CN106572541B - Multi-service satellite wireless resource regulating method and system based on bidirectional alternate scanning - Google Patents
Multi-service satellite wireless resource regulating method and system based on bidirectional alternate scanning Download PDFInfo
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Abstract
The invention discloses a multi-service satellite wireless resource regulating method based on bidirectional alternate scanning, which comprises the following steps: 1) initializing a plurality of global variables; 2) calling a resource scanning subprocess to be regulated to obtain a resource position p to be regulatedo(ii) a 3) Calling a new adjustment position scanning sub-process of the resource to be regulated to obtain an adjustment position p of the resource to be regulated which is not allocated for used(ii) a 4) Judging whether the stopping condition of the wireless resource regulating process is satisfied, if so, ending the wireless resource regulating process; if the condition is not satisfied, p is addedoAdjusting the resource to be regulated of a position to an unallocated resource adjusting position pdAnd skipping to the step 2) to continue executing the subsequent resource regulating process. The unallocated wireless resources are distributed continuously as much as possible, and the allocation processing pressure of the communication request processing module is reduced; the dynamic adjustment of the share of different types of wireless resources is realized, the utilization efficiency of the wireless resources of the satellite communication system is improved, and the maximum capacity utilization is achieved.
Description
Technical Field
The invention belongs to the technical field of communication, and relates to a method and a system for regulating wireless resources in a novel multi-service mixed exchange type satellite communication system.
Background
The development trend of a satellite communication system in the future is to gradually merge and unify narrow-band and wide-band systems, and a hybrid switching-based satellite communication system gradually appears. Such a system can not only carry CS domain services such as Low Data Rate (LDR), Medium Data Rate (MDR), High Data Rate (HDR), etc., but also PS domain packet services. However, the amount of traffic varies from one satellite traffic service to another during different time periods, which also means that the amount of radio resources required varies from one satellite traffic service to another and from time to time. Therefore, in the present stage, the problem of dynamic allocation and adjustment of radio resources of satellite transmission services of different domains, different types and different bandwidths becomes a critical issue for the hybrid switching type satellite communication system.
The radio resources allocated in a continuous distribution but in a discrete manner, such as frame time slots, frequencies, etc., will appear in a state where the allocated resources are scattered after a period of system operation, i.e., the allocated resources will be scattered at various positions of the radio resources of that type. It is almost impossible to adjust the share and proportion of different types of radio resources in this state. The main current solution is to maintain the current situation unchanged, or reset the system again, and reconfigure the share and the proportional relationship of the divided resources according to the actual requirement. Therefore, these methods cannot meet the requirement of dynamic adjustment of radio resources for different transmission services.
Disclosure of Invention
The invention aims to overcome the defects of the background technology, and provides a satellite wireless resource regulating method based on bidirectional alternate scanning, which is used for respectively gathering allocated and unallocated wireless resources so that the unallocated wireless resources can be converted into other types of wireless resources to realize the dynamic regulation function of multi-service satellite wireless resources, and the method is specifically realized by the following scheme:
the method for regulating the wireless resources of the multi-service satellite based on the bidirectional alternate scanning comprises the following steps:
1) several global variables are initialized: setting the number n of time slots of the current service type; resource to be regulated scanning count ir0; resource adjustment position scan count ip＝0；
2) Calling a resource scanning subprocess to be regulated to obtain a resource position p to be regulated returned by the subprocesso；
3) Calling a new adjustment position of the resource to be regulated to scan the sub-process, and obtaining an adjustment position p of the resource to be regulated, which is returned by the sub-process and is not allocated for used；
4) Judging whether a wireless resource regulating process stopping condition is satisfied, wherein the wireless resource regulating process stopping condition is as follows: (p)o<n/2&&pd<n/2&&po<pd)||(po>n/2&&pd>n/2&&po>pd)||(po>n/2&&pd<n/2&&po>(n-pd))||(po<n/2&&pd>n/2&&po<(n-pd) If the condition is satisfied, the radio resource regulating process is ended; if the condition is not satisfied, p is addedoAdjusting the resource to be regulated of a position to an unallocated resource adjusting position pdAnd jump to stepAnd 2) continuing to execute the subsequent resource regulating flow.
