CN102256373A - Call accessing method and system - Google Patents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a call accessing method. The call accessing method comprises the following steps of: configuring corresponding reserved resource for each call level; when a call requests to be accessed, determining a call level of the call requesting to be accessed; and when idle resource does not exist, allocating the corresponding reserved resource to the call according to the call level of the call requesting to be accessed, and releasing the source of a call with the lowest priority, wherein the released resource is taken as the reserved resource. The invention further provides a call accessing system. According to the technical scheme, a call which requests to be accessed and has a high priority can be reliably accessed and the success rate of call accessing is improved.
Description
Technical Field
The present invention relates to mobile communication systems, and in particular, to a call access method and system.
Background
Currently, known call Priority Access services include Priority Access and Priority Access Channel Assignment (PACA), Multi-Priority and preemption (MLPP), Wireless Priority Service (WPS), and united states Government Emergency Telecommunication Service (GETS), and these services and their protocols mainly describe the Priority allocation of resources necessary for Priority call connection.
For the preferential allocation of resources, there are generally two implementations: the first is queuing mode (QueueWay), when the call accessed preferentially occupies the resource, if there is no free resource, the current call is added into the queue according to the order of priority from high to low, once there is free resource, it is used by the first call in the queue preferentially. The second mode is a preemptive mode (Forced Way). In the process of priority access, if no idle resource exists, the resource of the call with low priority needs to be released first, and after the release is successful, the resource is reserved for the call with priority access.
The two resource priority allocation modes both require a high-priority call to experience a queuing time, which does not meet the requirement of rapid access of emergency communication, and if the low-priority call fails to release resources, the high-priority call cannot be accessed, so that the emergency communication cannot be ensured to be connected certainly, and the reliability is not high.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a call access method and system, which can implement reliable access of a high-priority call requesting access, and improve the success rate of call access.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a call access method, which comprises the following steps:
configuring corresponding reserved resources for each call class;
when a call request is accessed, determining the call grade of the call requesting access, and when no idle resource exists, allocating the corresponding reserved resource to the call according to the call grade of the call requesting access, releasing the resource of the call with the lowest priority, and taking the released resource as the reserved resource.
In the above-mentioned method, the first step of the method,
before allocating the corresponding reserved resource to the call according to the call level of the call requesting access, the method further includes: judging the current resource use condition;
the method further comprises the following steps: when the idle resources exist, the idle resources are allocated to the call requesting access.
In the above method, the configuring the corresponding reserved resource for each call class is:
configuring different call grades according to call requirements, configuring corresponding reserved resources for each call grade by a Mobile Switching System (MSS) according to the call grades, wherein the types of the reserved resources of each call grade are one or more, the types of the reserved resources comprise ground circuit resources, interoffice circuit resources and vocoder resources, and configuring the quantity of the reserved resources of each call grade according to the requirements.
In the above method, the configuring the corresponding reserved resource for each call class is:
configuring different call grades according to call requirements, configuring corresponding reserved resources for each call grade by a Base Station Subsystem (BSS) according to the call grades, wherein the types of the reserved resources of each call grade are one or more, the types of the reserved resources comprise ground circuit resources, vocoder resources and air interface resources, the air interface resources comprise power, Walsh codes and channel units, and configuring the number of the reserved resources of each call grade according to the requirements.
In the above method, the determining the call class of the call requesting access is:
according to the priority attribute of the call requested to be accessed, the priority attribute is stored in the core network equipment in advance, and/or according to the dialing mode corresponding to the call requested to be accessed, the MSS or the BSS determines the call grade of the call requested to be accessed.
In the above method, the allocating the corresponding reserved resource to the call according to the call level of the call requesting access is:
and the MSS or the BSS allocates the corresponding reserved resources configured for the call class to the call according to the determined call class of the call requesting access.
In the above method, the releasing the resource of the call with the lowest priority, and taking the released resource as a reserved resource, includes:
the MSS or BSS judges whether the number of the current reserved resources is smaller than a preset minimum threshold of reserved resources, if so, the MSS or BSS searches the current accessed call with the lowest priority, releases the resources occupied by the accessed call with the lowest priority, and sets the released resources as reserved resources; otherwise, the MSS or BSS does not release the resources for the lowest priority call.
In the above method, the determining of the current resource usage is:
the MSS or BSS determines the current resource usage, which includes the existence of idle resources and the absence of idle resources.
The invention also provides a call access system, which is applied to MSS or BSS, and comprises: the system comprises a configuration module, a call grade judgment module, an allocation module and a resource release module; wherein,
the configuration module is used for configuring corresponding reserved resources for each call grade;
the call grade judging module is used for determining the call grade of the call requesting for access when a call request is accessed;
the allocation module is used for allocating corresponding reserved resources to the call according to the call grade of the call which requires access when no idle resources exist;
and the resource releasing module is used for releasing the resources of the call with the lowest priority and taking the released resources as reserved resources.
In the above-mentioned system, the first and second sensors are arranged in a single circuit,
the system further comprises: the judging module is used for judging the current resource use condition;
the allocation module is further configured to allocate the idle resources to the call requesting access when the idle resources exist.
The call access method and the system provided by the invention configure corresponding reserved resources for each call grade; when there is a call request for access, determining a call class of the call requesting access, and when there is no free resource, allocating the corresponding reserved resources to the call according to the call level of the call requesting access, releasing the resources of the call with the lowest priority, using the released resources as reserved resources, reserving the resources for the calls with different call levels by using the method, when no free resources exist, no queuing is needed for the call requesting access, only the reserved resources need to be allocated to the call requesting access, and the reserved resources are configured again after the allocation, the requirement of quick access of emergency communication can be met, the direct access can be realized without waiting for the call release resources with low priority, therefore, reliable access of calls with high priority and requiring access can be achieved, emergency communication can be guaranteed to be communicated certainly, and reliability is high.
Drawings
Fig. 1 is a flow chart illustrating a method for implementing call access according to the present invention;
fig. 2 is a flowchart illustrating a first embodiment of a method for implementing call access according to the present invention;
fig. 3 is a flowchart illustrating a second embodiment of a method for implementing call access according to the present invention;
fig. 4 is a flowchart of a third embodiment of the call access method of the present invention;
fig. 5 is a schematic structural diagram of a call access system implemented by the present invention.
Detailed Description
The basic idea of the invention is: configuring corresponding reserved resources for each call class; when a call request is accessed, determining the call grade of the call requesting access, and when no idle resource exists, allocating the corresponding reserved resource to the call according to the call grade of the call requesting access, releasing the resource of the call with the lowest priority, and taking the released resource as the reserved resource.
The invention is further described in detail below with reference to the drawings and the specific embodiments.
The present invention provides a call access method, fig. 1 is a flow chart of the call access method implemented by the present invention, as shown in fig. 1, the method includes the following steps:
step 101, configuring corresponding reserved resources for each call class;
specifically, different call levels are configured according to call requirements, for example, if the call needs to be an emergency call, a high priority call and other calls, the call levels are correspondingly configured as "emergency", "high" and "low", that is, if the call level is configured as "emergency", the call is an emergency call, if the call level is configured as "high", the call is a high priority call, and if the call level is configured as "low", the call is a low priority call;
a Mobile Switching System (MSS, Mobile Switching Center System) configures corresponding reserved resources for each call class according to the call class, where the type of the reserved resources for each call class may be one or more, where the type of the reserved resources includes terrestrial circuit resources, interoffice circuit resources, vocoder resources, etc., the number of the reserved resources for each call class may be the same or different, and the number of the reserved resources may be configured according to the requirement; or, a Base Station Subsystem (BSS) configures corresponding reserved resources for each call class according to the call class, where the type of the reserved resources for each call class may be one or more, where the type of the reserved resources includes ground circuit resources, vocoder resources, air interface resources, and the like, where the air interface resources include power, walsh codes (walsh codes), channel units, and the like, the number of the reserved resources for each call class may be the same or different, and the number of the reserved resources may be configured according to requirements;
for example, assuming that there are three priority calls, emergency priority, high priority, and low priority, the cell to be accessed has 25 channels in total, as shown in table 1:
TABLE 1
Emergency priority calls may use 25 channels, of which 2 are reserved exclusively for first priority calls, high priority calls may use 23 channels, of which two are reserved for second priority calls, first priority calls may use, and low priority calls may use only 21 channels.
Step 102, when a call request is accessed, determining the call grade of the call requesting to be accessed;
specifically, the call requesting access is stored in the core network device such as HLR before the number assignment, if there is a call request access, the MSS or BSS may obtain the priority attribute of the call requesting access from the core network device, and determine the call class according to the priority attribute of the call requesting access, or the MSS or BSS may also determine the call class according to the dialing mode corresponding to the call requesting access; wherein, the call requesting access can also be a call hard-handed over to the MSS or BSS;
for example, if the priority attribute of the call requesting access is "emergency", the call requesting access is an emergency call, the call level thereof is "emergency", if the priority attribute of the call requesting access is "high", the call requesting access is a high priority call, the call level thereof is "high", and if the priority attribute of the call requesting access is "low", the call requesting access is a low priority call, the call level thereof is "low"; for example, when the call number requested to be accessed is 119, the call level of the 119 number may be determined to be "urgent" according to the priority attribute of the 119 number.
103, judging the current resource use condition, if an idle resource exists, executing step 104, and if no idle resource exists, executing step 105;
specifically, after the MSS or BSS determines the call class of the call requesting access, it needs to determine the current resource usage; the current resource use condition comprises the existence of idle resources and the nonexistence of the idle resources; if the current resource usage is that there are free resources, step 104 is performed, and if the current resource usage is that there are no free resources, step 105 is performed.
Step 104, allocating idle resources to the call requesting access;
specifically, the MSS or BSS allocates the idle resources to the call requesting access, and performs a normal call setup procedure.
Step 105, according to the call level of the call requesting access, allocating the corresponding reserved resource to the call, releasing the resource of the call with the lowest priority, and using the released resource as the reserved resource;
specifically, if there is no idle resource, the reserved resource is needed to be used, and the MSS or BSS allocates the corresponding reserved resource configured for the call class to the call according to the determined call class of the call requesting access;
meanwhile, because the reserved resources are allocated to the call requesting access, the reserved resources are also required to be configured, the MSS or BSS judges whether the number of the currently reserved resources is smaller than a reserved resource minimum threshold, if the number of the reserved resources is smaller than the reserved resource minimum threshold, the MSS or BSS searches for the call with the lowest priority which is currently accessed, releases the resources occupied by the call with the lowest priority which is accessed, sets the released resources as the reserved resources, and the released resources are allocated to other calls requesting access as the reserved resources; otherwise, the MSS or BSS does not need to release the resources of the call with the lowest priority; the minimum threshold of the reserved resource may be configured in advance on the MSS or the BSS according to the requirement.
Example one
Fig. 2 is a flowchart illustrating a first embodiment of a method for implementing call access according to the present invention, as shown in fig. 2, the method includes the following steps:
in step 201, the calling subscriber MS1 sends a Service Request (CM Service Request) message to the MSs through the BSS.
In step 202, the MSS determines the call class of the call and sends the call class to the BSS of the MS1 through an Assignment Request (Assignment Request) message.
Step 203, the BSS of the calling subscriber MS1 determines that there is no idle resource, and allocates reserved resources to the call; if there is idle resource, it allocates idle resource to the call, after the allocation is completed, the BSS of the calling subscriber MS1 sends Assignment Complete (Assignment Complete) message to the MSs.
Step 204, after the BSS corresponding to the calling subscriber MS1 finds that the reserved resource is allocated, send a Clear Request (Clear Request) message to the MSs, and Request to release the resource occupied by the call of the subscriber MS2 with the lowest priority.
In step 205, after receiving the Clear Request message, the MSS sends a Clear Command message to the BSS of the user MS2 for confirming the resource clearing.
The BSS of the subscriber MS2 sends a Clear Complete message to the MSs and sets the resource as a reserved resource, step 206.
Example two
Fig. 3 is a flowchart of a second embodiment of the method for implementing call access according to the present invention, which is a specific implementation method for modifying a call level of a call, in this embodiment, both a user MS1 and a user MS2 are priority users, and MS1 is a calling party, MS2 is a called party, and a call level of MS2 of the called party is higher than a call level of MS1 of the calling party, where the system updates the call level of the calling party, as shown in fig. 3, the method includes the following steps:
step 301, after receiving the CM Service Request message of the BSS where the calling subscriber MS1 is located, the MSS determines whether the call is a voice call Service.
In step 302, the MSS determines the call class (call class X) of the MS1 of the calling subscriber, and sends an Assignment Request message to the BSS where the MS1 of the calling subscriber is located.
Step 303, the BSS where the calling subscriber MS1 is located determines that there is no idle resource, and allocates reserved resources to the call; if there is idle resource, allocating idle resource to the call, and sending Assignment Complete message to MSS after allocation;
meanwhile, if the reserved resources are allocated to the call, the BSS where the calling subscriber MS1 is located needs to determine whether the number of the currently reserved resources is smaller than the minimum threshold of the reserved resources after the reserved resources are allocated, if so, the BSS where the calling subscriber MS1 is located needs to request to release the resources occupied by the currently accessed call with the lowest priority, and the released resources are set as the reserved resources.
In step 304, the MSS sends a paging request message to the BSS where the called subscriber MS2 is located.
In step 305, the BSS where the called subscriber MS2 is located replies to the MSs with a paging response message.
Step 306, the MSS selects a call with a higher call level from the calling subscriber and the called subscriber, and sends an Assignment Request message to the BSS where the called subscriber MS2 is located; if the called user's priority Y is higher than the calling user's priority X, then a priority access channel assignment and Update (PACA Update) message is sent to the BSS where the calling user MS1 is located at the same time, and the calling level of the calling user is updated to a higher calling level Y.
In step 307, after the BSS where the calling subscriber MS1 is located completes updating the call level of the MS1, it sends a priority access channel assignment and Update acknowledgement (PACA Update ACK) message to the MSs for acknowledgement.
Step 308, the BSS where the called user MS2 is located sends an assignment complete message to the MSs after completing the assignment.
EXAMPLE III
Fig. 4 is a flowchart of a third embodiment of a method for implementing call access according to the present invention, in this embodiment, a user MS1 is a priority user needing hard handover, a call class of an MS1 is higher than a call class of a calling user MS2, and a processing method for hard handover is shown in fig. 4, where the method includes the following steps:
in step 401, after receiving the hard handover request from the MS1, the MSs sends a handffrequired message to the BSS of the MS1, where the message has the call priority X being used by the MS 1.
Step 402, the BSS of the MS1 determines whether there is idle resource, and if there is no idle resource, allocates reserved resource to the call; if the idle resources exist, the idle resources are distributed to the call for use, and after the distribution is completed, a Handoff Required Ack message is sent to the MSS;
meanwhile, if the reserved resources are allocated to the call, after the reserved resources are allocated, whether the number of the current reserved resources is smaller than the minimum threshold of the reserved resources needs to be judged, if yes, the resources occupied by the currently accessed call with the lowest priority need to be released, and the released resources are set as the reserved resources.
In step 403, the BSS of the MS2 determines that the number of the currently reserved resources is smaller than the minimum threshold of the reserved resources, so that the BSS of the MS2 needs to find the call with the lowest call priority, that is, the BSS of the MS2 determines that the call priority of the MS2 is the lowest, and the BSS of the MS2 sends a Clear Request message to the MSs to Request to release the resources occupied by the MS 2.
After the hard handover of the MS1 is completed, the BSS of the MS1 sends a handover Complete message to the MSs, step 404.
Step 405, after receiving the Clear Request message, the MSS sends a Clear Command message to the BSS of MS2 for confirming the resource release.
The BSS of the MS2 sends a Clear Complete message to the MSs and sets the released resources as reserved resources, step 406.
In order to implement the above method, the present invention further provides a call access system, which is applied to an MSS or BSS, fig. 5 is a schematic structural diagram of the call access system implemented by the present invention, as shown in fig. 5, the system includes: a configuration module 51, a call level judgment module 52, an allocation module 53 and a resource release module 54; wherein,
a configuration module 51, configured to configure corresponding reserved resources for each call class;
a call level judging module 52, configured to determine a call level of a call requesting access when a call request is received;
an allocating module 53, configured to, when there is no idle resource, allocate a corresponding reserved resource to a call according to the call level of the call requesting access;
and a resource releasing module 54, configured to release the resource of the call with the lowest priority, and use the released resource as a reserved resource.
The system further comprises: a judging module 55, configured to judge a current resource usage;
the allocating module 53 is further configured to, when there is an idle resource, allocate the idle resource to the call requesting access.
The configuration module 51 configures corresponding reserved resources for each call class as follows:
configuring different call grades according to call requirements, configuring corresponding reserved resources for each call grade according to the call grades, wherein the types of the reserved resources of each call grade are one or more, the types of the reserved resources comprise ground circuit resources, interoffice circuit resources and vocoder resources, and the quantity of the reserved resources of each call grade is configured according to the requirements.
The configuration module 51 configures corresponding reserved resources for each call class as follows:
configuring different call grades according to call requirements, configuring corresponding reserved resources for each call grade according to the call grades, wherein the type of the reserved resources of each call grade is one or more, the type of the reserved resources comprises ground circuit resources, vocoder resources and air interface resources, the air interface resources comprise power, Walsh codes and channel units, and the number of the reserved resources of each call grade is configured according to the requirements.
The call class determination module 52 determines that the call class of the call requesting access is: and according to the priority attribute of the call requesting access, storing the priority attribute in the core network equipment in advance, and/or according to the dialing mode corresponding to the call requesting access, determining the call grade of the call requesting access.
The allocating module 53 allocates the corresponding reserved resource to the call according to the call level of the call requesting access: and according to the determined call grade of the call requesting access, allocating the corresponding reserved resources configured for the call grade to the call.
The resource releasing module 54 releases the resource of the call with the lowest priority, and takes the released resource as a reserved resource: judging whether the number of the current reserved resources is smaller than a minimum threshold of the reserved resources, if so, searching the call with the lowest priority which is accessed currently, releasing the resources occupied by the call with the lowest priority which is accessed currently, and setting the released resources as the reserved resources; otherwise, the resources of the lowest priority call are not released.
The judging module 55 judges that the current resource usage is: and judging the current resource use condition, wherein the current resource use condition comprises the existence of idle resources and the nonexistence of idle resources.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (10)
1. A call access method, comprising:
configuring corresponding reserved resources for each call class;
when a call request is accessed, determining the call grade of the call requesting access, and when no idle resource exists, allocating the corresponding reserved resource to the call according to the call grade of the call requesting access, releasing the resource of the call with the lowest priority, and taking the released resource as the reserved resource.
2. The method of claim 1,
before allocating the corresponding reserved resource to the call according to the call level of the call requesting access, the method further includes: judging the current resource use condition;
the method further comprises the following steps: when the idle resources exist, the idle resources are allocated to the call requesting access.
3. The method of claim 1, wherein the configuring the corresponding reserved resource for each call class comprises:
configuring different call grades according to call requirements, configuring corresponding reserved resources for each call grade by a Mobile Switching System (MSS) according to the call grades, wherein the types of the reserved resources of each call grade are one or more, the types of the reserved resources comprise ground circuit resources, interoffice circuit resources and vocoder resources, and configuring the quantity of the reserved resources of each call grade according to the requirements.
4. The method of claim 1, wherein the configuring the corresponding reserved resource for each call class comprises:
configuring different call grades according to call requirements, configuring corresponding reserved resources for each call grade by a Base Station Subsystem (BSS) according to the call grades, wherein the types of the reserved resources of each call grade are one or more, the types of the reserved resources comprise ground circuit resources, vocoder resources and air interface resources, the air interface resources comprise power, Walsh codes and channel units, and configuring the number of the reserved resources of each call grade according to the requirements.
5. The method of claim 1, wherein the determining the call class of the call requesting access is:
according to the priority attribute of the call requested to be accessed, the priority attribute is stored in the core network equipment in advance, and/or according to the dialing mode corresponding to the call requested to be accessed, the MSS or the BSS determines the call grade of the call requested to be accessed.
6. The method of claim 1, wherein the allocating the corresponding reserved resource to the call according to the call level of the call requesting access comprises:
and the MSS or the BSS allocates the corresponding reserved resources configured for the call class to the call according to the determined call class of the call requesting access.
7. The method of claim 1, wherein the releasing the resources of the call with the lowest priority, and taking the released resources as reserved resources, is:
the MSS or BSS judges whether the number of the current reserved resources is smaller than a preset minimum threshold of reserved resources, if so, the MSS or BSS searches the current accessed call with the lowest priority, releases the resources occupied by the accessed call with the lowest priority, and sets the released resources as reserved resources; otherwise, the MSS or BSS does not release the resources for the lowest priority call.
8. The method of claim 2, wherein the determining the current resource usage is:
the MSS or BSS determines the current resource usage, which includes the existence of idle resources and the absence of idle resources.
9. A call access system for use in an MSS or BSS, the system comprising: the system comprises a configuration module, a call grade judgment module, an allocation module and a resource release module; wherein,
the configuration module is used for configuring corresponding reserved resources for each call grade;
the call grade judging module is used for determining the call grade of the call requesting for access when a call request is accessed;
the allocation module is used for allocating corresponding reserved resources to the call according to the call grade of the call which requires access when no idle resources exist;
and the resource releasing module is used for releasing the resources of the call with the lowest priority and taking the released resources as reserved resources.
10. The system of claim 9,
the system further comprises: the judging module is used for judging the current resource use condition;
the allocation module is further configured to allocate the idle resources to the call requesting access when the idle resources exist.
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Application publication date: 20111123 |