CN112383930B - Method for distributing same-frequency simulcasting carrier - Google Patents
Method for distributing same-frequency simulcasting carrier Download PDFInfo
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- CN112383930B CN112383930B CN202011257540.XA CN202011257540A CN112383930B CN 112383930 B CN112383930 B CN 112383930B CN 202011257540 A CN202011257540 A CN 202011257540A CN 112383930 B CN112383930 B CN 112383930B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
Abstract
The invention relates to a method for distributing co-frequency simulcast carrier waves.A simulcast base station stores a carrier frequency point information table issued by a central station to the local and then waits for a first BSR registration message; after receiving the first BSR registration message, the simulcast base station starts a timer for waiting for other BSR registrations and records the registered BSR state; when the timer is overtime, the carrier wave is allocated for the first time until the frequency point of the central station or the actual carrier wave is allocated; then the simulcast base station registers to the central station, and the allocated frequency point can work normally; after the first distribution is completed, the simulcast base station enters a secondary distribution process after receiving a new BSR registration message; and after the distribution is finished, the simulcast base station registers to the central base station again, and then the newly distributed carrier frequency point can work normally. The invention combines the carriers of a plurality of BSRs of the simulcast base station into the logic BSR, and then flexibly distributes the carrier resources of the actual BSR, thereby effectively saving the cost of the simulcast base station and avoiding the waste of the carrier resources of the simulcast base station.
Description
Technical Field
The invention relates to a method for distributing co-frequency simulcast carriers.
Background
The same frequency broadcasting system is a professional wireless communication system for realizing the remote and blind area-free coverage of the interphone. The method solves the problem of interconnection and intercommunication in cross-regional dispatching and commanding in the simplest mode, and is suitable for users with small telephone traffic and large range of activity, such as expressways, fire control, frontier defense and the like. The same frequency is used by all base stations in a trunking network, and a base station with the best uplink signal is selected as a master base station, and other base stations are used as slave base stations to forward signals of the master base station. Generally speaking, the common-frequency simulcasting system can be divided into digital common-frequency simulcasting and analog common-frequency simulcasting, and can also be divided into cluster common-frequency simulcasting and conventional common-frequency simulcasting. The central base station realizes the functions of centralized management of the base stations, synchronization of carrier resource states, control of data streams carrying uplink, broadcast transmission of downlink carrying data, configuration management of resources and the like. The simulcast base station performs carrier-related control including processing by the receiver/transmitter. The indoor simulcast Base Station is composed of a Base Station Controller (BSC) and one or more channel machines (BSR). The BSR can be divided into a single carrier channel machine and a multi-carrier (1-4 carriers can be allocated, and at most 4 carriers) channel machine. The outdoor simulcast base station consists of one BSC and one multi-carrier BSR. The central base station needs to perform unified management on each simulcast base station, and the carrier number and each carrier frequency point of the simulcast base station need to be consistent with the configuration value of the central station.
In practical application, the client needs to use the outdoor simulcast base station and the indoor simulcast base station simultaneously. The outdoor simulcast base station is a multi-carrier BSR, if only one carrier is configured, waste of other carriers of the outdoor simulcast base station is caused, and the outdoor simulcast base station is configured into multi-carriers, the indoor simulcast base station is required to use the multi-carrier BSR, but the multi-carrier BSR in the indoor simulcast base station is much higher than the single-carrier BSR.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a technical scheme of a same-frequency simulcast carrier allocation method.
The method for distributing the same-frequency simulcasting carriers is characterized by comprising the following steps:
s1, the simulcast base station stores the carrier frequency point information table sent by the central station to the local, and then waits for the first BSR registration message;
s2, after receiving the first BSR registration message, the simulcast base station starts a timer for waiting for other BSR registration and records the registered BSR state;
s3, when the timer is overtime, the carrier is distributed for the first time, the carrier frequency points stored in the central station are sequentially distributed to the physical carriers and preferentially distributed to the single carrier BSR, and after the single carrier BSR is exhausted, the carrier frequency points are uniformly distributed to the multi-carrier BSR until the central station frequency points or the actual carriers are distributed; then the simulcast base station registers to the central station, and the allocated frequency point can work normally;
s4, after the first distribution is completed, the simulcast base station enters a secondary distribution process after receiving the new BSR registration message, and distributes the residual frequency points of the central base station to the carrier waves of the new BSR in sequence; after the distribution is finished, the simulcast base station registers to the central base station again, and then the newly distributed carrier frequency point can work normally.
The carrier allocation method for the same-frequency simulcasting is characterized in that: step S1 further includes:
s1-1, after the simulcast base station is powered on and establishes network connection with the central station, the central station sends all BSR carrier frequency point information in the configuration table to the simulcast base station which is currently connected, and the simulcast base station stores the BSR carrier frequency point information in a local memory, which is called as a logic BSR carrier frequency point information table.
The carrier allocation method for the same-frequency simulcasting is characterized in that: step S2 further includes:
s2-1, when the self-checking of the first BSR of the simulcast base station is finished, the registration is initiated to the simulcast base station, after the simulcast base station receives the self-checking, a timer is started to wait for the registration of other BSRs, and the flag representing whether the first BSR is a FALSE or not is set, and the timer is not established when the subsequent other BSRs register, but whether to enter the re-distribution process or not is determined according to whether the first distribution flag is finished or not.
The carrier allocation method for the same-frequency simulcasting is characterized in that: the first carrier allocation method in step S3 is as follows:
firstly, respectively calculating the number of single carrier BSR and multi-carrier BSR according to the type of the BSR which is subjected to self-checking, and recording the ID of the corresponding BSR;
respectively calculating the number of carriers configured by the central station and the number of carriers available to the simulcast base station, and if the number of carriers configured by the central station is greater than the number of carriers available to the simulcast base station, sending an alarm;
acquiring unallocated carrier frequency point information from a logic BSR carrier frequency point information table in sequence, and allocating the unallocated carrier frequency point information to a single carrier BSR first until the central station frequency point is allocated completely;
if the remaining carrier frequency points in the logical BSR carrier frequency point information table are not distributed and the single carrier BSR is distributed, starting to distribute the carrier frequency points of the central station to the multi-carrier BSR until one party is distributed;
if the number of the carrier waves of the simulcast base station is more than that of the carrier waves configured by the central station, the simulcast base station can automatically close the extra carrier waves.
The co-frequency simulcast carrier allocation method combines the carriers of a plurality of BSRs of the simulcast base station into a logic BSR according to the configuration of the central base station, and then flexibly allocates the carrier resources of the actual BSR, thereby effectively saving the cost of the simulcast base station and avoiding the waste of the carrier resources of the simulcast base station.
For example, a customer only purchases two frequency points, when the outdoor simulcast base station is used, the outdoor simulcast base station needs to be configured into 2 carriers, and the indoor simulcast base station can only use two single carrier BSRs by the method, but not use one multi-carrier BSR to configure into 2 carriers; this saves the cost of two carriers.
Drawings
Fig. 1 is a flow chart of a PDT cluster simulcast carrier allocation method;
fig. 2 is a diagram of an implementation effect of a PDT cluster simulcast carrier allocation method;
fig. 3 is a complex scene effect diagram of a PDT cluster simulcast carrier allocation method.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, which are included to provide further understanding to those skilled in the art, and are intended to be illustrative and not limiting of the scope of the invention.
The same-frequency simulcasting system can be provided with a plurality of simulcasting base stations, and both the outdoor base station and the indoor base station can be used as the simulcasting base stations. The indoor simulcast base station is composed of a plurality of BSRs, and the BSRs have single carrier types and multi-carrier types. The outdoor simulcast base station is equivalent to an indoor simulcast base station with only one multi-carrier BSR in use.
After the simulcast base station establishes a link with the central station, the central station issues the configured carrier and frequency points to the simulcast base station, and the simulcast base station stores the message content to the local; BSR carrier frequency point information sent by the central station is stored locally, which is called a simulcast base station logic BSR carrier frequency point information table, and a local actual carrier frequency point information table of the simulcast base station corresponds to the same.
When the power-on self-test of the first BSR is finished, initiating registration to the BSC, and after the BSC receives the registration message, recording the ID of the BSR by the BSC, and starting a timer, wherein the overtime time of the timer can be configured; the timer is used for waiting for the completion of self-checking of other BSRs of the simulcast base station, and the first carrier allocation is carried out after the timer is overtime.
Before the timer is overtime, the self-checking of other BSR is completed successively, at this moment, the first carrier allocation is not completed, and only the BSR state for initiating registration is recorded.
When the timer is overtime, the first carrier allocation is carried out according to the logic BSR carrier frequency point information table, and the allocation method comprises the following steps:
firstly, respectively calculating the number of single carrier BSR and multi-carrier BSR according to the type of the BSR which is subjected to self-checking, and recording the ID of the corresponding BSR;
respectively calculating the number of carriers configured by the central station and the number of carriers available to the simulcast base station, and if the number of carriers configured by the central station is greater than the number of carriers available to the simulcast base station, sending an alarm;
acquiring unallocated carrier frequency point information from a logic BSR carrier frequency point information table in sequence, and allocating the unallocated carrier frequency point information to a single carrier BSR first until the central station frequency point is allocated completely;
if the remaining carrier frequency points in the logical BSR carrier frequency point information table are not distributed and the single carrier BSR is distributed, starting to distribute the carrier frequency points of the central station to the multi-carrier BSR until one party is distributed;
if the number of the carrier waves of the simulcast base station is more than that of the carrier waves configured by the central station, the simulcast base station can automatically close the extra carrier waves.
And after the primary allocation of the carrier frequency points is finished, setting a master control channel.
The main control channel is arranged on the main control BSR, the main control BSR is set when being configured by the central station, and the main control channel is regulated on the first carrier wave of the BSR; the central station sends a mark whether the main control is carried in the carrier frequency point information to the simulcast base station, and according to the principle that the main control channel needs to be on the first carrier, if the main control channel is not on the first carrier of the actual BSR in the carrier frequency point distribution process, the main control channel needs to be exchanged with the first carrier of the current BSR.
If a certain BSR starts self-checking and finishes slowly, and the first allocation opportunity passes at the moment, the flow enters a secondary allocation flow; when the re-allocation is carried out, if the carrier frequency point of the central station is not allocated completely in the first allocation, the simulcast base station can continuously acquire the unallocated carrier frequency point information from the logical BSR carrier frequency point information table in sequence and allocate the unallocated carrier frequency point information to the newly registered BSR. At this time, the BSR is not distinguished to be a single carrier and a multi-carrier; if the carrier wave of the central station is distributed, the simulcast base station automatically closes the rest carrier waves.
The first carrier frequency point distribution is completed, and the simulcast base station sets all frequency points to corresponding carriers according to the distribution relation; updating the states of all logic BSRs, and initiating registration to the central station in the form of the logic BSRs; thereafter, the states of all logical BSRs are synchronized to the standby BSC.
When the carrier frequency points are distributed again, the simulcast base station can set all the frequency points on the corresponding carriers, and the set carriers can be automatically skipped over and cannot be repeatedly set; and then updating the states of all the logic BSRs, registering the logic BSRs with the central station, and synchronizing the states of all the logic BSRs to the standby BSC.
After the central station modifies the frequency point, the simulcast base station receives the new carrier frequency point information, and compares the new carrier frequency point information with the locally stored information, if the two pieces of information are different, the simulcast base station clears all the information distributed before, and then performs 'first' distribution again.
Then the simulcast base station sets all frequency points on corresponding carriers according to the distribution relation, updates the states of all logic BSR and initiates registration to the central station in the form of logic BSR; thereafter, the states of all logical BSRs are synchronized to the standby BSC.
Examples
As shown in fig. 1, the PDT cluster simulcast carrier allocation method provided in this embodiment includes the following steps:
s1, the simulcast base station stores the carrier frequency point information table sent by the central station to the local, and then waits for the first BSR registration message. As shown in fig. 2, the left frame in the figure is a carrier frequency point information table of the central base station. In the example, the central base station configures 2 BSRs, and each of the 2 BSRs is configured with 4 carriers. The total carrier number of the central base station is 8.
S2, when self-checking of the first BSR of the simulcast base station is finished, registration is initiated to the simulcast base station, after the simulcast base station receives the self-checking, a timer is started to wait for registration of other BSRs, and the flag representing whether the first BSR is a FALSE or not is set, and the timer is not established when subsequent other BSRs register, but whether to enter a re-distribution process is determined according to whether the first distribution flag is finished or not.
S3, when the timer is overtime, the carrier is distributed for the first time, the carrier frequency points stored in the central station are sequentially distributed to the physical carriers and preferentially distributed to the single carrier BSR, and after the single carrier BSR is exhausted, the carrier frequency points are uniformly distributed to the multi-carrier BSR until the central station frequency points or the actual carriers are distributed; then the simulcast base station registers with the central station and starts working. As shown in fig. 2, the right frame in the figure is the physical carrier allocation table of the simulcast base station. In an example, a simulcast base station has 5 BSRs, where 2 single carrier BSRs and 3 multi-carrier BSRs are configured as 2 carriers; when first distribution is carried out, the BSR5 is not electrified, the number of actually available physical carriers is 6, the carrier distribution relation is shown in figure 2, and frequency points of numbers I to VI in a frequency point message table of the central base station are distributed on the registered BSR physical carriers as indicated by arrow directions; at the moment, the first distribution is completed, the simulcast base station registers to the central base station, and the distributed frequency point can work normally.
And S4, after the first allocation is completed, the BSR5 is powered on, the BSR5 self-check is completed and then registration is initiated to the simulcast base station, the simulcast base station enters a re-allocation flow after receiving the BSR5 registration message, and the residual frequency points of the central base station are allocated to the carrier waves 1 and 2 of the BSR5 in sequence. After the distribution is finished, the simulcast base station registers to the central base station again, and then, under the coverage range of the simulcast base station, all the frequency points configured by the central base station can work normally.
As shown in fig. 3, when first allocating, the number of actually available physical carriers is greater than the number of carriers configured by the central base station. And when the allocation is carried out, the frequency points are sequentially taken out from the carrier frequency point information table of the central base station and are preferentially allocated to the single carrier BSR, and after the single carrier BSR is exhausted, the frequency points are uniformly allocated to the multi-carrier BSR. The assignment is represented by the arrow pointing in the figure. When all the frequency points of the central base station are distributed, the actually available carriers are remained, and the method can close the remained carriers.
The method for allocating the co-frequency simulcast carriers provided by the embodiment can be applied to a PDT cluster simulcast carrier allocation scheme, and according to the configuration of the central base station, carriers of a plurality of BSRs of the simulcast base station are recombined into a logic BSR, and then carrier resources of an actual BSR are flexibly allocated, so that the cost of the simulcast base station is effectively saved, and the waste of the carrier resources of the simulcast base station is avoided.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (4)
1. The method for distributing the same-frequency simulcast carriers is characterized by comprising the following steps:
s1, the simulcast base station stores the carrier frequency point information table sent by the central station to the local, and then waits for the first channel machine BSR registration message;
s2, after receiving the first BSR registration message, the simulcast base station starts a timer for waiting for other BSR registration and records the registered BSR state;
s3, when the timer is overtime, the carrier is distributed for the first time, the carrier frequency points stored in the central station are sequentially distributed to the physical carriers and preferentially distributed to the single carrier BSR, and after the single carrier BSR is exhausted, the carrier frequency points are uniformly distributed to the multi-carrier BSR until the central station frequency points or the actual carriers are distributed; then the simulcast base station registers to the central station, and the allocated frequency point can work normally;
s4, after the first distribution is completed, the simulcast base station enters a secondary distribution process after receiving the new BSR registration message, and distributes the residual frequency points of the central base station to the carrier waves of the new BSR in sequence; after the distribution is finished, the simulcast base station registers to the central base station again, and then the newly distributed carrier frequency point can work normally.
2. The same-frequency simulcast carrier allocation method according to claim 1, characterized in that: step S1 further includes:
s1-1, after the simulcast base station is powered on and establishes network connection with the central station, the central station sends all BSR carrier frequency point information in the configuration table to the simulcast base station which is currently connected, and the simulcast base station stores the BSR carrier frequency point information in a local memory, which is called as a logic BSR carrier frequency point information table.
3. The same-frequency simulcast carrier allocation method according to claim 1, characterized in that: step S2 further includes:
s2-1, when the self-checking of the first BSR of the simulcast base station is finished, the registration is initiated to the simulcast base station, after the simulcast base station receives the self-checking, a timer is started for waiting for the registration of other BSRs, and the position of the mark representing whether the first BSR is FALSE, the timer is not established when the subsequent other BSRs register, but whether to enter the redistribution process is determined according to whether the first distribution mark is finished.
4. The same-frequency simulcast carrier allocation method according to claim 1, characterized in that: the first carrier allocation method in step S3 is as follows:
firstly, respectively calculating the number of single carrier BSR and multi-carrier BSR according to the type of the BSR which is subjected to self-checking, and recording the ID of the corresponding BSR;
respectively calculating the number of carriers configured by the central station and the number of carriers available to the simulcast base station, and if the number of carriers configured by the central station is greater than the number of carriers available to the simulcast base station, sending an alarm;
acquiring unallocated carrier frequency point information from a logic BSR carrier frequency point information table in sequence, and allocating the unallocated carrier frequency point information to a single carrier BSR first until the central station frequency point is allocated completely;
if the remaining carrier frequency points in the logical BSR carrier frequency point information table are not distributed and the single carrier BSR is distributed, starting to distribute the carrier frequency points of the central station to the multi-carrier BSR until one party is distributed;
if the number of the carrier waves of the simulcast base station is more than that of the carrier waves configured by the central station, the simulcast base station can automatically close the extra carrier waves.
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