The method for regulating wireless resources of a multi-service satellite based on bidirectional alternate scanning is further designed in that the sub-process of scanning the resources to be regulated in the step 3) comprises the following steps:
3-1) judgment of Condition irWhether it is an even number: if irIf it is an even number, let temporary variable t ═ i r2; if irIf not, let the temporary variable t be n- (i)r+ 1)/2; and execute ir＝ir+1；
3-2) detecting whether the resource at the t position is allocated: if the resource is distributed, outputting a position t of the resource to be regulated, and returning to the main regulating process after leaving the sub-process; and if not, jumping to step 3-1) and continuing to scan the resources to be regulated.
The method for regulating wireless resources of a multi-service satellite based on bidirectional alternate scanning is further designed in that the scanning sub-process of the new regulation position of the resources to be regulated in the step 4) comprises the following steps:
4-1) entering a scanning sub-process of the resource adjustment position to be regulated;
4-2) judging conditions n, ipBoth even and both odd: if n, ipIf the number is even or odd, let the temporary variable q ═ n-ip-2)/2; if n, ipOne is even and the other is odd, the temporary variable q is made (n + i)p-1)/2; and execute ip＝ip+1；
4-3) detecting whether the resource at the q position is allocated: if not, outputting a resource position q, and returning to the main flow of the normalization after leaving the sub-flow; and if the resource is distributed, jumping to step 4-2), and continuously scanning the resource adjustment position to be regulated.
As the method for regulating wireless resources of a multi-service satellite based on bidirectional alternative scanning, a system for regulating wireless resources of a multi-service satellite based on bidirectional alternative scanning is provided, which includes:
the wireless resource regulating module regulates various related satellite wireless resources and executes a wireless resource regulating algorithm;
the network control center receives the resource regulating result of the wireless resource regulating module, records the result into a database, and sends a notice to the user ground terminal by the network control protocol signaling;
and the user ground terminal and the network control center form a network control transmission link, and after receiving the notification from the satellite network control center, the user ground terminal performs service communication according to the newly adjusted resource normalization result.
The invention has the beneficial effects that:
the wireless resource regulating method can ensure that the unallocated wireless resources are continuously distributed as much as possible, thereby facilitating the subsequent continuous allocation according to the communication request and reducing the allocation processing pressure of the communication request processing module; the regularization of the wireless resources enables resource service types to be converted into possible types, further realizes the dynamic adjustment of shares of different types of wireless resources, improves the utilization efficiency of the wireless resources of the satellite communication system, and achieves the maximization of capacity utilization.
Drawings
FIG. 1 is a flow chart of a method for regulating satellite radio resources according to the present invention.
FIG. 2 is a diagram of the overall effect of the method for regulating the wireless resources of a satellite
Fig. 3 is a schematic diagram illustrating an effect of the satellite radio resource regulating method according to the present invention (taking MDR service type as an example).
FIG. 4 is a sub-flow diagram of a resource scan to be warped according to the present invention.
Fig. 5 is a schematic diagram of a method for scanning radio resources to be regulated according to the present invention.
FIG. 6 is a sub-flowchart of the new resource to be rescaled position scanning according to the present invention.
Fig. 7 is a schematic diagram of a searching method for a new adjusted position of wireless resources to be regulated according to the present invention.
FIG. 8 is a block diagram of a patented system of the invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and detailed description.
As shown in fig. 1, the method for regulating wireless resources of a multi-service satellite based on bidirectional alternative scanning according to this embodiment includes the following steps:
1) several global variables are initialized: setting the number n of time slots of the current service type; resource to be regulated scanning count ir0; resource adjustment position scan count ip＝0；
2) Calling a resource scanning subprocess to be regulated to obtain a resource position p to be regulated returned by the subprocesso；
3) Calling a new adjustment position of the resource to be regulated to scan the sub-process, and obtaining an adjustment position p of the resource to be regulated, which is returned by the sub-process and is not allocated for used；
4) Judging whether a wireless resource regulating process stopping condition is satisfied, wherein the wireless resource regulating process stopping condition is as follows: (p)o<n/2&&pd<n/2&&po<pd)||(po>n/2&&pd>n/2&&po>pd)||(po>n/2&&pd<n/2&&po>(n-pd))||(po<n/2&&pd>n/2&&po<(n-pd) If the condition is satisfied, the radio resource regulating process is ended; if the condition is not satisfied, p is addedoAdjusting the resource to be regulated of a position to an unallocated resource adjusting position pdAnd skipping to the step 2) to continue executing the subsequent resource regulating process.
The basic idea of the satellite radio resource regulating method proposed by the present invention is to adjust the allocated radio resources in the edge regions of both ends of the radio resources to the central region of the radio resources under the premise that a certain type of satellite radio resources are continuously distributed and the resource allocation and recovery are in a random discrete form, so as to form the distributed radio resources in the central region and the unallocated radio resources are distributed on both sides of the resource region, so as to achieve the adjustment, conversion, etc. of the allocable share of the type of radio resources, as shown in fig. 3 (fig. 3 is only for MDR service), before the radio resource regulation, the allocated and unallocated radio resources are in a scattered distribution state, the resource regulating process is represented by the dashed arrows in the figure, and the regulating process is represented by the sequence numbers represented by ①, and the distributed radio resources are moved to the same position in the form of (1), and the regulating process is terminated when the regulating process is finished.
As shown in fig. 4, the sub-process of scanning the resource to be regulated in step 3) includes the following steps:
3-1) judgment of Condition irWhether it is an even number: if irIf it is an even number, let temporary variable t ═ i r2; if irIf not, let the temporary variable t be n- (i)r+ 1)/2; and execute ir＝ir+1。
3-2) detecting whether the resource at the t position is allocated: if the resource is distributed, outputting a position t of the resource to be regulated, and returning to the main regulating process after leaving the sub-process; and if not, jumping to step 3-1) and continuing to scan the resources to be regulated.
According to the above-mentioned flow, with reference to fig. 5, the wireless resource scanning method to be normalized starts with the boundaries on both sides of the continuously distributed wireless resources, and alternately determines the positions of the wireless resources to be normalized one by one from both sides to the middle as the basic scanning direction, the two-way scanning direction from both sides to the middle area is indicated in the figure, wherein the wireless resources at the position with the deeper gray scale belong to the allocated wireless resources, and the part of the wireless resources with the lighter gray scale belong to the unallocated wireless resources, according to the above-mentioned wireless resource scanning method to be normalized, the wireless resources at the position ① are scanned first, and whether the wireless resources at the position are allocated is determined, because the wireless resources at the position are allocated, the result of scanning the first returned wireless resources to be normalized is position ①, then, the next wireless resource position, i.e. the first position on the rightmost side (position at sequence number ②) is scanned one by one, and the wireless resources at the position is unallocated, and then the scanning direction is continued to be scanned in the sequence of wireless resources to be normalized 36 ①, ②, and the sequence of the scanning sequence numbers of the wireless resources to be scanned 7326, ⑤, ④, respectively.
As shown in fig. 6, the sub-process of scanning the new adjustment position of the resource to be regulated in step 4) includes the following steps:
4-1) entering a scanning sub-process of the resource adjustment position to be regulated.
4-2) judging conditions n, ipBoth even and both odd: if n, ipIf the number is even or odd, let the temporary variable q ═ n-ip-2)/2; if n, ipOne is even and the other is odd, the temporary variable q is made (n + i)p-1)/2; and execute ip＝ip+1。
4-3) detecting whether the resource at the q position is allocated: if not, outputting a resource position q, and returning to the main flow of the normalization after leaving the sub-flow; and if the resource is distributed, jumping to step 4-2), and continuously scanning the resource adjustment position to be regulated.
According to the new adjustment position scanning method of the wireless resources to be adjusted, firstly, the wireless resources at the position ① are scanned, whether the wireless resources at the position are allocated or not is judged, because the wireless resources at the position ① are not allocated, the result of scanning the new adjustment position of the first returned wireless resources to be adjusted is the position ①, then, the next wireless resources are scanned in a mode of scanning the resources one by one, namely, the position ② at the right side of the middle base line, the wireless resources at the position are judged to be unallocated, the second adjustment position is returned, the sequence of scanning the new adjustment positions 355636 and the sequence of scanning the new adjustment positions ② in the wireless resource to be adjusted is respectively marked by a visual sequence number of 367328, ③ in a sequence of scanning a sequence number of a wireless resource map ② and a sequence number of a scanning sequence number of a wireless resource to be scanned in a map of a wireless resource to be adjusted.
Referring to fig. 8, according to the foregoing method for regulating wireless resources of a multi-service satellite based on bidirectional alternative scanning, a system for regulating wireless resources of a multi-service satellite based on bidirectional alternative scanning is provided, which mainly comprises a wireless resource regulating module, a network control center, and a user ground terminal.
The wireless resource regulating module regulates various related satellite wireless resources and executes a wireless resource regulating algorithm. And the network control center receives the resource regulating result of the wireless resource regulating module, records the result into a database, and simultaneously sends out a notice of the resource regulating result in the form of network control protocol signaling and the like. And the user ground terminal and the network control center form a network control transmission link, and after receiving the notification from the satellite network control center, the user ground terminal performs service communication according to the newly adjusted resource normalization result.
The satellite radio resource regulating method and system based on bidirectional alternate scanning in the embodiment are used for respectively gathering allocated radio resources and unallocated radio resources, so that the unallocated radio resources can be converted into other types of radio resources, and the dynamic adjustment function of the multi-service satellite radio resources is realized.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A multi-service satellite wireless resource regulation method based on bidirectional alternate scanning is characterized by comprising the following steps:
1) several global variables are initialized: setting the number n of time slots of the current service type; resource to be regulated scanning count ir0; resource adjustment position scan count ip＝0；
2) Calling a resource scanning subprocess to be regulated to obtain a resource position p to be regulated returned by the subprocesso；
3) Calling a new adjustment position of the resource to be regulated to scan the sub-process, and obtaining an adjustment position p of the resource to be regulated, which is returned by the sub-process and is not allocated for used；
4) Judging whether a wireless resource regulating process stopping condition is satisfied, wherein the wireless resource regulating process stopping condition is as follows: (p)o<n/2&&pd<n/2&&po<pd)||(po>n/2&&pd>n/2&&po>pd)||(po>n/2&&pd<n/2&&po>(n-pd))||(po<n/2&&pd>n/2&&po<(n-pd) If the condition is satisfied, the radio resource regulating process is ended; if the condition is not satisfied, p is addedoAdjusting the resource to be regulated of a position to an unallocated resource adjusting position pdAnd skipping to the step 2) to continue executing the subsequent resource regulating process.
2. The method for regulating wireless resources of multi-service satellite based on bidirectional alternative scanning as claimed in claim 1, wherein the sub-process of scanning resources to be regulated in step 3) comprises the following steps:
3-1) judgment of Condition irWhether it is an even number: if irIf it is an even number, let temporary variable t ═ ir2; if irIf not, let the temporary variable t be n- (i)r+ 1)/2; and execute ir＝ir+1；
3-2) detecting whether the resource at the t position is allocated: if the resource is distributed, outputting a position t of the resource to be regulated, and returning to the main regulating process after leaving the sub-process; and if not, jumping to step 3-1) and continuing to scan the resources to be regulated.
3. The method for regulating wireless resources of multi-service satellite based on bidirectional alternative scanning as claimed in claim 1, wherein the scanning sub-process of the new adjustment position of the resources to be regulated in step 4) comprises the following steps:
4-1) entering a scanning sub-process of the resource adjustment position to be regulated;
4-2) judging conditions n, ipBoth even and both odd: if n, ipIf the number is even or odd, let the temporary variable q ═ n-ip-2)/2; if n, ipOne is even and the other is odd, the temporary variable q is made (n + i)p-1)/2; and execute ip＝ip+1；
4-3) detecting whether the resource at the q position is allocated: if not, outputting a resource position q, and returning to the main flow of the normalization after leaving the sub-flow; and if the resource is distributed, jumping to step 4-2), and continuously scanning the resource adjustment position to be regulated.
4. The system for regulating radio resources of multi-service satellite based on bidirectional alternative scanning as set forth in any one of claims 1-3, comprising:
the wireless resource regulating module regulates various related satellite wireless resources and executes a wireless resource regulating algorithm;
the network control center receives the resource regulating result of the wireless resource regulating module, records the result into a database, and sends a notice to the user ground terminal by the network control protocol signaling; and the user ground terminal and the network control center form a network control transmission link, and after receiving the notification from the satellite network control center, the user ground terminal performs service communication according to the newly adjusted resource normalization result.
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