CN103619052A

CN103619052A - Method and device for wireless access

Info

Publication number: CN103619052A
Application number: CN201310651708.9A
Authority: CN
Inventors: 胡云; 毕猛; 聂昌; 刘磊; 晏伟成; 邱勇
Original assignee: China United Network Communications Group Co Ltd
Current assignee: China United Network Communications Group Co Ltd
Priority date: 2013-12-05
Filing date: 2013-12-05
Publication date: 2014-03-05

Abstract

The invention discloses a wireless access method and device, relates to the field of communication technology, and can solve the problem of signaling storm caused by non-perceptual authentication and the problem of waste of resources caused by invalid users generated by non-perceptual authentication. The method includes: the UE receives preset policy information sent by a policy control server, the preset policy information is used to describe a network suitable for UE connection; judging whether the detected WLAN complies with the preset policy information; if the detected If the WLAN complies with the preset policy information, the UE judges whether there is a data transmission requirement; if there is a data transmission requirement, the UE judges whether the current moving speed is lower than the preset speed; if the current moving speed is lower than the preset speed , the UE initiates an access request to the AC. The present invention is mainly applied in the process of network access.

Description

The method of wireless access and device

Technical field

The present invention relates to communication technical field, relate in particular to a kind of method and device of wireless access.

Background technology

Current operation level WLAN (Wireless Local Area Networks, abbreviation WLAN) conventionally adopt BAS Broadband Access Server (Broadband Remote Access Server, be called for short BRAS) network architecture that sets up separately with access controller (Access Controller is called for short AC).Wherein, BRAS is for the distribution of agreement (Internet Protocol the is called for short IP) address that interconnects between user's management and network etc.; AC is responsible for the management of wireless access node (Access Point is called for short AP) equipment.For WLAN access service is efficiently provided to user, the deployment of unaware authentication (as EAP-SIM) has been proposed.Unaware authentication can make subscriber equipment (User Equipment is called for short UE) access wlan network in the situation that of user's unaware, makes in whole WLAN user access control system, as long as there is WLAN signal user to get final product connecting system.Yet user exists and takies the phenomenon of but not using WLAN resource after unaware is linked into WLAN, these take the user of inapplicable WLAN resource is inactive users.While having a large amount of inactive users in system, there is the user of WLAN user demand cannot be linked into WLAN, cause WLAN resource utilization low.In order addressing the above problem, in prior art, by following two kinds of modes, to trigger subscriber equipment and roll off the production line:

1) receive the disconnected association of active of subscriber equipment.When subscriber equipment cuts out WLAN signal, subscriber equipment is initiatively initiated disconnected associated request.AC, after the disconnected associated request of receiving subscriber equipment, initiates user's the flow process that rolls off the production line (sending user's the request of rolling off the production line to BRAS).BRAS, after receiving the user's that AC sends the request of rolling off the production line, triggers user offline, and corresponding checking, authorization and accounting (Authentication, Authorization, Accounting are called for short AAA) server stop user's charging.

2) the every traffic carrying capacity that detects user through Preset Time interval (as 15 minutes) of the detection of BRAS to traffic carrying capacity: BRAS, if user's traffic carrying capacity is less than threshold value, is invalid associated user.BRAS initiates to roll off the production line flow process to invalid associated user, and then reaches regular arrangement IP resource, improves the utilance of IP resource.

State in realization in the process of wireless access, inventor finds that in prior art, at least there are the following problems: above-mentioned two kinds of modes are the mode that the subscriber equipment to being linked in WLAN rolls off the production line and processes, yet subscriber equipment is when access network, can produce a large amount of connection signalings, especially when capturing a plurality of WLAN, according to existing unaware authentication mode, subscriber equipment will be initiated connection request to each WLAN simultaneously, produce a large amount of control signals, WLAN is impacted.For example: user drives to travel along street, on street, have a plurality of WLAN AP to dispose, subscriber equipment can be found the AP of different ownership, because the triggering/access of unaware authentication is all based on AP, therefore subscriber equipment is according to the AP finding, constantly authentication is linked into new AP automatically.If subscriber equipment enters near AP concentration zones (Qu Minlou, even can occur thousands of accessible AP), subscriber equipment triggers a series of authentication request (all initiating access request to each AP) automatically to network.Therefore because subscriber equipment exits network, not instant again, there will be a plurality of WLAN WLAN resource that has been user equipment allocation, but subscriber equipment has left WLAN coverage, makes the WLAN wasting of resources into user equipment allocation.

In addition, in routine use, also there is following phenomenon: in public transportation hub (as subway station or Railways Stations), flow of personnel in phase commuter rush hour public transportation hub is very large, if have a large amount of subscriber equipmenies with unaware authentication in the stream of people, subscriber equipment can be initiated access request after WLAN being detected automatically.Yet WLAN website is fixed, subscriber equipment is mobile, when a subway sails into after subway station A, according to unaware authentication mechanism, a large number of users equipment in subway can be initiated access request by the WLAN in trend subway station A, now produce a large amount of control signals, occur network signal storm.Meanwhile, when this subway rolls away from after subway station A, these have just got involved in subscriber equipment in WLAN by the coverage of rapid principle WLAN, cause occurring a large amount of inactive users causing the WLAN wasting of resources in WLAN.Meanwhile, for the finite capacity of WLAN, if clear up not in time inactive users,, when next subway sails subway station A into, WLAN will not have enough IP address assignments to the subscriber equipment in described next subway, causes subscriber equipment access obstacle.

Summary of the invention

Embodiments of the invention provide a kind of method and device of wireless access, can solve the signaling storm problem being caused by unaware authentication, and the problem of the wasting of resources that causes of the inactive users that produces of unaware authentication.

For achieving the above object, embodiments of the invention adopt following technical scheme:

On the one hand, the invention provides a kind of method of wireless access, described method comprises:

Receive the preset strategy information that policy control server sends, described preset strategy information is applicable to for describing the network that UE connects;

Whether the WLAN that judgement detects meets described preset strategy information;

If the WLAN detecting meets described preset strategy information, judged whether transfer of data demand;

If there is transfer of data demand, judge that whether current translational speed is lower than pre-set velocity;

If described current translational speed, lower than pre-set velocity, is initiated access request to AC.

On the other hand, the present invention also provides a kind of device of wireless access, it is characterized in that, described device comprises:

Receiving element, the preset strategy information sending for receiving policy control server, described preset strategy information is applicable to for describing the network that UE connects;

The first judging unit, for judging whether the WLAN detecting meets the described preset strategy information that described receiving element receives;

The second judging unit, while meeting described preset strategy information for judging when described the first judging unit the WLAN detecting, has judged whether transfer of data demand;

The 3rd judging unit, for when described the second judging unit has been judged transfer of data demand, judges that whether current translational speed is lower than pre-set velocity;

Transmitting element, for when described the 3rd judging unit is judged described current translational speed lower than pre-set velocity, initiates access request to AC.

First the method for wireless access provided by the invention and device, can judge whether the WLAN detecting meets the regulation of preset strategy information; Secondly, when meeting, judged whether transfer of data demand; Again, when having transfer of data demand, judge that whether current translational speed is lower than pre-set velocity, last, when described current translational speed is during whether lower than pre-set velocity, to AC, initiate access request.In prior art, when WLAN being detected, to AC, send access request immediately.In the present invention, by three decision operation, make UE lower than pre-set velocity and while thering is transfer of data, to the WLAN that meets preset strategy information, initiate access request at present speed, reduce the number of times that sends of access request, avoid blindly initiating access request, and then solve the signaling storm problem being caused by unaware authentication, and the problem of the wasting of resources that causes of the inactive users that produces of unaware authentication.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the flow chart of the method for first wireless access in the embodiment of the present invention;

Fig. 2 is the flow chart of the method for second wireless access in the embodiment of the present invention;

Fig. 3 is the flow chart of the method for the 3rd wireless access in the embodiment of the present invention;

Fig. 4 is the flow chart of the method for the 4th wireless access in the embodiment of the present invention;

Fig. 5 is the flow chart of the method for the 5th wireless access in the embodiment of the present invention;

Fig. 6 is the structural representation of the device of a wireless access in the embodiment of the present invention;

Fig. 7 is the structural representation of the device of another wireless access in the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

The embodiment of the present invention provides a kind of method of wireless access, and described method is applied in subscriber equipment, and as shown in Figure 1, described method comprises:

Step 101, UE receive the preset strategy information that policy control server sends, and preset strategy information is applicable to for describing the network that UE connects.

Policy control server by utilizing access network discovery and selection function (ANDSF) are issued to UE by preset strategy information (operation strategy), UE is before the AP to WLAN initiates access request, in conjunction with preset strategy information to current detection to the access information of AP judge, determine whether WLAN corresponding to AP that current detection arrives is applicable to UE access.Wherein, by the message in access network vlan query protocol VLAN (ANQP agreement), carry the access information of AP.

Preset strategy information can be but is not limited to following information:

The threshold value threshold of the signal strength signal intensity indication of reading authority (subscription validity) agreement, market, place group/type (Venue Group/Type), location geographical position and reception (Received Signal Strength Indication is called for short RSSI) etc.

Whether the WLAN that step 102, judgement detect meets preset strategy information.

By market, place group/type (Venue Group/Type), can determine whether to initiate access request according to the type of AP.As UE only supports 3GPP network, do not support LTE network, if network is LTE network described in AP, according to Venue Group/Type, cancels and initiate WLAN access request.By geographical position (location), can limit UE and initiate the access request of wireless network when which is regional, if location is Beijing, if UE current location is Shenzhen, cancels and initiate WLAN access request.By the threshold value (threshold) of RSSI, cancel the AP initiation WLAN access request lower than threshold value to signal strength signal intensity.ANQP is handed down to UE by AP attaching information by message such as Beacon, and UE determines whether to initiate WLAN access request to current AP according to AP attaching information.

If the WLAN that step 103 detects meets preset strategy information, UE has judged whether transfer of data demand.

Concrete, according to the network type of current network, specified data transmission identifier;

According to described transfer of data identifier, determined whether transfer of data.

If the network type of current network is WCDMA/HSPA, using the RRC state information (UMTS_RRC_Mode) of UMTS network as transfer of data identifier; If the network type of current network is LTE, using the RRC state information (LTE_RRC_Mode) of LTE network as transfer of data identifier.Concrete steps are as shown in Figure 2:

Step 201, obtain the network at the current place of UE, if WCDMA/HSPA performs step 202a, if LTE performs step 202b.

Step 202a, obtain the RRC state information (UMTS_RRC_Mode) of UMTS network, execution step 203a.

Step 202b, obtain the RRC state information (LTE_RRC_Mode) of LTE network, execution step 203b.

Step 203a, judge whether described UMTS_RRC_Mode is CELL_PCH or URA_PCH or CELL_FACH, if it is define transfer of data demand (Traffic_activity=1), if not determining without transfer of data demand (Traffic_activity=0).

Step 203b, judge whether described LTE_RRC_Mode is Idle, if it is determine without transfer of data demand (Traffic_activity=0), if not defining transfer of data demand (Traffic_activity=1).

If step 104 has transfer of data demand, UE judges that whether current translational speed is lower than pre-set velocity.

Preferably, as shown in Figure 3, for the UE that is connected to LTE network, can determine current translational speed by following manner:

Step 301, obtain default duration t and switching times n, switching times is switched to the number of times of idle condition and is switched to the summation of the number of times of connected state for UE in default duration.

1) number of times that is switched to Idle state can obtain by following manner: when UE state is Idle state, trigger re-selecting cell flow process, produce the re-selecting cell time in the process of re-selecting cell.Timer reads default duration t, and the quantity of adding up the re-selecting cell time in default duration t is defined as the quantitative value of statistics to be switched to the number of times of Idle state.

2) number of times that is switched to connected state can obtain by following manner: when UE state is switched to connected state, and triggering cell switching flow.Timer reads default duration t, in default duration t, adds up switching times, the switching times of statistics is determined to the number of times that is switched to connected state.

The number of times that is switched to Idle state is added up with the number of times that is switched to connected state, obtain switching times.

Step 302, the default duration t of basis and switching times n and radius of society r estimate current translational speed.

Default duration t and radius of society r are stored in memory, directly transfer default duration t and radius of society r from memory.

According to current time and switching times and radius of society, estimate that current translational speed can adopt following formula: v=r*n/t.

If radius of society is 1km, switching times is 5, and duration is 1 hour, and the current translational speed estimating is 5km/h.

If the current translational speed of step 105 is lower than pre-set velocity, UE initiates access request to AC.

Pre-set velocity is set to a threshold value or a plurality of threshold value.If translational speed is less than predetermined threshold value when being set to a threshold value, UE initiates access request to AC.While being set to a plurality of threshold value, if current translational speed is arranged in certain threshold interval, UE initiates access request to AC.Wherein, two of threshold interval end points are adjacent two threshold values in a plurality of threshold values.

First the method for the wireless access that the embodiment of the present invention provides, can judge whether the WLAN detecting meets the regulation of preset strategy information; Secondly, when meeting, judged whether transfer of data demand; Again, when having transfer of data demand, judge that whether current translational speed is lower than pre-set velocity, last, when described current translational speed is during whether lower than pre-set velocity, to AC, initiate access request.In prior art, when WLAN being detected, to AC, send access request immediately.In the present invention, by three decision operation, make UE lower than pre-set velocity and while thering is transfer of data, to the WLAN that meets preset strategy information, initiate access request at present speed, reduce the number of times that sends of access request, avoid blindly initiating access request, and then solve the signaling storm problem being caused by unaware authentication, and the problem of the wasting of resources that causes of the inactive users that produces of unaware authentication.

