WO2010000092A1

WO2010000092A1 - The terminal handover control method and apparatus in wireless communication network

Info

Publication number: WO2010000092A1
Application number: PCT/CN2008/001254
Authority: WO
Inventors: 张文涛; 邹加林; 张静
Original assignee: 朗讯科技公司
Priority date: 2008-07-01
Filing date: 2008-07-01
Publication date: 2010-01-07
Also published as: CN102057737A

Abstract

A mobile terminal handover control method and apparatus are provided, wherein the target access node (AN) determines how to process the handover request based on the priority information included in the handover request and related to the service type and/or user character information of MT, after received the handover request message transmitted by the source node. For example, in case of the air interface transmit channel resources are restricted, AN can reject some handover request with low priority, or postpone such handover request and exert itself to carry out the handover with high priority user.

Description

Terminal switching control method and device in wireless communication network

Technical field

The present invention relates to a wireless communication network, and more particularly to a control method and apparatus for switching a mobile terminal between different access nodes in a wireless communication network. Background technique

Wireless technology is undoubtedly one of the fastest growing areas in today's communication networks. Among them, in the evolution to the fourth generation of wireless communication systems, experts have developed three representative systems, namely Ultra Mobile Broadband (UMB). Long Term Evolution (LTE) and Worldwide Interoperability for Microwave Access (WiMAX) systems. In the near future, one of them will become the mainstream development direction of wireless communication.

In such a rapid development of wireless communication networks, because packet domains have lower operating costs and higher resource utilization than circuit domains, more and more delay-sensitive services such as IP telephony (VoIP) are available. Video telephony (VT) has been transferred from the circuit domain to the packet domain. To make wireless packet domain technology truly replace circuit domain technology, there are still some problems related to signal quality (QoS) that need to be solved, and technical experts in this field are working on it. In addition to the above-mentioned high-latency-sensitive services, there are also some services that are not sensitive to delay, such as file transfer protocol (FTP) and web browsing. The types of services mentioned in this document include, but are not limited to, VoIP, VT, FTP, and web browsing.

In the above-mentioned unresolved QoS problem, how to ensure the continuity of the service and the stability of the signal quality when the mobile terminal is switched from one access node (AN) to another access node has been regarded as the most important today by 3GPP2. One of the research topics.

The handover of mobile terminals between access nodes often occurs in the following situations, see Figures la and lb, which show a simple wireless network, including access nodes 10, 11 'and mobile terminals 20, Incoming nodes 10, and 11, respectively, govern cells A, and B, respectively.

Here, it is assumed that the mobile terminal 20 is performing a VoIP service. In such as UMB, In the WiMA and other standards, the mobile terminal 20 periodically detects the signal strength of pilot signals (pilots) from each access node, and based on the detection result, to the access node to which it currently belongs (also referred to herein as mobile). The terminal's service AN) reports the test results. Specifically, as shown in FIG. 1a, the mobile terminal 20 is located at the central location of the cell under the access node 10 (the serving AN), because the pilot signal strength from the access node 10 is much greater than that from other access nodes. Pilot signal strength. Thus, the mobile terminal 20 typically only needs to report the signal strength from the access node 10.

Next, the mobile terminal 20 moves to the cell edge as shown in FIG. Since the detected signal strength from the access node 10 and the access node 11 adjacent thereto is equivalent, even if the former is weaker than the latter, the mobile terminal 20 reports the two from the detection result report. The pilot signal strength of the access node. In the UMB system, the signal report also contains an identification information to indicate that it is desired to switch from access via access node 10 to access via access node 1. Hereinafter, such a message for requesting handover between access points is referred to as a handover request message, and a mobile terminal that is ready to perform handover is referred to as a source node before handover, and will be an access node as a handover target. Called the target node.

The source node, e.g., access node 10, forwards the handover request message to the destination node (access node 11,). Since the access node 11 is likely to receive more than one handover request message, the handover request messages are respectively from multiple access nodes adjacent thereto, and thus, based on the handover mechanism commonly used in the field, these handover request messages are The access node 11 will respond in the order of first in first out. With this mechanism, the handover request message sent by the mobile terminal that is performing the high latency sensitivity service and the handover request message sent by the mobile terminal that is performing the low latency sensitivity service are treated equally, if the access node 11 The remaining transmission resources on the air interface are relatively scarce, and before the handover request of the mobile terminal 20, there are already a plurality of other mobile terminals that are performing FTP download or web browsing, and send a handover request message and wait in the queue. Processing, the access node 11 preferentially allocates resources for these other mobile terminals to complete the handover, and when it is the turn of the mobile terminal 20, the remaining resources of the access node 11 are insufficient, and thus, the handover of the mobile terminal 20 The request may be rejected, and this may directly result in the interruption of its voice call or video conference.

In the existing UMB system, a reverse link is proposed, also That is, the switching control mechanism used on the uplink from the user side to the network side, which is often referred to in the general communication system. The handover request message sent by the mobile terminal (AT, called the access terminal) in the UMB system includes the following information: maximum waiting time, amount of data that the mobile terminal has already cached. Therefore, the target node can perform preliminary priority adjustment according to information such as the maximum waiting time, the amount of buffered data, and the like included in each handover request message. For example, the mobile terminal that has the shortest waiting time is preferentially allocated resources to complete the handover, or the mobile terminal that has already buffered more data is preferentially allocated to complete the handover, and the like.

This existing switching mechanism has the following problems:

1. Although the mobile terminal provides the maximum waiting time and the amount of data that the mobile terminal has buffered for the target node, the above information only indicates the information of the radio bearer level. It is considered that mobile terminals that need to be handed over in the system may be carrying out service transmission, and different mobile terminals may be transmitting different services. More specifically, a mobile terminal to be handed over may be transmitting a plurality of different types of data services, and the priority of various data services is large. At this point, the maximum wait time, the amount of data buffered, and the information that is completely unrelated to the type of service are not sufficient to help the target node to optimally prioritize each switch request.

2. For mobile terminals that do not perform service transmission, there will be no handover of services. Therefore, the maximum waiting time and cached data are even less meaningful for mobile terminals in this state.

3. Today, when wireless communication is widely used, there is already a difference between users and users (eg, gold users, silver users, and bronze users), and this difference is not reflected in the existing switching mechanism.

Summary of the invention

In order to solve the above problems in the prior art, an object of the present invention is to provide a new method and apparatus. Specifically, after obtaining a handover request message related to a mobile terminal, the target node according to the mobile terminal included therein Priority type related information related to the type of service and/or user characteristic information to determine how to handle the handover request, for example, in the AN In the case of a tight transmission channel resource on the air interface, the AN may reject some low priority handover requests, or defer these low priority handover requests, and use only resources to achieve high priority. User switching.

In order to achieve the above object, according to a first aspect of the present invention, a method for controlling a handover of a mobile terminal from another access node to a local access node in an access node of a wireless communication network is provided, wherein the method includes the following steps Receiving a handover request message related to one or more mobile terminals, the handover request message being used to request that the one or more mobile terminals be handed over from the corresponding other access node to the local access node; b And obtaining, according to the handover request message, handover priority related information associated with the service type and/or user feature information of each mobile terminal; c. processing the respective according to the obtained handover priority related information Switch the request.

According to a second aspect of the present invention, a method for controlling a handover of a mobile terminal from a local access node to another access node in an access node of a wireless communication network is provided, comprising the steps of: B. And providing, to the another access node, handover control assistance information corresponding to the mobile terminal, where the handover control assistance information is related to user feature information and/or service type of the mobile terminal.

According to a third aspect of the present invention, a method for assisting handover control of an mobile terminal from one access node to another in a mobile terminal of a wireless communication network is provided, characterized in that it comprises The following steps are: 0. Providing, for the access node, handover control assistance information corresponding to the mobile terminal, where the handover control assistance information is related to user feature information and/or service type of the mobile terminal.

According to a fourth aspect of the present invention, a severance control apparatus for controlling a mobile terminal to be handed over by another access node to a local access node in an access node of a wireless communication network is provided, wherein the method includes the following steps: a first receiving device, configured to receive a handover request message related to one or more mobile terminals, where the handover request message is used to request to send the one or more mobile terminals from the corresponding other access node to the local access node Performing a handover; obtaining, for obtaining, according to the handover request message, handover priority related information associated with the service type and/or user feature information of each mobile terminal; processing means, configured to obtain according to the obtained The priority information is switched to process the respective handover requests. According to a fifth aspect of the present invention, there is provided a cut-out control apparatus for controlling a mobile terminal to switch from a local access node to another access node in an access node of a wireless communication network, including: And a providing apparatus, configured to provide, for the another access node, handover control assistance information corresponding to the mobile terminal, where the handover control assistance information is related to user feature information and/or service type of the mobile terminal.

According to a sixth aspect of the present invention, there is provided an auxiliary device for assisting handover control of a mobile terminal from one access node to another in a mobile terminal of a wireless communication network, characterized in that The method includes: a third providing apparatus, configured to provide the access node with handover control assistance information corresponding to the mobile terminal, where the handover control assistance information is related to user feature information and/or service type of the mobile terminal.

With the technical solution provided by the present invention, the target node can obtain the handover priority information determined by the service type that the mobile terminal requesting handover is determined and/or the handover priority information determined by the user characteristic information of the mobile terminal, and According to the information, scheduling is performed between a plurality of mobile terminals that request handover, and the requirements of the high priority users are preferentially satisfied. Therefore, it is possible to effectively avoid high-latency-sensitive services that are interrupted due to excessive waiting time during handover, and can also take care of the switching requirements of important users. DRAWINGS

Further features and advantages of the present invention will become apparent from the following description of the embodiments of the invention. Wherein, the same or similar reference numerals indicate the same or similar step features or device (module) features.

Figure la shows a schematic diagram of a wireless communication network comprising two neighboring cells; Figure lb shows a schematic diagram of a wireless communication network comprising two neighboring cells; Figure 2 shows a specific implementation in accordance with the present invention Schematic diagram of a wireless communication network;

3 is a flow chart showing a system method for performing handover control triggered by a mobile terminal in an HRPD system in accordance with an embodiment of the present invention;

4 illustrates a flow chart of a system method for performing forward link handoff control triggered by a mobile terminal in a UMB network, in accordance with an embodiment of the present invention; 5 illustrates a hand-in control device for controlling a mobile terminal to be handed over by another access node to a local access node in an access node of a wireless communication network, in accordance with an embodiment of the present invention;

6 illustrates a cut-out control apparatus for controlling a handover of a mobile terminal from a local access node to another access node in an access node of a wireless communication network, in accordance with an embodiment of the present invention;

Figure 7 illustrates ancillary means for assisting handover control of an mobile terminal from one access node to another in a mobile terminal of a wireless communication network in accordance with an embodiment of the present invention. detailed description

In this document, the present invention will be mainly described by taking a UMB network as an example, but those skilled in the art can understand that the present invention is applicable to any wireless communication network that generates handover between access nodes, and is particularly suitable for a wireless packet network, wherein This includes but is not limited to 2G, 3G, 3.5G and 4G networks. According to the introduction of the implementation scenario of the UMB network in this specification, those skilled in the art can extend the present invention to other wireless communication networks in which mobile terminals switch between access nodes without any creative labor.

In the following, the invention will be described in detail with reference to a specific flow chart in conjunction with a network topology diagram, first referring to Fig. 2, which shows a schematic diagram of a wireless communication network in accordance with an embodiment of the present invention. The access nodes 10, 11, 12, 13 and the mobile terminals 21, 22, 23 respectively administer the cells A, B, C, D are included. Wherein the mobile terminal 21 is accessing via the access node 11, ie its serving AN is the access node 11; and the mobile terminal 22 is accessing via the access node 12, ie its serving AN is the access node 12; The terminal 23 is being accessed via the access node 13, ie its serving AN is the access node 13.

The following description with reference to Figure 3 in conjunction with Figure 2 is based on the following assumptions: 1. The mobile terminal 21 is using VoIP traffic and gradually moves from the central location of the cell B to the boundary of the cells A, B; 2. The mobile terminal 22 is using FTP to download the service And gradually moving from the central location of the cell C to the boundary of the cells A, C; 3. The mobile terminal 20 does not currently use any service, that is, the idle state after the power-on (Idle) state, and moves to the boundary of the cells A, D. 3 shows a flow chart of a system method for controlling handover triggered by a mobile terminal in an HRPD (a.ka. lxEV-DO) system in accordance with an embodiment of the present invention. Those skilled in the art understand that the step numbers are only convenient for reference in the description, and there is no strict order relationship between several steps and other steps, and such a non-strict order relationship will be hereinafter embodied.

In step S1 of repeated execution, the mobile terminal 21 continually detects the pilot signal strength from a plurality of nearby ANs, and periodically determines in step S2 whether the condition for triggering the handover is satisfied. Initially, because of its proximity to the service AN, the strength of the pilot signals from other ANs is negligible from the perspective of switching from the perspective of the service AN. Therefore, the mobile terminal 21 reports only the detected pilot signal strength from the access node 11 to the access node 11 based on the prior art.

Since the mobile terminal 21 is using the VoIP service and moving to the border area of the cells A, B. Thus, after detecting the intensity of the pilot signal once, the mobile terminal 21 determines that the condition for triggering the handover has been satisfied. Those skilled in the art understand that the conditions for the mobile terminal 21 to trigger the handover are various and can be well supported by the mature mechanism in the prior art. For example, it may be triggered when the signal strength from the access node 10 exceeds a predetermined strength threshold, or when the ratio of the signal strength from the access node 10 to the signal strength from the access node 11 exceeds a predetermined ratio threshold. Time to trigger.

Thus, in step S3, the mobile terminal 21 generates a handover request message, such as a RUM message in the UMB network. In order to satisfy the condition for realizing handover, it includes identification information of the mobile terminal 21 as a handover object, for example, a logical number or the like. This information can be regarded as user characteristic information of the mobile terminal 21. Moreover, in accordance with an embodiment of the present invention, the message further includes a handover priority indication information for indicating a type of service and/or user profile information of the mobile terminal.

It is necessary here to explain the meaning and specific manifestation of the switching priority indication information. First, the handover priority indication information must have a meaning that the access node can know. Specifically, it may be expressed in the form of a binary string or an English string, such as "High" and "Low", for informing the access node, due to the service type of the mobile terminal and/or Or the user characteristic information needs to be switched as indicated by the indication information. According to the present example, if the impact of the user characteristic information on the generation of the handover priority indication information is not considered, if the user terminal uses a service with high delay sensitivity, such as

VoIP or VT, the switching priority indication information in the normally generated handover request message is "High" or a string of other representations equivalent to it. When the mobile terminal uses a low latency sensitive service such as FTP download, web browsing, etc., the corresponding switching priority indication information is "Low" or a string of other representations equivalent thereto. When a mobile terminal is ready to switch but does not have a service in use, that is, in an Idle state, optionally, the handover request message may not include handover priority indication information, or include a "Low" because the mobile terminal There is no ongoing business and its sensitivity to latency should be minimal. Of course, if the mobile terminal in the idle state does not need to allocate dedicated radio transmission resources to the access node, and the access node's ability to process the handover request is not a bottleneck in the handover mechanism, that is, the handover request is reached at the same time. How many messages exist, as long as there are enough free radio resources on the AN's air interface, and the mobile terminals requesting handover can implement a higher handover priority for these mobile terminals when the handover can be implemented within an acceptable time.

When considering the role of the user feature information, the generation of the handover priority indication information will preferably include the following two parameters: user feature information, service type. Those skilled in the art understand that there are various ways to determine the handover priority indication information based on the above two parameters, including but not limited to:

Switch priority indication information generation method 1 :

The user feature information is unconditionally prioritized over the service type, that is, when the mobile terminal is a gold medal user defined by the operator/network service provider, whether the service type used by the mobile terminal is VoIP or web browsing, "High" is generated. " to indicate the highest switching priority.

Switching priority indication information generation method 2:

The service type takes precedence over the user profile information, that is, when the service used by the mobile terminal is a high latency sensitive service, even if the user belongs to the least paid and least valued Bronze user, "High" is generated to indicate The highest switching priority.

Those skilled in the art understand that, in the above manner, the target node may face multiple Switching the mobile terminal with the priority of "High" requesting handover, in this case, it may be processed in the chronological order in which the request message is received, or the switching priority indication information may be further refined based on the idea of the present invention, or the handover priority may be prioritized. The number of levels of handover priority indicated by the level indication information is increased to try to make priority differences for different handover requests. The details are as follows: When using any of the foregoing generation modes, if two handover requests from different mobile terminals have the same handover priority indication information due to the service type equivalent or the user status corresponding to the user feature information, the target AN may wish to subdivide in the following ways. For example, when the switching request of two gold medal users is simultaneously determined to be "High", the priority level is further differentiated according to the type of service, that is, the highest priority is achieved for the gold medal user who uses the VoIP or VT service, and then Switching is done for Gold users who use other services. Or, when two users using VoIP or VT services have priority conflicts, their respective switching needs are met in the order of gold, silver, and bronze users. For the handover request of the terminal that also uses the high latency sensitivity service for the gold card user, the time of receiving the handover request message may be used as a reference for determining the sequence in which the handover needs are met.

The generated handover request message will be sent to the access node 11 in step S3.

Thereafter, the access node 11 forwards the handover request message to the target AN, the access node 10. Of course, the forwarding mentioned here should be understood as the forwarding of the "handover request". The specific implementation form further includes: the access node 11 parses the incoming handover request message, ie, the RUM, and obtains the handover priority from the access priority. The indication information is added to the generated A 16-Session Transfer Request message and sent to the target 在 in step S4.

In step S5, the access node 10 obtains handover priority related information related to the service type and/or user characteristic information of the mobile terminal 21 based on the received handover request message, for example, A-Session Transfer Request. In this example, first, the access node 10 extracts the handover priority indication information from the A16-Session Transfer Request, and then preferably, the access node 10 determines whether the handover priority indicated by the handover priority indication information is legal. The above generation method 2 is adopted when the mobile terminal does not generate the handover priority indication information, and therefore, the handover request originating from the mobile terminal 21 should contain "High" is the indication. While acknowledging the generation mode, the access node 10 can know the type of service that the mobile terminal ²¹ is currently performing, for example, initiating a query to the source AN, and then determining that the extracted handover priority indication information is legal. This is thus taken as the switching priority related information finally obtained in step S5, which information is related to the service type and user characteristic information in this example, and then proceeds to step S6.

In step S6, the access node 10 determines whether to allow the handover to be performed based on the obtained handover priority related information related to the service type and user characteristic information of the mobile terminal 21. Specifically and preferably, the access node 10 determines different handover request processing mechanisms based on its current load conditions.

Specifically, the access node 10 periodically determines and maintains its own load condition, or determines each time a handover request message is received. The load of an access node mentioned herein generally refers to the occupancy or total amount of transmission resources on its air interface. Of course, the load should be understood as any possible restriction on the access node 10 to satisfy the handover of the mobile terminal. The load of the requested resource, that is, if the processor speed of the access node 10 is very slow, it takes a long time for the multiple handover request messages to be processed to be parsed, regardless of whether the request is allowed or not. If it is rejected, then even if the resources on the air interface are sufficient, the traffic of the mobile terminal with high handover priority will be interrupted due to the delay caused by waiting for the handover. Of course, the situation that the access node has poor processing capability is extremely extreme. Therefore, the load specific indication of the transmission resource occupancy on the air interface is taken as an example.

When the load is low, it indicates that the access node 10 has enough transmission resources on the air interface on the user side for allocation. Therefore, the access node 10 can select the request for each mobile terminal according to the traditional handover processing mechanism. The handover responds. In other words, the radio resource can be allocated to the access node in the chronological order of the access request message. Specifically, a handover response message is generated, which includes related information indicating the radio resource allocated to the mobile terminal ²¹ , and then the access node 11 obtains related information of the radio resource from the handover response message, and informs the mobile terminal 21 , to achieve switching.

On the other hand, if the access node 10 has already undertaken a large number of mobile terminal service transmission operations, the vacant transmission resources on the air interface are very limited, for example, only one The VoIP service or the cut-in of a web browsing service, based on the assumption of the mobile terminal 22 above, that is, the mobile terminal 22 is using FTP to download the service and gradually moving from the central location of the cell C to the boundary of the cells A and C, and thus Based on the above-described handover priority indication information generation mode 2, the handover request message corresponding to the mobile terminal 22 correspondingly includes the indication information "Low". Therefore, even if the handover request message corresponding to the mobile terminal 22 forwarded by the access node 12 arrives at the access node 10 prior to the handover request message corresponding to the mobile terminal 21, the handover priority of the mobile terminal 21 is higher. The access node 10 preferentially allocates its remaining wireless transmission resources to the mobile terminal 21 to complete the handover. For the request of the mobile terminal 22, the access node 10 may choose to directly send a corresponding response message indicating that the handover request of the mobile terminal 22 is rejected, as shown in step S7 in the figure. Optionally, the access node 10 may choose to postpone the request, that is, during the validity period of the request, if some other mobile terminal terminates the service or switches to another access node, the vacated radio resource It can be assigned to the mobile terminal 22 to complete this handover.

After the request and control process of the above handover is completely explained, the process of determining whether the handover priority indication information in step S5 is legal is additionally introduced. It is well known that there is absolutely no malicious user in the communication network in an ideal state. Therefore, it is not excluded that the user tampers with the handover priority indication information in the generated handover request message by illegal means, that is, one is using web browsing. The Bronze user of the service, whose mobile terminal generates a handover request message containing "High". In this case, the access node is further required to perform the screening in step S5. Specifically, the access node 10 as the target AN may initiate a query to the source node, thereby knowing the type of service that the user is actually using, and according to the user of the user. The feature information and the service type determine the switching priority that it should have, and compare with the content of the handover priority indication information. If the latter is found to be higher than the former, the handover priority indicated by the handover priority indication information is determined. Level is not legal. After obtaining the negative determination result, the access node 10 has the following two options: 1. The handover priority re-determined by the access node 10 according to the collected information is taken as the obtained handover priority of the mobile terminal, and further Perform the subsequent step S6; 2. reject the handover request of the mobile terminal. According to another embodiment of the present invention, the handover request message generated by the mobile terminal 21 includes its user feature information, and service type related information of the service that the mobile terminal 21 is using. Those skilled in the art understand that the "service type related information" includes any information that enables the target AN to know the service type of the mobile terminal. The following is still exemplified with reference to FIG. 3. Here, for the sake of brevity, the The repetitive description above focuses on the differences from the above using the "switching priority indication information".

In step S3, the mobile terminal 21 generates a handover request message containing its user characteristic information, such as a logical number, and service type related information. The form of the service type related information is, for example but not limited to, "000", indicating VoIP; "001", indicating VT; "010", indicating FTP; "011", indicating web browsing; "100", indicating idle.

Then, when the information arrives at the access node 10 after step S4, in step S5, the access node 10 determines the handover priority of the mobile terminal based on the user characteristic information and the service type related information. The specific method uses, for example, the idea of any one of the foregoing switching priority indication information generating manners. When the idea of the mode 2 is utilized, when a priority difference cannot be formed between two or more switching requests according to the service type, The subdivision can be further based on the user level (gold medal, silver medal, bronze medal user) corresponding to the user characteristic information.

The process after step S6 is consistent with the description above, and will not be described again. According to still another embodiment of the present invention, the handover request message generated by the mobile terminal 21, such as RUM, includes only user feature information of the corresponding user. Therefore, after forwarding by the source AN, the target AN, that is, the access node 11 only knows which mobile terminal and the corresponding user are requesting handover. At this time, step S5 has the following alternative implementations:

Step 1: Implementation of S5:

The access node 10 determines the handover priority related information of the handover request only according to the user characteristic information. Specifically, the access node 10 determines that the mobile terminal belongs to a gold medal, The silver medal is also a bronze medal user and is given a high to low priority accordingly. Generally, in order to avoid confusion, each mobile terminal follows the same rule, and thus, the handover request message from other mobile terminals also contains only user characteristic information. At this time, the handover request of the gold medal user unconditionally takes precedence over the handover request of the silver medal user, after It also unconditionally takes precedence over the Bronze user's switching request. The order of priority of the refinement is determined by the order in which the handover request messages are received between the handover requests of users of the same level.

The implementation method of step S 5 is as follows:

Since the source AN is aware of the service type of the service currently used by the mobile terminal requesting the handover, after receiving the handover request message delivered in step S4, the service is initiated to the corresponding source AN according to the user feature information therein. The query of the type related information, and the subsequent priority determination based on the query result.

The foregoing implementation manner 2 has the following modification, that is, after receiving the handover request message sent in step S3, the access node 11 checks whether the service type related information is included therein, and after learning that there is no service type related information, The ingress node 11 actively queries the service type of the service currently used by the mobile terminal, and writes the corresponding service type related information into the message that needs to be sent to the access node 10 in step S4, thereby facilitating the hand-in control. The handover process in which the active AN participates in the handover process above is especially applicable to 2G and 3G communication networks. For 3.5G and 4G communication networks, the handover process is independent of the source AN, and the flow chart is briefly described as follows.

4 is a flow diagram of a system method for performing forward link handover control triggered by a mobile terminal in a UMB network, in accordance with an embodiment of the present invention. It is understood by those skilled in the art that in a UMB network, since there are definitions of a forward link and a reverse link, and the forward link and the reverse link of the mobile terminal can be served by different access nodes, therefore, Only one of the links will be described hereinafter and does not affect the disclosure of the present invention.

Since the illustrated network is a UMB network, the mobile terminal 21 can also be referred to as an AT according to custom, and the source AN is a forward link enhanced serving base station (FLSE, Forward Link). Serving eBS), the target AN is an ideal forward link enhanced service base station (DFLSE). In the figure, the mobile terminal 21 is in VoIP communication with a network entity 25 not shown in the figure. The network entity may also be referred to as a DAP, ie, a Data Attachment Point, and the forward chain of the mobile terminal 21 In terms of roads, the handover process will mainly discuss the update of the transmission path of IP voice data from the DAP. Steps S41 and S42 are similar to S1 and S2 in FIG. 3, respectively, and are not described again.

In step S43, the mobile terminal 21 generates a handover request message, which may only contain corresponding user feature information, and may further include service type related information and/or handover priority indication information. The various information components in the message have been discussed separately above and will not be described again. It is worth mentioning that the handover request message in this example is directly sent by the mobile terminal 21 to the target AN, that is, the access node 10, via the physical layer and the MAC layer channel [R-CDCCH, rcqich]. The R-CDCCH is a reverse CDMA data control channel, that is, a Reverse CDMA Data Control Channel, and the rcqich is a reverse channel quality indication channel, that is, a Reverse Channel Quality Indication Channel.

Subsequent steps S44 and S45 are the same as steps S5 and S6 in Fig. 3, respectively, and will not be described again.

When the judgment result of allowing the AT to switch to DFLSE is obtained in step S45, in step S46, the DFLSE uses the forward link allocation block (FLAB) to allocate the switched radio transmission resources to the AT. And in step S47, it is notified that the DAP handover has occurred, and the subsequent data is sent to the access node. Those skilled in the art understand that there is no strict order relationship between steps S46 and S47.

Thereafter, the DAP and the AT respectively transmit and receive the IP voice data on the forward link according to the above indication of the DFLSE, and the handover is smoothly implemented. In the above, the handover procedure triggered by the mobile terminal is mainly described. In practical applications, the handover is triggered by the source AN. This may be due to the consideration of balancing the load between the access nodes, and preferably requires interworking load information between the various access nodes. For example, referring to FIG. 2, when the mobile terminal 21 is in a certain position between the access nodes 10, 11, its serving AN, that is, the access node 11 appears in the user side air. The wireless transmission resource of the interface is overloaded. Therefore, the access node 11 learns that the quality of the transmission channel between the mobile terminal 21 and the access node 10 is sufficient according to the quality of the pilot signal reported by the mobile terminal 21, without the terminal triggering the handover. Supporting the transmission of IP voice data, and the idle wireless transmission resources of the access node 10 are more, and thus, the access node 11 actively triggers the mobile terminal 21 to access the forward link via the access node 11 to the access node 10 Accessing the handover of the forward link. Specifically, and preferably, in the handover request message sent by the access node 11 to the access node 10, the service type related information of the service that the mobile terminal 21 is currently performing, such as "000", indicates VoIP. After receiving the request from the access node 11, the access node 10 can perform subsequent operations based on the manner described above, see the description of steps S5, S6 in FIG. 3 and S44 and S45 in FIG. . For example, the amount of buffered data in the reverse link of the UMB system, maximum latency, is used in conjunction with the present invention. The present invention has been described above from a method perspective, and is further explained below with reference to a specific device block diagram in conjunction with FIG. 2, and still follows the following assumptions: 1. The mobile terminal 21 is using VoIP traffic and is from the center of the cell B. The location gradually moves to the boundary of the cells A, B; 2. The mobile terminal 22 is using FTP to download the service and gradually moves from the central location of the cell C to the boundary of the cells A, C; 3. The mobile terminal 20 does not currently use any service, That is, it is in the idle state after power on, and moves to the boundary of cells A and D.

Figure 5 illustrates a hand-in control device for controlling a mobile terminal to be handed over by another access node to a local access node in an access node of a wireless communication network, in accordance with an embodiment of the present invention. 6 shows a cut-out control apparatus for controlling a mobile terminal to switch from a local access node to another access node in an access node of a UMB network, in accordance with an embodiment of the present invention. It is considered that the access node will encounter the mobile terminal cut-in and cut-out. Therefore, the illustrated hand-in control device 50 and the cut-out control device 60 are preferably located in the respective access nodes shown in FIG.

Specifically, the cutting control device 50 includes: a first receiving device 500, an obtaining device 501 and processing device 502, the obtaining device 501 further includes a first extracting device 5010, a query device 5011, a second extracting device 5012, and a determining device 5013. The processing device 502 further includes a load determining device 5020 and a slave processing device 5021. The cut-out control device ⁶⁰ includes: a first providing device 600, a switching response receiving device 601, a second providing device 602, and a second receiving device 603.

Figure 7 illustrates an auxiliary device for assisting handover control of an mobile terminal from one access node to another in a mobile terminal of a wireless communication network in accordance with an embodiment of the present invention. The illustrated auxiliary device 70 is preferably located in each of the mobile terminals shown in FIG. 2.

Specifically, the auxiliary device 70 includes a third providing device 700, which specifically includes: a handover request generating device 7000 and a handover request transmitting device 7001, where the handover request generating device 7000 further includes: an indication information generating device 70000, a message generating device 70001.

A detecting means, not shown in the figure, at the mobile terminal 21 constantly detects the pilot signal strength from a plurality of ANs in the vicinity, and periodically judges whether or not the condition for triggering the switching is satisfied. Initially, since the mobile terminal 21 is closer to the service AN, the strength of the pilot signals from other ANs is negligible from the perspective of switching from the perspective of the service AN. Therefore, the mobile terminal 21 reports only the detected pilot signal strength from the access node 11 to the access node 11 based on the prior art.

Since the mobile terminal 21 is using the VoIP service and moving to the border area of the cells A, B. Thus, after one time detecting the intensity of the pilot signal, the detecting means determines that the condition of the trigger switching has been satisfied. Those skilled in the art understand that the conditions under which the detection device triggers the switching are varied and can be well supported by the proven mechanisms in the prior art. For example, it may be triggered when the signal strength from the access node 10 exceeds a predetermined intensity threshold, or when the ratio of the signal strength from the access node 10 to the signal strength from the access node 11 exceeds a predetermined ratio threshold. To trigger.

Thus, the handover request generating means 7000 generates a handover request message, such as a RUM message in the UMB network. In order to satisfy the condition for implementing the handover, the identification information of the mobile terminal 21 as the handover target, such as a logical number or the like, is included. This information can be seen The user characteristic information of the mobile terminal 21 is made. In addition, according to a specific embodiment of the present invention, the handover request message generated by the message generating device 7011 further includes a message generated by the indication information generating device 7010 for indicating a service type and/or user feature information of the mobile terminal. Switching priority indication information.

When considering the role of the user characteristic information, the generation of the handover priority indication information will preferably include the following two parameters: user characteristic information, service type. Those skilled in the art understand that there are multiple implementation manners for determining handover priority indication information based on the above two parameters, including but not limited to:

Switch priority indication information generation method 1 :

Switching priority indication information generation method 2:

It is understood by those skilled in the art that, in the foregoing manner, the target node may face multiple mobile terminals requesting handover with a priority of "High". In this case, the target terminal may be processed according to the time sequence in which the request message is received, or The idea of the invention further defines the handover priority indication information in detail, or increases the number of handover priority levels indicated by the handover priority indication information, so as to try to make different handover requests have priority differences. The details are as follows: When using any of the foregoing generation manners, if two handover requests from different mobile terminals have the same handover priority indication information due to the service type equivalent or the user status corresponding to the user characteristic information, The target AN may be subdivided in the following manner. For example, when the switching request of two gold medal users is simultaneously determined to be "High", the priority level is further differentiated according to the type of service, that is, the highest priority is achieved for the gold medal user who uses the VoIP or VT service, and then Switching is done for Gold users who use other services. Or, when two users using VoIP or VT services occur In the case of priority conflicts, the respective switching needs are met in the order of gold, silver and bronze users. For the handover request of the terminal that also uses the high latency sensitivity service for the gold card user, the time of receiving the handover request message may be used as a reference for determining the sequence in which the handover needs are met.

The handover request message generated by the message generating means 7011 is sent to the access node 11 by the handover request transmitting means 7001.

Thereafter, the second receiving device 603 at the access node 11 receives the handover request message and forwards the handover request message to the target AN, i.e., the access node 10, by the first providing device 600. Of course, the forwarding referred to here is to be understood as the forwarding of the "handover request". The specific implementation form further includes: the first providing device 600 parses the incoming handover request message, that is, the RUM, and obtains the handover priority. The level indication information is added to the generated A 16-Session Transfer Request message and sent to the target AN.

After receiving the handover request message from the access node 11, for example, the A-Session Transfer Request, the obtaining device 501 obtains the service type with the mobile terminal 21 and/or according to the message, the first receiving device 500 at the access node 10. Or switching priority related information related to user characteristic information. In this example, first, the first extraction means 5010 extracts the handover priority indication information from the A16-Session Transfer Request, and then, preferably, the determination means 5013 determines whether the handover priority indicated by the handover priority indication information is legal. . We assume that the mobile terminal generates the handover priority indication information in the above-described generation mode 2, and therefore, the handover request originating from the mobile terminal 21 should include the indication information "High". While acknowledging the generation mode, the access node 10 can know the type of service that the mobile terminal 21 is currently performing, for example, initiating a query to the source AN, and the determining device 5013 determines that the extracted handover priority indication information is legal. Thus, it is taken as the handover priority related information finally obtained by the obtaining means 501, which information is related to the service type and the user characteristic information in this example.

The processing device 502 determines whether to perform the handover according to the obtained handover priority related information related to the service type and the user feature information of the mobile terminal 21. Specifically and preferably, the load determining device 5020 and the slave processing device 5021 are connected thereto. Incoming node 10 current load conditions to determine different handover request processing mechanisms. Specifically, the load determining means ⁵⁰²⁰ periodically determines and maintains its own load, or re-determined at each time it receives the handover request message. The load of an access node mentioned herein generally refers to the occupancy or total amount of transmission resources on its air interface. Of course, the load should be understood as any possible restriction on the access node 10 to satisfy the handover of the mobile terminal. The load of the requested resource, that is, if the processor speed of the access node 10 is very slow, it takes a long time for the multiple handover request messages to be processed to be parsed, regardless of whether the request is allowed or not. If it is rejected, then even if the resources on the air interface are sufficient, the traffic of the mobile terminal with high handover priority will be interrupted due to the delay caused by waiting for the handover. Of course, the situation that the access node has poor processing capability is extremely extreme. Therefore, the load specific indication of the transmission resource occupancy on the air interface is taken as an example.

The lower load means that the access node 10 has sufficient transmission resources on the air interface on the user side for allocation. Therefore, the slave processing device 5021 can select to respond to the handover requested by each mobile terminal according to the conventional handover processing mechanism. In other words, the radio resource may be allocated to the access node in the chronological order of the access request message. Specifically, a handover response message is generated from the processing device 5021, and includes related information indicating a radio resource allocated to the mobile terminal 21, the handover response message being received by the handover response receiving device 601 at the access node 11 and provided to the second The device 602 is further provided, and the latter obtains related information of the radio resource from the handover response message, and informs the mobile terminal 21 to implement handover.

On the other hand, if the load judging device 5020 finds that the access node 10 has already undertaken a large number of mobile terminal service transmission operations, the vacant transmission resources on the air interface are very limited, for example, only one VoIP service or one web browsing service can be satisfied. Plunging, based on the assumption of the mobile terminal 22 above, that the mobile terminal 22 is using FTP to download traffic and gradually moving from the central location of the cell C to the boundary of the cells A, C, and thus, based on the above handover priority indication In the information generation method 2, the handover request message corresponding to the mobile terminal 22 correspondingly includes the indication information "Low". Therefore, even if the handover request message corresponding to the mobile terminal 22 forwarded by the access node 12 precedes the mobile terminal The corresponding handover request message arrives at the access node 10, and since the handover priority of the mobile terminal 21 is high, the processing device 5021 preferentially allocates only the remaining radio transmission resources to the mobile terminal 21 to complete the handover. For the request of the mobile terminal 22, the processing device 5021 may choose to directly send a corresponding response message indicating that the handover request of the mobile terminal 22 is rejected, and may be received by the handover response receiving device 601 at the access node 11. The second providing means 602 is used to inform the mobile terminal 21 of the corresponding information based on the message. Optionally, the processing device 5021 may choose to postpone the request, that is, during the validity period of the request, if some other mobile terminal terminates the service or switches to another access node, the vacated radio resource It can be assigned to the mobile terminal 22 to complete this handover.

After the request and control process of the above handover is completely described, the process of determining whether the handover priority indication information performed by the determining means 5013 at the access node 10 is legal is additionally introduced. It is well known that in a communication network, there is absolutely no malicious user in an ideal state. Therefore, it is not excluded that a user tampers with the possibility of switching priority indication information in the generated handover request message by an illegal means, that is, one is using The Bronze user of the web browsing service generates a handover request message containing "High" for the mobile terminal. At this time, the determining device 5013 of the access node 10 is further required to perform screening. Specifically, the access node 10 as the target AN may initiate a query to the source node, thereby knowing the type of service that the user is actually using, and according to the user. User characteristic information and service type to determine the switching priority that it should have, and compare with the content of the handover priority indication information. If the latter is found to be higher than the former, it is determined by the handover priority indication information. Switching priority is invalid. After obtaining this negative determination result, the slave processing device 5021 at the access node 10 has the following two options: 1. The handover priority re-determined by the access node 10 according to the collected information is taken as the obtained mobile terminal. Switching priority, and then performing the subsequent step S6; 2. rejecting the handover request of the mobile terminal. According to another embodiment of the present invention, the handover request message generated by the handover request generating apparatus 7000 at the mobile terminal 21 includes its user characteristic information, and The service type related information of the service being used by the mobile terminal 21. Those skilled in the art understand that the "service type related information" includes any information that enables the target AN to know the type of service of the mobile terminal. In this case, the cut-in control device 50, the cut-out control device 60, and The working process of the auxiliary device 70 is as follows.

The handover request generating means 7000 generates a handover request message containing its user characteristic information (e.g., logical number) and service type related information. The form of the service type related information is, for example but not limited to, "000", indicating VoIP; "001", indicating VT; "010", indicating FTP; "011", indicating web browsing; "100" (representing idle).

Then, when the generated handover request message arrives at the access node 10, the access node 10 determines the handover priority of the mobile terminal based on the user feature information and the service type related information. Specifically, the service type related information is extracted from the second extraction device 5012, and is sent to the query device 5011. Then, the query device 5011 obtains the corresponding idea by using any of the foregoing methods for switching the priority indication information generation manner. Switch priority related information. Wherein, when the idea of the mode 2 is utilized, if a priority difference cannot be formed between two or more handover requests according to the service type, the user level corresponding to the user feature information, such as a gold medal or a silver medal, may be further , Bronze users, to subdivide.

The subsequent processing is basically the same as the previous embodiment, and details are not described herein again. According to still another embodiment of the present invention, the handover request message generated by the message generating means 7011 at the mobile terminal 21, such as RUM, contains only user characteristic information of the corresponding user. Then, after being forwarded by the source AN, the target AN, that is, the access node 11 only knows at this time which mobile terminal and the corresponding user are requesting handover. At this time, the working mode of the obtaining device 501 includes but is not limited to the following cases:

The implementation of the obtaining device 501 is as follows:

The handover priority related information of the handover request is determined only according to the user characteristic information. Specifically, the access node 10 determines whether the mobile terminal belongs to a gold medal, a silver medal, or a bronze medal user, and assigns a high to low priority accordingly. Usually, in order to avoid confusion, each mobile terminal follows the same rules, and thus, the handover request from other mobile terminals is eliminated. The information also contains only user feature information. At this time, the gold card user's switching request unconditionally takes precedence over the silver card user's switching request, and the latter unconditionally takes precedence over the bronze user's switching request. The order of priority of the refinement is determined by the order in which the handover request messages are received between the handover requests of users of the same level.

The implementation mode 2 of the obtaining device 501 is as follows:

Since the source AN is aware of the service type of the service currently used by the mobile terminal requesting the handover, the obtaining means 501 initiates the corresponding source AN according to the user feature information included in the handover request message received by the first receiving device 500. The query of the business type related information, and the subsequent priority determination based on the query result.

The foregoing implementation manner 2 has a modification that after the second receiving device 603 at the access node 11 receives the handover request message sent by the mobile terminal 21, the first providing device 600 checks whether the message includes the service type. Related information, after learning that there is no service type related information, the first providing device 600 actively queries the service type of the service currently used by the mobile terminal, and writes the corresponding service type related information to the access node. 10 in the message, thereby helping the latter to perform the cut-in control. The switching process involved in the switching process described above is particularly applicable to 2G and 3G communication networks. For 3.5G and 4G communication networks, the handover process is independent of the source AN. The UMB network is used as an example to describe the device block diagram as follows.

It is understood by those skilled in the art that in a UMB network, since there are definitions of a forward link and a reverse link, and the forward link and the reverse link of the mobile terminal can be served by different access nodes, and Although only one of the links will be described hereinafter, the disclosure of the present invention is not sufficient.

Since the object of discussion is a UMB network, the mobile terminal 21 is also referred to as an AT, and the source AN is a Forward Link Serving eBS (FLSE), and the target AN is an ideal forward link enhanced serving base station ( DFLSE, Desired Forward Link Serving eBS) 0 FIG mobile terminal 21 being in communication with VoIP network entities not shown in FIG. 25 a, which may also be referred to as the DAP entity, i.e., a data attachment point (data attachment point), and In the case of the forward link of the mobile terminal 21, the handover process will be the main To update the transmission path of IP voice data from DAP.

The handover request generating means 700 at the mobile terminal 21 generates a handover request message, which may include only the corresponding user feature information, and may further include service type related information and/or handover priority indication information. The various information components in the message have been discussed separately above and will not be described again. It is worth mentioning that the handover request message in this example is directly transmitted by the handover request transmitting apparatus 7001 to the target AN, that is, the access node 10, via the physical layer and the MAC layer channel [R-CDCCH, rcqich]. Wherein, R-CDCCH is a reverse CDMA data control channel, that is, a Reverse CDMA Data Control Channel, and rcqich is a reverse channel shield indicating channel, that is, a Reverse Channel Quality Indication Channel.

In the case where the AT is allowed to switch to the DFLSE, the slave processing device 5021 at the DFLSE uses the Forward Link Assignment Block (FLAB) to allocate the switched radio transmission resource to the AT, and notifies that the DAP handover has occurred. , please send subsequent data to the access node. Those skilled in the art understand that there is no strict order relationship between the above resource allocation process and the notification process to the DAP.

Thereafter, the DAP and the AT respectively transmit and receive the IP voice data on the forward link according to the above indication of the DFLSE, and the handover is smoothly implemented. In the above, the handover procedure triggered by the mobile terminal is mainly described. In practical applications, the handover is triggered by the source AN. This may be due to the consideration of balancing the load between the access nodes, and preferably requires interworking load information between the various access nodes. For example, referring to FIG. 2, when the mobile terminal 21 is in a certain position between the access nodes 10, 11, the serving AN, that is, the access node 11, has a problem that the wireless transmission resource of the user-side air interface is overloaded. The access node 11 does not wait for the terminal to trigger the handover, and the access node 11 learns that the quality of the transmission channel between the mobile terminal 21 and the access node 10 is sufficient to support the transmission of IP voice data according to the quality of the pilot signal reported by the mobile terminal 21, and the access node 10 more idle wireless transmission resource, then the access node 11 through the first active thereon to provide a trigger device 10 to ⁶⁰⁰²¹ from the mobile terminal via the front contact 11 to access the access node to the access node via a link Switching into the forward link. Specific and excellent Optionally, in the handover request message sent by the first providing device 600 to the access node 10, the service type related information of the service that the mobile terminal 21 is currently performing, such as "000", indicates VoIP. Upon receiving the request from the access node 11, the access node 10 can perform subsequent operations based on the manner described above.

The specific embodiments of the present invention have been described above. It is to be understood that the invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the appended claims.

Claims

Claim

A method for controlling a handover of a mobile terminal from another access node to a local access node in an access node of a wireless communication network, comprising the steps of:

Receiving a handover request message related to one or more mobile terminals, the handover request message being used to request that the one or more mobile terminals be handed over from the corresponding other access node to the local access node;

Obtaining, according to the handover request message, handover priority related information associated with the service type and/or user feature information of each mobile terminal;

c processing the respective handover requests based on the obtained handover priority related information.

The method according to claim 1, wherein the handover request message includes user feature information of the corresponding mobile terminal, and further includes any one or more of the following:

- handover priority indication information corresponding to the mobile terminal;

- Information about the type of service of the mobile terminal.

The method according to claim 2, wherein, when the handover request includes handover priority indication information corresponding to the mobile terminal, the step b includes: bl. from the handover request message Extracting the handover priority indication information; b3. using the extracted handover priority indication information as the obtained handover priority related information

4. The method according to claim 3, further comprising: after the step M and before the step b3:

B2. determining, according to user characteristic information of the user terminal, whether the handover priority indicated by the handover priority indication information is legal;

The step b3 further includes:

- when the handover priority indicated by the handover priority indication information is legal, the extracted handover priority indication information is used as the obtained handover priority related information.

The method according to claim 2, wherein when the handover request message includes service type information of the mobile terminal, the step b includes: b Γ . extracting, by the handover request message, the service type related information of the mobile terminal;

B2, querying, according to the extracted service type related information, handover priority related information associated with the service type related information;

B3,. The handover priority related information associated with the information about the service type queried is used as the obtained handover priority related information.

6. The method according to claim 5, wherein before b3 in step b, the method further comprises:

- querying handover priority related information associated with the user characteristic information according to user characteristic information of the mobile terminal;

The step b3 further includes:

- handover priority related information associated with the service type related information, and handover priority related information associated with the user characteristic information as the obtained handover priority related information.

The method according to any one of claims 1 to 6, wherein the step c comprises:

- preferentially satisfying the handover request with a higher handover priority according to the obtained handover priority related information related to the service type and/or user characteristic information of each mobile terminal.

The method according to claim 7, wherein the step c further comprises: c1: determining whether the load of the access node is higher than a predetermined threshold;

If the load of the access node is higher than the predetermined threshold, the handover priority is preferentially satisfied according to the obtained handover priority related information related to the service type and/or the user feature information of each mobile terminal. High switching request.

A method for controlling a handover of a mobile terminal from a local access node to another access node in an access node of a wireless communication network, comprising the steps of:

B. providing, for the another access node, handover control assistance information corresponding to the mobile terminal, where the handover control assistance information is related to user feature information and/or service type of the mobile terminal.

The method according to claim 9, wherein the step B further comprises:

C. receiving a handover response message from the another access node, where the handover result indication information indicating a result of the handover is included;

D. providing the handover result indication information to the mobile terminal based on the handover response message.

The method according to claim 9 or 10, wherein before the step B, the method further comprises:

A. receiving a handover request message from the mobile terminal;

The step B further includes:

- providing the other access node with the handover control assistance information based on the received handover request message.

12. A method for assisting handover control of a mobile terminal from one access node to another in a mobile terminal of a wireless communication network, comprising the steps of:

0. The access node is provided with handover control assistance information corresponding to the mobile terminal, and the handover control assistance information is related to user feature information and/or service type of the mobile terminal.

13. The method of claim 12, wherein the step 0 comprises:

01. Generate a handover request message, where the handover control assistance information corresponding to the mobile terminal is included;

02. Send the generated handover request message to the access node.

The method according to claim 13, wherein the handover control assistance information includes handover priority indication information, and the step ol includes:

011. generating handover priority indication information according to user characteristic information of the mobile terminal and/or a service type of the service being used;

012. Generate a handover request message, where the handover priority indication information is included.

15. A hand-in control device for controlling a mobile terminal to be handed over by another access node to a local access node in an access node of a wireless communication network, comprising the steps of: a first receiving device, configured to receive a handover request message related to one or more mobile terminals, where the handover request message is used to request to send the one or more mobile terminals from the corresponding other access node to the local access node Switching;

Obtaining means, configured to obtain, according to the handover request message, handover priority related information associated with the service type and/or user feature information of each mobile terminal; processing means, configured to: according to the obtained handover priority Information to process the respective handover requests.

The hand-cut control device according to claim 15, wherein the switching request message includes user feature information of the corresponding mobile terminal, and further includes any one or more of the following:

- Information about the type of service of the mobile terminal.

The severance control apparatus according to claim 16, wherein when the handover request includes handover priority indication information corresponding to the mobile terminal, the obtaining apparatus comprises:

And a first extracting device, configured to extract the switching priority indication information from the handover request message, and use the extracted handover priority indication information as the obtained handover priority information.

The cutting control device according to claim 17, wherein the obtaining device further comprises:

a determining device, configured to determine, according to user characteristic information of the user terminal, whether the handover priority indicated by the handover priority indication information is legal, and when the handover priority indicated by the handover priority indication information is legal, The extracted handover priority indication information is used as the obtained handover priority information.

The sever control apparatus according to claim 16, wherein when the handover request message includes service type information of the mobile terminal, the obtaining means includes

a second extracting device, configured to extract, by the handover request message, the service type related information of the mobile terminal; And a querying device, configured to query, according to the service type related information, handover priority related information associated with the service type information, and use, as the location, the handover priority related information that is associated with the service type information that is queried The switching priority related information obtained.

The cutting control device according to claim 19, wherein the querying device is further configured to: query, according to user characteristic information of the mobile terminal, switching priority related information associated with the user feature information And switching priority information related to the service type information and handover priority related information associated with the user characteristic information as the obtained handover priority related information.

The cutting control device according to any one of claims 15 to 20, characterized in that

The processing device is further configured to preferentially satisfy the handover request with a higher handover priority according to the obtained handover priority related information associated with the service type and/or the user feature information of each mobile terminal.

The cutting control device according to claim 21, wherein the processing device comprises:

a load determining device, configured to determine whether a load of the access node is higher than a predetermined threshold;

And the processing device, configured to: when the load of the access node is higher than the predetermined threshold, according to the obtained handover priority information associated with the service type and/or user feature information of each mobile terminal, preferentially satisfying Switch the switching request with higher priority.

A cut-out control device for controlling a mobile terminal to switch from a local access node to another access node in an access node of a wireless communication network, comprising: a first providing device, configured to Another access node provides handover control assistance information corresponding to the mobile terminal, and the handover control assistance information is related to user feature information and/or service type of the mobile terminal.

24. The cut-out control apparatus according to claim 23, further comprising: a handover response receiving apparatus, configured to receive a handover response message from the another access node, where The result of the switching result indication information; The second providing means is configured to provide the handover result indication information to the mobile terminal based on the handover response message.

The cutting control device according to claim 23 or 24, further comprising:

a second receiving device, configured to receive a handover request message from the mobile terminal, where the second providing device is further configured to: provide the handover control to the another access node based on the received handover request message Supplementary information.

An auxiliary device for assisting handover control of an mobile terminal from one access node to another in a mobile terminal of a wireless communication network, characterized by comprising:

And a third providing device, configured to provide the access node with handover control assistance information corresponding to the mobile terminal, where the handover control assistance information is related to user feature information and/or service type of the mobile terminal.

27. The auxiliary device according to claim 26, wherein the third providing device comprises:

a handover request generating apparatus, configured to generate a handover request message, where the handover control assistance information corresponding to the mobile terminal is included;

And a handover request sending device, configured to send the generated handover request message to the access node.

The auxiliary device according to claim 27, wherein the handover control assistance information includes handover priority indication information, and the handover request generation device includes: indication information generation device, according to user characteristic information of the mobile terminal And/or the service type of the service being used, generating handover priority indication information;

The message generating device is configured to generate a handover request message, where the handover priority indication information is included.

29. An access node in a wireless communication network, characterized by comprising a switch for controlling a handover of a mobile terminal from another access node to a local access node according to any one of claims 15 to 22. The control device and/or the cut-out for controlling the handover of the mobile terminal from the own access node to another access node according to any one of claims 23 to 25 Control device.

30. A mobile terminal in a wireless communication network, comprising: handover control for controlling a mobile terminal from one access node to another according to any one of claims 26 to 28. Auxiliary auxiliary devices are provided.