CN108243498B - Method and device for distributing satellite system resources - Google Patents
Method and device for distributing satellite system resources Download PDFInfo
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- CN108243498B CN108243498B CN201611213534.8A CN201611213534A CN108243498B CN 108243498 B CN108243498 B CN 108243498B CN 201611213534 A CN201611213534 A CN 201611213534A CN 108243498 B CN108243498 B CN 108243498B
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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
- H04W72/0446—Resources in time domain, e.g. slots or frames
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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
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
Abstract
The embodiment of the invention provides a method and a device for allocating satellite system resources, wherein the method comprises the following steps: a base station receives request information of a terminal; determining the channel type and the time slot number TsLen according to the request information; traversing all carriers of spot beams of a satellite system by adopting a channel type, a time slot number TsLen and a preset resource allocation mode to generate a target carrier list; carrying out priority sequencing on the carriers in the target carrier list according to a preset rule to obtain the carrier with the highest priority; determining the carrier with the highest priority as a target carrier; by applying the embodiment of the invention, a target carrier list can be generated according to a preset resource allocation mode, carriers in the target carrier list are subjected to priority sequencing to obtain the carrier with the highest priority, the carrier with the highest priority is determined as the target carrier, and the time slot is allocated on the target carrier, so that the optimal allocation of satellite system resources can be realized.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for allocating resources of a satellite system.
Background
The satellite system is a system which uses a satellite as a relay station to transmit communication signals and communicates among a plurality of ground stations, and the main purpose of the satellite communication is to realize seamless coverage on the ground.
In recent years, the time division multiple access multiplexing technique has been widely used in satellite communication, i.e. a plurality of ground stations occupy the same frequency band but occupy different time slots. Compared with frequency division multiple access mode, the time division multiple access multiplexing technology can not generate intermodulation interference, can not use up-down frequency to separate signals of all the terrestrial stations, is suitable for digital communication, can allocate transmission bandwidth according to the change of traffic volume and requirement, and can greatly increase the actual capacity.
The physical resources are represented in Time by TDMA (Time Division Multiple Access) frames and Time slots, one TDMA frame including 40 Time slots with slot numbers from 0 to 39. The spot beam includes a plurality of carriers, including a common carrier and a service carrier, a Dedicated Channel DCH (Dedicated Channel) can be carried on the service carrier of the spot beam, and the Dedicated Channel is divided into two types according to the length of the number of occupied time slots: DCH4 (continuously occupying 4 slots) and DCH8 (continuously occupying 8 slots). The gateway station allocates a DCH4 channel or a DCH8 channel to the user as determined by the user's request. The DCH channels allocated to users are represented by frequency points, frames, and time slots. In the resource allocation procedure, the gateway station simultaneously allocates transmission power to the DCH channels in addition to the radio resources of the DCH channels.
The existing resource allocation method mainly improves the utilization rate of wireless resources, such as the utilization rate of time slots, however, a satellite system is a system with limited downlink transmission power, and the existing resource allocation method only ensures that the total power of the same time slot corresponding to all carriers does not exceed the maximum downlink transmission power of a spot beam, and has no corresponding technical scheme for better reducing the downlink transmission power of the whole spot beam.
Disclosure of Invention
In view of the above, embodiments of the present invention are proposed to provide a method and apparatus for satellite system resource allocation that overcomes or at least partially solves the above mentioned problems.
In order to solve the above problem, an embodiment of the present invention discloses a method for allocating resources of a satellite system, where the method includes:
receiving request information of a terminal;
determining the channel type and the time slot number TsLen according to the request information;
traversing all carriers of the spot beams of the satellite system by adopting the channel type, the time slot number TsLen and a preset resource allocation mode to generate a target carrier list;
carrying out priority sequencing on the carriers in the target carrier list according to a preset rule to obtain a carrier with the highest priority;
determining the carrier with the highest priority as a target carrier;
and allocating TsLen continuous time slots to the terminal on the target carrier.
Preferably, the preset resource allocation mode includes a power priority mode, and the step of traversing all carriers of the spot beams of the satellite system by using the channel type, the number of time slots TsLen, and the preset resource allocation mode to generate the target carrier list includes:
traversing a carrier of a spot beam of the satellite system;
when the channel of the carrier is the channel type, judging whether the carrier meets the distribution condition corresponding to the power priority mode;
and if so, adding the carrier into a target carrier list.
Preferably, when the channel of the carrier is the channel type, the step of determining whether the carrier meets the allocation condition corresponding to the power priority mode includes:
obtaining TsLen continuous time slots which comprise the starting point of the idle time slot on the carrier;
acquiring the power of a carrier wave of a point beam at each time slot of the TsLen continuous time slots;
calculating to obtain a first power sum corresponding to each time slot by adopting the power of the carrier of the spot beam of each time slot;
judging whether the first power sum of each time slot is less than or equal to the preset maximum power;
if yes, determining that the carrier wave meets the allocation condition corresponding to the power priority mode;
and if not, acquiring the TsLen continuous time slots including the starting point of the idle time slot above and below the carrier, and returning to the step of acquiring the power of the carrier of the point beam respectively at each time slot of the TsLen continuous time slots.