The embodiment of the present invention also provides a kind of method of wireless access, as to the further illustrating of method shown in Fig. 1, as shown in Figure 4:

The preset strategy information that step 101, reception policy control server send, comprising:

Step 101a, the presetting message of inquiring about in ANQP agreement by access network receive AP attaching information, and AP attaching information is for describing the network type that AP is corresponding.

Presetting message comprises the message such as Beacon.

Whether the WLAN that step 102, judgement detect meets preset strategy information, specifically comprises:

If step 102a AP attaching information meets preset strategy information, determine that the WLAN detecting meets preset strategy information.

In preset strategy information, can comprise market, place group/type (Venue Group/Type).By AP attaching information, can determine market group or the type described in AP, if the attaching information of AP is the A of operator, yet market, place group/type (Venue Group/Type) is the B of operator, determine that the WLAN detecting does not meet preset strategy information.If ground market group/type (Venue Group/Type) is the A of operator, determine that the WLAN detecting meets preset strategy information.

The method of the wireless access that the embodiment of the present invention provides, can to AP attaching information, judge by preset strategy information (market group/type), determine whether the WLAN detecting meets preset strategy information, and then filter out the WLAN that is applicable to UE access, improve access efficiency.

The embodiment of the present invention also provides a kind of method of wireless access, as to the further illustrating of method shown in Fig. 1, as shown in Figure 5:

The preset strategy information that step 101, reception policy control server send, also comprises:

The signal strength threshold that step 101b, reception policy control server send, signal strength threshold is applicable to carrying out associated signal strength signal intensity minimum value for describing.

Signal strength threshold can be recorded by passing threshold (threshold).

Step 102, wherein, whether the WLAN that judgement detects meets preset strategy information, also comprises:

Step 102b1, obtain the received signal strength indicator RSSI of AP, in signal strength signal intensity indication, carry the signal strength signal intensity of AP.

If the signal strength signal intensity of step 102b2 AP is greater than signal strength threshold, determine that the WLAN detecting meets preset strategy information.

The method of the wireless access that the embodiment of the present invention provides, whether the signal strength signal intensity that can judge AP is greater than the signal strength threshold in preset strategy information, if be greater than, determine that the WLAN detecting meets preset strategy information, and then filter out AP that signal strength signal intensity is strong as access base station, improve access efficiency.

The embodiment of the present invention also provides a kind of device of wireless access, and as shown in Figure 6, described device is arranged in subscriber equipment, and described device comprises:

Receiving element 61, the preset strategy information sending for receiving policy control server, described preset strategy information is applicable to for describing the network that UE connects.

The first judging unit 62, for judging whether the WLAN detecting meets the described preset strategy information that described receiving element 61 receives.

The second judging unit 63, while meeting described preset strategy information for judging when described the first judging unit 62 WLAN detecting, has judged whether transfer of data demand.

The 3rd judging unit 64, for when described the second judging unit 63 has been judged transfer of data demand, judges that whether current translational speed is lower than pre-set velocity.

Transmitting element 65, for when described the 3rd judging unit 64 is judged described current translational speed lower than pre-set velocity, initiates access request to AC.

Further, as shown in Figure 7, described device also comprises velocity estimation unit 66, for:

If be connected to LTE network:

Obtain default duration and switching times, described switching times is the number of times and the summation that is switched to the number of times of connected state that UE is switched to idle condition in default duration.

According to described default duration and described switching times and radius of society, estimate current translational speed.

Described the 3rd judging unit 64 also for, when described the second judging unit 63 has been judged transfer of data demand, judge that whether the current translational speed of described velocity estimation unit 66 estimation is lower than pre-set velocity.

Further, described the second judging unit 63 also for:

According to the network type of current network, specified data transmission identifier.

According to described transfer of data identifier, determined whether transfer of data demand.

Further, described receiving element 61 also for, by access network, inquire about presetting message in ANQP agreement and receive AP attaching information, described AP attaching information is for describing the network type that AP is corresponding.

Described the first judging unit 62 also for: if the described AP attaching information that described receiving element 61 receives meets preset strategy information, determine that the WLAN detecting meets described preset strategy information.

Further, described receiving element 61 also for, receive the signal strength threshold that policy control server sends, described signal strength threshold is applicable to carrying out associated signal strength signal intensity minimum value for describing.

Described the first judging unit 62 also for:

Obtain the received signal strength indicator RSSI of AP, in described signal strength signal intensity indication, carry the signal strength signal intensity of AP.

If the signal strength signal intensity of AP is greater than the described signal strength threshold that described receiving element 61 receives, determine that the WLAN detecting meets the preset strategy information that described receiving element 61 receives.

Those skilled in the art can be well understood to, for convenience and simplicity of description, only the division with above-mentioned each functional module is illustrated, in practical application, can above-mentioned functions be distributed and by different functional modules, completed as required, the internal structure that is about to device is divided into different functional modules, to complete all or part of function described above.The system of foregoing description, the specific works process of device and unit, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by the described protection range with claim.

Claims

1. A method for wireless access, characterized in that the method comprises:

receiving preset policy information sent by the policy control server, where the preset policy information is used to describe a network suitable for UE connection;

Judging whether the detected WLAN complies with the preset policy information;

If the detected WLAN complies with the preset policy information, then determine whether there is a demand for data transmission;

If there is a demand for data transmission, it is judged whether the current moving speed is lower than the preset speed;

If the current moving speed is lower than the preset speed, an access request is initiated to the AC.

2. The wireless access method according to claim 1, wherein before said judging whether the current moving speed is lower than a preset speed, said method further comprises:

If connected to an LTE network:

Obtaining a preset duration and a number of switching times, where the number of switching times is the sum of the number of times the UE switches to the idle state and the number of times the UE switches to the connected state within the preset time length;

Estimate the current moving speed according to the preset duration, the number of handovers and the cell radius.

3. The method for wireless access according to claim 2, wherein said judging whether there is a data transmission requirement specifically includes:

Determine the data transmission identifier according to the network type of the current network;

Whether there is data transmission is determined according to the data transmission identifier.

4. The method for wireless access according to claim 3, wherein the receiving the preset policy information sent by the policy control server further comprises: receiving the AP ownership by querying the preset message in the ANQP protocol through the access network Information, the AP attribution information is used to describe the network type corresponding to the AP;

The judging whether the detected WLAN complies with the preset policy information further includes: if the AP affiliation information complies with the preset policy information, determining that the detected WLAN complies with the preset policy information.

5. The wireless access method according to claim 3 or 4, wherein receiving the preset policy information sent by the policy control server further comprises:

The receiving policy controls the signal strength threshold sent by the server, and the signal strength threshold is used to describe the minimum signal strength suitable for association;

The determining whether the detected WLAN complies with the preset policy information also includes:

Obtaining the received signal strength indicator RSSI of the AP, the signal strength indicator carrying the signal strength of the AP;

If the signal strength of the AP is greater than the signal strength threshold, it is determined that the detected WLAN complies with the preset policy information.

6. A wireless access device, characterized in that the device comprises:

A receiving unit, configured to receive preset policy information sent by a policy control server, where the preset policy information is used to describe a network suitable for UE connection;

a first judging unit, configured to judge whether the detected WLAN complies with the preset policy information received by the receiving unit;

The second judging unit is configured to judge whether there is a data transmission requirement when the first judging unit judges that the detected WLAN complies with the preset policy information;

A third judging unit, configured to judge whether the current moving speed is lower than a preset speed when the second judging unit judges that there is a need for data transmission;

A sending unit, configured to initiate an access request to the AC when the third judging unit judges that the current moving speed is lower than a preset speed.

7. The wireless access device according to claim 6, characterized in that the device further comprises a speed estimation unit, configured to:

If connected to an LTE network:

Estimating the current moving speed according to the preset duration, the number of handovers and the cell radius;

The third judging unit is further configured to judge whether the current moving speed estimated by the speed estimating unit is lower than a preset speed when the second judging unit judges that there is a need for data transmission.

8. The wireless access device according to claim 7, wherein the second judging unit is further configured to:

Determine whether there is a data transmission requirement according to the data transmission identifier.

9. The device for wireless access according to claim 8, wherein the receiving unit is further configured to query the preset message in the ANQP protocol through the access network to receive AP affiliation information, and the AP affiliation information is used Used to describe the network type corresponding to the AP;

The first judging unit is further configured to: if the AP affiliation information received by the receiving unit complies with preset policy information, determine that the detected WLAN complies with the preset policy information.

10. The wireless access device according to claim 8 or 9, wherein the receiving unit is further configured to receive a signal strength threshold sent by a policy control server, and the signal strength threshold is used to describe The minimum value of the signal strength;

The first judging unit is also used for:

If the signal strength of the AP is greater than the signal strength threshold received by the receiving unit, it is determined that the detected WLAN complies with the preset policy information received by the receiving unit.