Access point and method for establishing a candidate wireless access point list

Abstract

To provide an apparatus and method for generating a list of candidate wireless access points available for roaming.SOLUTION: In the wireless communications system, the access point includes a transceiver and a processor, where the processor is electrically connected to the transceiver, and the transceiver respectively receives one wireless access point message or multiple wireless access point messages sent by one remote wireless access point or multiple remote wireless access points; A candidate wireless access point list is generated based on the wireless access point message or messages, a channel scan is performed based on the candidate wireless access point list, and a neighbor wireless access point list is generated based on the results of the channel scan.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] This application claims priority from Taiwan Patent Application No. 113123304, filed June 24, 2024, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to an access point and a method for establishing a candidate wireless access point list, and more particularly to an access point and a method for establishing a candidate wireless access point list that generates the candidate wireless access point list by communicating with other remote wireless access points. [Background technology]

[0003] In conventional wireless network roaming technology, when a mobile device connects to an access point (AP), the mobile device may send a request, also called a neighbor report request, to the connected access point in accordance with the IEEE 802.11k standard. After receiving the neighbor report request, the access point sends a response, also called a neighbor report response, to the mobile device, allowing the mobile device to obtain information about other available neighbor wireless access points. Summary of the Invention [Problem to be solved by the invention]

[0004] Because the IEEE 802.11k standard does not explicitly specify a method for obtaining information about other wireless access points available for roaming, an access point cannot provide an effective candidate wireless access point list or neighbor report response to a mobile device. Therefore, a mobile device still needs to perform a full channel scan for neighbor wireless access points to obtain information about neighbor wireless access points available for roaming, which results in significant additional time and power consumption and makes it difficult to quickly find a suitable neighbor wireless access point that can provide successful networking. Therefore, there is an urgent need in the art to improve the above-mentioned wireless network roaming problems in conventional access points. [Means for solving the problem]

[0005] To solve at least the above problem, one embodiment of the present invention provides an access point. The access point may include a transceiver and a processor. The processor is electrically connected to the transceiver. The transceiver is configured to receive one or more wireless access point messages transmitted by one or more remote wireless access points, respectively. The processor is configured to generate a candidate wireless access point list based on the one or more wireless access point messages.

[0006] The transceiver is further configured to perform a channel scan based on the candidate wireless access point list, and the processor is further configured to generate a neighbor wireless access point list based on results of the channel scan.

[0007] To solve at least the above problem, one embodiment of the present invention further provides a method for establishing a candidate wireless access point list, which may include receiving, by an access point, one or more wireless access point messages transmitted by one or more remote wireless access points, respectively, and generating, by the access point, a candidate wireless access point list based on the one or more wireless access point messages.

[0008] To solve at least the above problem, one embodiment of the present invention further provides a method for establishing a neighbor wireless access point list. The method for establishing a neighbor wireless access point list may include the steps of receiving, by an access point, one wireless access point message or multiple wireless access point messages transmitted by one remote wireless access point or multiple remote wireless access points, respectively, generating, by the access point, a candidate wireless access point list based on the one wireless access point message or multiple wireless access point messages, performing, by the access point, a channel scan based on the candidate wireless access point list, and generating, by the access point, a neighbor wireless access point list based on a result of the channel scan.

[0009] As described above, the present invention includes a method for establishing at least one of the above access points and a candidate wireless access point list, through which a wireless access point message or multiple wireless access point messages transmitted by a remote wireless access point or multiple remote wireless access points may be received and a candidate wireless access point list may be generated.

[0010] Therefore, the candidate wireless access point list generated by the present invention already includes information about other candidate wireless access points to which a successful connection can be established. In particular, a mobile device can send a neighbor report request to an access point. The access point then generates a candidate wireless access point list based on one or more wireless access point messages, takes the candidate wireless access point list as a neighbor report response, and sends the neighbor report response to the mobile device. In this way, the mobile device can quickly find a suitable access point to which a successful connection can be established based on the candidate wireless access point list without performing a channel scan for all neighbor wireless access points, thereby effectively saving the time and power consumed by the mobile device in performing a channel scan for neighbor wireless access points. Therefore, the access point and method for establishing a wireless access point list provided by the present invention effectively solve the above-mentioned problems associated with conventional wireless network roaming technologies.

