CN107295667B - Access resource adjusting method and device - Google Patents
Access resource adjusting method and device Download PDFInfo
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- CN107295667B CN107295667B CN201610206600.2A CN201610206600A CN107295667B CN 107295667 B CN107295667 B CN 107295667B CN 201610206600 A CN201610206600 A CN 201610206600A CN 107295667 B CN107295667 B CN 107295667B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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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
- H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
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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
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
Abstract
The embodiment of the invention discloses an access resource adjusting method, which comprises the following steps: acquiring the channel collision rate in a preset time period according to the channel idle ratio and the channel error rate in the preset time period; acquiring the duty ratio of the current signaling access resource in the system access resource; and adjusting the signaling access resource allocated to the terminal according to the channel collision rate and the duty ratio of the current signaling access resource in the system access resource. The method can dynamically adjust the signaling access resources allocated to the terminal, so that the signaling access resources allocated to the terminal by the host station are applicable to different application scenes, thereby improving the performance of the communication system. Further, the embodiment of the invention also discloses an access resource adjusting device.
Description
Technical Field
The present invention relates to wireless communication technologies in the field of satellite communications, and in particular, to a method and an apparatus for adjusting access resources.
Background
In a satellite communication system, a master station periodically transmits a super frame structure table (SCT, superframe Composition Table) to all terminals in the system in a broadcast form, and then the terminals access the satellite communication system according to the duty ratio of signaling access resources in the super frame structure table in the system access resources, so as to communicate with the master station. The system access resource is an access resource of a reverse link of the satellite communication system, and comprises an information access resource and a signaling access resource, wherein the information access resource is used for transmitting signals required by a user, such as a voice signal when the user calls and a data packet signal when the user accesses the Internet; the signaling access resources are signals for transmitting control circuits, which are not normally directly needed by the user.
Currently, the signaling access resources allocated to the terminal by the master station are fixed, but the fixed signaling access resources are often not applicable to all communication states in the satellite communication system. For example, the maximum number of terminal accesses supported by a certain satellite communication system is 500, in order to ensure that 500 terminals can access the system simultaneously, the ratio of the signaling access resource allocated to the terminal by the master station in the system access resource is 10%, and then the terminal uses 10% as the signaling access resource in the system access resource to access the system. Then, the terminal enters a normal operation state, when the terminal is in the normal operation state, the signaling access resource which is required to be occupied is very small, and at the moment, the terminal can meet the normal communication with the master station only by taking 5% of the signaling access resource as the duty ratio of the signaling access resource in the system access resource. However, since the duty ratio of the signaling access resource allocated to the terminal by the master station is fixed in the system access resource, the terminal still communicates with the master station by taking 10% as the duty ratio of the signaling access resource in the system access resource, thereby causing the waste of the signaling access resource.
Disclosure of Invention
In order to solve the above technical problems, embodiments of the present invention are expected to provide an access resource adjustment method and apparatus, which can dynamically adjust signaling access resources allocated to a terminal, so that signaling access resources allocated to the terminal by a host station are applicable to different application scenarios, thereby improving performance of a communication system.
The technical scheme of the invention is realized as follows:
an aspect of the present invention provides a method for adjusting access resources, including:
acquiring the channel collision rate in a preset time period according to the channel idle ratio and the channel error rate in the preset time period;
acquiring the duty ratio of the current signaling access resource in the system access resource;
and adjusting the signaling access resource allocated to the terminal according to the channel collision rate and the duty ratio of the current signaling access resource in the system access resource.
Optionally, the adjusting the signaling access resource allocated to the terminal according to the channel collision rate and the duty ratio of the current signaling access resource in the system access resource includes:
and when the channel collision rate is greater than or equal to a first threshold value and the duty ratio of the current signaling access resource in the system access resource is less than or equal to a second threshold value, adjusting the duty ratio of the signaling access resource allocated to the terminal in the system access resource to be a first duty ratio, wherein the first duty ratio is greater than the duty ratio of the current signaling access resource in the system access resource.
Optionally, the adjusting the signaling access resource allocated to the terminal according to the channel collision rate and the duty ratio of the current signaling access resource in the system access resource includes:
when the channel collision rate is smaller than or equal to a third threshold value and the duty ratio of the current signaling access resource in the system access resource is larger than or equal to a fourth threshold value, adjusting the duty ratio of the signaling access resource allocated to the terminal in the system access resource to a second duty ratio, wherein the second duty ratio is smaller than the duty ratio of the current signaling access resource in the system access resource;
wherein the third threshold is greater than the first threshold; the fourth threshold is less than the second threshold.
Optionally, the obtaining the channel collision rate in the preset time period according to the channel idle ratio and the channel error rate in the preset time period includes:
according to the formula (1), obtaining the channel collision rate in a preset time period;
the formula (1) is: c=e (1-D),
wherein C is the channel collision rate, E is the channel error rate, and D is the channel idle ratio.
Optionally, before the acquiring the duty ratio of the current signaling access resource to the system access resource, the method further includes:
storing the duty ratio of the signaling access resource allocated to the terminal by the master station at the last time in the system access resource;
the obtaining the duty ratio of the current signaling access resource to the system access resource comprises the following steps:
and acquiring the duty ratio of the signaling access resource allocated to the terminal by the last master station in the system access resource, and taking the duty ratio of the current signaling access resource in the system access resource as the duty ratio of the signaling access resource.
Another aspect of the embodiment of the present invention provides an access resource adjustment device, including:
the first acquisition unit is used for acquiring the channel collision rate in the preset time period according to the channel idle ratio and the channel error rate in the preset time period;
a second obtaining unit, configured to obtain a duty ratio of a current signaling access resource in a system access resource;
and the adjusting unit is used for adjusting the signaling access resource allocated to the terminal according to the channel collision rate and the duty ratio of the current signaling access resource in the system access resource.
Optionally, the adjusting unit is specifically configured to:
and when the channel collision rate is greater than or equal to a first threshold value and the duty ratio of the current signaling access resource in the system access resource is less than or equal to a second threshold value, adjusting the duty ratio of the signaling access resource allocated to the terminal in the system access resource to be a first duty ratio, wherein the first duty ratio is greater than the duty ratio of the current signaling access resource in the system access resource.
Optionally, the adjusting unit is specifically configured to:
when the channel collision rate is smaller than or equal to a third threshold value and the duty ratio of the current signaling access resource in the system access resource is larger than or equal to a fourth threshold value, adjusting the duty ratio of the signaling access resource allocated to the terminal in the system access resource to a second duty ratio, wherein the second duty ratio is smaller than the duty ratio of the current signaling access resource in the system access resource;
wherein the third threshold is greater than the first threshold; the fourth threshold is less than the second threshold.
Optionally, the first obtaining unit is specifically configured to:
according to the formula (1), obtaining the channel collision rate in a preset time period;
the formula (1) is: c=e (1-D),
wherein C is the channel collision rate, E is the channel error rate, and D is the channel idle ratio.
Optionally, the apparatus further includes:
the storage unit is used for storing the duty ratio of the signaling access resource allocated to the terminal by the master station at the last time in the system access resource;
the second acquisition unit is specifically configured to:
and acquiring the duty ratio of the signaling access resource allocated to the terminal by the last master station in the system access resource, and taking the duty ratio of the current signaling access resource in the system access resource as the duty ratio of the signaling access resource.
The embodiment of the invention provides a method and a device for adjusting access resources, comprising the following steps: acquiring the channel collision rate in a preset time period according to the channel idle ratio and the channel error rate in the preset time period; acquiring the duty ratio of the current signaling access resource in the system access resource; and adjusting the signaling access resource allocated to the terminal according to the channel collision rate and the duty ratio of the current signaling access resource in the system access resource. Compared with the prior art, the master station dynamically adjusts the signaling access resources allocated to the terminal through the channel collision rate and the duty ratio of the current signaling access resources in the system access resources, so that the adjusted signaling access resources can be suitable for different application scenes, and the phenomenon that the terminal cannot access the system or the signaling access resources are wasted due to the fact that the fixed signaling access resources are allocated to the terminal can be avoided, and therefore the performance of the communication system is improved.
Drawings
Fig. 1 is a schematic flow chart 1 of an access resource adjustment method according to an embodiment of the present invention;
fig. 2 is a flow chart diagram 2 of an access resource adjustment method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram 1 of an access resource adjustment device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram 2 of an access resource adjustment device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1
The embodiment of the invention provides an access resource adjusting method which is applied to a master station. In practical applications, a satellite communication system generally has at least one channel, and the present embodiment of the present invention is illustrated by taking a current channel as an example. As shown in fig. 1, the access resource adjustment method includes:
and step 101, obtaining the channel collision rate in the preset time period according to the channel idle ratio and the channel error rate in the preset time period.
