAN in accordance with the priority information. 9. The method according to claim 2, further comprising: setting up in advance in the user terminal a WLAN roaming relation list configured to store the identification of the WLAN directly connecting with the HPLMN of the user terminal; and the user terminal comparing the selected WLAN identification with the pre-stored identification of a WLAN in the WLAN roaming relation list. 10. The method according to claim 9, wherein the WLAN roaming relation list further includes priority information for selecting a WLAN. 11. The method according to claim 10, wherein the selecting rule comprises: selecting a WLAN in accordance with the priority information. 12. The method according to claim 1, further comprising: the user terminal updating the pre-stored identification of a WLAN directly connecting with the HPLMN. 13. The method according to claim 12, wherein the updating comprises: a network instructing the user terminal to make updating, and the user terminal making query in the server provided by the HPLMN and updating the pre-stored information; receiving the identification of the WLAN directly connecting with the HPLMN of the user terminal from a network; or the user terminal making initiative query in the HPLMN and updating the pre-stored identification of the WLAN directly connecting with the HPLMN. 14. The method according to claim 12, further comprising: recording, by the HPLMN of the user terminal, in time the identifications of WLANs to which the HPLMN's connecting relations have changed. 15. The method according to claim 2, further comprising: the user terminal updating the pre-stored identifications of the WLAN directly connecting with the HPLMN periodically or whenever necessary. 16. The method according to claim 15, wherein the updating comprises: updating according to notification of a network; or receiving the identification of the WLAN directly connecting with the HPLMN of the user terminal from the network; or making query in the HPLMN and updating the pre-stored identification of the WLAN directly connecting with the HPLMN. 17. The method according to claim 1, further comprising: if the selected WLAN identification matches one of the one or more pre-stored WLAN identifications, initiating, by the user terminal, a service authorization request for a service of 3GPP packet switched domain to an Authentication, Authorization and Accounting Server (AS) of the HPLMN via the WLAN having the selected WLAN identification; and wherein the user terminal accessing its HPLMN via the WLAN identified by the selected identification comprises: if the authorization succeeds, getting accessed to, by the user terminal, the service of 3GPP packet switched domain of the HPLMN after a channel is established between the terminal and a Packet Data Gateway (PDG) assigned by the AS. 18. A user terminal comprising: a module to obtain identifications of Wireless Local Area Networks (WLANs) detected by the user terminal, wherein the user terminal is covered by more than one WLAN, the more than one WLAN is inter-working with a 3GPP system which comprises a plurality of Public Land Mobile Networks, one of the plurality of Public Land Mobile Networks functions as Home Public Land Mobile Network (HPLMN) of the user terminal, and the other of the plurality of Public Land Mobile Networks function as Visited Public Land Mobile Networks (VPLMN) of the user terminal; a module to select an identification from the identifications of the detected WLANs; a module to compare the selected identification of the detected WLAN with pre-stored identifications of WLANs directly connecting with the HPLMN of the user terminal; and a module to access its HPLMN via the WLAN identified by the selected identification that matches the pre-stored identifications of the WLANs directly connecting with the HPLMN of the user terminal.
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