[0011] Furthermore, the present invention further includes a method for establishing the access point and neighbor wireless access point lists, through which a wireless access point message or messages transmitted by a remote wireless access point or multiple remote wireless access points can be received and a candidate wireless access point list can be generated. Furthermore, a channel scan is performed according to the candidate wireless access point list, and then a neighbor wireless access point list is generated based on the results of the channel scan, and the neighbor wireless access point list is transmitted to the mobile device as a neighbor report response. In this way, the mobile device only needs to perform a channel scan for wireless access points in the neighbor wireless access point list, rather than performing a full channel scan for other access points.

[0012] The above description is not intended to limit the present invention, but merely describes the technical problems that can be solved by the present invention, the technical means that the present invention can adopt, and the technical effects that the present invention can achieve, and provides a preliminary understanding of the present invention to those skilled in the art. Those skilled in the art can further understand the details of various embodiments of the present invention through the accompanying drawings and the contents described in the following embodiments. [Brief explanation of the drawings]

[0013] [Figure 1A] FIG. 1 is a schematic block diagram of an access point according to some embodiments of the present invention. [Figure 1B] FIG. 10 is a schematic configuration diagram of an access point according to another embodiment of the present invention. [Figure 2A] 3 is a schematic diagram illustrating how a candidate wireless access point list is generated by an access point according to some embodiments of the present invention. [Figure 2B]3 is a schematic diagram illustrating how a neighbor wireless access point list is generated by an access point in accordance with some embodiments of the present invention. FIG. [Figure 3] 1 is a flowchart diagram of a method for establishing a neighbor wireless access point list according to some embodiments of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] The present invention will be described below with reference to several embodiments. However, these embodiments are not intended to limit the practice of the present invention to only the operations, environments, applications, structures, flow processes, or steps described herein. Elements unrelated to the present invention may be omitted from the description but may be implied in the accompanying drawings. In the accompanying drawings, dimensions and dimensional scales between individual elements are given for illustrative purposes only and are not intended to limit the present invention. Unless otherwise specified, in the following description, the same (or similar) reference numerals may correspond to the same (or similar) elements. Unless otherwise specified, the number of each element described below may be one or more, but may be implemented.

[0015] The terms used in the present invention are merely for the purpose of describing the embodiments and are not intended to limit the present invention. Unless the context clearly dictates otherwise, the singular form "a / an / one" is intended to include the plural. Terms such as "comprises" and "comprises" indicate the presence of features, integers, steps, operations, elements and / or components described herein, but do not exclude the presence of one or more other features, integers, steps, operations, elements, components and / or combinations thereof. The term "and / or" includes any and all combinations of one or more associated listed items.

[0016] 1A shows a schematic diagram of an access point according to some embodiments of the present invention. The contents shown in FIG. 1A are merely illustrative of some embodiments of the present invention and are not intended to limit the scope of the claimed invention.

[0017] Referring to FIG. 1A , in some embodiments of the present invention, the access point 1 may basically include a transceiver 20 and a processor 30, where the processor 30 and the transceiver 20 are electrically connected to each other (directly or indirectly). The transceiver 20 is configured to transmit a wireless access point message to one remote wireless access point or multiple wireless access points, respectively, and to receive a wireless access point message or multiple wireless access point messages transmitted by the one remote wireless access point or multiple remote wireless access points, respectively. Specifically, the access point 1 can communicate with one remote wireless access point or multiple remote wireless access points through broadcasting, realizing mutual transmission of access point messages between these remote wireless access points. A remote wireless access point refers to another access point that can communicate with the access point 1 but is not connected to a mobile device. Furthermore, when Access Point 1 is connected with a mobile device (i.e., the mobile device is within the effective signal range of Access Point 1), the mobile device can send a request (i.e., a neighbor report request) to Access Point 1, and after Access Point 1 receives the request, Access Point 1 can send a response (i.e., a neighbor report response) to the mobile device.

[0018] 1B. In some embodiments, the access point 1 may include a wired transceiver 40 and a wireless transceiver 50, may include only a wireless transceiver 50, or may include multiple wireless transceivers 50 (not shown). Note that the number and type of transceivers are not limited by the present invention.

[0019] Access point 1 and the remote wireless access point or points all have their service set identifier (SSID) information, wireless network security settings, and wireless channel setting information. For example, the SSID is an identification name of access point 1, the SSID information includes a basic service set identifier (BSSID) and an extended service set identifier (ESSID), the wireless network security settings are the security type and network security key of access point 1, and the wireless channel setting information is, but is not limited to, the channel number and wireless frequency setting used by access point 1.

[0020] In some embodiments, transceiver 20 may be configured to periodically or aperiodically transmit wireless access point messages to one remote wireless access point or multiple remote wireless access points, respectively, and to receive one wireless access point message or multiple wireless access point messages transmitted by one remote wireless access point or multiple wireless access points, respectively. Whether wireless access point messages are transmitted periodically or aperiodically to one remote wireless access point or multiple remote wireless access points is not a limitation of the present invention and is therefore not further described herein. In some embodiments, one remote wireless access point or multiple remote wireless access points may also actively transmit one wireless access point message or multiple wireless access point messages to access point 1, respectively.

[0021] In response, the processor 30 may generate a candidate wireless access point list SL (hereinafter referred to as candidate list SL) based on the wireless access point message or the wireless access point messages. Then, when the request sent by the mobile device is received by the access point 1, the access point 1 may send the candidate list SL to the mobile device as a response, so that the mobile device may connect according to the candidate list SL.

[0022] 2A is a schematic diagram illustrating how a candidate wireless access point list may be generated by an access point according to some embodiments of the present invention. The content shown in FIG. 2A is merely illustrative of some embodiments of the present invention and is not intended to limit the scope of the claimed invention.

[0023] 2A , for example, the transceiver 20 of access point 1 receives a wireless access point message S1 (hereinafter referred to as message S1), a wireless access point message S2 (hereinafter referred to as message S2), and a wireless access point message S3 (hereinafter referred to as message S3) transmitted by remote wireless access point 10A, remote wireless access point 10B, and remote wireless access point 10C, respectively. The channel of access point 1 is F0, the channel of remote wireless access point 10A is F1, the channel of remote wireless access point 10B is F2, and the channel of remote wireless access point 10C is F3.

[0024] The processor 30 is configured to generate a candidate list SL based on the messages S1, S2, and S3 after the transceiver 20 of the access point 1 receives the messages S1, S2, and S3. Specifically, the processor 30 may analyze the messages S1, S2, and S3 and determine whether the information in the messages S1, S2, and S3 (such as the above-mentioned SSID and wireless network security settings) matches the pre-configuration information of the access point 1 (such as the above-mentioned SSID and security settings). For example, if the information contained in the messages S1 and S3 matches the pre-configuration information of the access point 1, while the information in the message S2 does not match the pre-configuration information of the access point 1, the processor 30 generates the candidate list SL based on the messages S1, S2, and S3. Then, when the access point 1 receives a request sent by a mobile device, the access point 1 may send the candidate list SL to the mobile device as a response so that the mobile device may connect based on the candidate list SL. In this case, the candidate list SL of the access point 1 includes the remote wireless access point 10A and the remote wireless access point 10C, but does not include the remote wireless access point 10B.

[0025] It should be further noted that since the candidate list SL includes the pre-configured information of the remote wireless access point 10A and the pre-configured information of the remote wireless access point 10C, the mobile device can perform channel scanning based on the candidate list SL without performing channel scanning for all remote wireless access points. Therefore, the mobile device can effectively save time and power consumed by channel scanning through the candidate list SL generated by the access point 1.

[0026] Referring now to FIG. 2B , in some embodiments, after generating the candidate list SL, the access point 1 does not first transmit the candidate list SL to the mobile device. Instead, the transceiver 20 of the access point 1 directly performs a channel scan based on the candidate list SL (i.e., performs a scan on channel F1 of the remote wireless access point 10A and channel F3 of the remote wireless access point 10C). The processor 30 then obtains a scan result based on the remote wireless access point 10A and the remote wireless access point 10C, which may include the SSIDs of these remote wireless access points. The processor 30 may identify whether a message obtained by the channel scan is from the remote wireless access point 10A or the remote wireless access point 10C. Furthermore, the scanning result may indicate whether these remote wireless access points are in the vicinity of access point 1, or whether these remote wireless access points are within an effective signal range, or even the range in which the signal strength of the remote wireless access points can still be read, and the neighbor list NL is generated based on this scanning result. Next, when the request sent by the mobile device is received by access point 1, access point 1 may send the neighbor list NL to the mobile device as a response so that the mobile device may connect based on the neighbor list NL. In this case, it may be confirmed whether remote wireless access point 10A and remote wireless access point 10C are in the vicinity of access point 1.