Here, the channel idle ratio in the preset time period is the duty ratio of the accumulated duration of idle channels in the preset time period, and reflects the utilization condition of the channels. The channel error rate in the preset time period reflects the transmission accuracy of the code stream sent by the terminal to the master station in the preset time period. The channel collision rate reflects the probability of collision of the code stream during channel transmission.
For example, when the terminal transmits the code stream to the master station in the preset time period, the code stream is discontinuous in time, that is, there is a time when the terminal will not transmit the code stream channel to the master station in the idle state in the preset time period. Preferably, the difference between the duration of the preset time period and the accumulated duration of the code stream sent to the master station by the terminal in the preset time period can be calculated and used as the accumulated duration of the idle state of the channel. Therefore, the channel idle ratio D in the preset period may be obtained according to the formula (2), where the formula (2) is: d= (t 2-t 1)/t 2. Wherein t1 is the accumulated time length of the code stream sent to the master station by the terminal in the preset time period, and t2 is the time length of the preset time period.
Then, according to formula (3), the channel error rate E in a preset time period is obtained, wherein formula (3) is as follows: e=l1/L2, where L1 is the length of the code stream in which the signal-to-noise ratio is less than or equal to the quality threshold, and L2 is the total length of the code stream. It should be noted that, the signal-to-noise ratio may be obtained by a method known in the art, which is not described herein again; the quality threshold may be set according to a specific situation, which is not limited in the embodiment of the present invention.
Then, according to formula (1), the channel collision rate C in a preset time period is obtained, wherein the formula (1) is as follows: c=e (1-D), where E is the channel error rate in the preset time period and D is the channel idle ratio in the preset time period.
It should be noted that, in practical application, the preset time period may be set according to specific situations, which is not limited in the embodiment of the present invention.
For example, when the primary station stores the duty ratio of the signaling access resource allocated to the terminal by the primary station in the system access resource, the duty ratio of the signaling access resource in the system access resource can be directly obtained as the duty ratio of the current signaling access resource in the system access resource. When the primary station does not store the duty ratio of the signaling access resource allocated to the terminal by the primary station at the system access resource last time, the primary station can firstly receive a section of code stream sent to the primary station by the terminal, wherein the code stream comprises signaling messages and information messages, the length of the signaling messages corresponds to the signaling access resource, and the length of the information messages corresponds to the information access resource, so that the duty ratio of the length of the signaling messages at the total length of the code stream is the duty ratio of the current signaling access resource at the system access resource.
And step 103, adjusting the signaling access resources allocated to the terminal according to the channel collision rate and the duty ratio of the current signaling access resources in the system access resources.
For example, when the channel collision rate is greater than or equal to the first threshold, it is indicated that the channel collision rate is higher, and the code stream is easy to collide in the transmission process, so that the code stream transmission error or the code stream transmission delay is larger, and at this time, the terminal needs to increase the signaling access resource to reduce the channel collision rate. Meanwhile, the current duty ratio of the signaling access resource in the system access resource is smaller than or equal to the second threshold value, which means that the signaling access resource allocated to the terminal by the master station is smaller, and it is likely that all terminals cannot access the system at the same time, so that the master station also needs to increase the signaling access resource allocated to the terminal. In summary, when the channel collision rate is greater than or equal to the first threshold, and the duty ratio of the current signaling access resource in the system access resource is less than or equal to the second threshold, the master station may increase the signaling access resource allocated to the terminal.
When the channel collision rate is smaller than or equal to the third threshold value, the channel collision rate is lower, the code stream is not easy to collide in the transmission process, and the master station can properly reduce the signaling access resources allocated to the terminal. Meanwhile, the current duty ratio of the signaling access resource in the system access resource is larger than or equal to the fourth threshold value, which indicates that the signaling access resource allocated to the terminal by the master station is larger, and the signaling access resource is generally wasted. In summary, when the channel collision rate is less than or equal to the third threshold and the duty ratio of the current signaling access resource in the system access resource is greater than or equal to the fourth threshold, the master station should reduce the signaling access resource allocated to the terminal.
In practical applications, the first threshold, the second threshold, the third threshold, and the fourth threshold may be set according to specific situations, which is not limited in the embodiment of the present invention. Wherein the third threshold is greater than the first threshold; the fourth threshold is less than the second threshold.
In this way, the master station dynamically adjusts the signaling access resources allocated to the terminal through the channel collision rate and the duty ratio of the current signaling access resources in the system access resources, so that the adjusted signaling access resources can be suitable for different application scenarios, and the phenomenon that the terminal cannot access the system or the signaling access resources are wasted due to the fact that the fixed signaling access resources are allocated to the terminal can be avoided, thereby improving the performance of the communication system.
