CN111954306B - Hybrid transmission method and system based on time slot and packet scheduling - Google Patents
Hybrid transmission method and system based on time slot and packet scheduling Download PDFInfo
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- CN111954306B CN111954306B CN202010653037.XA CN202010653037A CN111954306B CN 111954306 B CN111954306 B CN 111954306B CN 202010653037 A CN202010653037 A CN 202010653037A CN 111954306 B CN111954306 B CN 111954306B
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 241000854291 Dianthus carthusianorum Species 0.000 claims description 16
- 230000006735 deficit Effects 0.000 claims description 8
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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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
- H04W72/12—Wireless traffic scheduling
- H04W72/1221—Wireless traffic scheduling based on age of data to be sent
Abstract
The invention provides a mixed transmission method based on time slot and packet scheduling, wherein the mixed transmission method comprises the following steps: selecting one or more users on the channel; selecting a corresponding modulation format according to the one or more users; and carrying out scheduling forwarding of user services of the one or more users according to the modulation format. The invention also provides a hybrid transmission system of the method. The invention can carry out different dispatching forwarding operations according to different user services, so that the user services can be transmitted in time, and the high-efficiency operation of the work is ensured.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a hybrid transmission method and system based on time slot and packet scheduling.
Background
In modern society, useful information can be obtained through transmission among signals, and information is transmitted through data transmission among signals, so that social life is facilitated, and social development is promoted.
At present, the timely transmission of user business is still a topic of general interest, and different transmission modes are interesting.
The invention provides a hybrid transmission method and a system based on time slot and packet scheduling, which enable user service to be transmitted in time and ensure efficient operation.
Disclosure of Invention
Object of the invention
In order to overcome at least one defect in the prior art, the invention provides a hybrid transmission method and a system based on time slot and packet scheduling, which can perform different scheduling forwarding operations according to different user services, so that the user services can be transmitted in time, and the efficient performance of work is ensured.
(II) technical scheme
As a first aspect of the present invention, the present invention discloses a hybrid transmission method based on slot and packet scheduling, comprising the steps of:
selecting one or more users on the channel;
selecting a corresponding modulation format according to the one or more users;
and carrying out scheduling forwarding of user services of the one or more users according to the modulation format.
In a possible implementation manner, the one or more users are the users selected according to the channel gain and the signal-to-leakage-noise ratio of the users; the channel gain is represented by channel state information of each user; the signal-to-noise-and-leakage ratio is obtained by dividing the equivalent channel gain of a user after precoding by the sum of the received noise of the user and the power of the data leaked to a plurality of users.
In a possible implementation, the modulation format of the one or more users is selected by a modulation instruction.
In a possible implementation, the user traffic comprises delay sensitive traffic and/or high priority traffic; and the downlink channel forwards the delay sensitive service and/or the high-priority service selection channel.
In a possible implementation manner, the user service includes other services, and the other services are forwarded in a TDMA manner.
As a second aspect of the present invention, the present invention discloses a hybrid transmission system based on slot and packet scheduling, comprising:
a user selection module for selecting one or more users on the channel;
a scheduling format selection module, configured to select a corresponding modulation format according to the one or more users;
and the dispatch forwarding module is used for carrying out dispatch forwarding of the user service of the one or more users according to the modulation format.
In a possible implementation manner, the one or more users are the users selected according to the channel gain and the signal-to-leakage-noise ratio of the users; the channel gain is represented by channel state information of each user; the signal-to-noise-and-leakage ratio is obtained by dividing the equivalent channel gain of a user after precoding by the sum of the received noise of the user and the power of the data leaked to a plurality of users.
In a possible implementation, the modulation format of the one or more users is selected by a modulation instruction.
In a possible implementation, the user traffic comprises delay sensitive traffic and/or high priority traffic; and the downlink channel forwards the delay sensitive service and/or the high-priority service selection channel.
In a possible implementation manner, the user service includes other services, and the other services are forwarded in a TDMA manner.
(III) beneficial effects
The invention provides a mixed transmission method and a system based on time slot and packet scheduling, which are characterized in that one or more users on a channel are selected firstly, and then corresponding modulation formats are selected according to the one or more users, so that the scheduling forwarding of user services of the one or more users is performed according to the modulation formats. Different scheduling forwarding operations can be performed according to different user services, so that the user services can be transmitted in time, and efficient performance of work is ensured.
Drawings
The embodiments described below with reference to the drawings are exemplary and intended to illustrate and describe the invention and should not be construed as limiting the scope of the invention.
Fig. 1 is a flowchart of a hybrid transmission method based on time slot and packet scheduling according to the present invention.
Fig. 2 is a schematic structural diagram of a hybrid transmission system based on time slot and packet scheduling according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention become more apparent, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention.
It should be noted that: in the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention, and the embodiments and features of the embodiments in this application may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.
A first embodiment of a hybrid transmission method based on slot and packet scheduling according to the present invention is described in detail below with reference to fig. 1. As shown in fig. 1, the hybrid transmission method provided in this embodiment mainly includes: step 1, step 2 and step 3.
Step 1, one or more users on the channel are selected.
Step 2, selecting a corresponding modulation format according to the one or more users; the invention has a plurality of modulation formats, and can perform switching operation of the plurality of modulation formats, and each modulation format in the plurality of modulation formats corresponds to unique characteristic information.
And step 3, scheduling and forwarding the user service of the one or more users according to the modulation format. Firstly, analyzing user services, and carrying out different scheduling forwarding operations according to different user services; the user service which is confirmed to be needed can be subjected to the priority scheduling forwarding operation; so that the receiving and processing of the user service and the like are more timely.
Wherein the one or more users are selected users according to channel gain and signal-to-leakage-noise ratio of the users. The channel gain is represented by channel state information of each user; the acquisition of the channel state information may be estimated using reciprocity of the channel; the obtaining of the channel state information may be estimated at the user equipment; the channel state information of each user may be represented by a channel state information division value of all users. A plurality of users can be selected according to the mode that the channel gains of all users are from large to small;
the signal-to-noise-and-leakage ratio is obtained by dividing the equivalent channel gain of a user after precoding by the sum of the received noise of the user and the power of the data leaked to the users. Q users can be selected from the signal-to-noise ratio of the users according to the sequence from large to small to form a user set; and selecting a user set with the maximum average value as an optimal user set by using the average value of the signal-to-noise ratios corresponding to the users in each user set, wherein one or more users are in the optimal user set. This one or more user selection process allows the present invention to increase the rate of operation while taking into account channel gain and other potential interference by the user.
Wherein the modulation format of the one or more users is selected by a modulation instruction. The modulation command may be a selected modulation format, corresponding characteristic information may be analyzed by the selected modulation format, and when the characteristic information of the selected modulation format accords with certain characteristic information of a plurality of modulation formats, the modulation format is switched to the selected modulation format, so that subsequent work is performed according to the selected modulation format. The characteristic information is expressed by transmission performance, transmission efficiency, transmission impairment, and the like of the modulation format. For example, transmission performance of several modulation formats may be given a value in order from large to small or from small to large in advance; the transmission efficiency of several modulation formats may be given a numerical value in order from large to small or from small to large in advance; transmission impairments of several modulation formats may be given a value in advance in order from large to small or from small to large; the characteristic information of the transmission performance value a, the transmission efficiency value B, and the transmission impairment value C of one modulation format (i.e., the characteristic information of the modulation format) may be expressed as (a, B, C) or p=a+b+c.
If the characteristic information (A, B, C) or P of the selected modulation format S is successfully compared with the characteristic information of the modulation formats, the characteristic information (A, B, C) can be indicated to exist in the characteristic information, namely the modulation format S exists in the modulation formats, and the modulation format can be switched to the modulation format S at the moment; or it may be stated that the characteristic information P exists in the plurality of characteristic information, that is, the modulation format L exists in the plurality of modulation formats, and at this time, the modulation format may be switched to the modulation format L having high similarity with the modulation format S.
Wherein the user services comprise delay sensitive services and/or high priority services; and the downlink channel forwards the delay sensitive service and/or the high-priority service selection channel, and the channel uses the frame as a scheduling unit to perform scheduling forwarding. And selecting the data block of the long frame structure or the short frame structure as a reference to judge, and further determining the long frame structure or the short frame structure to dispatch and forward the delay sensitive service or the high priority service according to the data volume of the delay sensitive service or the high priority service.
The user service comprises other services, and the other services are forwarded in a TDMA mode. The cluster head can be utilized for scheduling and forwarding; time slot resources can be allocated for the other services; the allocation method comprises a fixed method, an exclusive method, an emergency method and a dynamic allocation method. When the cluster head collects the first priority service in other services, selecting an exclusive method to allocate time slot resources; when the cluster head does not collect the first priority service and the second priority service in other services and collects the normal service in other services, a dynamic allocation method is selected to allocate time slot resources; when the cluster head does not collect the first priority service in other services and collects the second priority service, selecting an emergency method to allocate the time slot resources, if the normal service is collected, allocating the residual time slot resources according to a dynamic allocation method, and if the normal service is not collected, allocating the residual time slot resources according to a fixed method.
The invention firstly selects one or more users on a channel, and then selects a corresponding modulation format according to the one or more users, so as to perform scheduling forwarding of user services of the one or more users according to the modulation format. The mixed transmission method based on time slot and packet scheduling can perform different scheduling and forwarding operations according to different user services, so that the user services can be transmitted in time, and the high efficiency of work is ensured.
A first embodiment of a hybrid transmission system based on slot and packet scheduling according to the present invention is described in detail below with reference to fig. 2. As shown in fig. 2, the hybrid transmission system provided in this embodiment mainly includes: the system comprises a user selection module, a scheduling format selection module and a scheduling forwarding module.
And the user selection module is used for selecting one or more users on the channel.
A scheduling format selection module, configured to select a corresponding modulation format according to the one or more users; the invention has a plurality of modulation formats, and can perform switching operation of the plurality of modulation formats, and each modulation format in the plurality of modulation formats corresponds to unique characteristic information.
And the dispatch forwarding module is used for carrying out dispatch forwarding of the user service of the one or more users according to the modulation format. Firstly, analyzing user services, and carrying out different scheduling forwarding operations according to different user services; the user service which is confirmed to be needed can be subjected to the priority scheduling forwarding operation; so that the receiving and processing of the user service and the like are more timely.
Wherein the one or more users are selected users according to channel gain and signal-to-leakage-noise ratio of the users. The channel gain is represented by channel state information of each user; the acquisition of the channel state information may be estimated using reciprocity of the channel; the obtaining of the channel state information may be estimated at the user equipment; the channel state information of each user may be represented by a channel state information division value of all users. A plurality of users can be selected according to the mode that the channel gains of all users are from large to small;
the signal-to-noise-and-leakage ratio is obtained by dividing the equivalent channel gain of a user after precoding by the sum of the received noise of the user and the power of the data leaked to the users. Q users can be selected from the signal-to-noise ratio of the users according to the sequence from large to small to form a user set; and selecting a user set with the maximum average value as an optimal user set by using the average value of the signal-to-noise ratios corresponding to the users in each user set, wherein one or more users are in the optimal user set. This one or more user selection process allows the present invention to increase the rate of operation while taking into account channel gain and other potential interference by the user.
Wherein the modulation format of the one or more users is selected by a modulation instruction. The modulation command may be a selected modulation format, corresponding characteristic information may be analyzed by the selected modulation format, and when the characteristic information of the selected modulation format accords with certain characteristic information of a plurality of modulation formats, the modulation format is switched to the selected modulation format, so that subsequent work is performed according to the selected modulation format. The characteristic information is expressed by transmission performance, transmission efficiency, transmission impairment, and the like of the modulation format. For example, transmission performance of several modulation formats may be given a value in order from large to small or from small to large in advance; the transmission efficiency of several modulation formats may be given a numerical value in order from large to small or from small to large in advance; transmission impairments of several modulation formats may be given a value in advance in order from large to small or from small to large; the characteristic information of the transmission performance value a, the transmission efficiency value B, and the transmission impairment value C of one modulation format (i.e., the characteristic information of the modulation format) may be expressed as (a, B, C) or p=a+b+c.
If the characteristic information (A, B, C) or P of the selected modulation format S is successfully compared with the characteristic information of the modulation formats, the characteristic information (A, B, C) can be indicated to exist in the characteristic information, namely the modulation format S exists in the modulation formats, and the modulation format can be switched to the modulation format S at the moment; or it may be stated that the characteristic information P exists in the plurality of characteristic information, that is, the modulation format L exists in the plurality of modulation formats, and at this time, the modulation format may be switched to the modulation format L having high similarity with the modulation format S.
Wherein the user services comprise delay sensitive services and/or high priority services; and the downlink channel forwards the delay sensitive service and/or the high-priority service selection channel, and the channel uses the frame as a scheduling unit to perform scheduling forwarding. And selecting the data block of the long frame structure or the short frame structure as a reference to judge, and further determining the long frame structure or the short frame structure to dispatch and forward the delay sensitive service or the high priority service according to the data volume of the delay sensitive service or the high priority service.
The user service comprises other services, and the other services are forwarded in a TDMA mode. The cluster head can be utilized for scheduling and forwarding; time slot resources can be allocated for the other services; the allocation method comprises a fixed method, an exclusive method, an emergency method and a dynamic allocation method. When the cluster head collects the first priority service in other services, selecting an exclusive method to allocate time slot resources; when the cluster head does not collect the first priority service and the second priority service in other services and collects the normal service in other services, a dynamic allocation method is selected to allocate time slot resources; when the cluster head does not collect the first priority service in other services and collects the second priority service, selecting an emergency method to allocate the time slot resources, if the normal service is collected, allocating the residual time slot resources according to a dynamic allocation method, and if the normal service is not collected, allocating the residual time slot resources according to a fixed method.
The invention selects one or more users on the channel through the user selection module; the scheduling format selection module selects a corresponding modulation format according to the one or more users; and the scheduling and forwarding module performs scheduling and forwarding of the user service of the one or more users according to the modulation format. The mixed transmission system based on time slot and packet scheduling can perform different scheduling and forwarding operations according to different user services, so that the user services can be transmitted in time, and the high efficiency of work is ensured.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A hybrid transmission method based on time slot and packet scheduling, comprising the steps of:
selecting one or more users on a channel, wherein the one or more users are the users selected according to the channel gain and the signal-to-leakage-noise ratio of the users;
the signal-to-noise ratio is obtained by dividing the equivalent channel gain of a user after precoding by the sum of the received noise of the user and the power of the data leaked to the users, and Q users are selected from the signal-to-noise ratio of the users according to the sequence from big to small to form a user set; selecting a user set with the maximum average value as an optimal user set by using the average value of the signal-to-noise ratios corresponding to the users in each user set, wherein one or more users are in the optimal user set;
selecting a corresponding modulation format according to the one or more users, including:
the transmission performance or transmission efficiency or transmission damage of a plurality of modulation formats are endowed with a numerical value in sequence from big to small or from small to big in advance; then the characteristic information of the transmission performance value a, the transmission efficiency value B and the transmission impairment value C of one modulation format (i.e. the characteristic information of the modulation format) is denoted (a, B, C) or p=a+b+c; if the characteristic information (A, B, C) or P of the selected modulation format S is successfully compared with the characteristic information of the modulation formats, the characteristic information (A, B, C) in the characteristic information is indicated, namely the modulation format S is present in the modulation formats, and the modulation format is switched to the modulation format S; or the characteristic information P exists in the plurality of characteristic information, namely the modulation format L exists in the plurality of modulation formats, and the modulation format is switched to the modulation format L with high similarity with the modulation format S;
scheduling and forwarding the user service of the one or more users according to the modulation format;
the user service comprises a time delay sensitive service and/or a high priority service, and a downlink channel forwards the time delay sensitive service and/or the high priority service selection channel, comprising the following steps: the downlink channel uses a frame as a scheduling unit to schedule and forward, a data block with a long frame structure or a short frame structure is selected as a reference to judge, and the long frame structure or the short frame structure is determined to schedule and forward the time delay sensitive service or the high priority service according to the data volume of the time delay sensitive service or the high priority service;
the user service includes other services, and the other services are forwarded in a TDMA manner, including: scheduling and forwarding are carried out by using the cluster head so as to allocate time slot resources for other services, and when the cluster head collects the first priority service in the other services, an exclusive method is selected to allocate the time slot resources; when the cluster head does not collect the first priority service and the second priority service in other services and collects the normal service in other services, a dynamic allocation method is selected to allocate time slot resources; when the cluster head does not collect the first priority service in other services and collects the second priority service, selecting an emergency method to allocate the time slot resources, if the normal service is collected, allocating the residual time slot resources according to a dynamic allocation method, and if the normal service is not collected, allocating the residual time slot resources according to a fixed method.
2. The hybrid transmission method of claim 1, wherein the modulation format of the one or more users is selected by a modulation instruction.
3. A hybrid transmission system based on slot and packet scheduling, comprising:
the system comprises a user selection module, a channel selection module and a channel selection module, wherein the user selection module is used for selecting one or more users on a channel, wherein the one or more users are the users selected according to the channel gain and the signal-to-noise-and-leakage ratio of the users;
the signal-to-noise ratio is obtained by dividing the equivalent channel gain of a user after precoding by the sum of the received noise of the user and the power of the data leaked to the users, and Q users are selected from the signal-to-noise ratio of the users according to the sequence from big to small to form a user set; selecting a user set with the maximum average value as an optimal user set by using the average value of the signal-to-noise ratios corresponding to the users in each user set, wherein one or more users are in the optimal user set;
a scheduling format selection module, configured to select a corresponding modulation format according to the one or more users, including:
the transmission performance or transmission efficiency or transmission damage of a plurality of modulation formats are endowed with a numerical value in sequence from big to small or from small to big in advance; then the characteristic information of the transmission performance value a, the transmission efficiency value B and the transmission impairment value C of one modulation format (i.e. the characteristic information of the modulation format) is denoted (a, B, C) or p=a+b+c; if the characteristic information (A, B, C) or P of the selected modulation format S is successfully compared with the characteristic information of the modulation formats, the characteristic information (A, B, C) in the characteristic information is indicated, namely the modulation format S is present in the modulation formats, and the modulation format is switched to the modulation format S; or the characteristic information P exists in the plurality of characteristic information, namely the modulation format L exists in the plurality of modulation formats, and the modulation format is switched to the modulation format L with high similarity with the modulation format S;
a dispatch forwarding module, configured to perform dispatch forwarding of user services of the one or more users according to the modulation format;
the user service comprises a time delay sensitive service and/or a high priority service, and a downlink channel forwards the time delay sensitive service and/or the high priority service selection channel, comprising the following steps: the downlink channel uses a frame as a scheduling unit to schedule and forward, a data block with a long frame structure or a short frame structure is selected as a reference to judge, and the long frame structure or the short frame structure is determined to schedule and forward the time delay sensitive service or the high priority service according to the data volume of the time delay sensitive service or the high priority service;
the user service includes other services, and the other services are forwarded in a TDMA manner, including: scheduling and forwarding are carried out by using the cluster head so as to allocate time slot resources for other services, and when the cluster head collects the first priority service in the other services, an exclusive method is selected to allocate the time slot resources; when the cluster head does not collect the first priority service and the second priority service in other services and collects the normal service in other services, a dynamic allocation method is selected to allocate time slot resources; when the cluster head does not collect the first priority service in other services and collects the second priority service, selecting an emergency method to allocate the time slot resources, if the normal service is collected, allocating the residual time slot resources according to a dynamic allocation method, and if the normal service is not collected, allocating the residual time slot resources according to a fixed method.
4. A hybrid transmission system according to claim 3, characterized in that the modulation format of the one or more users is selected by a modulation instruction.
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