CN106961690B - User service-aware heterogeneous network switching method and mobile terminal - Google Patents

User service-aware heterogeneous network switching method and mobile terminal Download PDF

Info

Publication number
CN106961690B
CN106961690B CN201710169523.2A CN201710169523A CN106961690B CN 106961690 B CN106961690 B CN 106961690B CN 201710169523 A CN201710169523 A CN 201710169523A CN 106961690 B CN106961690 B CN 106961690B
Authority
CN
China
Prior art keywords
access point
wifi access
mobile terminal
bandwidth
wifi
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710169523.2A
Other languages
Chinese (zh)
Other versions
CN106961690A (en
Inventor
程良伦
黄振杰
王涛
佘爽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong University of Technology
Original Assignee
Guangdong University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong University of Technology filed Critical Guangdong University of Technology
Priority to CN201710169523.2A priority Critical patent/CN106961690B/en
Publication of CN106961690A publication Critical patent/CN106961690A/en
Application granted granted Critical
Publication of CN106961690B publication Critical patent/CN106961690B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0088—Scheduling hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point

Abstract

The embodiment of the invention discloses a heterogeneous network switching method for user service perception and a mobile terminal, which can be used for solving the problem of seamless switching between a WiFi network and a WiMAX network in the field of heterogeneous networks. The embodiment of the invention provides a method for self-adaptive switching of user service perception aiming at a WiMAX-WiFi heterogeneous network on the basis of an IEEE 802.21MIH framework, which allows connection of as many terminal users as possible on the premise of ensuring network load balance, thereby improving network capacity, resource utilization rate and network cooperation efficiency as much as possible, and simultaneously realizing information interaction between two networks.