Preferably, the preset resource allocation mode includes a time slot priority mode, and the step of traversing all carriers of the spot beams of the satellite system by using the channel type, the number of time slots TsLen, and the preset resource allocation mode to generate the target carrier list includes:
traversing a carrier of a spot beam of the satellite system;
counting the number of idle time slots of the carrier;
judging whether the number of the idle time slots is larger than or equal to the number of the time slots TsLen;
and if so, adding the carrier into a target carrier list.
Preferably, after the step of traversing all carriers of the spot beams of the satellite system by using the channel type, the number of time slots TsLen, and the preset resource allocation mode to generate the target carrier list, the method further includes:
judging whether the target carrier list is empty or not;
and if so, prompting a resource allocation failure message.
Preferably, the step of performing priority ranking on the carriers in the target carrier list according to a preset rule to obtain a carrier with the highest priority includes:
acquiring the power of all carriers of a point beam at the first idle time slot of each carrier in the target carrier list;
calculating to obtain a second power sum of the first idle time slot of each carrier by adopting the power of all carriers of the point beam in the first idle time slot of each carrier;
sorting the second power sums from small to large to obtain a minimum power sum;
and determining the minimum power and the corresponding carrier as the carrier with the highest priority.
Preferably, the step of performing priority ranking on the carriers in the target carrier list according to a preset rule to obtain a carrier with the highest priority includes:
acquiring the number of idle time slots of each carrier in the target carrier list;
sequencing the number of idle time slots of each carrier from large to small to obtain the maximum number of idle time slots;
and determining the carrier corresponding to the maximum idle time slot number as the carrier with the highest priority.
In order to solve the above problem, an embodiment of the present invention discloses an apparatus for allocating satellite system resources, where the apparatus includes:
a request message receiving module for receiving request information of a terminal;
a channel type and time slot number determining module, configured to determine a channel type and a time slot number TsLen according to the request information;
a target carrier list generation module, configured to traverse all carriers of the spot beams of the satellite system by using the channel type, the number of time slots TsLen, and a preset resource allocation mode, and generate a target carrier list;
the priority ordering module is used for carrying out priority ordering on the carriers in the target carrier list according to a preset rule to obtain the carrier with the highest priority;
a target carrier determining module, configured to determine the carrier with the highest priority as a target carrier;
and the time slot allocation module is used for allocating TsLen continuous time slots to the terminal on the target carrier.
Preferably, the preset resource allocation mode includes a power priority mode, and the target carrier list generating module includes:
a first carrier traversal submodule for traversing a carrier of a spot beam of the satellite system;
the first judgment submodule is used for judging whether the carrier wave meets the distribution condition corresponding to the power priority mode or not when the channel of the carrier wave is the channel type;
and the first target carrier list generation submodule is used for adding the carrier into a target carrier list.
Preferably, the first judgment sub-module includes:
a time slot obtaining unit, configured to obtain TsLen consecutive time slots that include a starting point of an idle time slot on the carrier;
a power obtaining unit, configured to obtain power of a carrier of a spot beam at each time slot of the TsLen consecutive time slots;
a first power sum calculating unit, configured to calculate a first power sum corresponding to each time slot by using the power of the carrier of the spot beam at each time slot;
the first power sum judgment unit is used for judging whether the first power sum of each time slot is less than or equal to the preset maximum power;
the carrier judging unit is used for judging that the carrier accords with the distribution condition corresponding to the power priority mode when the sum of the first power of each time slot is less than or equal to the preset maximum power; otherwise, acquiring the TsLen continuous time slots including the starting point of the idle time slot above and below the carrier, and returning to the step of acquiring the power of the carrier of the point beam at each time slot of the TsLen continuous time slots.
Preferably, the preset resource allocation pattern includes a timeslot priority pattern, and the target carrier list generating module includes:
a second carrier traversing submodule for traversing a carrier of a spot beam of the satellite system;
the idle time slot number counting submodule is used for counting the number of idle time slots of the carrier;
the second judging submodule is used for judging whether the number of the idle time slots is greater than or equal to the number of the time slots TsLen;
and the second target carrier list generation submodule is used for adding the carrier into the target carrier list.