Optionally, when adjusting the signaling access resource allocated to the terminal according to the channel collision rate and the duty ratio of the current signaling access resource in the system access resource, if the channel collision rate is greater than or equal to a first threshold and the duty ratio of the current signaling access resource in the system access resource is less than or equal to a second threshold, the duty ratio of the signaling access resource allocated to the terminal in the system access resource is adjusted to be a first duty ratio, and the first duty ratio is greater than the duty ratio of the current signaling access resource in the system access resource.
In practical application, the signaling access resource allocated to the terminal can be adjusted by adjusting the duty ratio of the signaling access resource allocated to the terminal in the system access resource; when the signaling access resource allocated to the terminal needs to be increased, the duty ratio of the signaling access resource allocated to the terminal in the system access resource can be increased; when the signaling access resources allocated to the terminal need to be reduced, the duty ratio of the signaling access resources allocated to the terminal in the system access resources can be reduced.
For example, when the channel collision rate is greater than or equal to a first threshold and the current duty cycle of the signaling access resources in the system access resources is less than or equal to a second threshold, the primary station needs to increase the signaling access resources allocated to the terminal. At this time, the primary station may adjust the duty ratio of the signaling access resource allocated to the terminal in the system access resource to a first duty ratio, and since the first duty ratio is greater than the duty ratio of the current signaling access resource in the system access resource, the signaling access resource allocated to the terminal is increased.
Optionally, when adjusting the signaling access resource allocated to the terminal according to the channel collision rate and the duty ratio of the current signaling access resource in the system access resource, if the channel collision rate is smaller than or equal to a third threshold value and the duty ratio of the current signaling access resource in the system access resource is greater than or equal to a fourth threshold value, adjusting the duty ratio of the signaling access resource allocated to the terminal in the system access resource to be a second duty ratio, where the second duty ratio is smaller than the duty ratio of the current signaling access resource in the system access resource; wherein the third threshold is greater than the first threshold; the fourth threshold is less than the second threshold.
For example, when the channel collision rate is less than or equal to the third threshold and the duty cycle of the current signaling access resource in the system access resource is greater than or equal to the fourth threshold, the master station needs to reduce the signaling access resource allocated to the terminal. At this time, the primary station may adjust the duty ratio of the signaling access resource allocated to the terminal in the system access resource to a second duty ratio, and since the second duty ratio is smaller than the duty ratio of the current signaling access resource in the system access resource, the signaling access resource allocated to the terminal is reduced.
Optionally, before the current duty ratio of the signaling access resource to the system access resource is obtained, the duty ratio of the signaling access resource allocated to the terminal by the master station at the last time to the system access resource may be stored first. Then, when the duty ratio of the current signaling access resource in the system access resource is obtained, the duty ratio of the signaling access resource allocated to the terminal by the master station in the last time in the system access resource can be obtained and used as the duty ratio of the current signaling access resource in the system access resource.
For example, the master station may periodically send the ratio of the signaling access resource to the system access resource to the terminal, so that the terminal may adjust the signaling access resource according to the ratio. For example, the master station may periodically send a superframe structure table to the terminal, where the superframe structure table may include a ratio of signaling access resources to system access resources. Therefore, when the master station transmits the superframe structure table to the terminal each time, the duty ratio of the access resource in the superframe structure table in the system access resource can be sequentially stored in the duty ratio record of the master station. When the duty ratio of the current signaling access resource in the system access resource needs to be acquired, the duty ratio of the signaling access resource in the system access resource last time can be acquired in the duty ratio record and used as the duty ratio of the current signaling access resource in the system access resource.
The embodiment of the invention provides an access resource adjusting method, which comprises the following steps: acquiring the channel collision rate in a preset time period according to the channel idle ratio and the channel error rate in the preset time period; acquiring the duty ratio of the current signaling access resource in the system access resource; and adjusting the signaling access resource allocated to the terminal according to the channel collision rate and the duty ratio of the current signaling access resource in the system access resource. Compared with the prior art, the master station dynamically adjusts the signaling access resources allocated to the terminal through the channel collision rate and the duty ratio of the current signaling access resources in the system access resources, so that the adjusted signaling access resources can be suitable for different application scenes, and the phenomenon that the terminal cannot access the system or the signaling access resources are wasted due to the fact that the fixed signaling access resources are allocated to the terminal can be avoided, and therefore the performance of the communication system is improved.
Example two
The embodiment of the invention provides an access resource adjusting method which is applied to a master station, wherein in practical application, at least one channel is usually present in a satellite communication system. As shown in fig. 2, the access resource adjustment method includes:
For example, the terminal may send the code stream to the master station discontinuously in time, so the master station may record the duration of receiving the code stream of the terminal and the length of the code stream each time in a preset period. Then, calculating the sum of the time lengths of all the receiving terminal code streams recorded in the preset time period as the accumulated time length of the receiving terminal code streams in the preset time period; and calculating the sum of all the code stream lengths recorded in the preset time period as the total length of the code stream in the preset time period.
In practical application, the preset time period may be set according to specific situations, which is not limited in the embodiment of the present invention.
The channel idle ratio D in the preset time period can be obtained according to the formula (2), where the formula (2) is: d= (t 2-t 1)/t 2, where t1 is the accumulated duration of the code stream sent by the terminal to the master station in the preset time period, and t2 is the duration of the preset time period.
For example, the channel error rate E in the preset period may be obtained according to the formula (3), where the formula (3) is: e=l1/L2, where L1 is the length of the code stream in which the signal-to-noise ratio is less than or equal to the quality threshold, and L2 is the total length of the code stream.
For example, the channel collision rate C in the preset period may be obtained according to the formula (1), where the formula (1) is: c=e (1-D), where E is the channel error rate in the preset time period and D is the channel idle ratio in the preset time period.
For example, when the primary station stores the duty ratio of the signaling access resource allocated to the terminal by the primary station in the system access resource, the duty ratio of the signaling access resource in the system access resource can be directly obtained as the duty ratio of the current signaling access resource in the system access resource.
It should be noted that, the embodiment of the present invention provides two signaling access resource adjustment schemes, namely, an increase signaling access resource adjustment scheme and a decrease signaling access resource adjustment scheme. When the condition of increasing the signaling access resource adjustment scheme is met, the master station needs to increase the signaling access resource allocated to the terminal; when meeting the condition of reducing the signaling access resource adjustment scheme, the master station needs to reduce the signaling access resources allocated to the terminal; when the two conditions are not met, the master station only needs to keep the signaling access resource currently allocated to the terminal. Therefore, after the duty ratio of the current signaling access resource in the system access resource is obtained, it is also required to determine whether the two conditions are met. Step 206 and step 210 are the initial steps of determining whether the two conditions are met, respectively.
Specifically, when the channel collision rate is greater than or equal to the first threshold, it is indicated that the channel collision rate is higher, and the terminal needs to increase the signaling access resource to reduce the channel collision rate. However, only because the collision rate of the channel is high, it is determined that the signaling access resources allocated to the terminal by the master station need to be increased, which is often not comprehensive enough and easily causes erroneous judgment. For example, although the channel collision rate is higher, when the signaling access resources allocated to the terminal by the master station are already more, it is indicated that the higher channel collision rate is not caused by insufficient signaling access resources at this time, so even if the signaling access resources are increased, the higher channel collision rate still cannot be relieved, but the channel utilization rate is reduced, and the performance of the system is further reduced. Therefore, when the channel collision rate is greater than or equal to the first threshold, it is further necessary to determine the signaling access resource allocated to the terminal by the current master station.
Specifically, the duty ratio of the signaling access resource in the system access resource reflects the condition of the signaling access resource distributed to the terminal by the master station; if the occupation of the current signaling access resource in the system access resource is larger, the current main station allocates more signaling access resources to the terminal; if the occupation of the current signaling access resource in the system access resource is smaller, the current signaling access resource allocated to the terminal by the master station is less. Therefore, if the duty ratio of the current signaling access resource in the system access resource is smaller than or equal to the second threshold value, the signaling access resource allocated to the terminal by the current master station is less.
Therefore, when the channel collision rate is greater than or equal to the first threshold value, and the duty ratio of the current signaling access resource in the system access resource is less than or equal to the second threshold value, the channel collision rate is higher, meanwhile, the signaling access resource allocated to the terminal by the current master station is less, and the master station needs to increase the signaling access resource allocated to the terminal at the moment. For example, a first superframe structure table for increasing signaling access resources allocated to a terminal may be generated.
Here, the first superframe structure table includes a first duty ratio, where the first duty ratio is greater than a duty ratio of a current signaling access resource in a system access resource.
In practical applications, in order to increase the signaling access resources of the terminal, the primary station may first send a first superframe structure table including a first duty cycle to the terminal. The terminal then accesses the system and communicates with the master station in accordance with the first duty cycle in the first superframe structure table. The first duty ratio is larger than the duty ratio of the current signaling access resource of the terminal in the system access resource, so that the signaling access resource of the terminal is increased. And further, the situation that the terminal can not access the system when the channel collision rate is larger than or equal to a first threshold value and the duty ratio of the current signaling access resource in the system access resource is smaller than or equal to a second threshold value is avoided.
Specifically, when the channel collision rate is less than or equal to the third threshold, it indicates that the channel collision rate is lower, and the terminal can properly reduce the signaling access resource. However, only the channel collision rate is low, it is determined that the signaling access resources allocated to the terminal by the master station need to be reduced, which is often not comprehensive enough, and misjudgment is easy to be caused. For example, when the signaling access resources allocated to the terminal by the master station are already small although the channel collision rate is low, if the signaling access resources allocated to the terminal are reduced at this time, it may happen that all terminals cannot access the system at the same time due to too few signaling access resources. Therefore, when the channel collision rate is less than or equal to the third threshold, it is further necessary to determine the signaling access resource allocated to the terminal by the current master station.
Specifically, if the duty ratio of the current signaling access resource in the system access resource is greater than or equal to the fourth threshold, the signaling access resource allocated to the terminal by the current master station is more. Therefore, when the channel collision rate is smaller than or equal to the third threshold value and the duty ratio of the current signaling access resource in the system access resource is larger than or equal to the fourth threshold value, the channel collision rate is lower, meanwhile, the current signaling access resource allocated to the terminal by the master station is more, and the signaling access resource allocated to the terminal by the master station can be properly reduced at the moment. For example, a second superframe structure table for reducing signaling access resources allocated to the terminal may be generated.
Here, the second superframe structure table includes a second duty ratio, where the second duty ratio is smaller than a duty ratio of the current signaling access resource in the system access resource.
In practice, in order to reduce the signaling access resources of the terminal, the primary station may first send to the terminal a second superframe structure table including a second duty cycle. The terminal then accesses the system and communicates with the master station in accordance with the second duty cycle in the second superframe structure table. Because the second duty ratio is smaller than the duty ratio of the current signaling access resource of the terminal in the system access resource, the signaling access resource of the terminal is reduced, and the condition of wasting the signaling access resource is avoided.
Here, the third superframe structure table includes a third duty ratio, where the third duty ratio is equal to a duty ratio of the current signaling access resource in the system access resource.
In practical applications, in order to maintain the signaling access resources of the terminal, the primary station may first send a third superframe structure table including a third duty cycle to the terminal. The terminal then accesses the system and communicates with the master station in accordance with a third duty cycle in a third superframe structure table. The third duty cycle is equal to the duty cycle of the current signaling access resource of the terminal in the system access resource, so that the signaling access resource of the terminal is maintained.
It should be noted that, the sequence of the steps of the access resource adjustment method provided in the embodiment of the present invention may be appropriately adjusted, the steps may also be correspondingly increased or decreased according to the situation, and any method that is easily conceivable to be changed by those skilled in the art within the technical scope of the present disclosure should be covered within the protection scope of the present disclosure, so that no further description is provided.
Compared with the prior art, the embodiment of the invention provides an access resource adjustment method, which dynamically adjusts the signaling access resource allocated to the terminal through the channel collision rate and the duty ratio of the current signaling access resource in the system access resource, so that the adjusted signaling access resource can be suitable for different application scenes, and the phenomenon that the terminal cannot access the system or the signaling access resource is wasted due to the allocation of the fixed signaling access resource to the terminal can be avoided, thereby improving the performance of the communication system.
Example III
The embodiment of the invention provides an access resource adjusting device 30, as shown in fig. 3, the device 30 includes:
a first obtaining unit 301, configured to obtain a channel collision rate in a preset time period according to a channel idle ratio and a channel error rate in the preset time period;
a second obtaining unit 302, configured to obtain a duty ratio of a current signaling access resource in a system access resource;
and an adjusting unit 303, configured to adjust the signaling access resource allocated to the terminal according to the channel collision rate and the duty ratio of the current signaling access resource in the system access resource.
In this way, the master station dynamically adjusts the signaling access resources allocated to the terminal through the channel collision rate and the duty ratio of the current signaling access resources in the system access resources, so that the adjusted signaling access resources can be suitable for different application scenarios, and the phenomenon that the terminal cannot access the system or the signaling access resources are wasted due to the fact that the fixed signaling access resources are allocated to the terminal can be avoided, thereby improving the performance of the communication system.
Optionally, the adjusting unit 303 is specifically configured to: and when the channel collision rate is greater than or equal to a first threshold value and the duty ratio of the current signaling access resource in the system access resource is less than or equal to a second threshold value, adjusting the duty ratio of the signaling access resource allocated to the terminal in the system access resource to be a first duty ratio, wherein the first duty ratio is greater than the duty ratio of the current signaling access resource in the system access resource.
Optionally, the adjusting unit 303 is specifically configured to: when the channel collision rate is smaller than or equal to a third threshold value and the duty ratio of the current signaling access resource in the system access resource is larger than or equal to a fourth threshold value, adjusting the duty ratio of the signaling access resource allocated to the terminal in the system access resource to a second duty ratio, wherein the second duty ratio is smaller than the duty ratio of the current signaling access resource in the system access resource; wherein the third threshold is greater than the first threshold; the fourth threshold is less than the second threshold.
Optionally, the first obtaining unit 301 is specifically configured to: according to the formula (1), obtaining the channel collision rate in a preset time period; the formula (1) is: c=e (1-D), where C is the channel collision rate, E is the channel error rate, and D is the channel idle ratio.
Optionally, as shown in fig. 4, the apparatus 30 further includes: a storage unit 304, configured to store a duty ratio of a signaling access resource allocated to the terminal by the master station at the last time in a system access resource; the second obtaining unit 302 is specifically configured to: and acquiring the duty ratio of the signaling access resource allocated to the terminal by the last master station in the system access resource, and taking the duty ratio of the current signaling access resource in the system access resource as the duty ratio of the signaling access resource.
It should be noted that, first, it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the apparatus and unit described above may refer to the corresponding process in the foregoing method embodiment, which is not repeated herein.
Second, in practical applications, the first acquiring unit 301, the second acquiring unit 302, the adjusting unit 303, and the storage unit 304 may be implemented by a central processing unit (Central Processing Unit, CPU), a microprocessor (Micro Processor Unit, MPU), a digital signal processor (Digital Signal Processor, DSP), or a field programmable gate array (Field Programmable Gate Array, FPGA) located in the device 30.
The embodiment of the invention provides an access resource adjusting device, which comprises: the first acquisition unit is used for acquiring the channel collision rate in the preset time period according to the channel idle ratio and the channel error rate in the preset time period; a second obtaining unit, configured to obtain a duty ratio of a current signaling access resource in a system access resource; and the adjusting unit is used for adjusting the signaling access resource allocated to the terminal according to the channel collision rate and the duty ratio of the current signaling access resource in the system access resource. Compared with the prior art, the master station dynamically adjusts the signaling access resources allocated to the terminal through the channel collision rate and the duty ratio of the current signaling access resources in the system access resources, so that the adjusted signaling access resources can be suitable for different application scenes, and the phenomenon that the terminal cannot access the system or the signaling access resources are wasted due to the fact that the fixed signaling access resources are allocated to the terminal can be avoided, and therefore the performance of the communication system is improved.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, 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, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, 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 apparatus 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 apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention.
Claims (8)
1. An access resource adjustment method, the method comprising:
according to the formula (1), obtaining the channel collision rate in a preset time period;
the formula (1) is: c=e (1-D),
wherein C is the channel collision rate, E is the channel error rate, and D is the channel idle ratio;
acquiring the duty ratio of the current signaling access resource in the system access resource;
and adjusting the signaling access resource allocated to the terminal according to the channel collision rate and the duty ratio of the current signaling access resource in the system access resource.
2. The method of claim 1, wherein adjusting the signaling access resources allocated to the terminal based on the channel collision rate and the current signaling access resource's duty cycle at system access resources comprises:
and when the channel collision rate is greater than or equal to a first threshold value and the duty ratio of the current signaling access resource in the system access resource is less than or equal to a second threshold value, adjusting the duty ratio of the signaling access resource allocated to the terminal in the system access resource to be a first duty ratio, wherein the first duty ratio is greater than the duty ratio of the current signaling access resource in the system access resource.
3. The method of claim 2, wherein adjusting the signaling access resources allocated to the terminal based on the channel collision rate and the current signaling access resource's duty cycle at system access resources comprises:
when the channel collision rate is smaller than or equal to a third threshold value and the duty ratio of the current signaling access resource in the system access resource is larger than or equal to a fourth threshold value, adjusting the duty ratio of the signaling access resource allocated to the terminal in the system access resource to a second duty ratio, wherein the second duty ratio is smaller than the duty ratio of the current signaling access resource in the system access resource;
wherein the third threshold is greater than the first threshold; the fourth threshold is less than the second threshold.
4. A method according to any one of claim 1 to 3,
before the acquiring the duty ratio of the current signaling access resource to the system access resource, the method further comprises:
storing the duty ratio of the signaling access resource allocated to the terminal by the master station at the last time in the system access resource;
the obtaining the duty ratio of the current signaling access resource to the system access resource comprises the following steps:
and acquiring the duty ratio of the signaling access resource allocated to the terminal by the last master station in the system access resource, and taking the duty ratio of the current signaling access resource in the system access resource as the duty ratio of the signaling access resource.
5. An access resource adjustment apparatus, the apparatus comprising:
the first acquisition unit is used for acquiring the channel collision rate in a preset time period according to the formula (1);
the formula (1) is: c=e (1-D),
wherein C is the channel collision rate, E is the channel error rate, and D is the channel idle ratio;
a second obtaining unit, configured to obtain a duty ratio of a current signaling access resource in a system access resource;
and the adjusting unit is used for adjusting the signaling access resource allocated to the terminal according to the channel collision rate and the duty ratio of the current signaling access resource in the system access resource.
6. The device according to claim 5, wherein the adjusting unit is specifically configured to:
and when the channel collision rate is greater than or equal to a first threshold value and the duty ratio of the current signaling access resource in the system access resource is less than or equal to a second threshold value, adjusting the duty ratio of the signaling access resource allocated to the terminal in the system access resource to be a first duty ratio, wherein the first duty ratio is greater than the duty ratio of the current signaling access resource in the system access resource.
7. The device according to claim 6, wherein the adjusting unit is specifically configured to:
when the channel collision rate is smaller than or equal to a third threshold value and the duty ratio of the current signaling access resource in the system access resource is larger than or equal to a fourth threshold value, adjusting the duty ratio of the signaling access resource allocated to the terminal in the system access resource to a second duty ratio, wherein the second duty ratio is smaller than the duty ratio of the current signaling access resource in the system access resource;
wherein the third threshold is greater than the first threshold; the fourth threshold is less than the second threshold.
8. The apparatus according to any one of claims 5 to 7, further comprising:
the storage unit is used for storing the duty ratio of the signaling access resource allocated to the terminal by the master station at the last time in the system access resource;
the second acquisition unit is specifically configured to:
and acquiring the duty ratio of the signaling access resource allocated to the terminal by the last master station in the system access resource, and taking the duty ratio of the current signaling access resource in the system access resource as the duty ratio of the signaling access resource.
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| CN201610206600.2A CN107295667B (en) | 2016-04-05 | 2016-04-05 | Access resource adjusting method and device |
| PCT/CN2016/102475 WO2017173804A1 (en) | 2016-04-05 | 2016-10-18 | Access resource adjustment method and device |
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| CN113543218B (en) * | 2021-07-20 | 2023-06-16 | 四川安迪科技实业有限公司 | Method and device for splitting super-long Time Division Multiple Access (TDMA) signaling message |
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| CN101938770A (en) * | 2010-09-20 | 2011-01-05 | 南京邮电大学 | Wireless network maximum retransmission times optimization method based on network channel state |
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| US5572530A (en) * | 1994-10-07 | 1996-11-05 | Comsat Corporation | Technique for efficient integration of integrated services digital network (ISDN) into satellite system |
| US8885452B2 (en) * | 2004-10-11 | 2014-11-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and system of communication over channels of diverse channel characteristics |
| CN102883374B (en) * | 2012-10-15 | 2015-04-22 | 航天恒星科技有限公司 | Resource distribution method for satellite communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101312589A (en) * | 2007-05-21 | 2008-11-26 | 中兴通讯股份有限公司 | Method for dynamic regulating repeated cycle of following special physical channel |
| CN101938770A (en) * | 2010-09-20 | 2011-01-05 | 南京邮电大学 | Wireless network maximum retransmission times optimization method based on network channel state |
| CN103650564A (en) * | 2013-07-05 | 2014-03-19 | 华为技术有限公司 | Common cell resource allocation method and equipment thereof |
| CN103595461A (en) * | 2013-10-17 | 2014-02-19 | 航天恒星科技有限公司 | Super-large scale VSAT system frame structure and resource allocation method |
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