CN110913352B - PDT system wireless channel resource allocation method and device - Google Patents
PDT system wireless channel resource allocation method and device Download PDFInfo
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- CN110913352B CN110913352B CN201911297071.1A CN201911297071A CN110913352B CN 110913352 B CN110913352 B CN 110913352B CN 201911297071 A CN201911297071 A CN 201911297071A CN 110913352 B CN110913352 B CN 110913352B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- H—ELECTRICITY
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- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
Abstract
The invention provides a PDT system wireless channel resource allocation method and a device, which limit the range of a group call by setting the allocation mode of the group call. The PDT system establishes a group call according to the distribution mode, periodically detects the base stations and the group members participating in the call, and acquires the detection result. The PDT system automatically adds the detection result into the call and updates the call information, and the mobile station of the current call performs handover according to the updated call information. The aim of saving wireless channel resources is achieved by setting different allocation modes, the utilization rate of system channel resources is improved, meanwhile, the complete calling range is ensured, all adjacent base stations of the base station where all group members are currently located are ensured to pre-allocate the wireless channel resources for the group calling automatically in advance, the real-time updating of call information is realized, the mobile station is ensured to use a mode of handover to a participating station when handover occurs, the intelligent adjustment of a call area is realized, and the optimal handover effect is ensured.
Description
Technical Field
The present invention relates to the field of trunking communication, and in particular, to a method and an apparatus for allocating wireless channel resources in a PDT system.
Background
The trunking communication system is a special dispatching mobile communication system sharing radio channel, it adopts multichannel sharing and dynamic channel distribution technology in modern communication, and possesses the dispatching functions of individual calling, group calling and broadcast calling, etc..
PDT (Public/Police Digital Trunking) is a Police Digital Trunking standard which is guided and established by the Public security department and is suitable for the Chinese Public security system. The PDT standard fully considers the situation of China, references international mature standard technologies (such as Tetra, P25, DMR, MPT1327 and the like) and is innovatively designed, and five major principles of high cost performance, safety, confidentiality, large regional system, expandability and backward compatibility are followed.
The PDT standard adopts a large-area system, 12.5KHz channel interval, TDMA double time slots, 4FSK modulation/demodulation, digital voice compression and authentication/encryption technologies. PDT criteria have the following characteristics: smooth transition from analog to digital, high spectrum utilization rate, fast access speed, seamless handover, voice digitization, secure encryption, authentication, support of satellite positioning service, support of IP packet service and the like.
The most common service of the PDT system is a wireless voice group call service, the call range of the group call service is dynamically allocated according to the active range of the group members at the call initiation moment, and the allocation mode not only can ensure the effective call range, but also can save wireless channel resources. The cluster system is always a main guarantee means for police command and dispatch and plays a key role in daily command and dispatch, emergency communication, large-scale activity guarantee and the like. The PDT criteria are therefore clear at the beginning of the establishment: the automatic roaming and handover functions must be supported, and the overall communication effect and user experience of the system are greatly improved.
In a mobile communication system, when a mobile station moves from the coverage of one base station to the coverage of another base station, channel switching performed to keep the communication of the mobile subscriber uninterrupted is called handover.
Handover mainly includes two main types of scenarios: one is a handover to a participating base station and the other is a handover to a non-participating base station.
Existing handoffs are mainly made by: and classifying and performing handover on the handover signal strength threshold according to the channel utilization rate of the base station, and handing over the terminal which is in a non-call state and meets the handover condition to an adjacent base station.
In general, when performing handover, a neighboring base station is not a participating base station of a target communication area, and multiple handovers are required. But in actual handover operations multiple handover actions are required to switch to the participating base stations.
Therefore, how to provide a channel resource allocation method, which can directly perform a handover to a participating base station in a handover process, is an urgent problem to be solved.
Disclosure of Invention
The invention provides a wireless channel resource allocation method and a wireless channel resource allocation device for a PDT system, which are used for solving the problem that a plurality of switching actions are required to switch to a participating base station in a handover operation.
In order to achieve the above object, an embodiment of the present invention provides a PDT system wireless channel resource allocation method, including: setting the distribution mode of the group call, and establishing the group call, wherein the distribution mode is used for limiting the range of the group call. And the PDT system performs periodic detection on the base stations and the group members participating in the call according to the distribution mode to obtain a detection result. The PDT system automatically adds the detection result into the call, meanwhile, the call information of the call is updated according to the detection result, and the mobile station of the current communication carries out handover switching according to the updated call information.
As a preferred embodiment of the foregoing technical solution, preferably, the setting of the group call allocation manner includes: the allocation mode is set to limit a minimum range allocation mode, specifically, dynamic allocation of the fixed base station and the group members. The allocation mode is set to limit a maximum range allocation mode, specifically, dynamic allocation of the fixed base station and the group members. And setting the allocation mode as an unlimited range allocation mode, specifically, dynamically allocating according to the group members.
As a preferable aspect of the foregoing technical solution, after the group call is established, the method further includes: each base station participating in the call broadcasts the call information of the base station adjacent to the base station and also participating in the call periodically.
Preferably, the performing periodic detection on the base station participating in the current call includes: and judging whether the base station has a member to reside. If yes, whether the adjacent site of the base station is in the calling range is searched. If not, the neighboring station is the detection result.
Preferably, as a preferred aspect of the foregoing technical solution, the periodically detecting group members participating in the current call includes: and acquiring the base station information of the base station where the group member is located. And searching whether the adjacent site of the base station where the group member is located is in the calling range. If not, the neighboring station is the detection result.
Preferably, as a preferred aspect of the foregoing technical solution, the updating the call information of the current call according to the detection result includes: the PDT system automatically adds the detection result into the call, and automatically informs the base station related to the call to update the information of the adjacent base station after the call is successful, so as to obtain the updated call information. The PDT system broadcasts the updated call information to the mobile station.
The invention also provides a wireless channel resource allocation device of the PDT system, which can realize the method, and the device comprises: and the resource allocation module is used for setting the allocation mode of the group call and establishing the group call, and the allocation mode is used for limiting the range of the group call. The detection module is used for the PDT system to periodically detect the base station and the group members participating in the call according to the distribution mode set by the resource distribution module to obtain a detection result; after the group call is established, each base station participating in the call periodically broadcasts the call information of the base station adjacent to the base station and also participating in the call. A calling information updating module used for PDT system to add the detection result into the calling automatically and update the calling information of the calling according to the detection result detected by the detection module, the mobile station of the current communication carries out cross-zone switching according to the updated calling information, wherein, the PDT system adds the adjacent station into the calling, the base station related to the calling automatically informs the adjacent base station information to update after the calling is successful, and the PDT system broadcasts the updated calling information to the mobile station after the updated calling information is obtained.
Preferably, the resource allocation module comprises: a limited minimum range allocation module, configured to set an allocation mode as a limited minimum range allocation mode, specifically, dynamic allocation of a fixed base station and group members; a maximum range limiting allocation module, configured to set an allocation mode as a maximum range limiting allocation mode, specifically, dynamically allocate a fixed base station and a group member; and the unlimited range allocation module is used for setting the allocation mode to be an unlimited range allocation mode, and specifically dynamically allocating according to the group members.
As a preferable aspect of the above technical solution, preferably, the detection module includes: and the judging unit is used for judging whether the base station has a member to reside. And the first searching unit is used for searching whether the adjacent station of the base station is in the calling range if the judging unit judges that the receiving station has the member to reside. And the first result acquisition unit is used for acquiring the neighboring station of the base station as a detection result if the first search unit obtains a search result that the neighboring station is not in the current call range.
As a preferable aspect of the above technical solution, preferably, the detection module includes: and the base station acquisition unit is used for acquiring the base station information of the base station where the group member is located. And the second searching unit is used for searching whether the adjacent site of the base station where the group member is located, which is acquired by the base station acquiring unit, is in the current calling range. And the second result acquisition unit is used for determining the adjacent station as a detection result if the second search unit obtains the search result that the adjacent station of the base station is not in the current call range.
The technical scheme of the invention provides a PDT system wireless channel resource allocation method and a device thereof, which limit the range of group calling by setting the allocation mode of group calling. The PDT system establishes a group call according to the distribution mode, periodically detects the base stations and the group members participating in the call, and acquires the detection result. The PDT system automatically adds the detection result into the call, meanwhile, the call information of the call is updated according to the detection result, and the mobile station of the current communication carries out handover switching according to the updated call information.
The invention has the advantages that:
1) the aim of saving wireless channel resources is achieved by setting different allocation modes, and meanwhile, the complete calling range can be ensured, and the utilization efficiency of system channel resources is improved.
2) The cross-region switching method can furthest ensure that the mobile station uses a cross-region switching mode to a participating station when the cross-region switching occurs, realize the quick automatic roaming and the quick cross-region switching of the mobile station and ensure the good call quality in the cross-region switching process.
3) The method does not need to carry out any additional modification and correction on the mobile station in the calling process, can be completely compatible with the existing mobile station, and ensures the compatibility of the whole system.
The method ensures that all the adjacent base stations of the base station where all the group members are currently located automatically pre-allocate wireless channel resources for the group call in advance, realizes real-time updating of call information, ensures that a mobile station uses a handover switching to participating station mode when handover occurs, realizes intelligent adjustment of a call area, ensures optimal handover switching effect, and finally realizes quick automatic roaming and quick handover switching.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flow chart of a method for allocating wireless channel resources of a PDT system according to the present invention.
Fig. 2 is a flowchart illustrating a method for allocating wireless channel resources in a PDT system according to an embodiment of the present invention.
FIG. 3 is a flowchart illustrating step 205 in FIG. 2.
FIG. 4a is a system processing message sequence chart of a PDT system wireless channel resource allocation method of the present invention
Fig. 4b is a system processing message sequence chart of a method for allocating wireless channel resources in a PDT system according to the present invention.
Fig. 5 is a schematic structural diagram of a wireless channel resource allocation device of the PDT system provided by the invention.
Fig. 6 is a schematic structural diagram of the resource allocation module shown in fig. 5.
Fig. 7 is a first schematic structural diagram of the detection module shown in fig. 5.
Fig. 8 is a second schematic structural diagram of the detection module shown in fig. 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiments of the present invention will now be described in detail:
as shown in fig. 1, fig. 1 is a schematic flow chart of a method for allocating wireless channel resources of a PDT system according to the present invention:
The allocation pattern is used to define the range of the group call for the communication channel.
Specifically, the allocation method includes:
define minimum range allocation mode: the fixed base station and the group members are dynamically allocated. The called base station of the group call comprises a part of range of the fixed base station (the number of the base stations is limited), even if no group member in the current call resides in the fixed base station, other base stations except the fixed base station dynamically distribute according to the group member, wherein the group member is each mobile station of the call group in the current call.
Specifically, for example:
the fixed base station includes: a fixed base station I and a fixed base station II; the current call group members include: group member 1, group member 2, group member 3 to group member N (N is a natural number). The fixed base station I and the fixed base station II do not have a group member 1, a group member 2 and a group member 3 to a group member N; the base stations of the group member 1, the group member 2, the group member 3 to the group member N are the "other base stations" described above. In the subsequent steps, the operation is only performed in the fixed base station I, the fixed base station II and the base station where the group member is located.
Define maximum range allocation mode: the fixed base station and the group members are dynamically allocated. Base stations beyond the range of the fixed base station are not included in the calling range even if the group members reside according to the dynamic allocation of the group members in the range of the fixed base station.
Specifically, for example:
the fixed base station includes: a fixed base station I and a fixed base station II; the current call group members include: group member 1, group member 2, group member 3 to group member n (n is a natural number). The fixed base station I and the fixed base station II comprise a group member 1, a group member 2 and a group member 3 to one or more group members n, but the fixed base station I and the fixed base station II do not necessarily reside in all the group members, and some group members may reside in the fixed base station III, but the fixed base station III exceeds the range of the fixed base station, and the group members residing in the range of the fixed base station III are not in the calling range. The subsequent steps are only performed between the fixed base station I, the fixed base station II and the group members residing in the fixed base station I and the fixed base station II.
Unlimited range allocation mode: dynamically assigned by group member. In the call, the base stations where all the group members reside are within the call range.
Specifically, for example, the current call group members include: group member 1, group member 2, group member 3 to group member n (n is a natural number). If the group member 1, the group member 2, the group member 3 to the group member n belong to different base stations respectively, and the base stations are within the calling range. Subsequent steps are performed between these base stations.
Step 102, each base station participating in the current call periodically broadcasts the call information of the base station adjacent to the base station and also participating in the current call.
And 103, the PDT system periodically detects the base stations and the group members participating in the call according to the distribution mode to obtain a detection result. Specifically, the base stations participating in the call are periodically detected.
The method comprises the following steps: judging whether the base station has a member to reside; if yes, searching whether the adjacent site of the base station is in the calling range; if not, the neighboring station is the detection result.
Specifically, periodic detection is performed on the group members participating in the call.
And acquiring the base station information of the base station where the group member is located. Searching whether the neighboring station of the base station where the group member is located is in the calling range; if not, the neighboring station is the detection result.
The detection result also comprises the base stations participating in the call when the call starts.
And step 104, the PDT system automatically adds the detection result into the call, and updates the call information of the call according to the detection result.
The method comprises the following steps: the PDT system automatically adds the detection result into the call, simultaneously adds the adjacent station into the adjacent base station of the call to obtain the updated call information, and broadcasts the updated call information to the mobile station.
And 105, the mobile station in the current call carries out handover according to the updated call information.
The technical solution of the present invention will be further described with reference to an embodiment, which is described with a specific embodiment, and in this embodiment, a distribution mode for limiting a minimum range is set as an example, as shown in fig. 2:
The distribution mode is set through a PDT network management system.
Specifically, the mobile station informs the PDT system of the waiting group number information. After the mobile station registers in the PDT system and accesses the network, the PDT system needs to inform the PDT system of the current waiting group number information of the mobile station, and the PDT system records the current waiting group number information of each mobile station number and updates the current waiting group number information in real time.
The base station comprises a base station 1, a base station 2 and a base station 3, wherein the group members comprise a group member a (base station 1), a group member b (base station 1), a group member c (base station 2), a group member d (base station 4) and a group member e (base station 4).
Specifically, after the group call is established, the system must periodically broadcast the call information of the base stations adjacent to each base station and participating in the call, so as to ensure that the mobile stations participating in the call can receive the information, record the call information of the base stations adjacent to the base station, and prepare for subsequent handover.
The method specifically comprises the following steps: after the PDT system successfully calls a certain adjacent base station actively, the call information of the adjacent base station of the relevant base station must be updated so as to ensure that a mobile station in the relevant base station can use a mode of handover to a participating station when the mobile station is handed over to the adjacent base station, thereby ensuring the fastest and optimal handover effect.
Wherein the specific flow of step 205 is shown in fig. 3:
to illustrate step 205, according to the base station and group members included in the group call in step 202, there are:
step 301, the PDT system periodically detects all base stations and group members participating in the call.
The method specifically comprises the following steps: the PDT system periodically detects base station 1, base station 2, base station 3, and group member a to group member e.
And respectively judging whether members reside in the base station 1, the base station 2 and the base station 3, if no member resides in a certain base station, finishing the detection of the base station, and if no member resides in the base station 3, finishing the detection of the base station 3.
Step 303, searching whether the neighboring station of the base station is within the current calling range, if not, executing step 304, and if so, ending the search.
And searching the adjacent sites of the base station 1 and the base station 2, judging whether the adjacent sites are in the current calling range, and enabling the PDT system to participate in the current call by the adjacent sites of the base station 1 and the base station 2 in the current calling range to become the adjacent base stations.
And step 304, obtaining a detection result.
And 305, acquiring the base station information of the base station where the group member of the call is located.
And acquiring the base station information of a group member a (base station 1), a group member b (base station 1), a group member c (base station 2), a group member d (base station 4) and a group member e (base station 4).
Respectively searching whether the adjacent sites of the base station 1, the base station 2 and the base station 4 are in the calling range, if not, adding the adjacent sites of the base station 1, the base station 2 and the base station 4 into the call by the PDT system to become the adjacent base stations.
Wherein step 302 and step 305 are performed simultaneously.
The steps are as follows: the technical scheme that when the current base station has member residence but the adjacent base station of the base station is not in the range of the call, the system automatically initiates a call to the adjacent base station, participates in the call, and simultaneously updates the call information of the adjacent base station of the base station is met.
In step 206, the mobile station performs handover based on the updated call information.
When the mobile station participating in the conversation is switched over the area, the mode of switching over the area to the participating station is used, and the optimal effect of switching over the area is ensured. Wherein the participating stations include updated neighboring stations.
Specifically, the technical solution of the present invention is further explained by using a specific embodiment, for example, fig. 4a is a first message sequence chart processed by the system of the present invention, fig. 4b is a second message sequence chart processed by the system of the present invention, as shown in fig. 4a and fig. 4 b: the method for PDT system wireless channel resource allocation in the embodiment is realized on the basis that: 1) the PDT system first supports group calls and supports a mode set to "dynamic allocation per group member" (unrestricted range allocation mode); 2) the mobile terminal supports handover.
Mobile station MS1 and MS2 are members of group call 1, MS1 resides at BS1, MS2 resides at BS2, and no group call 1 member resides in BS 3.
S1: MS1 initiates the call for group call 1 at BS 1.
S2: the BS1 replies to the MS1 call success response and MS1 enters the talk state.
S3: BS1 initiates a call for group call 1 to the switching control center.
S4: the switching control center replies to the success of the BS1 call and establishes a cross base station call task.
S5: the switching control center initiates the call of group call 1 to called BS 2.
S6: the BS2 receives the group 1 call of the switching control center and allocates a traffic channel, informing the MS2 to enter a talk state.
S7: BS2 replies with a response that the call of the switching control center was successful.
S8: the MS2 begins talking at BS 2.
S9: the BS2 forwards the received voice data of the MS2 to a soft switch module of a switching control center.
S10: the soft switch module of the switching control center forwards the received voice data of BS2 to BS 1.
S11: the BS2 forwards the received voice data of MS2 directly to BS 1.
S12: the BS1 forwards the received voice data to the MS 1.
S13: the switching control center scans the timer.
The BS3 is the neighboring base station of BS2, which is found according to the above method, and the MSC (Mobile Switching Center) performs the following steps according to the search result.
S14: the switching control center initiates a call for voice group call 1 to called BS 3.
Wherein BS3 is a neighbor base station to BS2 and the MSC actively calls BS 3.
S15: BS3 replies with a response that the call of the switching control center was successful.
S16: after the MS2 hands off to BS3, it starts speaking.
S17: the BS3 forwards the received voice data of the MS2 to a soft switch module of a switching control center.
S18: the soft switch module of the switching control center forwards the received voice data of BS3 to BS 1.
S19: the soft switch module of the switching control center forwards the received voice data of BS3 to BS 2.
S20: the BS3 forwards the received voice data of MS2 directly to BS 1.
S21: the BS3 forwards the received voice data of MS2 directly to BS 2.
S22: the BS1 forwards the received voice data to the MS 1.
Fig. 5 is a schematic structural diagram of a wireless channel resource allocation device of a PDT system provided by the invention, as shown in fig. 5:
the resource allocation module 501 is used to set the allocation mode of the group call, and the allocation mode is used to limit the range of the group call.
The detection module 502 is used for establishing a group call, and is also used for the PDT system to periodically detect the base stations and the group members participating in the call according to the allocation mode set by the resource allocation module 501, so as to obtain a detection result; after the group call is established, the method also comprises the step of periodically broadcasting the call information of the adjacent base station of each base station participating in the call.
A call information updating module 503, configured to add the detection result detected by the detection module 502 to the current call, update the call information of the current call according to the detection result detected by the detection module 502, and perform handoff of the mobile station currently in communication according to the updated call information, where the PDT system adds a neighboring station to a neighboring base station of the current call to obtain updated call information, and then the PDT system broadcasts the updated call information to the mobile station.
As shown in fig. 6, the resource allocation module 501 includes:
a limited minimum range allocation module 601, configured to implement setting an allocation manner as a limited minimum range allocation mode, specifically, dynamic allocation of a fixed base station and group members.
A limited maximum range allocation module 602, configured to implement setting an allocation manner as a limited maximum range allocation mode, specifically, dynamic allocation between a fixed base station and a group member.
An unlimited range allocation module 603, configured to implement setting an allocation mode as an unlimited range allocation mode, specifically, dynamically allocating according to group members.
As shown in fig. 7, the detecting module 502 includes:
a determining unit 701, configured to determine whether a member resides in a base station.
A first searching unit 702, configured to search whether a neighboring station of the base station is within the current call range if the determining unit 701 determines that the base station has a member residing therein.
A first result obtaining unit 703 is configured to obtain a neighboring station as a detection result if the first searching unit 702 obtains a searching result of the neighboring station of the base station within the current call range.
As shown in fig. 8, the detecting module 502 further includes:
a base station obtaining unit 801, configured to obtain base station information of a base station where a group member is located.
The second searching unit 802 is configured to search whether a neighboring station of the base station where the group member is located, which is acquired by the base station acquiring unit 801, is within the current call range.
A second result obtaining unit 803, configured to, if the second searching unit 802 obtains a searching result of a neighboring station of the base station within the current call range, determine that the neighboring station is a detection result.
The technical scheme of the invention provides a PDT system wireless channel resource allocation method and a device thereof, which limit the range of group calling by setting the allocation mode of group calling. The PDT system establishes a group call according to the distribution mode, periodically detects the base stations and the group members participating in the call, and acquires the detection result. The PDT system automatically adds the detection result into the call, meanwhile, the call information of the call is updated according to the detection result, and the mobile station of the current communication carries out handover switching according to the updated call information.
The invention has the advantages that:
1) the aim of saving wireless channel resources is achieved by setting different allocation modes, and meanwhile, the complete calling range can be ensured, and the utilization efficiency of system channel resources is improved.
2) The cross-region switching method can furthest ensure that the mobile station uses a cross-region switching mode to a participating station when the cross-region switching occurs, realize the quick automatic roaming and the quick cross-region switching of the mobile station and ensure the good call quality in the cross-region switching process.
3) The method does not need to carry out any additional modification and correction on the mobile station in the calling process, can be completely compatible with the existing mobile station, and ensures the compatibility of the whole system.
The method ensures that all the adjacent base stations of the base station where all the group members are currently located automatically pre-allocate wireless channel resources for the group call in advance, realizes real-time updating of call information, ensures that a mobile station uses a handover switching to participating station mode when handover occurs, realizes intelligent adjustment of a call area, ensures optimal handover switching effect, and finally realizes quick automatic roaming and quick handover switching.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A PDT system wireless channel resource allocation method, the method comprising:
setting a distribution mode of the group call, establishing the group call, wherein the distribution mode is used for limiting the range of the group call, and comprises the following steps of setting the distribution mode as a limited minimum range distribution mode, specifically, dynamically distributing a fixed base station and group members: the called base station of the group call comprises a part of fixed base stations with limited number, even if no group member in the current call resides in the fixed base station, other base stations except the fixed base stations with limited number are dynamically distributed according to the group member, wherein the group member is each mobile station of the call group in the current call; setting the allocation mode as a limited maximum range allocation mode, specifically, dynamically allocating the fixed base station and the group members: dynamically distributing the base stations which are beyond the range of the fixed base station according to the group members in the range of the fixed base station, and even if the group members reside, the base stations are not included in the calling range; setting the allocation mode as an unlimited range allocation mode, specifically, dynamically allocating according to group members: in the calling, the base stations where all the group members reside are within the calling range;
the PDT system carries out periodic detection on the base station and the group members participating in the call according to the distribution mode, and judges whether the base station has the group members to reside; if yes, searching whether the adjacent site of the base station is in the current calling range; if not, the adjacent station is a detection result;
or the like, or, alternatively,
acquiring base station information of a base station where the group member is located; searching whether the neighboring station of the base station where the group member is located is in the calling range; if not, the adjacent station is a detection result;
and the PDT system automatically adds the detection result into the call and updates the call information of the call according to the detection result.
2. The PDT system wireless channel resource allocation method of claim 1, further comprising, after said establishing a group call: each base station participating in the call broadcasts the call information of the base station adjacent to the base station and also participating in the call periodically.
3. The method as claimed in claim 2, wherein said PDT system automatically adding the detection result to the present call and updating the call information of the present call based on said detection result comprises:
the PDT system automatically adds the adjacent station into the call, and automatically informs a base station related to the call to update the information of the adjacent base station after the call is successful, so as to obtain updated call information;
and the PDT system broadcasts the updated calling information to the mobile station currently in communication.
4. A PDT system wireless channel resource allocation apparatus, capable of implementing the method as claimed in any one of claims 1 to 3, said apparatus comprising:
the resource allocation module is used for setting the allocation mode of the group call and establishing the group call, wherein the allocation mode is used for limiting the range of the group call;
the detection module is used for the PDT system to periodically detect the base station and the group members participating in the call according to the distribution mode set by the resource distribution module to obtain a detection result; after the group call is established, each base station participating in the call periodically broadcasts the call information of the base station adjacent to the base station and also participating in the call; specifically, the detection module comprises a judgment unit, a first search unit and a first acquisition unit, or comprises a base station acquisition unit, a second search unit and a second acquisition unit:
the judging unit is used for judging whether the base station has a member to reside;
the first searching unit is used for searching whether the adjacent site of the base station is in the current calling range or not if the judging unit judges that the member resides in the base station;
a first result obtaining unit, configured to obtain a detection result of a neighboring station of the base station if the first searching unit obtains a searching result that the neighboring station is not within the current call range;
a base station obtaining unit, configured to obtain base station information of a base station where the group member is located;
a second searching unit, configured to search whether a neighboring station of the base station where the group member is located, acquired by the base station acquiring unit, is within the current call range;
a second result obtaining unit, configured to obtain, if the second searching unit obtains a search result that a neighboring station of the base station is not within the current call range, the neighboring station is a detection result;
a calling information updating module used for the PDT system to automatically add the detection result into the current call, and update the calling information of the current call according to the detection result detected by the detection module, and the mobile station of the current communication performs handover switching according to the updated calling information, wherein, the PDT system adds the adjacent station into the current call, and automatically informs the base station related to the current call to update the adjacent base station information after the call is successful, so as to obtain the updated calling information, and then, the PDT system broadcasts the updated calling information to the mobile station; and the adjacent site is the adjacent site of the base station where the group member is located.
5. The PDT system wireless channel resource allocation device of claim 4, wherein said resource allocation module comprises:
a minimum range limit allocation module, configured to set the allocation mode as a minimum range limit allocation mode, specifically, dynamically allocate a fixed base station and a group member: the called base station of the group call comprises a part of fixed base stations with limited number, even if no group member in the current call resides in the fixed base station, other base stations except the fixed base stations with limited number are dynamically distributed according to the group member, wherein the group member is each mobile station of the call group in the current call;
a maximum range limit allocation module, configured to set the allocation mode as a maximum range limit allocation mode, specifically, dynamically allocate a fixed base station and a group member: dynamically distributing the base stations which are beyond the range of the fixed base station according to the group members in the range of the fixed base station, and even if the group members reside, the base stations are not included in the calling range;
an unlimited range allocation module, configured to set the allocation mode as an unlimited range allocation mode, specifically, dynamically allocate according to group members: in the call, the base stations where all the group members reside are within the call range.
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