[0027] Specifically, processor 30 may determine whether remote wireless access point 10A and remote wireless access point 10C are within a preset distance (e.g., a distance within which a message can be transmitted and received by transceiver 20). For example, if remote wireless access point 10A is within the preset distance (i.e., within a range within which a message can be transmitted and received by transceiver 20) and remote wireless access point 10C is outside the preset distance (i.e., outside a range within which a message can be transmitted and received by transceiver 20), when access point 1 scans channel F1 of remote wireless access point 10A and channel F3 of remote wireless access point 10C, remote wireless access point 10A responds to access point 1, but remote wireless access point 10C does not respond to access point 1. In other words, a scan response including the SSID of remote wireless access point 10A is received by access point 1, while a scan response including the SSID of remote wireless access point 10C is not received. Processor 30 generates a neighbor list NL based on the results of the channel scan. In this case, neighbor list NL includes remote wireless access point 10A but does not include remote wireless access point 10C.

[0028] In some embodiments, both remote wireless access points 10A and 10C are within a preset distance, but remote wireless access point 10A is closer to access point 1 while remote wireless access point 10C is farther away from access point 1. In this case, when access point 1 performs a scan on channel F1 of remote wireless access point 10A and channel F3 of remote wireless access point 10C, the response signal of remote wireless access point 10A is stronger while the response signal of remote wireless access point 10C is weaker. In this case, processor 30 of access point 1 may sort remote wireless access points 10A and 10C in order of the strength of their response signals and generate neighbor list NL accordingly.

[0029] In some embodiments, after generating the candidate list SL and after the access point 1 connects with the mobile device, the access point 1 may send the candidate list SL to the mobile device as a response even if the access point 1 has not received the mobile device's request, allowing the mobile device to connect based on the candidate list SL. Next, after the access point 1 receives the mobile device's request, the transceiver 20 of the access point 1 may be configured to perform a channel scan based on the candidate list SL to determine whether the remote wireless access point 10A and the remote wireless access point 10C are in the vicinity of or within the effective signal range of the access point 1. Thereafter, the processor 30 may generate a neighbor list NL based on the results of the channel scan, allowing the access point 1 to send the neighbor list NL to the mobile device as a response. In other words, after the access point 1 receives the mobile device's request, the access point 1 performs a channel scan based on the candidate list SL and generates the neighbor list NL. Access Point 1 then also sends the neighbor list NL to the mobile device in response, allowing the mobile device to connect based on the neighbor list NL rather than the candidate list.

[0030] In some embodiments, after generating the candidate list SL and after the access point 1 is connected to the mobile device, the access point 1 transmits the candidate list SL to the mobile device even if the access point 1 has not received a request from the mobile device. The transceiver 20 of the access point 1 may directly perform a channel scan based on the candidate list SL to determine whether the remote wireless access point 10A and the remote wireless access point 10C are in the vicinity of the access point 1 or within the effective signal range of the access point 1. The processor 30 may then generate a neighbor list NL based on the results of the channel scan, and the access point 1 may transmit the neighbor list NL to the mobile device as a response when the access point 1 receives a request from the mobile device. In other words, after the access point 1 is connected to the mobile device, the access point 1 may perform a channel scan based on the candidate list SL and generate the neighbor list NL before the mobile device sends a request.

[0031] Furthermore, in some embodiments, after generating the candidate list SL and after the access point 1 connects with the mobile device, the transceiver 20 of the access point 1 does not immediately perform a channel scan based on the candidate list SL, but instead performs a channel scan based on the candidate list SL after the access point 1 receives a request from the mobile device to determine whether the remote wireless access point 10A and the remote wireless access point 10C are in the vicinity or within the effective signal range of the access point 1. The processor 30 then generates a neighbor list NL based on the result of the channel scan. The access point 1 can then send the neighbor list NL to the mobile device as a response, allowing the mobile device to connect based on the candidate list SL.

[0032] Therefore, the neighbor list NL of the present invention can provide the mobile device with information about neighbor wireless access points available for roaming. That is, the mobile device can perform channel scanning only for the remote wireless access points included in the neighbor list NL based on the neighbor list NL, rather than performing a complete channel scan for all remote wireless access points. Therefore, the time and power consumed by the mobile device in performing a complete channel scan for all access points can be effectively saved.

[0033] Furthermore, in some embodiments, when multiple remote wireless access points are included in the neighbor list NL, these access points are sorted in order of the strength of their response signals in a channel scan. Specifically, when the remote wireless access point 10A and the remote wireless access point 10C are included in the neighbor list NL, the processor 30 first determines the strength of the signals to which the remote wireless access point 10A and the remote wireless access point 10C respond while performing a channel scan on channels F1 and F3 of the remote wireless access point 10A and the remote wireless access point 10C, and then sorts the remote wireless access point 10A and the remote wireless access point 10C in order of signal strength.

[0034] In some embodiments, access point 1 may be in wired communication with one remote wireless access point or multiple remote wireless access points. For example, access point 1 may be in wired communication with remote wireless access point 10A, remote wireless access point 10B, and remote wireless access point 10C. Furthermore, when access point 1 of the present invention communicates with multiple remote wireless access points, the number of remote wireless access points is not limited.

[0035] 3 illustrates a flowchart of a method for establishing a neighbor wireless access point list (hereinafter referred to as "List Establishment Method 3") according to some embodiments of the present invention. The content illustrated in FIG. 3 is merely illustrative of some embodiments of the present invention and is not intended to limit the scope of the claimed invention.

[0036] Referring to Figure 3, the list establishment method 3 may include receiving, by an access point, one or more wireless access point messages transmitted by one remote wireless access point or multiple remote wireless access points, respectively (step 301), and generating, by the access point, a candidate wireless access point list based on the one or more wireless access point messages (step 303).

[0037] In some embodiments of list establishment method 3, one wireless access point message includes SSID information of one remote wireless access point, wireless network security settings and channel information of the one remote wireless access point, and multiple wireless access point messages include SSID information of multiple remote wireless access points, wireless network security settings and channel information of multiple remote wireless access points, respectively.

[0038] In some embodiments of List Establishment Method 3, the remote wireless access points included in the candidate wireless access point list have SSID information that matches the access point.

[0039] In some embodiments of List Establishment Method 3, the remote wireless access points included in the candidate wireless access point list further have wireless network security settings that match the access point.

[0040] In some embodiments of list establishment method 3, list establishment method 3 further includes performing, by the access point, a channel scan based on the candidate wireless access point list (step 305), and generating, by the access point, a neighbor wireless access point list based on results of the channel scan (step 307).

[0041] In some embodiments of List Establishment Method 3, remote wireless access points included in the neighbor wireless access point list respond in the channel scan.

[0042] In some embodiments of list establishment method 3, the remote wireless access points included in the neighbor wireless access point list are sorted in order of response signal strength in a channel scan.

[0043] In some embodiments of list establishment method 3, list establishment method 3 further includes sending, by the access point, a wireless access point message to the remote wireless access point or to multiple remote wireless access points.

[0044] Each embodiment of the list establishment method 3 basically corresponds to a specific embodiment of the access point 1. Therefore, although all embodiments of the list establishment method 3 have not been described in detail above, those skilled in the art can fully understand and realize all corresponding embodiments of the access point 1 simply by referring to the above description of the access point 1.

[0045] The above-described embodiments are merely examples illustrating the present invention and are not intended to limit the scope of the present invention. Any other embodiments created by modifying, changing, adjusting, and integrating the above-described embodiments are all intended to be included within the scope of the present invention, unless it is difficult for a person skilled in the art to contemplate them. The scope of the present invention is defined by the claims.

Claims

1. an access point, a transceiver configured to receive a wireless access point message or a plurality of wireless access point messages transmitted by a remote wireless access point or a plurality of remote wireless access points, respectively; a processor electrically connected to the transceiver; the processor is configured to generate a candidate wireless access point list based on the wireless access point message or messages. Access point.

2. 2. The access point of claim 1, wherein the one wireless access point message includes service set identifier (SSID) information of the one remote wireless access point, wireless network security settings and wireless channel information of the one remote wireless access point, and the multiple wireless access point messages include SSID information of the multiple remote wireless access points, wireless network security settings and wireless channel information of the multiple remote wireless access points, respectively.