Preferably, the apparatus further comprises:
a target carrier list judging module, configured to judge whether the target carrier list is empty;
the allocation failure message prompting module is used for prompting a resource allocation failure message;
preferably, the prioritization module comprises:
a power obtaining submodule, configured to obtain powers of all carriers of a spot beam at a first idle time slot of each carrier in the target carrier list;
the second power sum calculation submodule is used for calculating and obtaining a second power sum of the first idle time slot of each carrier by adopting the power of all the carriers of the point beam in the first idle time slot of each carrier;
the first sequencing submodule is used for sequencing the second power sum from small to large to obtain a minimum power sum;
and the carrier determining submodule with the highest first priority is used for determining the minimum power and the corresponding carrier as the carrier with the highest priority.
Preferably, the prioritization module comprises:
an idle time slot number obtaining submodule, configured to obtain the number of idle time slots of each carrier in the target carrier list;
the second sequencing submodule is used for sequencing the idle time slot number of each carrier from large to small to obtain the maximum idle time slot number;
and the carrier determining submodule with the highest second priority is used for determining the carrier corresponding to the maximum idle time slot number as the carrier with the highest priority.
The embodiment of the invention has the following advantages:
in the embodiment of the invention, a base station receives request information of a terminal; determining the channel type and the time slot number TsLen according to the request information; traversing all carriers of spot beams of a satellite system by adopting a channel type, a time slot number TsLen and a preset resource allocation mode to generate a target carrier list; carrying out priority sequencing on the carriers in the target carrier list according to a preset rule to obtain the carrier with the highest priority; determining the carrier with the highest priority as a target carrier; by applying the embodiment of the invention, a target carrier list can be generated according to a preset resource allocation mode, carriers in the target carrier list are subjected to priority sequencing to obtain the carrier with the highest priority, the carrier with the highest priority is determined as the target carrier, and the time slot is allocated on the target carrier, so that the optimal allocation of satellite system resources can be realized.
Furthermore, the preset resource allocation mode can be a power priority mode, and can effectively reduce the downlink transmission power of the satellite in a satellite system with limited downlink transmission power, reduce the interference in the system and among the systems, and improve the service quality and the user experience.
Furthermore, the preset resource allocation mode can be a time slot priority mode, and more terminal users or more services can be accessed when the time slot resources of the satellite system are in short supply, so that the utilization rate of the time slot is improved.
Drawings
FIG. 1 is a flowchart illustrating the steps of one embodiment of a method for allocating resources in a satellite system;
FIG. 2 is a flow chart of a satellite system resource allocation of an embodiment of the present invention;
fig. 3 is a block diagram of an embodiment of the apparatus for allocating satellite system resources according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, a flowchart illustrating steps of an embodiment of a method for allocating resources of a satellite system according to the present invention is shown, where the method specifically includes the following steps:
The request information of the terminal may include a Service type requested by the terminal, such as a voice Service or an audio/video Service, and may also include information such as Qos (Quality of Service) of the Service.
And step 102, determining the channel type and the time slot number TsLen according to the request information.
After receiving the request information of the terminal, the channel type allocated to the terminal, which may be a DCH channel including DCH4 or DCH8, may be determined according to the request information, and then the number TsLen of timeslots to be allocated to the channel type is obtained, for example, the number of timeslots of a DCH4 channel is 4, and the number of timeslots of a DCH8 channel is 8.
And 103, traversing all carriers of the spot beams of the satellite system by adopting the channel type, the time slot number TsLen and a preset resource allocation mode to generate a target carrier list.
In practical application, a communication channel needs to carry carriers, a spot beam of a satellite system may have multiple carriers, and after determining a channel type and a time slot number TsLen allocated to a terminal, a corresponding carrier needs to be selected for carrying to perform communication.
In a preferred embodiment of the present invention, the preset resource allocation mode may be a power priority mode, and the power priority mode may be a mode in which the DCH timeslot allocated to the terminal minimizes the downlink transmission power of the entire spot beam; the step 103 of traversing all carriers of the spot beams of the satellite system by using the channel type, the number of time slots TsLen, and the preset resource allocation mode to generate the target carrier list may include the following sub-steps:
sub-step 1031 of traversing carriers of spot beams of the satellite system.
The spot beam of the satellite system can have a plurality of carriers, and whether the carriers are the carriers conforming to the power priority mode needs to be traversed one by one.
And a substep 1032 of judging whether the carrier wave meets the allocation condition corresponding to the power priority mode when the channel of the carrier wave is the channel type.