Description

User service-aware heterogeneous network switching method and mobile terminal
Technical Field
The invention relates to the field of mobile terminal heterogeneous network switching, in particular to a user service-aware heterogeneous network switching method and a mobile terminal.
Background
The heterogeneous network is a network with multiple access technologies, and the wireless networks have a competitive relationship, and more importantly, the purpose of cooperative work is achieved. But the main challenges faced by current heterogeneous network handover include: the explosive growth of mobile data traffic leads to a continuous increase in network load; the service and flow loads between the hot spot areas are unbalanced, and the utilization rate of network resources is low; different types of network evolution make the network structure become more and more complex and the network coordination efficiency is not good.
The load imbalance caused by unreliable heterogeneous network handover will result in reduced resource utilization, and thus the quality of experience (QoE) of the user will not be as expected. Most of the existing switching methods are considered from the user perspective or from the network perspective, load imbalance exists or more user accesses cannot be accommodated; although two aspects are considered, the network utilization is low due to the complicated handover delay and handover signaling overhead.
Therefore, it is a technical problem to be solved by those skilled in the art to provide a method capable of effectively solving the problem of low network utilization ratio caused by handover delay and complex handover signaling overhead in a heterogeneous network.
Disclosure of Invention
The embodiment of the invention provides a heterogeneous network switching method and a mobile terminal for user service perception, which realize the improvement of network load rate on the premise of ensuring the QoS/QoE of a user through an admission control mechanism and a load balancing scheduler.
The embodiment of the invention provides a heterogeneous network switching method for user service perception, which comprises the following steps:
s1: after scanning the signal intensity of each WiFi access point, the mobile terminal sends a first access request to the WiFi access point;
s2: the mobile terminal judges whether the signal strength of the WiFi access point is larger than a preset received signal strength indication threshold value or not, if so, S3 is executed, and if not, S4 is executed;
s3: the mobile terminal selects WiFi access points to send access requests according to the signal intensity sequence, accesses the WiFi access points after obtaining the adding permission sent by the WiFi access points according to the admission control mechanism, and then executes S5;
s4: the mobile terminal sends an access request to the WiMAX base station, accesses the WiMAX base station after obtaining the access permission of the WiMAX base station according to the access control mechanism, and executes S6 after a preset time period;
s5: after the mobile terminal judges that a load scheduling program needs to be executed at the accessed WiFi access point and executes the load scheduling program at the accessed WiFi access point, acquiring a switchable WiFi access point list sent by the accessed WiFi access point, and sending an access request to the WiFi access point with the maximum signal intensity in the switchable WiFi access point list;
s6: after the WiMAX base station executes the load scheduling program, the mobile terminal acquires the switchable WiFi access point list sent by the WiMAX base station and sends an access request to the WiFi access point with the maximum signal intensity in the switchable WiFi access point list.
Preferably, step S1 is preceded by:
s0: the mobile terminal obtains the setting instruction, sets the received signal strength indication threshold value according to the setting instruction, and obtains the preset received signal strength indication threshold value.
Preferably, the method for switching a user service-aware heterogeneous network provided in the embodiment of the present invention further includes:
after the mobile terminal judges that the signal strength of the accessed WiFi access point is smaller than a preset received signal strength indication threshold value according to the moving condition, and after the accessed WiFi access point executes a load scheduling program, a switchable WiFi access point list sent by the accessed WiFi access point is obtained, and an access request is sent to the WiFi access point with the maximum signal strength in the switchable WiFi access point list.
Preferably, the admission control mechanism specifically includes:
unifying the QoS requirement of WiMAX network communication and the QoS requirement of Wifi network communication into a new QoS requirement of communication, and confirming the jitter requirement of communication and the time delay requirement of communication according to the new QoS requirement of communication;
acquiring an upper bandwidth reservation limit and a lower bandwidth reservation limit, enabling the upper bandwidth reservation limit and the lower bandwidth reservation limit to meet a preset first requirement according to the jitter requirement of the communication class, and enabling the average bandwidth of the communication class to meet a preset second requirement according to the time delay requirement of the communication class;
acquiring a total bandwidth, and calculating a bandwidth reservation upper limit, a bandwidth reservation lower limit and the total bandwidth to obtain a residual bandwidth;
acquiring the required occupied bandwidth of the communication class of the mobile terminal and the occupied bandwidth of the communication class, judging whether the required occupied bandwidth of the communication class of the mobile terminal, the occupied bandwidth of the communication class and the reserved lower limit of the bandwidth of the communication class meet preset third requirements, if so, allowing the mobile terminal to access, and if not, allowing the mobile terminal to access and executing a load scheduling program after judging that the difference between the total bandwidth and the occupied bandwidth of the communication class is larger than the residual bandwidth.
Preferably, the load scheduler specifically includes:
sending a switching request to an accessed mobile terminal;
acquiring an available WiFi access point list sent by an accessed mobile terminal, and sending residual load request information to each WiFi access point corresponding to the available WiFi access point list;