3. 3. The access point of claim 2, wherein the remote wireless access points included in the candidate wireless access point list have SSID information that matches the wireless access point.

4. 4. The access point of claim 3, wherein the remote wireless access points included in the candidate wireless access point list further have wireless network security settings that match those of the access point.

5. 10. The access point of claim 1, wherein the transceiver is further configured to perform a channel scan based on the candidate wireless access point list, and the processor is further configured to generate a neighbor wireless access point list based on results of the channel scan.

6. 6. The access point of claim 5, wherein remote wireless access points included in said neighbor wireless access point list respond in said channel scan.

7. 7. The access point of claim 6, wherein the remote wireless access points included in the neighbor wireless access point list are sorted in order of response signal strength in the channel scan.

8. 10. The access point of claim 1, wherein the transceiver is further configured to transmit a wireless access point message to the remote wireless access point or to the plurality of remote wireless access points.

9. 10. The access point of claim 1, wherein the transceiver is further configured to transmit the candidate wireless access point list to a mobile device and to perform a channel scan based on the candidate wireless access point list, and the processor is further configured to generate a neighbor wireless access point list based on results of the channel scan.

10. 10. The access point of claim 1, wherein the transceiver is further configured to perform a channel scan based on the candidate wireless access point list after the access point receives a request transmitted by a mobile device, and the processor is further configured to generate a neighbor wireless access point list based on results of the channel scan.

11. 10. The access point of claim 1, wherein the transceiver is further configured to transmit the candidate wireless access point list to the mobile device upon receiving a request transmitted by the mobile device, the transceiver performing a channel scan based on the candidate wireless access point list, and the processor is further configured to generate a neighbor wireless access point list based on results of the channel scan.

12. 1. A method for establishing a candidate wireless access point list, comprising: receiving, by the access point, a wireless access point message or a plurality of wireless access point messages transmitted by a remote wireless access point or a plurality of remote wireless access points, respectively; generating, by the access point, a candidate wireless access point list based on the one wireless access point message or the plurality of wireless access point messages; method.

13. 13. The method for establishing a candidate wireless access point list of claim 12, wherein the one wireless access point message includes SSID information of the one remote wireless access point, wireless network security settings and wireless channel information of the one remote wireless access point, and the multiple wireless access point messages include SSID information of the multiple remote wireless access points, basic SSIDs, wireless network security settings and wireless channel information of the multiple remote wireless access points, respectively.

14. 14. The method of establishing a candidate wireless access point list of claim 13, wherein the remote wireless access points included in the candidate wireless access point list have SSID information that matches the access point.

15. 15. The method of establishing a candidate wireless access point list of claim 14, wherein the remote wireless access points included in the candidate wireless access point list further have wireless network security settings that match the access point.

16. 13. The method of establishing a candidate wireless access point list of claim 12, further comprising: performing, by said access point, a channel scan based on said candidate wireless access point list; and generating a neighbor wireless access point list based on results of said channel scan.

17. 17. The method of establishing a candidate wireless access point list of claim 16, wherein the remote wireless access points included in the neighbor wireless access point list respond in the channel scan.

18. 20. The method of establishing a candidate wireless access point list of claim 17, wherein the remote wireless access points included in the neighbor wireless access point list are sorted in order of response signal strength in the channel scan.

19. 13. The method of establishing a candidate wireless access point list of claim 12, further comprising transmitting, by said access point, a wireless access point message to said remote wireless access point or said plurality of remote wireless access points.

20. 13. The method of establishing a candidate wireless access point list of claim 12, further comprising: transmitting, by the access point, the candidate wireless access point list to a mobile device; performing a channel scan based on the candidate wireless access point list; and generating a neighbor wireless access point list based on results of the channel scan.

21. 13. The method of establishing a candidate wireless access point list of claim 12, further comprising: performing, by the access point, a channel scan based on the candidate wireless access point list after the access point receives a request transmitted by a mobile device; and generating a neighbor wireless access point list based on results of the channel scan.

22. 13. The method of establishing a candidate wireless access point list of claim 12, further comprising: transmitting, by the access point, the candidate wireless access point list to the mobile device simultaneously with receiving a request sent by the mobile device; performing a channel scan based on the candidate wireless access point list; and generating, by the access point, a neighbor wireless access point list based on results of the channel scan.

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