In the process of traversing the carrier, first determining whether the carrier has a corresponding channel type, for example, the channel type allocated to the terminal is DCH4, and when the carrier has a DCH4 channel, determining whether the carrier meets an allocation condition corresponding to the power priority mode, which may specifically include the following sub-steps:
a substep 1032-1 of obtaining TsLen continuous time slots including the start of an idle time slot on the carrier;
a substep 1032-2 of obtaining the power of the carrier of the spot beam at each time slot of the TsLen continuous time slots respectively;
a substep 1032-3, calculating to obtain a first power sum corresponding to each time slot by adopting the power of the carrier of the spot beam of each time slot;
a substep 1032-4 of judging whether the first power sum of each time slot is less than or equal to a preset maximum power;
a substep 1032-5 of judging that the carrier wave meets the distribution condition corresponding to the power priority mode;
and a substep 1032-6 of obtaining TsLen continuous time slots including the start point of the idle time slot above and below the carrier, and returning to the step of obtaining the power of the carrier of the spot beam at each time slot of the TsLen continuous time slots.
For the selected traversed carrier, starting from the starting point of the first idle time slot of the DCH channel, obtaining TsLen continuous time slots including the starting point of the idle time slot, and obtaining the power of the carrier of the spot beam at each time slot of the TsLen continuous time slots; the power of each time slot may be reported periodically by the gateway transceiver to the gateway station. After obtaining the power, calculating a first power sum according to the following formula:
Ptsi＝Ptsi_Carrer1+Ptsi_Carrer2+Ptsi_Carrer3+Ptsi_CarrerN≤PMax_Cell
in the formula, PtsiIs the first sum of powers, P, of one of TsLen consecutive time slotstsi_CarrerNFor one of the TsLen consecutive time slots, the power, P, of carrier 1, carrier 2, carrier NMax_CellThe maximum power may be a maximum transmit power of the spot beam.
If the first power sum of each time slot of the obtained TsLen continuous time slots meets the above formula, determining that the carrier meets the allocation condition corresponding to the power priority mode, otherwise, returning to substep 1032-1, and continuing to obtain the next TsLen continuous time slots of the carrier, which include the starting point of the idle time slot, until the TsLen continuous time slots of all the starting points of the idle time slots on the carrier are checked, and when the TsLen continuous time slots of one starting point of the idle time slot on the carrier meet the above formula, determining that the carrier meets the allocation condition corresponding to the power priority mode.
And after the current carrier is traversed, if the carrier is not traversed, returning to the substep 1031, and continuously traversing the next carrier until all carriers under the spot beam are traversed.
To better explain the embodiment of the present invention, the following describes an example of determining whether a carrier meets an allocation condition corresponding to a power-first mode.
Taking DCH4 channel as an example, if the starting timeslot point is 0, then timeslots 0 to 3 all belong to the channel, and the timeslot identifiers are TS0, TS1, TS2, and TS 3; assuming that the spot beam has 3 carriers, identified as Carrer1, Carrer2, Carrer3, the power of each time slot on the carrier is identified as follows:
TS0 has power P in Carrer1, Carrer2 and Carrer3ts0_Carrer1、Pts0_Carrer2、Pts0_Carrer3；
TS1 has power P in Carrer1, Carrer2 and Carrer3ts1_Carrer1、Pts1_Carrer2、Pts1_Carrer3；
TS2 has power P in Carrer1, Carrer2 and Carrer3ts2_Carrer1、Pts2_Carrer2、Pts2_Carrer3；
TS3 has power P in Carrer1, Carrer2 and Carrer3ts3_Carrer1、Pts3_Carrer2、Pts3_Carrer3；
Then calculate:
first power sum of TS 0: pts0＝Pts0_Carrer1+Pts0_Carrer2+Pts0_Carrer3
First power sum of TS 1: pts1＝Pts1_Carrer1+Pts1_Carrer2+Pts1_Carrer3
First power sum of TS 2: pts2＝Pts2_Carrer1+Pts2_Carrer2+Pts2_Carrer3
First power sum of TS 3: pts3＝Pts3_Carrer1+Pts3_Carrer2+Pts3_Carrer3
When the first power is Pts0、Pts1、Pts2、Pts3Are all less than the preset maximum power PMax_CellAnd then, judging that the carrier accords with the allocation condition corresponding to the power priority mode.
The above manner of determining whether the carrier meets the allocation condition corresponding to the power priority mode is only an example, and when the embodiment of the present invention is implemented, other manners may be adopted to determine according to the actual situation, which is not limited in the embodiment of the present invention.
And a substep 1033 of adding said carrier to a list of target carriers.
The substep 1031 to the substep 1033 are embodiments in which, when the preset resource allocation mode is the power priority mode, all carriers of the spot beam of the satellite system are traversed by using the channel type, the number of time slots TsLen, and the preset resource allocation mode, and a target carrier list is generated.
As another embodiment of the present invention, the preset resource allocation mode may be a timeslot priority mode, and the timeslot priority mode may be that DCH timeslots allocated to the terminal are centrally allocated on one or more carriers; the step 103 of traversing all carriers of the spot beams of the satellite system by using the channel type, the number of time slots TsLen, and the preset resource allocation mode to generate the target carrier list may include the following sub-steps:
substep 1034 of traversing carriers of a spot beam of the satellite system;
substep 1035 of counting the number of idle slots of the carrier;
a substep 1036 of judging whether the number of the idle time slots is greater than or equal to the number of the time slots TsLen;
and a substep 1037 of adding the carrier to the list of target carriers.
In the process of traversing the carrier, it is first determined whether the carrier has a corresponding channel type, for example, when the channel type allocated to the terminal is DCH4, at least 4 consecutive idle timeslots on the carrier are required, so the number of idle timeslots on the carrier may be counted, when the number of idle timeslots is greater than or equal to the number of timeslots TsLen, the carrier is a carrier conforming to the timeslot priority mode, and the carrier is added to the target carrier list, otherwise, the sub-step 1034 is returned to continue traversing the next carrier until all carriers under the spot beam have been traversed.
The substeps 1034 to 1037 are embodiments in which, when the preset resource allocation mode is the time slot priority mode, all carriers of the spot beam of the satellite system are traversed by using the channel type, the number of time slots TsLen, and the preset resource allocation mode to generate the target carrier list.
In a preferred embodiment of the present invention, after generating the target carrier list, the method may further include:
judging whether the target carrier list is empty or not; if so, prompting a resource allocation failure message;
in the preferred embodiment, after the target carrier list is generated according to the timeslot priority mode or the power priority mode, if the target carrier list is empty, it may indicate that the current satellite system has a high load, a timeslot is in short supply or power is too high, and no suitable carrier exists currently, and may prompt a terminal resource allocation failure message.
And 104, carrying out priority sequencing on the carriers in the target carrier list according to a preset rule to obtain the carrier with the highest priority.
The carriers in the target carrier list are carriers conforming to a power priority mode or a time slot priority mode, the carriers conforming to the conditions can be subjected to priority ordering according to a preset rule to obtain the carrier with the highest priority, and the preset rule is different according to the allocation mode which is the power priority mode or the time slot priority mode.
As an embodiment of the present invention, when generating the target carrier list according to the power first mode, the step 104 may include the following sub-steps:
substep 1041, obtaining the power of all carriers of the spot beam at the first idle time slot of each carrier in the target carrier list;
substep 1042, calculating a second power sum of the first idle time slot of each carrier by using the powers of all carriers of the point beam in the first idle time slot of each carrier;
substep 1043, sorting the second power sums from small to large to obtain a minimum power sum;
and a substep 1044 of determining the minimum power and the corresponding carrier as the carrier with the highest priority.
For the carriers in the target carrier list generated according to the power priority mode, the first idle time slot of each carrier can be obtained first, the power of all carriers of the point beam at the first idle time slot of each carrier is obtained, then the second power sum of the first idle time slot of each carrier is calculated, the second power sum is sorted from small to large, and the minimum power sum corresponding to the carrier is the carrier with the highest priority.
As another embodiment of the present invention, when generating the target carrier list according to the slot-first mode, the step 104 may include the following sub-steps:
substep 1045, obtaining the number of idle time slots of each carrier in the target carrier list;
substep 1046, sorting the number of idle time slots of each carrier from large to small to obtain the maximum number of idle time slots;
substep 1047, determining the carrier corresponding to the maximum number of idle timeslots as the carrier with the highest priority.
According to the carriers in the target carrier list generated in the time slot priority mode, the number of idle time slots of each carrier can be obtained first, then the number of idle time slots of each carrier is sequenced from large to small, and the maximum number of idle time slots can be obtained, wherein the carrier corresponding to the maximum number of idle time slots is the carrier with the highest priority.
And 105, determining the carrier with the highest priority as a target carrier.
And 106, allocating TsLen continuous time slots to the terminal on the target carrier.
After the carrier with the highest priority in the target carrier list is determined as the target carrier, TsLen continuous time slots may be allocated to the terminal on the target carrier from the first idle time slot.
In the embodiment of the invention, request information of a terminal is received; determining the channel type and the time slot number TsLen according to the request information; traversing all carriers of spot beams of a satellite system by adopting a channel type, a time slot number TsLen and a preset resource allocation mode to generate a target carrier list; carrying out priority sequencing on the carriers in the target carrier list according to a preset rule to obtain the carrier with the highest priority; determining the carrier with the highest priority as a target carrier; by applying the embodiment of the invention, a target carrier list can be generated according to a preset resource allocation mode, carriers in the target carrier list are subjected to priority sequencing to obtain the carrier with the highest priority, the carrier with the highest priority is determined as the target carrier, and the time slot is allocated on the target carrier, so that the optimal allocation of satellite system resources can be realized.
Furthermore, the preset resource allocation mode can be a power priority mode, and can effectively reduce the downlink transmission power of the satellite in a satellite system with limited downlink transmission power, reduce the interference in the system and among the systems, and improve the service quality and the user experience.
Furthermore, the preset resource allocation mode can be a time slot priority mode, and more terminal users or more services can be accessed when the time slot resources of the satellite system are in short supply, so that the utilization rate of the time slot is improved.
In order to better explain the embodiments of the present invention, the following description is made by way of example with reference to fig. 2.
As shown in fig. 2, it is a flowchart of a resource allocation method of a satellite system according to an embodiment of the present invention, including:
s1, receiving a user request;
s2, determining the DCH channel type and the time slot number TsLen according to the user request;
s3, judging whether the resource allocation mode is a time slot priority mode or a power priority mode; when the resource allocation mode is the slot priority mode, performing S4-S8; when the resource allocation mode is the power priority mode, performing S10-S19;
s4, judging whether the number of idle time slots of the carrier is more than or equal to TsLen; if yes, go to S5; if not, executing S6;
s5, adding the carrier into the target carrier list;
s6, judging whether all carriers have been traversed; if yes, executing S7, otherwise, returning to S4;
s7, judging whether the target carrier list is empty, if yes, executing S16, and if not, executing S8;
s8, sorting the carriers in the target carrier list from large to small according to the number of idle time slots; then executing S18-S19;
s10, determining the possible starting time point of the DCH channel according to the distributed DCH channel type;
s11, starting from the first idle starting point of a DCH channel on the carrier, calculating the power sum of each time slot of TsLen continuous time slots on all carriers;
s12, judging that the power sum of TsLen continuous time slots meets the power requirement; if yes, executing S13, otherwise, executing S14;
s13, adding the carrier into the target list;
s14, judging whether all carriers have been traversed; if yes, executing S15, otherwise, returning to S11;
s15, judging whether the target carrier list is empty, if yes, executing S16, and if not, executing S17;
s16, prompting the failure message of resource allocation;
s17, sorting the carriers in the target carrier list according to the power of the starting point of the time slot of the first idle DCH channel on the carriers on all the carriers and the sequence from small to large;
s18, the first carrier in the ordered target carrier list is used as the allocated target carrier;
and S19, continuously allocating TsLen time slots on the determined target carrier from the first idle time slot.
The above-described allocation flow is only an example and should not be taken as a limitation of the present invention.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Referring to fig. 3, a block diagram of an embodiment of the apparatus for allocating resources of a satellite system according to the present invention is shown, which may specifically include the following modules:
a request message receiving module 201, configured to receive request information of a terminal;
a channel type and time slot number determining module 202, configured to determine a channel type and a time slot number TsLen according to the request information;
a target carrier list generating module 203, configured to traverse all carriers of the spot beams of the satellite system by using the channel type, the number of time slots TsLen, and a preset resource allocation mode, and generate a target carrier list;
a priority sorting module 204, configured to perform priority sorting on the carriers in the target carrier list according to a preset rule, so as to obtain a carrier with a highest priority;
a target carrier determining module 205, configured to determine the carrier with the highest priority as a target carrier;
a time slot allocating module 206, configured to allocate TsLen consecutive time slots to the terminal on the target carrier.
In an embodiment of the present invention, the preset resource allocation pattern includes a power priority pattern, and the target carrier list generating module 203 includes:
a first carrier traversal submodule for traversing a carrier of a spot beam of the satellite system;
the first judgment submodule is used for judging whether the carrier wave meets the distribution condition corresponding to the power priority mode or not when the channel of the carrier wave is the channel type;
and the first target carrier list generation submodule is used for adding the carrier into a target carrier list.
Wherein the first judgment sub-module includes:
a time slot obtaining unit, configured to obtain TsLen consecutive time slots that include a starting point of an idle time slot on the carrier;
a power obtaining unit, configured to obtain power of a carrier of a spot beam at each time slot of the TsLen consecutive time slots;
a first power sum calculating unit, configured to calculate a first power sum corresponding to each time slot by using the power of the carrier of the spot beam at each time slot;
the first power sum judgment unit is used for judging whether the first power sum of each time slot is less than or equal to the preset maximum power;
the carrier judging unit is used for judging that the carrier accords with the distribution condition corresponding to the power priority mode when the sum of the first power of each time slot is less than or equal to the preset maximum power; otherwise, acquiring the TsLen continuous time slots including the starting point of the idle time slot above and below the carrier, and returning to the step of acquiring the power of the carrier of the point beam at each time slot of the TsLen continuous time slots.
In another embodiment of the present invention, the preset resource allocation pattern includes a timeslot priority pattern, and the target carrier list generating module 203 includes:
a second carrier traversing submodule for traversing a carrier of a spot beam of the satellite system;
the idle time slot number counting submodule is used for counting the number of idle time slots of the carrier;
the second judging submodule is used for judging whether the number of the idle time slots is greater than or equal to the number of the time slots TsLen;
and the second target carrier list generation submodule is used for adding the carrier into the target carrier list.
In a preferred embodiment of the present invention, the apparatus further comprises:
a target carrier list judging module, configured to judge whether the target carrier list is empty;
the allocation failure message prompting module is used for prompting a resource allocation failure message;
in one embodiment of the present invention, the prioritization module 204 includes:
a power obtaining submodule, configured to obtain powers of all carriers of a spot beam at a first idle time slot of each carrier in the target carrier list;
the second power sum calculation submodule is used for calculating and obtaining a second power sum of the first idle time slot of each carrier by adopting the power of all the carriers of the point beam in the first idle time slot of each carrier;
the first sequencing submodule is used for sequencing the second power sum from small to large to obtain a minimum power sum;
and the carrier determining submodule with the highest first priority is used for determining the minimum power and the corresponding carrier as the carrier with the highest priority.
In another embodiment of the present invention, the prioritization module 204 includes:
an idle time slot number obtaining submodule, configured to obtain the number of idle time slots of each carrier in the target carrier list;
the second sequencing submodule is used for sequencing the idle time slot number of each carrier from large to small to obtain the maximum idle time slot number;
and the carrier determining submodule with the highest second priority is used for determining the carrier corresponding to the maximum idle time slot number as the carrier with the highest priority.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The method and apparatus for allocating satellite system resources provided by the present invention are introduced in detail above, and the principle and the implementation of the present invention are explained in detail herein by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A method for resource allocation in a satellite system, the method comprising:
receiving request information of a terminal;
determining the channel type and the time slot number TsLen according to the request information;
traversing all carriers of the spot beams of the satellite system by adopting the channel type, the time slot number TsLen and a preset resource allocation mode to generate a target carrier list; the preset resource allocation mode comprises a power priority mode and a time slot priority mode;
carrying out priority sequencing on the carriers in the target carrier list according to a preset rule to obtain a carrier with the highest priority;
determining the carrier with the highest priority as a target carrier;
allocating TsLen continuous time slots to the terminal on the target carrier;
when the preset resource allocation mode is the power priority mode, the step of traversing all carriers of the spot beams of the satellite system by using the channel type, the time slot number TsLen and the preset resource allocation mode to generate a target carrier list includes:
traversing a carrier of a spot beam of the satellite system;
when the channel of the carrier is the channel type, judging whether the carrier meets the distribution condition corresponding to the power priority mode;
if yes, adding the carrier into a target carrier list;
the step of judging whether the carrier meets the allocation condition corresponding to the power priority mode when the channel of the carrier is the channel type comprises:
obtaining TsLen continuous time slots which comprise the starting point of the idle time slot on the carrier;
acquiring the power of a carrier wave of a point beam at each time slot of the TsLen continuous time slots;
calculating to obtain a first power sum corresponding to each time slot by adopting the power of the carrier of the spot beam of each time slot;
judging whether the first power sum of each time slot is less than or equal to the preset maximum power;
if yes, determining that the carrier wave meets the allocation condition corresponding to the power priority mode;
and if not, acquiring the TsLen continuous time slots including the starting point of the idle time slot above and below the carrier, and returning to the step of acquiring the power of the carrier of the point beam respectively at each time slot of the TsLen continuous time slots.
2. The method according to claim 1, wherein when the preset resource allocation mode is the timeslot priority mode, the step of traversing all carriers of a spot beam of the satellite system by using the channel type, the number of timeslots TsLen and the preset resource allocation mode to generate a target carrier list comprises:
traversing a carrier of a spot beam of the satellite system;
counting the number of idle time slots of the carrier;
judging whether the number of the idle time slots is larger than or equal to the number of the time slots TsLen;
and if so, adding the carrier into a target carrier list.
3. The method according to claim 1 or 2, wherein after the step of generating a target carrier list by traversing all carriers of a spot beam of the satellite system using the channel type, the number of time slots TsLen and a preset resource allocation pattern, further comprising:
judging whether the target carrier list is empty or not;
and if so, prompting a resource allocation failure message.
4. The method according to claim 1, wherein the step of prioritizing the carriers in the target carrier list according to a preset rule to obtain a carrier with a highest priority comprises:
acquiring the power of all carriers of a point beam at the first idle time slot of each carrier in the target carrier list;
calculating to obtain a second power sum of the first idle time slot of each carrier by adopting the power of all carriers of the point beam in the first idle time slot of each carrier;
sorting the second power sums from small to large to obtain a minimum power sum;
and determining the minimum power and the corresponding carrier as the carrier with the highest priority.
5. The method according to claim 2, wherein the step of prioritizing the carriers in the target carrier list according to a preset rule to obtain a carrier with a highest priority comprises:
acquiring the number of idle time slots of each carrier in the target carrier list;
sequencing the number of idle time slots of each carrier from large to small to obtain the maximum number of idle time slots;
and determining the carrier corresponding to the maximum idle time slot number as the carrier with the highest priority.
6. An apparatus for satellite system resource allocation, the apparatus comprising:
a request message receiving module for receiving request information of a terminal;
a channel type and time slot number determining module, configured to determine a channel type and a time slot number TsLen according to the request information;
a target carrier list generation module, configured to traverse all carriers of the spot beams of the satellite system by using the channel type, the number of time slots TsLen, and a preset resource allocation mode, and generate a target carrier list; the preset resource allocation mode comprises a power priority mode and a time slot priority mode;
the priority ordering module is used for carrying out priority ordering on the carriers in the target carrier list according to a preset rule to obtain the carrier with the highest priority;
a target carrier determining module, configured to determine the carrier with the highest priority as a target carrier;
a time slot allocation module, configured to allocate TsLen consecutive time slots to the terminal on the target carrier;
when the preset resource allocation mode is the power priority mode, the target carrier list generating module includes:
a first carrier traversal submodule for traversing a carrier of a spot beam of the satellite system;
the first judgment submodule is used for judging whether the carrier wave meets the distribution condition corresponding to the power priority mode or not when the channel of the carrier wave is the channel type;
a first target carrier list generation submodule, configured to add the carrier to a target carrier list;
the first judgment sub-module includes:
a time slot obtaining unit, configured to obtain TsLen consecutive time slots that include a starting point of an idle time slot on the carrier;
a power obtaining unit, configured to obtain power of a carrier of a spot beam at each time slot of the TsLen consecutive time slots;
a first power sum calculating unit, configured to calculate a first power sum corresponding to each time slot by using the power of the carrier of the spot beam at each time slot;
the first power sum judgment unit is used for judging whether the first power sum of each time slot is less than or equal to the preset maximum power;
the carrier judging unit is used for judging that the carrier accords with the distribution condition corresponding to the power priority mode when the sum of the first power of each time slot is less than or equal to the preset maximum power; otherwise, acquiring the TsLen continuous time slots including the starting point of the idle time slot above and below the carrier, and returning to the step of acquiring the power of the carrier of the point beam at each time slot of the TsLen continuous time slots.
7. The apparatus of claim 6, wherein when the preset resource allocation mode is the timeslot priority mode, the target carrier list generation module comprises:
a second carrier traversing submodule for traversing a carrier of a spot beam of the satellite system;
the idle time slot number counting submodule is used for counting the number of idle time slots of the carrier;
the second judging submodule is used for judging whether the number of the idle time slots is greater than or equal to the number of the time slots TsLen;
and the second target carrier list generation submodule is used for adding the carrier into the target carrier list.
8. The apparatus of claim 6 or 7, further comprising:
a target carrier list judging module, configured to judge whether the target carrier list is empty;
and the allocation failure message prompting module is used for prompting the resource allocation failure message.
9. The apparatus of claim 6, wherein the prioritization module comprises:
a power obtaining submodule, configured to obtain powers of all carriers of a spot beam at a first idle time slot of each carrier in the target carrier list;
the second power sum calculation submodule is used for calculating and obtaining a second power sum of the first idle time slot of each carrier by adopting the power of all the carriers of the point beam in the first idle time slot of each carrier;
the first sequencing submodule is used for sequencing the second power sum from small to large to obtain a minimum power sum;
and the carrier determining submodule with the highest first priority is used for determining the minimum power and the corresponding carrier as the carrier with the highest priority.
10. The apparatus of claim 7, wherein the prioritization module comprises:
an idle time slot number obtaining submodule, configured to obtain the number of idle time slots of each carrier in the target carrier list;
the second sequencing submodule is used for sequencing the idle time slot number of each carrier from large to small to obtain the maximum idle time slot number;
and the carrier determining submodule with the highest second priority is used for determining the carrier corresponding to the maximum idle time slot number as the carrier with the highest priority.
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| CN109687998B (en) * | 2018-12-06 | 2021-10-01 | 西安电子科技大学 | Method for constructing satellite network resource management model for task service |
| CN109862584B (en) * | 2018-12-30 | 2020-10-23 | 中国科学院软件研究所 | Power resource allocation method and multi-beam satellite communication system applying same |
| CN110504987B (en) * | 2019-07-30 | 2020-11-06 | 北京大学 | Resource allocation and access method in open wireless channel |
| CN112311444B (en) * | 2020-10-20 | 2022-08-23 | 陕西航天技术应用研究院有限公司 | Multi-dimensional satellite communication resource dynamic scheduling method, device and system |
| CN115226228B (en) * | 2022-08-30 | 2022-11-22 | 成都星联芯通科技有限公司 | Time slot allocation method, time slot allocation device, master station equipment and storage medium |
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