after the residual load condition information sent by each WiFi access point corresponding to the available WiFi access point list is obtained, a switchable WiFi access point list is established according to the residual load condition information, and the switchable WiFi access point list is sent to the mobile terminal.
Preferably, an embodiment of the present invention further provides a mobile terminal, including:
the scanning unit is used for sending a first access request to the WiFi access point after the signal intensity of each WiFi access point is scanned;
the first judgment unit is used for judging whether the signal strength of the WiFi access point is larger than a preset received signal strength indication threshold value or not, if so, the first access unit is triggered, and if not, the second access unit is triggered;
the first access unit is used for selecting WiFi access points to send access requests according to the signal intensity sequence, accessing the WiFi access points until the access permission sent by the WiFi access points according to the admission control mechanism is obtained, and triggering the first sending unit;
the second access unit is used for sending an access request to the WiMAX base station, accessing the WiMAX base station after obtaining the access permission of the WiMAX base station according to the access control mechanism, and triggering the second sending unit after a preset time period;
the first sending unit is used for acquiring a switchable WiFi access point list sent by the accessed WiFi access point after the accessed WiFi access point judges that a load scheduling program needs to be executed and the accessed WiFi access point executes the load scheduling program, and sending an access request to the WiFi access point with the maximum signal intensity in the switchable WiFi access point list;
and the second sending unit is used for acquiring the switchable WiFi access point list sent by the WiMAX base station after the WiMAX base station executes the load scheduling program, and sending an access request to the WiFi access point with the maximum signal strength in the switchable WiFi access point list.
Preferably, a mobile terminal provided in the embodiment of the present invention further includes:
and the setting unit is used for acquiring the setting instruction, setting the received signal strength indication threshold according to the setting instruction and acquiring the preset received signal strength indication threshold.
Preferably, a mobile terminal provided in the embodiment of the present invention further includes:
and the second judging unit is used for acquiring a switchable WiFi access point list sent by the accessed WiFi access point after judging that the signal strength of the accessed WiFi access point is smaller than a preset received signal strength indication threshold value according to the moving condition and executing a load scheduling program on the accessed WiFi access point, and sending an access request to the WiFi access point with the maximum signal strength in the switchable WiFi access point list.
According to the technical scheme, the embodiment of the invention has the following advantages:
the embodiment of the invention provides a user service-aware heterogeneous network switching method and a mobile terminal, wherein the user service-aware heterogeneous network switching method comprises the following steps: s1: after scanning the signal intensity of each WiFi access point, the mobile terminal sends a first access request to the WiFi access point; s2: the mobile terminal judges whether the signal strength of the WiFi access point is larger than a preset received signal strength indication threshold value or not, if so, S3 is executed, and if not, S4 is executed; s3: the mobile terminal selects WiFi access points to send access requests according to the signal intensity sequence, accesses the WiFi access points after obtaining the adding permission sent by the WiFi access points according to the admission control mechanism, and then executes S5; s4: the mobile terminal sends an access request to the WiMAX base station, accesses the WiMAX base station after obtaining the access permission of the WiMAX base station according to the access control mechanism, and executes S6 after a preset time period; s5: after the mobile terminal judges that a load scheduling program needs to be executed at the accessed WiFi access point and executes the load scheduling program at the accessed WiFi access point, acquiring a switchable WiFi access point list sent by the accessed WiFi access point, and sending an access request to the WiFi access point with the maximum signal intensity in the switchable WiFi access point list; s6: after the WiMAX base station executes the load scheduling program, the mobile terminal acquires the switchable WiFi access point list sent by the WiMAX base station and sends an access request to the WiFi access point with the maximum signal intensity in the switchable WiFi access point list. The embodiment of the invention aims at the WiMAX-WiFi heterogeneous network based on the IEEE 802.21MIH framework, and allows the connection of as many terminal users as possible on the premise of ensuring the network load balance, thereby improving the network capacity, the resource utilization rate and the network cooperation efficiency as much as possible and simultaneously realizing the information interaction between the two networks.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic flowchart of a user service aware heterogeneous network handover method according to an embodiment of the present invention;
fig. 2 is another schematic flow chart of a user service-aware heterogeneous network handover method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a heterogeneous network switching method and a mobile terminal for user service perception, which realize the improvement of network load rate on the premise of ensuring the QoS/QoE of a user through an admission control mechanism and a load balancing scheduler.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of a method for switching a user service-aware heterogeneous network according to an embodiment of the present invention includes:
101. after scanning the signal intensity of each WiFi access point, the mobile terminal sends a first access request to the WiFi access point;
102. the mobile terminal judges whether the signal intensity of the WiFi access point is larger than a preset received signal intensity indication threshold value or not, if so, the step 103 is executed, and if not, the step 104 is executed;
103. the mobile terminal selects WiFi access points to send access requests according to the signal intensity sequence, and accesses the WiFi access points until the access permission sent by the WiFi access points according to the admission control mechanism is obtained, and then 105 is executed;
104. the mobile terminal sends an access request to the WiMAX base station, accesses the WiMAX base station after obtaining the access permission of the WiMAX base station according to the access control mechanism, and executes 106 after a preset time period;
105. after the mobile terminal judges that a load scheduling program needs to be executed at the accessed WiFi access point and executes the load scheduling program at the accessed WiFi access point, acquiring a switchable WiFi access point list sent by the accessed WiFi access point, and sending an access request to the WiFi access point with the maximum signal intensity in the switchable WiFi access point list;
106. after the WiMAX base station executes the load scheduling program, the mobile terminal acquires the switchable WiFi access point list sent by the WiMAX base station and sends an access request to the WiFi access point with the maximum signal intensity in the switchable WiFi access point list.
The embodiment of the invention provides a user service-aware heterogeneous network switching method, which can be used for solving the problem of seamless switching between a WiFi network and a WiMAX network in the field of heterogeneous networks. The method comprises the steps that firstly, an MN (mobile terminal) sets an RSSI (received signal strength indicator) threshold value according to a moving condition; when an MN (mobile terminal) requests to access a WiFiAP (access point) for the first time, the MN (mobile terminal) scans the RS (signal strength) of each WiFiAP, when the WiFiAP (access point) meets the RS (signal strength) > RSSI (received signal strength indication threshold), the MN (mobile terminal) sequentially selects the WiFiAP (access point) to request to be added according to the size sequence of the RS (signal strength) according to an admission control mechanism, and judges whether a load balancing scheduling program needs to be executed after the WiFiAP (access point) is successfully added; if no WiFiAP (access point) can be accessed, executing a request to join a WiMAX BS (base station), judging whether to allow an MN (mobile terminal) to join according to an admission control mechanism by the WiMAX BS (base station), and when the WiMAX BS (base station) has the MN (mobile terminal) to be accessed, after a fixed time interval t, the WiMAX BS (base station) executing a load balancing scheduling program to check whether the switch from the WiMAX BS (base station) to the WiFiAP can be executed. When the MN (mobile terminal) moves, whether the RS (signal strength) is smaller than the RSSI (received signal strength indication threshold) or not is judged, and if the RS (signal strength) is smaller than the RSSI, a load scheduling program is executed. When the moving condition of MN (mobile terminal) changes, the RSSI (received signal strength indication threshold) is reset, then whether the RS (signal strength) is smaller than the RSSI (received signal strength indication threshold) is judged, and if the RS (signal strength) is smaller than the RSSI (received signal strength indication threshold), a load scheduling program is executed. The method has the innovation point that the load rate of the network is improved on the premise that the QoS/QoE of a user is ensured by the provided admission control mechanism and the load balancing scheduling program.
Referring to fig. 2, another embodiment of a method for switching a user service-aware heterogeneous network according to an embodiment of the present invention includes:
201. the mobile terminal obtains a setting instruction, sets a received signal strength indication threshold value according to the setting instruction, and obtains a preset received signal strength indication threshold value;
202. after scanning the signal intensity of each WiFi access point, the mobile terminal sends a first access request to the WiFi access point;
203. the mobile terminal judges whether the signal intensity of the WiFi access point is larger than a preset received signal intensity indication threshold value or not, if so, 204 is executed, and if not, 205 is executed;
204. the mobile terminal selects WiFi access points to send access requests according to the signal intensity sequence, accesses the WiFi access points after obtaining the adding permission sent by the WiFi access points according to the admission control mechanism, and then executes 206;
205. the mobile terminal sends an access request to the WiMAX base station, accesses the WiMAX base station after obtaining the access permission of the WiMAX base station according to the access control mechanism, and executes 207 after a preset time period;
206. after the mobile terminal judges that a load scheduling program needs to be executed at the accessed WiFi access point and executes the load scheduling program at the accessed WiFi access point, acquiring a switchable WiFi access point list sent by the accessed WiFi access point, and sending an access request to the WiFi access point with the maximum signal intensity in the switchable WiFi access point list;
207. after the WiMAX base station executes the load scheduling program, the mobile terminal acquires the switchable WiFi access point list sent by the WiMAX base station and sends an access request to the WiFi access point with the maximum signal intensity in the switchable WiFi access point list.
Further, the method for switching a user service-aware heterogeneous network provided in the embodiment of the present invention further includes:
208. after the mobile terminal judges that the signal strength of the accessed WiFi access point is smaller than a preset received signal strength indication threshold value according to the moving condition, and after the accessed WiFi access point executes a load scheduling program, a switchable WiFi access point list sent by the accessed WiFi access point is obtained, and an access request is sent to the WiFi access point with the maximum signal strength in the switchable WiFi access point list. It should be noted that, when the mobile terminal moves along with the movement, the step 208 is executed after the signal strength of the accessed WiFi access point is determined to be smaller than the preset received signal strength indication threshold.
Further, the admission control mechanism specifically includes:
unifying the QoS requirement of WiMAX network communication and the QoS requirement of Wifi network communication into a new QoS requirement of communication, and confirming the jitter requirement of communication and the time delay requirement of communication according to the new QoS requirement of communication;
acquiring an upper bandwidth reservation limit and a lower bandwidth reservation limit, enabling the upper bandwidth reservation limit and the lower bandwidth reservation limit to meet a preset first requirement according to the jitter requirement of the communication class, and enabling the average bandwidth of the communication class to meet a preset second requirement according to the time delay requirement of the communication class;
acquiring a total bandwidth, and calculating a bandwidth reservation upper limit, a bandwidth reservation lower limit and the total bandwidth to obtain a residual bandwidth;
acquiring the required occupied bandwidth of the communication class of the mobile terminal and the occupied bandwidth of the communication class, judging whether the required occupied bandwidth of the communication class of the mobile terminal, the occupied bandwidth of the communication class and the reserved lower limit of the bandwidth of the communication class meet preset third requirements, if so, allowing the mobile terminal to access, and if not, allowing the mobile terminal to access and executing a load scheduling program after judging that the difference between the total bandwidth and the occupied bandwidth of the communication class is larger than the residual bandwidth.
Further, the load scheduler specifically includes:
sending a switching request to an accessed mobile terminal;
acquiring an available WiFi access point list sent by an accessed mobile terminal, and sending residual load request information to each WiFi access point corresponding to the available WiFi access point list;
after the residual load condition information sent by each WiFi access point corresponding to the available WiFi access point list is obtained, a switchable WiFi access point list is established according to the residual load condition information, and the switchable WiFi access point list is sent to the mobile terminal.
In order to facilitate understanding, a specific application scenario is described below for an application of a user service-aware heterogeneous network handover method, where the application scenario includes:
the WiMAX network has a wide coverage area, and in the WiMAX coverage area, a plurality of WiFi access points are distributed, and each WiFi access point has a limited coverage area and can be mutually overlapped.
The whole process of the application example is as follows:
a. MN (mobile terminal) sets RSSI (received signal strength indicator) threshold value according to the moving condition; before MN (mobile terminal) requests to access WiFiAP (access point) for the first time, MN (mobile terminal) scans RS (signal strength) of each WiFiAP;
b. when WiFiAP (access point) meets RS (signal strength) > RSSI (received signal strength indication threshold), MN (mobile terminal) sequentially selects WiFiAP (access point) to request to join according to the size sequence of RS (signal strength) according to an admission control mechanism, after the WiFiAP (access point) is successfully joined, the WiFiAP (access point) judges whether a load balancing scheduling program needs to be executed, it needs to be explained that a plurality of WiFi access points which are larger than the received signal strength indication threshold are selected, the WiFi access point with the strongest signal is selected to request to join, if the WiFi access point executes the admission control mechanism, the mobile terminal is allowed to be joined, the mobile terminal is directly joined, if the WiFi access point does not allow the mobile terminal to join, the mobile terminal selects a second WiFi access point (signal strength is second strong) to request to be joined, and so on in turn; if no WiFi access point meeting the requirements is available at the beginning or the WiFi access point meeting the requirements is not allowed to be accessed, directly requesting to access the WiMAX base station;
c. if no WiFiAP (access point) can be accessed, executing a request to join a WiMAX BS (base station), judging whether to allow an MN (mobile terminal) to join according to an admission control mechanism by the WiMAX BS (base station), and when the WiMAX BS (base station) has the MN (mobile terminal) to be accessed, after a fixed time interval t, the WiMAX BS (base station) executing a load balancing scheduling program to check whether the switch from the WiMAX BS (base station) to the WiFiAP can be executed. It should be noted that after accessing the WiMAX base station, the load scheduling procedure should be executed after an interval t, and if the load scheduling procedure is not successful, the load scheduling procedure is executed after an interval t until the wifi access point is added. Since the WiFi access point is switched to when the WiMAX is accessed immediately after the WiFi access point is not qualified, there may be a case where there is no qualified access point, and this case generally occurs, which indicates that the total bandwidth of the heterogeneous network is full or that the WiFi access point in the part of the mobile terminal is close to the upper limit of the load.
In step b and step c, when executing the load scheduling procedure, firstly, the WiFi access point or the WiMAX base station requests the mobile terminal to send a WiFi list larger than a threshold, and then the WiFi access point and the WiMAX base station select a WiFi access point meeting the requirement to form a list and send the list back to the mobile terminal.
Further, if the RS (signal strength) is smaller than the RSSI (received signal strength indication threshold) during the movement of the MN (mobile terminal), the load scheduling procedure is executed.
Furthermore, if the moving situation of the MN (mobile terminal) changes, it may be determined whether the RS (signal strength) is smaller than the RSSI (received signal strength indication threshold) by resetting the RSSI (received signal strength indication threshold) and then executing the load scheduling procedure.
In this application example, the moving condition includes velocity v, distance r from the nearest AP, and an included angle θ formed by the velocity direction and the nearest AP, and the RSSI threshold is calculated according to the following formula:
RSSI＝x*v+y*r+z*θ
where x, y and z are weighting factors.
An admission control mechanism comprising the steps of:
① performing one-to-one mapping according to QoS requirements of different communication classes between the WiMAX and WiFi networks (it should be noted that the mapping here refers to unifying the same communication classes of the WiMAX network and WiFi network in this step because the respective QoS requirements of the WiMAX network and WiFi network are different, such as unifying the QoS requirements of voice communication of the WiMAX network and the QoS requirements of voice communication of the WiFi network into a new QoS requirement), to form a communication class a, a communication class b and a communication class c, where jitter requirements of the communication classes a, b and c are sequentially increased, it can be understood that a, b and c can be communication types of voice, telephone, short message, video, etc., respectively, and this is not limited here;
② making the upper limit Ux of bandwidth reservation and the lower limit of bandwidth reservation according to the jitter requirement of different communication classes
Lx (x ═ a, b, or c) satisfies
(Ua-La)＞(Ub-Lb)＞(Uc-Lc) The first requirement is preset.
Wherein Ux is the upper limit of the bandwidth reservation and Lx is the lower limit of the bandwidth reservation (x ═ a, b or c)
③ ensuring that the average bandwidth BWx (x is a, b or c) of different communication classes meets the requirement of different communication classes on time delay
Figure BDA0001250758320000101
The second requirement is preset.
Wherein x represents communication class a, b or c, nxRepresenting the number of occupied communication classes;
④ wherein the overall bandwidth allocation is satisfied
S＝BW-(Uc+Ub+La)＞0
Where S is the remaining bandwidth and BW is the total bandwidth
⑤ determining whether the mobile terminal is capable of joining
Figure BDA0001250758320000102
The third requirement is preset.
Where Bx is the bandwidth that needs to be occupied by the communication class x of the MN (mobile terminal) requesting to join, Ox is the bandwidth already occupied by the communication class x (x ═ a, b, or c) in the AP, and n is the bandwidth already occupied by the communication class x (x ═ a, b, or c) in the APxRepresenting the number of occupied communication classes, and if not, performing step ⑥
⑥ determining whether the mobile terminal can join
BW-(Oa+Ob+Oc)≥S
If so, the AP or BS is joined, and the AP or BS then executes a load balancing scheduler.
It should be noted that the load scheduler is only needed to be executed in case ⑥;
in yet another case, when the RS is less than the RSSI, the load scheduler also needs to be executed;
for example, if 100 bandwidths are allocated to communication class a, the upper limit setting of communication class a is 8, the lower limit setting is 5, and if only 1 terminal needs communication class a, the wifi base station may allocate bandwidth 8 to the terminal; if there are 20 mobile terminals requiring communication class a, each mobile terminal is only allocated bandwidth 5, if there is a mobile terminal requesting to occupy communication class a later, the allocated bandwidth must be less than 5, but if there is excess bandwidth in the other communication classes b or c, the wifi base station can still allocate bandwidth 5 to each mobile terminal communication class a. Thus, under the premise of ensuring QoS/QoE, the maximum number of mobile terminals can be ensured, and then the load balancing program is executed.
The load balancing scheduling program comprises the following steps:
① APx or BSx (AP or BS allowing MN to join) selects MNx (MN with minimum RS (signal strength) in APx or MN in BSx), and sends switching request message to MNx;
② MN sends APList (list of available APs that meet RSSI threshold requirements) to APx or BSx;
③ APx or BSx sends a remaining load request message to the APs in APList;
④ AP in APList replies the remaining load condition to APx or BSx;
⑤ APx or BSx establishes HCList (switchable AP list) according to reply residual load condition
Figure BDA0001250758320000111
⑥ APx sends HCList to MN;
⑦ MN selects the AP with the strongest RS (signal strength) to request to join.
Referring to fig. 3, an embodiment of a mobile terminal according to the present invention includes:
a setting unit 301, configured to obtain a setting instruction, set a received signal strength indication threshold according to the setting instruction, and obtain a preset received signal strength indication threshold;
a scanning unit 302, configured to send a first access request to a WiFi access point after scanning signal strength of each WiFi access point;
a first determining unit 303, configured to determine whether the signal strength of the WiFi access point is greater than a preset received signal strength indication threshold, if yes, trigger a first accessing unit 304, and if not, trigger a second accessing unit 305;
a first access unit 304, configured to select, according to the signal strength, a WiFi access point to send an access request, access the WiFi access point until an access permission sent by the WiFi access point according to the admission control mechanism is obtained, and then trigger a first sending unit 306;
a second access unit 305, configured to send an access request to the WiMAX base station, access the WiMAX base station after obtaining the addition permission of the WiMAX base station according to the admission control mechanism, and trigger a second sending unit 307 after a preset time period elapses;
a first sending unit 306, configured to obtain a switchable WiFi access point list sent by an accessed WiFi access point after the accessed WiFi access point determines that a load scheduling program needs to be executed and executes the load scheduling program on the accessed WiFi access point, and send an access request to a WiFi access point with the largest signal strength in the switchable WiFi access point list;
a second sending unit 307, configured to obtain the switchable WiFi access point list sent by the WiMAX base station after the WiMAX base station executes the load scheduling procedure, and send an access request to the WiFi access point with the largest signal strength in the switchable WiFi access point list.
Preferably, a mobile terminal provided in the embodiment of the present invention further includes:
the second determining unit 308 is configured to, after determining, according to the moving situation, that the signal strength of the accessed WiFi access point is smaller than the preset received signal strength indication threshold, and after the accessed WiFi access point executes the load scheduling program, obtain a switchable WiFi access point list sent by the accessed WiFi access point, and send an access request to the WiFi access point with the largest signal strength in the switchable WiFi access point list.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (7)

1. A user service-aware heterogeneous network handover method is characterized by comprising the following steps:
s1: after scanning the signal intensity of each WiFi access point, the mobile terminal sends a first access request to the WiFi access point;
s2: the mobile terminal judges whether the signal strength of the WiFi access point is larger than a preset received signal strength indication threshold value or not, if so, S3 is executed, and if not, S4 is executed;
s3: the mobile terminal selects WiFi access points to send access requests according to the signal intensity sequence, accesses the WiFi access points after obtaining the adding permission sent by the WiFi access points according to the admission control mechanism, and then executes S5;
the admission control mechanism specifically includes:
unifying the QoS requirement of WiMAX network communication and the QoS requirement of Wifi network communication into a new QoS requirement of communication, and confirming the jitter requirement of communication and the time delay requirement of communication according to the new QoS requirement of communication;
acquiring an upper bandwidth reservation limit and a lower bandwidth reservation limit, enabling the upper bandwidth reservation limit and the lower bandwidth reservation limit to meet a preset first requirement according to the jitter requirement of the communication class, and enabling the average bandwidth of the communication class to meet a preset second requirement according to the time delay requirement of the communication class;
acquiring a total bandwidth, and calculating a bandwidth reservation upper limit, a bandwidth reservation lower limit and the total bandwidth to obtain a residual bandwidth;
acquiring the required occupied bandwidth of the communication class of the mobile terminal and the occupied bandwidth of the communication class, judging whether the required occupied bandwidth of the communication class of the mobile terminal, the occupied bandwidth of the communication class and the bandwidth reservation lower limit of the communication class meet preset third requirements, if so, allowing the mobile terminal to access, and if not, allowing the mobile terminal to access and execute a load scheduling program after judging that the difference between the total bandwidth and the occupied bandwidth of the communication class is greater than the residual bandwidth;
s4: the mobile terminal sends an access request to the WiMAX base station, accesses the WiMAX base station after obtaining the access permission of the WiMAX base station according to the access control mechanism, and executes S6 after a preset time period;
s5: after the mobile terminal judges that a load scheduling program needs to be executed at the accessed WiFi access point and executes the load scheduling program at the accessed WiFi access point, acquiring a switchable WiFi access point list sent by the accessed WiFi access point, and sending an access request to the WiFi access point with the maximum signal intensity in the switchable WiFi access point list;
s6: after the WiMAX base station executes the load scheduling program, the mobile terminal acquires the switchable WiFi access point list sent by the WiMAX base station and sends an access request to the WiFi access point with the maximum signal intensity in the switchable WiFi access point list.
2. The user service aware heterogeneous network handover method according to claim 1, wherein step S1 is preceded by:
s0: the mobile terminal obtains the setting instruction, sets the received signal strength indication threshold value according to the setting instruction, and obtains the preset received signal strength indication threshold value.
3. The user traffic aware heterogeneous network handover method according to claim 2, further comprising:
after the mobile terminal judges that the signal strength of the accessed WiFi access point is smaller than a preset received signal strength indication threshold value according to the moving condition, and after the accessed WiFi access point executes a load scheduling program, a switchable WiFi access point list sent by the accessed WiFi access point is obtained, and an access request is sent to the WiFi access point with the maximum signal strength in the switchable WiFi access point list.
4. The user service aware heterogeneous network handover method according to claim 1, wherein the load scheduler specifically comprises:
sending a switching request to an accessed mobile terminal;
acquiring an available WiFi access point list sent by an accessed mobile terminal, and sending residual load request information to each WiFi access point corresponding to the available WiFi access point list;
after the residual load condition information sent by each WiFi access point corresponding to the available WiFi access point list is obtained, a switchable WiFi access point list is established according to the residual load condition information, and the switchable WiFi access point list is sent to the mobile terminal.
5. A mobile terminal, comprising:
the scanning unit is used for sending a first access request to the WiFi access point after the signal intensity of each WiFi access point is scanned;
the first judgment unit is used for judging whether the signal strength of the WiFi access point is larger than a preset received signal strength indication threshold value or not, if so, the first access unit is triggered, and if not, the second access unit is triggered;
the first access unit is used for selecting WiFi access points to send access requests according to the signal intensity sequence, accessing the WiFi access points until the access permission sent by the WiFi access points according to the admission control mechanism is obtained, and triggering the first sending unit;
the admission control mechanism specifically includes:
unifying the QoS requirement of WiMAX network communication and the QoS requirement of Wifi network communication into a new QoS requirement of communication, and confirming the jitter requirement of communication and the time delay requirement of communication according to the new QoS requirement of communication;
acquiring an upper bandwidth reservation limit and a lower bandwidth reservation limit, enabling the upper bandwidth reservation limit and the lower bandwidth reservation limit to meet a preset first requirement according to the jitter requirement of the communication class, and enabling the average bandwidth of the communication class to meet a preset second requirement according to the time delay requirement of the communication class;
acquiring a total bandwidth, and calculating a bandwidth reservation upper limit, a bandwidth reservation lower limit and the total bandwidth to obtain a residual bandwidth;
acquiring the required occupied bandwidth of the communication class of the mobile terminal and the occupied bandwidth of the communication class, judging whether the required occupied bandwidth of the communication class of the mobile terminal, the occupied bandwidth of the communication class and the bandwidth reservation lower limit of the communication class meet preset third requirements, if so, allowing the mobile terminal to access, and if not, allowing the mobile terminal to access and execute a load scheduling program after judging that the difference between the total bandwidth and the occupied bandwidth of the communication class is greater than the residual bandwidth;
the second access unit is used for sending an access request to the WiMAX base station, accessing the WiMAX base station after obtaining the access permission of the WiMAX base station according to the access control mechanism, and triggering the second sending unit after a preset time period;
the first sending unit is used for acquiring a switchable WiFi access point list sent by the accessed WiFi access point after the accessed WiFi access point judges that a load scheduling program needs to be executed and the accessed WiFi access point executes the load scheduling program, and sending an access request to the WiFi access point with the maximum signal intensity in the switchable WiFi access point list;
and the second sending unit is used for acquiring the switchable WiFi access point list sent by the WiMAX base station after the WiMAX base station executes the load scheduling program, and sending an access request to the WiFi access point with the maximum signal strength in the switchable WiFi access point list.
6. The mobile terminal of claim 5, further comprising:
and the setting unit is used for acquiring the setting instruction, setting the received signal strength indication threshold according to the setting instruction and acquiring the preset received signal strength indication threshold.
7. The mobile terminal of claim 6, further comprising:
and the second judging unit is used for acquiring a switchable WiFi access point list sent by the accessed WiFi access point after judging that the signal strength of the accessed WiFi access point is smaller than a preset received signal strength indication threshold value according to the moving condition and executing a load scheduling program on the accessed WiFi access point, and sending an access request to the WiFi access point with the maximum signal strength in the switchable WiFi access point list.
CN201710169523.2A 2017-03-21 2017-03-21 User service-aware heterogeneous network switching method and mobile terminal Active CN106961690B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710169523.2A CN106961690B (en) 2017-03-21 2017-03-21 User service-aware heterogeneous network switching method and mobile terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710169523.2A CN106961690B (en) 2017-03-21 2017-03-21 User service-aware heterogeneous network switching method and mobile terminal

Publications (2)

Publication Number Publication Date
CN106961690A CN106961690A (en) 2017-07-18
CN106961690B true CN106961690B (en) 2020-04-28

Family

ID=59471018

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710169523.2A Active CN106961690B (en) 2017-03-21 2017-03-21 User service-aware heterogeneous network switching method and mobile terminal

Country Status (1)

Country Link
CN (1) CN106961690B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111246398B (en) * 2020-01-20 2022-02-22 广东博智林机器人有限公司 Low-energy-consumption communication method, device and system and storage medium
WO2022061566A1 (en) * 2020-09-23 2022-03-31 Qualcomm Incorporated Resource selection under congested conditions

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1996909A (en) * 2005-12-26 2007-07-11 中兴通讯股份有限公司 A load balance method based on the static position information in the wireless LAN
CN101347005A (en) * 2005-12-21 2009-01-14 思科技术公司 System and method for integrated WIFI/WIMAX neighbor AP discovery and AP advertisement
CN105430689A (en) * 2016-01-06 2016-03-23 重庆邮电大学 Service and effectiveness function based load balancing method in heterogeneous network

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8121607B2 (en) * 2006-11-27 2012-02-21 Zte (Usa) Inc. Mobile station initiated load balancing in wireless communication networks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101347005A (en) * 2005-12-21 2009-01-14 思科技术公司 System and method for integrated WIFI/WIMAX neighbor AP discovery and AP advertisement
CN1996909A (en) * 2005-12-26 2007-07-11 中兴通讯股份有限公司 A load balance method based on the static position information in the wireless LAN
CN105430689A (en) * 2016-01-06 2016-03-23 重庆邮电大学 Service and effectiveness function based load balancing method in heterogeneous network

Also Published As

Publication number Publication date
CN106961690A (en) 2017-07-18

Similar Documents

Publication Publication Date Title
US9843963B2 (en) Load balance method and relevant apparatuses
US20190373520A1 (en) Method and apparatus for complementary and equivalent network slice deployment in a network environment
RU2561859C2 (en) Method and system for reporting additional measurement results
US8498653B2 (en) Load sharing method, device, and system
US8612567B2 (en) Apparatus for providing policy and terminal device for changing network in heterogeneous networks
CN111052787A (en) Function selection based on utilization level in 5G environment
EP3018934A1 (en) Network offloading method and apparatus
AU2010262396B2 (en) Method and device for switching between base stations
US11659474B2 (en) Intelligent selection between singular and dual connectivity
KR20160002150A (en) Method and apparatus for controlling service continuity in mobile communication systems
WO2020029981A1 (en) Cell switching method, device and system
CN109462863B (en) Method and equipment for voice called
CN104703241A (en) Cell handover method and device
CN104380835A (en) Method for operating a network element of a wireless communication network and network element
CN106961690B (en) User service-aware heterogeneous network switching method and mobile terminal
CN102131238B (en) Load balancing method from time division-synchronization code division multiple access (TD-SCDMA) system to global system for mobile communication (GSM) system
EP3910984A1 (en) Method for processing broadcast beam and communication device
CN113873604B (en) WiFi6 wireless network switching method and device based on edge calculation
CN104955128A (en) Load information transmission method, load information transmission system and network element
CN115278796A (en) Cell switching method, cell switching device, terminal equipment and storage medium
KR20140045887A (en) Mehtod and appartus for cell load balancing in a wireless communication system
KR102053766B1 (en) Multi―cell selection method and distrubuted data transmission method to provide enhanced mobile data transmission in wireless overlay network
CN109152083A (en) Accidental access method, device and user equipment
CN104703220B (en) A kind of service request method and device
US20140349650A1 (en) Temporarily Serving a User Equipment by a Second Cell

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant