CN114051260B - Signal simulation method and device for wireless connection aggregation MAC layer protocol data unit - Google Patents
Signal simulation method and device for wireless connection aggregation MAC layer protocol data unit Download PDFInfo
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Abstract
The invention belongs to the technical field of wireless communication testing, and provides a signal simulation method and device for wireless connection aggregation MAC layer protocol data units. Wherein the method comprises simulating communication data transmitted simultaneously by a plurality of user terminals; simulating a process of simultaneously carrying out data interaction on corresponding user terminal-communication terminal channels by communication data transmitted by a plurality of user terminals based on the aggregate MAC layer protocol data unit; the generation process of the aggregate MAC layer protocol data unit is as follows: clustering parameters generated by aggregating the MAC layer protocol data units in the multi-user scene into three types of parameters according to the parameter attributes; the first type of parameters are user configuration types, the second type of parameters are aggregation MAC layer protocol data setting types, and the third type of parameters are MAC head setting types; correspondingly integrating the first type parameters and the second type parameters into a first list and a second list respectively; the second type parameter setting item is configured as an attribute column of the first list; the third type of parameter setting item is configured as an attribute column of the second list.
Description
Technical Field
The invention belongs to the technical field of wireless communication testing, and particularly relates to a signal simulation method and device for wireless connection aggregation MAC layer protocol data units.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the rapid growth of the number of handheld electronic devices and the continuous development of wireless network services, wireless local area networks are increasingly expected to have higher rates. In order to improve throughput of the MAC layer, the IEEE 802.11n standard proposes to aggregate MAC layer protocol data units (a-MPDUs), and this technology is adopted by the WIFI standard that is currently up to date. The A-MPDU aggregates the MAC layer protocol data units (MPDUs) encapsulated by the 802.11 messages, and reduces the Physical Layer Convergence Protocol (PLCP) preamble and PLCP header required for transmitting each 802.11 message by transmitting a plurality of MPDUs at one time, thereby improving the throughput of the system. The generation of the physical layer protocol data unit (PPDU) needs to be performed according to the protocol specification. In 802.11ac and 802.11ax protocol multi-user transmission scenarios, each user may implement data transmission based on a-MPDU technology. Each a-MPDU contains several MPDUs, each having a respective MAC header.
The inventor finds that the signal simulation efficiency of the wireless connection aggregation MAC layer protocol data unit is low at present, and the reason is mainly as follows: in the process of generating the wireless connection aggregation MAC layer protocol data unit, the data processing logic based on the protocol standard is not fully considered, the relation among different types of parameters in the parameter setting item list is more scattered and disordered, the operation process is more complicated, and more time is required to be spent in the process of generating the A-MPDU data, so that the signal simulation efficiency of the wireless connection aggregation MAC layer protocol data unit is reduced.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a signal simulation method and a signal simulation device for a wireless connection aggregation MAC layer protocol data unit, which are based on design parameter setting logic and arrangement layout of parameter items on the basis of fully considering parameter item classification and operation convenience, so that the parameter item distribution of a setting interface is more compact, and the parameter setting process of the interface is avoided from being switched back and forth too much, thereby improving the signal simulation efficiency of the wireless connection aggregation MAC layer protocol data unit.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a first aspect of the present invention provides a signal simulation method for aggregating MAC layer protocol data units over a wireless connection, which includes:
simulating communication data transmitted by a plurality of user terminals simultaneously;
simulating a process of simultaneously carrying out data interaction on corresponding user terminal-communication terminal channels by communication data transmitted by a plurality of user terminals based on the aggregate MAC layer protocol data unit;
the signal simulation process of the aggregate MAC layer protocol data unit is as follows:
clustering parameters generated by aggregating the MAC layer protocol data units in the multi-user scene into three types of parameters according to the parameter attributes; the first type of parameters are user configuration types, the second type of parameters are aggregate MAC layer protocol data setting types, and the third type of parameters are MAC head setting types;
correspondingly integrating the first type parameters and the second type parameters into a first list and a second list respectively; the number of lines of the first list is the number of users, and each first type parameter is configured as an attribute column of the first list; the second type parameter setting item is configured as an attribute column of the first list; the number of lines of the second list is the number of second class parameters, and each second class parameter is configured as an attribute column of the second list; the third type of parameter setting item is configured as an attribute column of the second list.
A second aspect of the present invention provides a signal simulation apparatus for aggregating MAC layer protocol data units over a wireless connection, comprising:
a communication data simulation module for simulating communication data transmitted by a plurality of user terminals simultaneously;
the data simulation interaction module is used for simulating the process of simultaneously carrying out data interaction on the corresponding user terminal-communication terminal channels by communication data transmitted by a plurality of user terminals based on the aggregate MAC layer protocol data unit;
the signal simulation process of the aggregate MAC layer protocol data unit is as follows:
clustering parameters generated by aggregating the MAC layer protocol data units in the multi-user scene into three types of parameters according to the parameter attributes; the first type of parameters are user configuration types, the second type of parameters are aggregate MAC layer protocol data setting types, and the third type of parameters are MAC head setting types;
correspondingly integrating the first type parameters and the second type parameters into a first list and a second list respectively; the number of lines of the first list is the number of users, and each first type parameter is configured as an attribute column of the first list; the second type parameter setting item is configured as an attribute column of the first list; the number of lines of the second list is the number of second class parameters, and each second class parameter is configured as an attribute column of the second list; the third type of parameter setting item is configured as an attribute column of the second list.
A third aspect of the present invention provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps in a signal simulation method for aggregating MAC layer protocol data units over a wireless connection as described above.
A fourth aspect of the invention provides a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps in a signal simulation method for aggregating MAC layer protocol data units for wireless connections as described above when the program is executed.
Compared with the prior art, the invention has the beneficial effects that:
in the process of aggregating the MAC layer protocol data units, the logic relevance between the data processing logic described by the WIFI protocol standard and the parameter items is fully considered, the setting function is reasonably designed, the parameter setting items are distributed more compactly, and the operation logic is improved; integrating the user configuration parameters into a user parameter list, taking an A-MPDU setting function in a multi-user scene as an attribute list of the user configuration parameters list, avoiding switching pages back and forth when setting the A-MPDU data of the user, and improving the logical relevance and operation convenience of the functions such as the user configuration parameters setting and the A-MPDU setting; the MAC header setting function is used as an attribute column of the A-MPDU data setting class parameter list, so that the logical association between the A-MPDU data setting and the MAC header setting is enhanced, and the signal simulation efficiency of the wireless connection aggregation MAC layer protocol data unit is improved.
Additional aspects of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
Fig. 1 is a first type a-MPDU data generating device interface;
fig. 2 is a user configuration interface of a second class a-MPDU data generating device;
fig. 3 is an a-MPDU data set-up interface of a second class a-MPDU data generating device;
fig. 4 is a MAC header setup interface of a second class a-MPDU data generating device;
FIG. 5 is a user configuration class parameter list;
fig. 6 is an a-MPDU data set for a certain user;
fig. 7 is a MAC header setup interface;
fig. 8 is a data domain processing flow when BCC encodes UL transmission or DL non-MU-MIMO transmission scenarios;
FIG. 9 is a data domain processing flow when LDPC coded UL transmissions or DL non-MU-MIMO transmission scenarios;
fig. 10 is a data domain processing flow when BCC encodes DL MU-MIMO transmission scenario;
FIG. 11 is a data domain processing flow in a DL MU-MIMO transmission scenario in LDPC encoding;
fig. 12 is a data domain processing flow of the 160MHz bandwidth HE SU PPDU format;
fig. 13 is a data field processing flow of the 80+80mhz bandwidth HE SU PPDU format;
fig. 14 is a flowchart of a signal simulation method for aggregating MAC layer protocol data units for wireless connection according to an embodiment of the present invention;
fig. 15 is a schematic diagram of a signal simulation system of a wireless connection aggregation MAC layer protocol data unit according to an embodiment of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Example 1
Referring to fig. 14, the present embodiment provides a signal simulation method for aggregating MAC layer protocol data units by wireless connection, which specifically includes the following steps:
s101: simulating communication data transmitted by a plurality of user terminals simultaneously;
s102: based on the aggregate MAC layer protocol data unit, simulating the process of simultaneously carrying out data interaction on the corresponding user terminal-communication terminal channels by the communication data transmitted by a plurality of user terminals.
Among them, an aggregate MAC layer protocol data unit (a-MPDU) is an important component of a physical layer protocol data unit (PPDU), and an a-MPDU generating apparatus is often further called by a PPDU generation setting function. In the multi-user transmission scenario of the 802.11ac and 802.11ax protocols, the a-MPDU generating means may also be invoked by a multi-user data configuration setup function.
At present, the configuration methods of wireless connection aggregation MAC layer protocol data units are mainly divided into two main categories. The first category presents the individual parameter items required for a-MPDU generation mainly in the form of a list. According to the type and the level of the parameters, classifying different types of parameters of the same level into the same level of a list, and then respectively subdividing the parameters of each level step by step. The parameters of each stage are mainly presented in a list form, and if more parameters need to be set in the same stage, the parameters are presented in pop-up boxes, list blocks, schematic diagrams and the like. As shown in fig. 1.
In fig. 1, the parameters are divided into three types, namely User Configuration (user configuration), modulation and Coding (modulation and coding scheme), transmit Data (transmission Data), and each type of parameters is subdivided into one class of parameters, and the a-MPDU Data set type parameters are presented in the form of list blocks. The parameter classification of the generating device is performed according to the thought of a device designer and is not based on the logic of a protocol standard, so that a coupling relation exists between parameters of different classes, for example, a User Index parameter in a User configuration class parameter is coupled with an Aggreated MPDU parameter in a transmission data class parameter, and Channel Coding Mode (channel Coding mode) and Channel Coding State (channel Coding state) in the User configuration class parameter are both coupled with a Coding Rate in the transmission data class parameter. These problems illustrate that the parameter classification list does not reasonably classify individual parameters, but rather causes the relationships between parameters to become scattered and confused.
Another a-MPDU data generating device is more concerned with the logic of the protocol standard and classifies the same type of parameters as one category as much as possible. Firstly, calling an A-MPDU data generation module through the setting of parameters such as a PPDU data source type, a multi-user switch and the like, and then setting user configuration type parameters, A-MPDU data setting and MAC head setting as a single page respectively, wherein the association relation among the parameters is presented in the forms of page switching and pop-up boxes respectively as shown in figures 2-4.
The second type of a-MPDU data configuration method separates different types of parameters, but requires to switch pages back and forth in the setting of the a-MPDU data generating process, so that the setting process is more complicated and takes more time. For example, in order to set a-MPDU data of 1 user, it is necessary to switch back and forth in three pages once, and if a-MPDU data of a plurality of users is required to be set, the number of page switch times is greater. Meanwhile, a user needs to have deeper knowledge of protocol standards to understand the parameter setting and page switching logic of the device.
In this embodiment, the generation process of the aggregate MAC layer protocol data unit is:
clustering parameters generated by aggregating the MAC layer protocol data units in the multi-user scene into three types of parameters according to the parameter attributes; the first type of parameters are user configuration types, the second type of parameters are aggregate MAC layer protocol data setting types, and the third type of parameters are MAC head setting types;
correspondingly integrating the first type parameters and the second type parameters into a first list and a second list respectively; the number of lines of the first list is the number of users, and each first type parameter is configured as an attribute column of the first list; the second type parameter setting item is configured as an attribute column of the first list; the number of lines of the second list is the number of second class parameters, and each second class parameter is configured as an attribute column of the second list; the third type of parameter setting item is configured as an attribute column of the second list.
In a specific implementation, the first list is associated with a second list by a second type of parameter setting item. This can enhance the convenience of the operation process. The second list is associated with a MAC header settings class settings page through a third class of parameter settings.
The first list is a user configuration class parameter list; the second list is an a-MPDU data type parameter list, i.e. an a-MPDU data type parameter setting interface, as shown in fig. 5 and 6, respectively.
As can be seen from fig. 6, the a-MPDU data setting interface may set the number of MPDUs and the a-MPDU length, and present a-MPDU data class parameters in the form of a parameter list. The number of lines of the list is MPDU number, each A-MPDU data class is used as each attribute column of the parameter list, the MAC header is set as one attribute column of the list, and the poppable MAC header setting parameter item is clicked. The MAC header setup interface is shown in fig. 7.
In this embodiment, the MAC header setting class setting page includes a frame control subfield and a high throughput control subfield secondary parameter setting tag. Different high throughput control subfield parameter settings are presented according to different protocol standards.
In fig. 7, a schematic diagram of the MAC header and various parameter items are shown above the interface, and the "frame control subfield" and the "high throughput control subfield" in the middle part are respectively the two-level parameter setting functions of the MAC header setting, and can be switched by tab tags on the sides in the figure. The "high throughput control subdomain" formats of 802.11n, 802.11ac, 802.11ax are different according to the WIFI protocol standard, so that in the actual setting process, different "high throughput control subdomain" parameter setting items are presented according to different protocol standards.
The a-MPDU is the Data carried in the PPDU, i.e., PPDU Data Field (Data Field), and the main purpose of each Field of the PPDU preamble is to enable the PPDU Data Field to be correctly received and processed by the receiving end. The generation of PPDU data fields mainly comprises the following processes: 1) Filling before FEC coding; 2) A SERVICE field generation; 3) Scrambling SERVICE field, PSDU, pre-FEC PHY padding bits; 4) FEC coding (BCC or LDPC); 5) Stream player; 6) Segment server; 7) BCC interleaving; 8) Constellation mapping; 9) LDPC tone mapper;10 Segment deperser; 11 Space-time block coding; 12 Inserting a pilot; 13 OFDM modulation; 14 DCM (dual carrier modulation); 15 Inserts midambles.
Depending on the data coding scheme, whether MU-MIMO is used or not, channel bandwidth, etc., all of the above 15 steps may not be performed, and will be described below.
The BCC encoded UL transmission or DL non-MU-MIMO transmission scenario is applicable for two application scenarios: 1) UL transmission or DL non-MU-MIMO data field transmission using BCC coding and RU sizes of 26, 52, 106 or 242 tone, only one frequency segment (frequency segment) and the number of spatial streams is 4 or less; 2) The data field of the HE SU PPDU, the data field of the HE ER SU PPDU, the data field of the HE MU PPDU (requiring that each RU can only be associated with one user), the data field of the HE TB PPDU (whether spatially multiplexed with other users or not). The flow of data processing for the data field at this time is shown in fig. 8.
The LDPC coded UL transmission or DL non-MU-MIMO transmission scenario is applicable to two application scenarios: 1) UL transmission or DL non-MU-MIMO data field transmission, using LDPC coding and RU sizes of 26, 52, 106, 242, 484, or 996 tone, only one frequency segment); 2) The data field of the HE SU PPDU, the data field of the HE ER SU PPDU, the data field of the HE MU PPDU (requiring that each RU can only be associated with one user), the data field of the HE TB PPDU (whether spatially multiplexed with other users or not). The flow of data processing for the data field at this time is shown in fig. 9.
The BCC encoded DL MU-MIMO transmission scenario is applicable to two application scenarios: 1) DL MU-MIMO data field transmission using BCC coding and RU size 106 or 242 tone; 2) One RU may be associated with one or more users for data domain transmission of the HE MU PPDU. The flow of data processing for the data field at this time is shown in fig. 10.
The DL MU-MIMO transmission scene during LDPC coding is applicable to the following two application cases: 1) DL MU-MIMO data field transmission using LDPC coding and RU sizes of 106, 242, 484 or 996 tone; 2) One RU may be associated with one or more users in the Data field of the HE MU PPDU. The flow of data processing for the data field at this time is shown in fig. 11.
The 160MHz bandwidth HE SU PPDU format scenario is applicable to data domain transmission of the HE SU PPDU at 160MHz channel bandwidth and uses LDPC coding. The flow of data processing for the data field at this time is shown in fig. 12.
The 80+80mhz bandwidth HE SU PPDU format scenario is applicable to data domain transmission of HE SU PPDUs at 80+80mhz channel bandwidth and uses LDPC coding. The flow of data processing for the data field at this time is shown in fig. 13.
Example two
Referring to fig. 15, the embodiment provides a signal simulation device for aggregating MAC layer protocol data units by wireless connection, which specifically includes the following modules:
a communication data simulation module for simulating communication data transmitted by a plurality of user terminals simultaneously;
and the data simulation interaction module is used for simulating the process of simultaneously carrying out data interaction on the corresponding user terminal-communication terminal channels on the basis of the communication data transmitted by the plurality of user terminals based on the aggregate MAC layer protocol data unit.
The signal simulation process of the aggregate MAC layer protocol data unit is as follows:
clustering parameters generated by aggregating the MAC layer protocol data units in the multi-user scene into three types of parameters according to the parameter attributes; the first type of parameters are user configuration types, the second type of parameters are aggregate MAC layer protocol data setting types, and the third type of parameters are MAC head setting types;
correspondingly integrating the first type parameters and the second type parameters into a first list and a second list respectively; the number of lines of the first list is the number of users, and each first type parameter is configured as an attribute column of the first list; the second type parameter setting item is configured as an attribute column of the first list; the number of lines of the second list is the number of second class parameters, and each second class parameter is configured as an attribute column of the second list; the third type of parameter setting item is configured as an attribute column of the second list.
Wherein the first list is associated with a second list by a second type of parameter setting item.
The second list is associated with a MAC header settings class settings page through a third class of parameter settings.
It should be noted that, each module in the embodiment corresponds to each step in the first embodiment one to one, and the implementation process is the same, which is not described here.
Example III
The present embodiment provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps in a signal simulation method for aggregating MAC layer protocol data units for wireless connections as described above.
Example IV
The embodiment provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the steps in the signal simulation method of the wireless connection aggregation MAC layer protocol data unit.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A signal simulation method for aggregating MAC layer protocol data units in a wireless connection, comprising:
simulating communication data transmitted by a plurality of user terminals simultaneously;
simulating a process of simultaneously carrying out data interaction on corresponding user terminal-communication terminal channels by communication data transmitted by a plurality of user terminals based on the aggregate MAC layer protocol data unit;
the generation process of the aggregate MAC layer protocol data unit is as follows:
clustering parameters generated by aggregating the MAC layer protocol data units in the multi-user scene into three types of parameters according to the parameter attributes; the first type of parameters are user configuration types, the second type of parameters are aggregate MAC layer protocol data setting types, and the third type of parameters are MAC head setting types;
correspondingly integrating the first type parameters and the second type parameters into a first list and a second list respectively; the number of lines of the first list is the number of users, and each first type parameter is configured as an attribute column of the first list; the second type parameter setting item is configured as an attribute column of the first list; the number of lines of the second list is the number of second class parameters, and each second class parameter is configured as an attribute column of the second list; the third type of parameter setting item is configured as an attribute column of the second list;
the first list is associated with a second list through a second type of parameter setting item;
the second list is associated with a MAC header setting class setting page through third class parameter settings;
the first list is a user configuration class parameter list; the second list is an A-MPDU data type parameter list, namely an A-MPDU data type parameter setting interface;
the A-MPDU data setting interface can set the number of MPDUs and the length of the A-MPDUs, and present the parameters of the A-MPDU data class in the form of a parameter list; the number of lines of the list is MPDU number, each A-MPDU data class is used as each attribute column of the parameter list, the MAC header is set as one attribute column of the list, and the poppable MAC header is clicked to set a parameter item;
the MAC header setting class setting page comprises a frame control subdomain and a high throughput control subdomain secondary parameter setting label;
different high throughput control subfield parameter settings are presented according to different protocol standards.
2. A signal simulation device for aggregating MAC layer protocol data units over a wireless connection, implemented by the signal simulation method for aggregating MAC layer protocol data units over a wireless connection according to claim 1, comprising:
a communication data simulation module for simulating communication data transmitted by a plurality of user terminals simultaneously;
the data simulation interaction module is used for simulating the process of simultaneously carrying out data interaction on the corresponding user terminal-communication terminal channels by communication data transmitted by a plurality of user terminals based on the aggregate MAC layer protocol data unit;
the signal simulation process of the aggregate MAC layer protocol data unit is as follows:
clustering parameters generated by aggregating the MAC layer protocol data units in the multi-user scene into three types of parameters according to the parameter attributes; the first type of parameters are user configuration types, the second type of parameters are aggregate MAC layer protocol data setting types, and the third type of parameters are MAC head setting types;
correspondingly integrating the first type parameters and the second type parameters into a first list and a second list respectively; the number of lines of the first list is the number of users, and each first type parameter is configured as an attribute column of the first list; the second type parameter setting item is configured as an attribute column of the first list; the number of lines of the second list is the number of second class parameters, and each second class parameter is configured as an attribute column of the second list; the third type of parameter setting item is configured as an attribute column of the second list.
3. The signal simulation apparatus of wireless connection aggregate MAC layer protocol data unit of claim 2, wherein the first list is associated with a second list through a second type of parameter setting item.
4. The signal emulation device of claim 2, wherein said second list is associated with a MAC header set class settings page by a third class parameter setting.
5. A computer readable storage medium having stored thereon a computer program, which when executed by a processor performs the steps in the signal simulation method of aggregating MAC layer protocol data units for a wireless connection as claimed in claim 1.
6. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor performs the steps in the signal simulation method of wireless connection aggregate MAC layer protocol data units as claimed in claim 1.
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| CN109155688A (en) * | 2016-04-14 | 2019-01-04 | 马维尔国际贸易有限公司 | Signaling data unit format parameters for multi-user transmission |
| WO2020009389A1 (en) * | 2018-07-04 | 2020-01-09 | 엘지전자 주식회사 | Method and device for transmitting ppdu in wireless lan system |
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