CN110784297A - Resource unit allocation method and device - Google Patents
Resource unit allocation method and device Download PDFInfo
- Publication number
- CN110784297A CN110784297A CN201911055406.9A CN201911055406A CN110784297A CN 110784297 A CN110784297 A CN 110784297A CN 201911055406 A CN201911055406 A CN 201911055406A CN 110784297 A CN110784297 A CN 110784297A
- Authority
- CN
- China
- Prior art keywords
- resource unit
- information
- data
- station
- response frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The application is applicable to the technical field of communication, and provides a resource unit allocation method, which comprises the following steps: when detecting data transmission requests sent by a plurality of accessed sites, acquiring modulation parameter information and resource unit grade information of each site; sending a trigger frame to each station; acquiring a response frame returned by the station based on the trigger frame; determining the effective data occupation ratio corresponding to the station based on the response frame; and when detecting that the resource unit level indicated by the resource unit level information corresponding to the site is greater than 0, adjusting the resource unit level information. According to the method, the resource unit grade information is distributed to the sites before data transmission, the resource unit grade information is adjusted according to the effective data proportion, frequency band resources can be divided more finely in multi-site transmission, and the number of users accessed at the same time and the overall utilization rate of frequency spectrum are improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for allocating resource units.
Background
In the 802.11n/ac/ax protocol, a Media Access Control (MAC) protocol data unit (MPDU) Aggregation technology is provided, in which one or more MPDUs are aggregated into an Aggregation frame (a-MPDU), and a Block acknowledgement (Block ACK) mechanism is combined, so as to achieve the purpose of further improving transmission efficiency. When multiple Stations (STA) transmit simultaneously, they first calculate the length of the physical layer service data unit (PSDU) carried in the response frame according to the parameters. Assuming that the transmission data size of a STA is a-MPDU _ LENGTH, in order to adapt the PSDU LENGTH in the acknowledgement frame, it needs to add padding bytes (Pad bytes) at the end after a-MPDU according to a specific rule defined by the 802.11 protocol, which are actually some invalid data. This situation results in a situation where in multiple users, some users plus padding bytes last multiple orthogonal frequency division multiplexing OFDM symbols, which results in a waste of frequency domain resources and transmission time.
Disclosure of Invention
The embodiment of the application provides a resource unit allocation method and device, which can solve the problem of frequency domain resource and transmission time waste.
In a first aspect, an embodiment of the present application provides a method for allocating resource units, including:
when detecting data transmission requests sent by a plurality of accessed sites, acquiring modulation parameter information and resource unit grade information of each site;
sending a trigger frame to each station; the trigger frame comprises the modulation parameter information and the resource unit grade information;
acquiring a response frame returned by the station based on the trigger frame; the response frame comprises information of transmission data carried by the response frame; the information of the transmission data carried by the response frame comprises effective data and padding byte information transmitted by the station;
determining the effective data occupation ratio corresponding to the station based on the response frame; the effective data ratio mark indicates the proportion of effective data transmitted by the station in the transmission data of the response frame in a preset time;
and when detecting that the resource unit grade represented by the resource unit grade information corresponding to the site is greater than 0, adjusting the resource unit grade information based on the effective data proportion and a preset adjustment strategy.
Further, after the determining, based on the response frame, the valid data percentage corresponding to the station, the method further includes:
when detecting that the resource unit level indicated by the resource unit level information corresponding to the station is 0, the resource unit level information is maintained unchanged.
Further, after the determining, based on the response frame, the valid data percentage corresponding to the station, the method further includes:
when detecting that the resource unit level indicated by the resource unit level information corresponding to the station is 0 and detecting that the station updates the service quality level information, adjusting the resource unit level information based on the service quality level information.
Further, adjusting the resource unit level information based on the effective data percentage and a preset adjustment policy includes:
determining a data subcarrier ratio set; the data subcarrier fraction set comprises data subcarrier fraction elements; the data subcarrier ratio identifies a ratio between a data subcarrier corresponding to first resource unit level information and a data subcarrier corresponding to the resource unit level information; the first resource unit grade information comprises all resource unit grade information which is less than the resource unit grade information in preset resource unit grade information;
searching a target data subcarrier ratio larger than the effective data ratio from the data subcarrier ratio set;
and when the target data subcarrier ratio is found, adjusting the resource unit grade information to the resource unit grade information corresponding to the target data subcarrier ratio.
Further, the modulation parameter information includes: transmission time information, signal modulation transmission rate, guard interval information.
Further, after the searching for the target data subcarrier proportion larger than the effective data proportion from the data subcarrier proportion set, the method further includes:
when the target data subcarrier proportion is not found, the signal modulation transmission rate information is adjusted to target signal modulation transmission rate information; the target signal modulation transmission rate information is smaller than the signal modulation transmission rate information and satisfies a preset transmission condition.
Further, the determining, based on the response frame, the valid data proportion corresponding to the station includes:
analyzing the response frame to obtain a first number of first orthogonal frequency division multiplexing symbols of the response frame and a second number of second orthogonal frequency division multiplexing symbols which do not bear padding bytes; the first number identifies a number of orthogonal frequency division multiplexing symbols used to carry the transmission data;
and determining the effective data ratio transmitted by the station based on the first quantity and the second quantity.
In a second aspect, an embodiment of the present application provides an apparatus for allocating resource units, including:
a first obtaining unit, configured to obtain modulation parameter information and resource unit level information of each station when detecting data transmission requests sent by multiple accessed stations;
a sending unit, configured to send a trigger frame to each of the stations; the trigger frame comprises the modulation parameter information and the resource unit grade information;
a second obtaining unit, configured to obtain a response frame returned by the station based on the trigger frame; the response frame comprises information of transmission data carried by the response frame; the information of the transmission data carried by the response frame comprises effective data and padding byte information transmitted by the station;
a first determining unit, configured to determine, based on the response frame, an effective data proportion corresponding to the station; the effective data ratio mark indicates the proportion of effective data transmitted by the station in the transmission data of the response frame in a preset time;
a first adjusting unit, configured to, when it is detected that a resource unit level indicated by the resource unit level information corresponding to the station is greater than 0, adjust the resource unit level information based on the effective data percentage and a preset adjustment policy.
Further, the apparatus for allocating resource units further includes:
a second adjusting unit, configured to, when it is detected that the resource unit level indicated by the resource unit level information corresponding to the station is 0, maintain the resource unit level information unchanged.
Further, the apparatus for allocating resource units further includes:
when detecting that the resource unit level indicated by the resource unit level information corresponding to the station is 0 and detecting that the station updates the service quality level information, adjusting the resource unit level information based on the service quality level information.
Further, the first adjusting unit includes:
a second determining unit that determines a data subcarrier fraction set; the data subcarrier fraction set comprises data subcarrier fraction elements; the data subcarrier ratio identifies a ratio between a data subcarrier corresponding to first resource unit level information and a data subcarrier corresponding to the resource unit level information; the first resource unit grade information comprises all resource unit grade information which is less than the resource unit grade information in preset resource unit grade information;
a searching unit, configured to search a target data subcarrier proportion larger than the effective data proportion from the data subcarrier proportion set;
and a third adjusting unit, configured to adjust the resource unit rank information to resource unit rank information corresponding to the target data subcarrier ratio when the target data subcarrier ratio is found.
Further, the modulation parameter information includes: transmission time information, signal modulation transmission rate, guard interval information.
Further, the first adjusting unit includes:
when the target data subcarrier proportion is not found, the signal modulation transmission rate information is adjusted to target signal modulation transmission rate information; the target signal modulation transmission rate information is smaller than the signal modulation transmission rate information and satisfies a preset transmission condition.
Further, the first determining unit is specifically configured to:
analyzing the response frame to obtain a first number of first orthogonal frequency division multiplexing symbols of the response frame and a second number of second orthogonal frequency division multiplexing symbols which do not bear padding bytes; the first number identifies the number of orthogonal frequency division multiplexing symbols carrying transmission data of the station;
and determining the effective data ratio transmitted by the station based on the first quantity and the second quantity.
In a third aspect, an embodiment of the present application provides a terminal device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the processor implements the method for allocating resource units according to the first aspect.
In a fourth aspect, the present application provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the computer program implements the resource unit allocation method according to the first aspect.
In a fifth aspect, the present application provides a computer program product, which when run on a terminal device, causes the terminal device to execute the method for allocating resource units according to the first aspect.
It is to be understood that the beneficial effects of the second to fifth aspects can be seen from the description of the first aspect, and are not repeated herein.
In the embodiment of the application, when data transmission requests sent by a plurality of accessed sites are detected, modulation parameter information and resource unit grade information of each site are acquired; sending a trigger frame to each station; acquiring a response frame returned by the station based on the trigger frame; determining the effective data occupation ratio corresponding to the station based on the response frame; and when detecting that the resource unit grade represented by the resource unit grade information corresponding to the site is greater than 0, adjusting the resource unit grade information based on the effective data proportion and a preset adjustment strategy. According to the method, the resource unit grade information is distributed to the sites before data transmission, and the resource unit grade information is adjusted according to the effective data proportion, so that frequency band resources can be divided more finely in multi-site transmission, and the number of users accessed at the same time and the overall utilization rate of frequency spectrum are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating a resource unit allocation method according to a first embodiment of the present application;
fig. 2 is a schematic flowchart of a refinement at S104 in a resource unit allocation method according to a first embodiment of the present application;
fig. 3 is a schematic flowchart of a refinement at S105 in a resource unit allocation method according to a first embodiment of the present application;
fig. 4 is a schematic diagram of an apparatus for allocating resource units according to a second embodiment of the present application;
fig. 5 is a schematic diagram of an allocation apparatus for resource units according to a third embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to" determining "or" in response to detecting ". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
Referring to fig. 1, fig. 1 is a flowchart illustrating a resource unit allocation method according to a first embodiment of the present application. The main execution body of the resource unit allocation method in this embodiment is an access point. The method for allocating resource units as shown in fig. 1 may include:
s101: when detecting data transmission requests sent by a plurality of accessed sites, acquiring modulation parameter information and resource unit level information of each site.
In the 802.11n/ac/ax protocol, a Media Access Control (MAC) protocol data unit (MPDU) Aggregation technology is provided, in which one or more MPDUs are aggregated into an Aggregation frame (a-MPDU), and a Block acknowledgement (Block ACK) mechanism is combined, so as to achieve the purpose of further improving transmission efficiency. The 802.11ax protocol uses Orthogonal Frequency Division Multiple Access (OFDMA) technology, which divides a transmission band into a plurality of Resource Units (RUs) and can support simultaneous transmission of a plurality of stations.
The access point detects the access condition of the stations and the data transmission condition of the accessed stations in real time, and when the access point detects data transmission requests sent by the accessed stations, the access point acquires the modulation parameter information and the resource unit level information of each station. The modulation parameter information is a necessary parameter for the access point to generate the response frame, and in this embodiment, the modulation parameter information may include transmission time information, signal modulation transmission rate, and guard interval information, but is not limited thereto. When the station receives the modulation parameter information and the resource unit level information, a response frame is generated based on the modulation parameter information and the resource unit level information. The resource unit class information is used to indicate a resource unit class for subsequent data transmission.
S102: sending a trigger frame to each station; the trigger frame includes the modulation parameter information and the resource unit rank information.
The access point sends a trigger frame to each station, wherein the trigger frame comprises transmission time information, signal modulation transmission rate information, guard interval information and resource unit grade information. The trigger frame is used for triggering the station to generate a response frame, the trigger frame carries resource unit level information and modulation parameter information, and the modulation parameter information is necessary parameters required by the station to reply the trigger frame, namely after the station receives the trigger frame, the station generates the response frame based on the information carried in the trigger frame.
S103: acquiring a response frame returned by the station based on the trigger frame; the response frame comprises information of transmission data carried by the response frame; the information of the transmission data carried by the response frame includes valid data and padding byte information transmitted by the station.
And the access point acquires a response frame returned by the station based on the trigger frame, wherein the response frame comprises information of transmission data carried by the response frame, and the information of the transmission data carried by the response frame comprises effective data transmitted by the station and filling byte information. The valid data is data to be actually transmitted, that is, data except for the stuff bytes in the transmission data. The stuff bytes are invalid bytes added at the end for stuffing according to a specific rule defined by the protocol.
After receiving the trigger frame, the station first calculates a LENGTH of a physical layer service data unit (PSDU) carried in the response frame according to a parameter carried in the trigger frame, and may mark the LENGTH as PSDU _ LENGTH. For example, assuming that the LENGTH of the transmission data amount of a certain station is a-MPDU _ LENGTH, in order to adapt the PSDU LENGTH in the response frame, it needs to add Padding bytes (Pad bytes) at the end, such as EOF Padding subframe, after a-MPDU according to a specific rule defined by the 802.11 protocol, which are actually some invalid data, that is, the information of the transmission data sent through the response frame includes valid data and Padding Byte information.
S104: determining the effective data occupation ratio corresponding to the station based on the response frame; the effective data ratio mark is the proportion of effective data transmitted by the station in a preset time to transmission data of the response frame.
The access point determines an effective data ratio corresponding to the station based on the response frame, and the effective data ratio identifies the proportion of effective data transmitted by the station in a preset time to transmission data of the response frame. Specifically, the access point determines effective data transmitted by the station within the preset time and transmission data of the response frame based on the response frame, and then performs ratio calculation based on the obtained effective data transmitted by the station within the preset time and the obtained transmission data of the response frame to obtain an effective data ratio.
Further, in order to accurately obtain the effective data proportion transmitted by the workstation, S104 may include S1041 to S1042, as shown in fig. 2, S1041 to S1042 specifically include the following:
s1041: analyzing the response frame to obtain a first number of first orthogonal frequency division multiplexing symbols of the response frame and a second number of second orthogonal frequency division multiplexing symbols which do not bear padding bytes; the first number identifies a number of orthogonal frequency division multiplexing symbols used to carry the transmission data.
The access point analyzes the response frame, the response frame comprises information of transmission data sent by the response frame and information of effective data transmitted by the station, a first number of first orthogonal frequency division multiplexing symbols of the response frame and a second number of second orthogonal frequency division multiplexing symbols not bearing the padding bytes are obtained through analysis, and the number of the first orthogonal frequency division multiplexing symbols identifies the number of the orthogonal frequency division multiplexing symbols used for bearing the information of the transmission data in the response frame.
S1042: and determining the effective data ratio transmitted by the station based on the first quantity and the second quantity.
The access point calculates a ratio of valid data transmitted by the stations based on the first number and the second number. For example, the number of the first ofdm symbols is N, and the number of the second ofdm symbols not carrying the stuff bytes in the response frame of each station is { M }
1，M
2，M
3，…，M
K-1，M
KWhere K is a siteAnd (4) counting. Then, the ratio of valid data is { P }
1，P
2，P
3，…，P
K-1，P
KIn which P is
i＝M
i/N。
Further, in order to determine the most appropriate resource unit level information when it is detected that the resource unit level indicated by the resource unit level information corresponding to the station is 0, after S104, the method may further include: when detecting that the resource unit level indicated by the resource unit level information corresponding to the station is 0, the resource unit level information is maintained unchanged. The access point judges the resource unit grade information corresponding to the station point, and when the resource unit grade indicated by the resource unit grade information corresponding to the station point is detected to be 0, the current resource unit grade information is kept unchanged, namely the resource unit grade information initially distributed to the station point by the access point is adopted.
Further, in order to determine the most suitable resource unit level information when it is detected that the resource unit level indicated by the resource unit level information corresponding to the station is 0 and it is detected that the station updates the quality of service level information. After S104, the method may further include: when detecting that the resource unit level indicated by the resource unit level information corresponding to the station is 0 and detecting that the station updates the service quality level information, adjusting the resource unit level information based on the service quality level information.
The access point judges the resource unit grade information corresponding to the station point, and when the resource unit grade indicated by the resource unit grade information corresponding to the station point is detected to be 0, the detection station updates the service quality grade information. When detecting that the resource unit level indicated by the resource unit level information corresponding to the station is 0 and detecting that the station updates the service quality level information, the access point adjusts the resource unit level information based on the service quality level information. Specifically, the access point may pre-store a corresponding relationship between preset quality of service level information and preset resource unit level information, and the access point determines target resource unit level information corresponding to the quality of service level information according to the corresponding relationship between the preset quality of service level information and the preset resource unit level information, and then adjusts the current resource unit level information to the target resource unit level information corresponding to the quality of service level information.
S105: and when detecting that the resource unit grade represented by the resource unit grade information corresponding to the site is greater than 0, adjusting the resource unit grade information based on the effective data proportion and a preset adjustment strategy.
The access point is preset with a preset adjustment strategy, the preset adjustment strategy is used for adjusting the resource unit grade information according to the effective data ratio, and the preset adjustment strategy can comprise the corresponding relation between the preset effective data ratio and the preset resource unit grade. When the access point detects that the resource unit level indicated by the resource unit level information corresponding to the station point is greater than 0, the access point adjusts the resource unit level information based on the effective data ratio and the preset adjustment strategy, and the access point can determine target resource unit level information corresponding to the effective data ratio according to the corresponding relation between the preset effective data ratio and the preset resource unit level and adjust the resource unit level information to the target resource unit level information.
Further, in order to more accurately adjust the resource unit rank information, S105 may include S1051 to S1053, as shown in fig. 3, where S1051 to S1053 are specifically as follows:
s1051: determining a data subcarrier ratio set; the data subcarrier fraction set comprises data subcarrier fractions; the data subcarrier ratio identifies a ratio between a data subcarrier corresponding to first resource unit level information and a data subcarrier corresponding to the resource unit level information; the first resource unit level information includes all resource unit level information in the preset resource unit level information that is less than the resource unit level information.
The access point determines a data subcarrier ratio set, the data subcarrier ratio set comprises a data subcarrier ratio, the data subcarrier ratio identifies a ratio between a data subcarrier corresponding to the first resource unit level information and a data subcarrier corresponding to the resource unit level information, and the first resource unit level information comprises all resource unit level information which is less than the resource unit level information in the preset resource unit level information. The preset resource unit level may be all resource unit levels defined in the protocol, for example, RU0-RU6, and each preset resource unit level information corresponds to different numbers of subcarriers and data subcarriers, which may specifically refer to the following table:
| RU grade | RU Length (number of subcarriers) | Number of data subcarriers N SD |
| 0 | RU26 | N 0＝24 |
| 1 | RU52 | N 1＝48 |
| 2 | RU106 | N 2＝102 |
| 3 | RU242 | N 3＝234 |
| 4 | RU484 | N 4＝468 |
| 5 | RU996 | N 5＝980 |
| 6 | RU2X996 | N 6＝1960 |
For example, the data subcarrier corresponding to the resource unit level information is N
SAcquiring first resource unit grade information smaller than the resource unit grade information from preset resource unit grade information, acquiring data subcarriers corresponding to the first resource unit grade information when the first resource unit grade information is acquired, and calculating to obtain a data subcarrier proportion set Q ═ N
0/N
S，N
1/N
S，…，N
S-1/N
SIn which N is
0......N
S-1And indicating the data subcarrier corresponding to the first resource unit level information.
S1052: and searching a target data subcarrier ratio larger than the effective data ratio from the data subcarrier ratio set.
The access point traverses the data subcarrier proportion set, compares the value of each data subcarrier proportion with the value of the effective data proportion, and searches the target data subcarrier proportion which is larger than the effective data proportion from the data subcarrier proportion set.
Further, in order to improve the communication quality when the target data subcarrier fraction is not found, after S1052, the method may further include: when the target data subcarrier proportion is not found, the signal modulation transmission rate information is adjusted to target signal modulation transmission rate information; the target signal modulation transmission rate information is smaller than the signal modulation transmission rate information and satisfies a preset transmission condition.
And when the target data subcarrier proportion is not found, namely the target data subcarrier proportion larger than the effective data proportion does not exist in the data subcarrier proportion set, the access point determines the target signal modulation transmission rate information. The target signal modulation transmission rate information is smaller than the signal modulation transmission rate information, and the target signal modulation transmission rate information meets a preset transmission condition. The preset transmission condition may be that the modulation transmission rate information of the target signal is as small as possible, but the station must be enabled to modulate all its valid data in the current resource unit level, and the added padding bytes are as small as possible. It is to be understood that if all the signal modulation transmission rate information lower than the current signal modulation transmission rate information does not satisfy the above principle, the signal modulation transmission rate information is kept unchanged.
S1053: and when the target data subcarrier ratio is found, adjusting the resource unit grade information to the resource unit grade information corresponding to the target data subcarrier ratio.
When the target data subcarrier proportion is found, namely the target data subcarrier proportion larger than the effective data proportion information exists in the data subcarrier proportion information set, the access point acquires the resource unit grade information corresponding to the target data subcarrier proportion and adjusts the resource unit grade information into the resource unit grade information corresponding to the target data subcarrier proportion.
When the target data subcarrier occupation ratio is multiple, the resource unit grade information can be adjusted to be the minimum resource unit grade information at one time, and can also be adjusted step by step, so that the resource unit grade information can be converged to be the most appropriate grade within a period of communication time.
In the embodiment of the application, when data transmission requests sent by a plurality of accessed sites are detected, modulation parameter information and resource unit grade information of each site are acquired; sending a trigger frame to each station; acquiring a response frame returned by the station based on the trigger frame; determining the effective data occupation ratio corresponding to the station based on the response frame; and when detecting that the resource unit grade represented by the resource unit grade information corresponding to the site is greater than 0, adjusting the resource unit grade information based on the effective data proportion and a preset adjustment strategy. According to the method, the resource unit grade information is distributed to the sites before data transmission, and the resource unit grade information is adjusted according to the effective data proportion, so that frequency band resources can be divided more finely in multi-site transmission, and the number of users accessed at the same time and the overall utilization rate of frequency spectrum are improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Referring to fig. 4, fig. 4 is a schematic diagram of an apparatus for allocating resource units according to a second embodiment of the present application. The units included are used to perform the steps in the embodiments corresponding to fig. 1-3. Please refer to the related description of the embodiments corresponding to fig. 1 to fig. 3. For convenience of explanation, only the portions related to the present embodiment are shown. Referring to fig. 4, the resource unit allocation apparatus 4 includes:
a first obtaining unit 410, configured to obtain modulation parameter information and resource unit level information of each station when detecting data transmission requests sent by multiple accessed stations;
a sending unit 420, configured to send a trigger frame to each of the stations; the trigger frame comprises the modulation parameter information and the resource unit grade information;
a second obtaining unit 430, configured to obtain a response frame returned by the station based on the trigger frame; the response frame comprises information of transmission data carried by the response frame; the information of the transmission data carried by the response frame comprises effective data and padding byte information transmitted by the station;
a first determining unit 440, configured to determine, based on the response frame, a valid data proportion corresponding to the station; the effective data ratio mark indicates the proportion of effective data transmitted by the station in the transmission data of the response frame in a preset time;
a first adjusting unit 450, configured to, when it is detected that the resource unit level indicated by the resource unit level information corresponding to the station is greater than 0, adjust the resource unit level information based on the effective data percentage and a preset adjustment policy.
Further, the apparatus 4 for allocating resource units further includes:
a second adjusting unit, configured to, when it is detected that the resource unit level indicated by the resource unit level information corresponding to the station is 0, maintain the resource unit level information unchanged.
Further, the apparatus 4 for allocating resource units further includes:
when detecting that the resource unit level indicated by the resource unit level information corresponding to the station is 0 and detecting that the station updates the service quality level information, adjusting the resource unit level information based on the service quality level information.
Further, the first adjusting unit 450 includes:
a second determining unit, configured to determine a data subcarrier fraction set; the data subcarrier fraction set comprises data subcarrier fraction elements; the data subcarrier ratio identifies a ratio between a data subcarrier corresponding to first resource unit level information and a data subcarrier corresponding to the resource unit level information; the first resource unit grade information comprises all resource unit grade information which is less than the resource unit grade information in preset resource unit grade information;
a searching unit, configured to search a target data subcarrier proportion larger than the effective data proportion from the data subcarrier proportion set;
and a third adjusting unit, configured to adjust the resource unit rank information to resource unit rank information corresponding to the target data subcarrier ratio when the target data subcarrier ratio is found.
Further, the modulation parameter information includes: transmission time information, signal modulation transmission rate, guard interval information.
Further, the first adjusting unit 450 includes:
when the target data subcarrier proportion is not found, the signal modulation transmission rate information is adjusted to target signal modulation transmission rate information; the target signal modulation transmission rate information is smaller than the signal modulation transmission rate information and satisfies a preset transmission condition.
Further, the first determining unit 440 is specifically configured to:
analyzing the response frame to obtain a first number of first orthogonal frequency division multiplexing symbols of the response frame and a second number of second orthogonal frequency division multiplexing symbols which do not bear padding bytes; the first number identifies the number of orthogonal frequency division multiplexing symbols carrying transmission data of the station;
and determining the effective data ratio transmitted by the station based on the first quantity and the second quantity.
Fig. 5 is a schematic diagram of an allocation apparatus for resource units according to a third embodiment of the present application. As shown in fig. 5, the resource unit allocation apparatus 5 of this embodiment includes: a processor 50, a memory 51 and a computer program 52, such as a program of allocation of resource units, stored in said memory 51 and executable on said processor 50. The processor 50, when executing the computer program 52, implements the steps in the above-described method embodiment of the resource unit allocation apparatus, such as the steps 101 to 105 shown in fig. 1. Alternatively, the processor 50, when executing the computer program 52, implements the functions of the modules/units in the above-mentioned device embodiments, such as the functions of the modules 410 to 450 shown in fig. 4.
Illustratively, the computer program 52 may be partitioned into one or more modules/units, which are stored in the memory 51 and executed by the processor 50 to accomplish the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 52 in the resource unit allocation device 5. For example, the computer program 52 may be divided into a first acquiring unit, a sending unit, a second acquiring unit, a first determining unit, and a first adjusting unit, and the specific functions of each unit are as follows:
a first obtaining unit, configured to obtain modulation parameter information and resource unit level information of each station when detecting data transmission requests sent by multiple accessed stations;
a sending unit, configured to send a trigger frame to each of the stations; the trigger frame comprises the modulation parameter information and the resource unit grade information;
a second obtaining unit, configured to obtain a response frame returned by the station based on the trigger frame; the response frame comprises information of transmission data carried by the response frame; the information of the transmission data carried by the response frame comprises effective data and padding byte information transmitted by the station;
a first determining unit, configured to determine, based on the response frame, an effective data proportion corresponding to the station; the effective data ratio mark indicates the proportion of effective data transmitted by the station in the transmission data of the response frame in a preset time;
a first adjusting unit, configured to, when it is detected that a resource unit level indicated by the resource unit level information corresponding to the station is greater than 0, adjust the resource unit level information based on the effective data percentage and a preset adjustment policy.
The allocation device of the resource unit may include, but is not limited to, the processor 50 and the memory 51. It will be appreciated by those skilled in the art that fig. 5 is merely an example of the resource unit allocating device 5 and does not constitute a limitation of the resource unit allocating device 5 and may comprise more or less components than those shown, or some components may be combined, or different components, for example the resource unit allocating device may also comprise an input output device, a network access device, a bus, etc.
The Processor 50 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 51 may be an internal storage unit of the allocation device 5 of resource units, such as a hard disk or a memory of the allocation device 5 of resource units. The memory 51 may also be an external storage device of the resource unit distribution device 5, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card), and the like, which are equipped on the resource unit distribution device 5. Further, the memory 51 may also comprise both an internal storage unit and an external storage device of the allocation device 5 of resource units. The memory 51 is used for storing the computer programs and other programs and data required by the allocation device of the resource units. The memory 51 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by a computer program, which can be stored in a computer-readable storage medium and can realize the steps of the embodiments of the methods described above when the computer program is executed by a processor. . Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A method for allocating resource units, applied to an access point, the method comprising:
when detecting data transmission requests sent by a plurality of accessed sites, acquiring modulation parameter information and resource unit grade information of each site;
sending a trigger frame to each station; the trigger frame comprises the modulation parameter information and the resource unit grade information;
acquiring a response frame returned by the station based on the trigger frame; the response frame comprises information of transmission data carried by the response frame; the information of the transmission data carried by the response frame comprises effective data and padding byte information transmitted by the station;
determining the effective data occupation ratio corresponding to the station based on the response frame; the effective data ratio mark indicates the proportion of effective data transmitted by the station in the transmission data of the response frame in a preset time;
and when detecting that the resource unit grade represented by the resource unit grade information corresponding to the site is greater than 0, adjusting the resource unit grade information based on the effective data proportion and a preset adjustment strategy.
2. The method for allocating resource units according to claim 1, wherein after said determining the valid data fraction corresponding to the station based on the response frame, further comprises:
when detecting that the resource unit level indicated by the resource unit level information corresponding to the station is 0, the resource unit level information is maintained unchanged.
3. The method for allocating resource units according to claim 1, wherein after said determining the valid data fraction corresponding to the station based on the response frame, further comprises:
when detecting that the resource unit level indicated by the resource unit level information corresponding to the station is 0 and detecting that the station updates the service quality level information, adjusting the resource unit level information based on the service quality level information.
4. The method for allocating resource units according to claim 1, wherein adjusting the resource unit rank information based on the available data fraction and a preset adjustment policy comprises:
determining a data subcarrier ratio set; the data subcarrier fraction set comprises data subcarrier fractions; the data subcarrier ratio identifies a ratio between a data subcarrier corresponding to first resource unit level information and a data subcarrier corresponding to the resource unit level information; the first resource unit grade information comprises all resource unit grade information which is less than the resource unit grade information in preset resource unit grade information;
searching a target data subcarrier ratio larger than the effective data ratio from the data subcarrier ratio set;
and when the target data subcarrier ratio is found, adjusting the resource unit grade information to the resource unit grade information corresponding to the target data subcarrier ratio.
5. The method of any of claims 1 to 4, wherein the modulation parameter information comprises: transmission time information, signal modulation transmission rate, guard interval information.
6. The method of resource unit allocation according to claim 5, wherein after said searching for a target data sub-carrier fraction greater than said effective data fraction from said set of data sub-carrier fractions, further comprising:
when the target data subcarrier proportion is not found, the signal modulation transmission rate is adjusted to be a target signal modulation transmission rate; the target signal modulation transmission rate is smaller than the signal modulation transmission rate and meets a preset transmission condition.
7. The method for allocating resource units according to any one of claims 1 to 4 and 6, wherein the determining the valid data proportion corresponding to the station based on the response frame includes:
analyzing the response frame to obtain a first number of first orthogonal frequency division multiplexing symbols of the response frame and a second number of second orthogonal frequency division multiplexing symbols which do not bear padding bytes; the first number identifies a number of orthogonal frequency division multiplexing symbols used to carry the transmission data;
and determining the effective data ratio transmitted by the station based on the first quantity and the second quantity.
8. An apparatus for allocating resource units, comprising:
a first obtaining unit, configured to obtain modulation parameter information and resource unit level information of each station when detecting data transmission requests sent by multiple accessed stations;
a sending unit, configured to send a trigger frame to each of the stations; the trigger frame comprises the modulation parameter information and the resource unit grade information;
a second obtaining unit, configured to obtain a response frame returned by the station based on the trigger frame; the response frame comprises information of transmission data carried by the response frame; the information of the transmission data carried by the response frame comprises effective data and padding byte information transmitted by the station;
a first determining unit, configured to determine, based on the response frame, an effective data proportion corresponding to the station; the effective data ratio mark indicates the proportion of effective data transmitted by the station in the transmission data of the response frame in a preset time;
a first adjusting unit, configured to, when it is detected that a resource unit level indicated by the resource unit level information corresponding to the station is greater than 0, adjust the resource unit level information based on the effective data percentage and a preset adjustment policy.
9. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911055406.9A CN110784297B (en) | 2019-10-31 | 2019-10-31 | Resource unit allocation method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911055406.9A CN110784297B (en) | 2019-10-31 | 2019-10-31 | Resource unit allocation method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110784297A true CN110784297A (en) | 2020-02-11 |
| CN110784297B CN110784297B (en) | 2022-05-24 |
Family
ID=69388278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911055406.9A Active CN110784297B (en) | 2019-10-31 | 2019-10-31 | Resource unit allocation method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110784297B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113099536A (en) * | 2021-04-01 | 2021-07-09 | 普联技术有限公司 | Data communication method and device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150280953A1 (en) * | 2013-06-07 | 2015-10-01 | Broadcom Corporation | Data and pilot sub-carrier or tone design for OFDM/OFDMA in wireless communications |
| WO2015149348A1 (en) * | 2014-04-04 | 2015-10-08 | 华为技术有限公司 | Method and device for adjusting data transmission rate |
| US20150365922A1 (en) * | 2014-06-12 | 2015-12-17 | Huawei Technologies Co., Ltd. | System and Method for OFDMA Tone Allocation in Next Generation Wi-Fi Networks |
| CN106487737A (en) * | 2015-08-26 | 2017-03-08 | 华为技术有限公司 | The method and apparatus of transmission HE-LTF sequence |
| CN107509252A (en) * | 2016-06-14 | 2017-12-22 | 华为技术有限公司 | A kind of data transmission method and device |
| CN109600205A (en) * | 2017-09-30 | 2019-04-09 | 华为技术有限公司 | A kind of data transmission method and device |
| US20190124556A1 (en) * | 2017-10-20 | 2019-04-25 | Qualcomm Incorporated | Multiplexing clients of different generations in trigger-based transmissions |
| US20190238377A1 (en) * | 2015-06-02 | 2019-08-01 | Newracom, Inc. | Random access ppdu for wlan systems |
-
2019
- 2019-10-31 CN CN201911055406.9A patent/CN110784297B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150280953A1 (en) * | 2013-06-07 | 2015-10-01 | Broadcom Corporation | Data and pilot sub-carrier or tone design for OFDM/OFDMA in wireless communications |
| WO2015149348A1 (en) * | 2014-04-04 | 2015-10-08 | 华为技术有限公司 | Method and device for adjusting data transmission rate |
| US20150365922A1 (en) * | 2014-06-12 | 2015-12-17 | Huawei Technologies Co., Ltd. | System and Method for OFDMA Tone Allocation in Next Generation Wi-Fi Networks |
| US20190238377A1 (en) * | 2015-06-02 | 2019-08-01 | Newracom, Inc. | Random access ppdu for wlan systems |
| CN106487737A (en) * | 2015-08-26 | 2017-03-08 | 华为技术有限公司 | The method and apparatus of transmission HE-LTF sequence |
| CN107509252A (en) * | 2016-06-14 | 2017-12-22 | 华为技术有限公司 | A kind of data transmission method and device |
| CN109600205A (en) * | 2017-09-30 | 2019-04-09 | 华为技术有限公司 | A kind of data transmission method and device |
| US20190124556A1 (en) * | 2017-10-20 | 2019-04-25 | Qualcomm Incorporated | Multiplexing clients of different generations in trigger-based transmissions |
Non-Patent Citations (1)
| Title |
|---|
| JIYANG BAI: "An adaptive grouping scheme in ultra-dense IEEE 802.11ax network using buffer state report based two-stage mechanism", 《CHINA COMMUNICATIONS》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113099536A (en) * | 2021-04-01 | 2021-07-09 | 普联技术有限公司 | Data communication method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110784297B (en) | 2022-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110365765B (en) | Bandwidth scheduling method and device of cache server | |
| CN110166168B (en) | Method, device and system for determining size of transmission block | |
| CN107615846B (en) | Method, device and system for resource allocation and base station | |
| CN112039799B (en) | Network bandwidth management method, server, system, equipment and medium | |
| CN111600967A (en) | Access pressure-based load balancing system among block chain nodes | |
| CN110035016A (en) | A kind of data transmission method and device | |
| CN110784297B (en) | Resource unit allocation method and device | |
| JP2020532167A (en) | Transmission block size identification method, equipment and devices | |
| CN109328477A (en) | User terminal, wireless base station and wireless communications method | |
| US11943631B2 (en) | Spectrum device, wireless communication system, wireless communication method and storage medium | |
| CN103889000B (en) | A kind of method for channel allocation and device | |
| EP1903736A2 (en) | Transmitting device using multicarrier transmission system and receiving device | |
| CN109246828A (en) | Downlink business processing method, base station and user equipment in multi-sub-band system | |
| CN113099259B (en) | Multicast transmission method and device of streaming media, multicast server and medium | |
| CN106537865B (en) | A kind of convergence frame transmission method, device and system | |
| CN113645662A (en) | Service processing method and device | |
| US10420076B2 (en) | Resource allocation method and device and information feedback method and device | |
| CN108631833B (en) | Uplink precoding transmission method and device and user equipment | |
| US20210022169A1 (en) | Resource allocation method and apparatus, base station, and user equipment | |
| CN113766650B (en) | Internet resource obtaining method and system based on dynamic balance | |
| CN112738270B (en) | File transmission method, device, equipment and storage medium | |
| CN110971556A (en) | Signal processing method of wireless communication system, terminal equipment and network equipment | |
| EP3209057B1 (en) | Data transmission method, device and system | |
| JP2016144209A (en) | Multicarrier modulation signal bit allocation method, device and system | |
| CN111988818A (en) | Resource allocation method, device and computer readable storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |