CN115734395A - Data transmission method, terminal, system and storage medium in multi-link system - Google Patents
Data transmission method, terminal, system and storage medium in multi-link system Download PDFInfo
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Abstract
The application discloses a data transmission method, a terminal, a system and a storage medium in a multilink system, wherein the method comprises the following steps: the method comprises the steps that a multilink terminal obtains target parameters of first access equipment and second access equipment in a preset time period, wherein the multilink terminal is connected with the first access equipment and the second access equipment respectively, and the target parameters are used for representing at least one of signal quality, network load and transmission performance; transmitting data to be transmitted to second access equipment only under the condition that target parameters of first access equipment and second access equipment meet preset conditions; and under the condition that the target parameters of the first access equipment and the second access equipment do not meet the preset conditions, only sending the data to be transmitted to the first access equipment.
Description
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a method, a terminal, a system, and a storage medium for data transmission in a multi-link system.
Background
As the number of users increases, the number of application types increases, the traffic demand increases, and the requirements on the throughput and the delay of the network become higher and higher. An Extra High Throughput (EHT) Network can guarantee the performance of a Wireless Local Area Network (WLAN) by further increasing the overall Throughput and reducing the delay.
Specifically, the multilink terminal in the WLAN may include a plurality of logical data transceiving terminals (STAs), each STA may establish a data transmission link with a logical Access Point (AP), and the multilink terminal implements data transmission through a plurality of links.
In the related art, since a plurality of logical access points connected to a plurality of STAs in a multilink terminal belong to the same multilink access device, when data transmission is performed in a multilink system, data transmission between the multilink terminal and the same multilink access device is limited, and network resources cannot be effectively utilized.
Disclosure of Invention
An embodiment of the present application provides a data transmission method, a terminal, a system, and a storage medium in a multi-link system, which can solve a problem that network resources cannot be effectively utilized in related technologies.
In a first aspect, an embodiment of the present application provides a data transmission method in a multilink system, which is applied to a multilink terminal, and the method includes: acquiring target parameters of first access equipment and second access equipment in a preset time period, wherein a multilink terminal is respectively connected with the first access equipment and the second access equipment, and the target parameters are used for representing at least one of signal quality, network load and transmission performance; under the condition that target parameters of the first access equipment and the second access equipment meet preset conditions, only sending data to be transmitted to the second access equipment; and under the condition that the target parameters of the first access equipment and the second access equipment do not meet the preset conditions, only sending the data to be transmitted to the first access equipment.
In a second aspect, an embodiment of the present application provides a multi-link terminal, including: the device comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring target parameters of first access equipment and second access equipment in a preset time period, the multilink terminal is respectively connected with the first access equipment and the second access equipment, and the target parameters are used for representing at least one of signal quality, network load and transmission performance; the sending module is used for sending the data to be transmitted only to the second access equipment under the condition that the target parameters of the first access equipment and the second access equipment meet preset conditions; and the sending module is further used for sending the data to be transmitted only to the first access equipment under the condition that the target parameters of the first access equipment and the second access equipment do not meet the preset conditions.
In a third aspect, an embodiment of the present application provides a multi-link system, including the multi-link terminal in the second aspect.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where computer program instructions are stored on the computer-readable storage medium, and when the computer program instructions are executed by a processor, the method for transmitting data in a multi-link system according to the first aspect is implemented.
The present application provides a data transmission method, a terminal, a system, and a storage medium in a multilink system, where a multilink terminal may be connected to a first access device and a second access device, and the first access device and the second access device may be different physical devices, for example, the first access device and the second access device may be two single-link access devices, or the first access device and the second access device belong to different multilink access devices, so that the multilink terminal is no longer limited to be connected to only the same multilink access device, and may also be connected to multiple single-link access devices, or multiple different multilink access devices. On the basis, the data transmission is carried out between the multilink terminal and the first access equipment and between the multilink terminal and the second access equipment, so that the application scene of the multilink terminal in data transmission is expanded, and the utilization rate of network resources by the multilink terminal is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is an architecture diagram of an example of a multilink system provided by an embodiment of the present application;
fig. 2 is a schematic structural diagram of a multi-link terminal according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart of a data transmission method in a multilink system according to an embodiment of the present disclosure;
fig. 4 is a schematic flowchart of another data transmission method in a multi-link system according to an embodiment of the present application;
fig. 5 is a schematic flowchart of a data transmission method in a multi-link system according to another embodiment of the present application;
fig. 6 is a schematic flowchart of a data transmission method in a multi-link system according to an embodiment of the present application;
fig. 7 is a schematic flowchart of a data transmission method in a multi-link system according to another embodiment of the present application;
fig. 8 is a schematic structural diagram of another multi-link terminal provided in an embodiment of the present application;
fig. 9 is a schematic hardware structure diagram of an apparatus according to an embodiment of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative only and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
With the increase of the requirements on the network performance, in order to improve the performance of the network, such as throughput, delay, and the like, a plurality of data transmission links may be established between the multi-link terminal and the network access device. The multi-link terminal may include a plurality of logical terminals (stations, STAs). The network access device may comprise a multi-link access device. The multi-link access device may include a plurality of logical access points. A data transmission link can be established between the logic terminal and the logic access point, namely a plurality of data transmission links can be established between the multilink terminal and the multilink access equipment, and data transmission is realized through the plurality of data transmission links, so that the data transmission efficiency is improved, and the high throughput of the network is realized. For convenience of explanation, the data transmission link is simply referred to as a link. The multilink terminal mentioned below is a multilink terminal including at least two logical terminals, and the multilink access device is a network device including at least two logical access points.
As described in the background art, in the related art, a plurality of logical access points connected to a plurality of STAs in a multilink terminal belong to the same multilink access device, and therefore, when data transmission is performed in a multilink system, data transmission is limited between the multilink terminal and the same multilink access device, and the multilink terminal cannot be connected to different multilink access devices or cannot be connected to a single-link access device to perform data transmission, so that network resources cannot be effectively utilized.
In order to solve the problems in the related art, an embodiment of the present application provides a data transmission method in a multilink system, where a multilink terminal may be connected to a first access device and a second access device, and the first access device and the second access device are two different physical devices, for example, the first access device and the second access device may be two single-link access devices, or the first access device and the second access device belong to different multilink access devices, so that the multilink terminal is no longer limited to be connected to only the same multilink access device, and may also be connected to multiple single-link access devices, or multiple different multilink access devices. On the basis, the data transmission is carried out between the multilink terminal and the first access equipment and between the multilink terminal and the second access equipment, so that the application scene of the multilink terminal in data transmission is expanded, the utilization rate of network resources by the multilink terminal is improved, and the problem that the network resources cannot be effectively utilized in the related technology is solved.
In some examples, the data transmission method, the terminal, the system and the storage medium in the multi-link system provided by the present application may be applied to an Extremely High Throughput (EHT) network, where the EHT network has a higher Throughput, higher reliability and less delay and jitter. The data transmission method in the multilink system in the embodiment of the application can be compatible with the old version technology and backward compatibility, and can be compatible with devices operating in frequency bands of 2.4GHz,5GHz, 6GHz and the like.
The following describes in detail a data transmission method in a link system according to an embodiment of the present application with reference to the accompanying drawings and specific embodiments and application scenarios thereof.
The data transmission method in the multilink system provided in the embodiment of the present application may be applied to the architecture shown in fig. 1, and is specifically described in detail with reference to fig. 1.
Fig. 1 is an architecture diagram of an example of a multilink system provided in an embodiment of the present application. As shown in fig. 1, the multi-link system 10 may include a multi-link terminal 11, a first access device 12, a second access device 13, and a server 14. A Link1 can be established between a logical terminal STA1 in the multilink terminal 11 and the first access device 12, a Link2 can be established between a logical terminal STA2 in the multilink terminal 11 and the second access device 13, and the first access device 12 and the second access device 13 are respectively connected with the server 14.
The first access device 12 and the second access device 13 are different physical devices.
Optionally, the first access device 12 and the second access device 13 may be both single-link access devices; alternatively, the first access device 12 may be a single-link access device, and the second access device 13 may be a logical access point in a multi-link access device; alternatively, the first access device 12 may be a logical access point in a multi-link access device, and the second access device 13 may be a single-link access device; alternatively, the first access device 12 and the second access device 13 may be logical access points in different multi-link access devices.
In some embodiments of the present application, after receiving data sent by the multilink terminal 11, the first access device 12 and the second access device 13 may directly send the data to the server 14, and data transmission is not required between the first access device 12 and the second access device 13, so that transmission time of the data between the access devices is saved, and transmission delay is reduced.
Illustratively, the server 14 may be a Distributed Server (DS).
It should be noted that fig. 1 is only an example, and the number of logical terminals in the multi-link terminal 11 and the number of the first access device 12 and the second access device 13 connected to the multi-link terminal 11 are not limited in the embodiment of the present application.
In some embodiments of the present application, fig. 2 is a schematic structural diagram of an example of a multi-link terminal provided in an embodiment of the present application. As shown in fig. 2, the multi-link terminal 11 may include an upper-layer Medium Access Control (U-MAC) module, a lower-layer Medium Access Control (L-MAC) module, and a Physical (PHY) module.
The U-MAC module has the functions of authentication and connection, key generation, frame serial number distribution, frame encryption and decryption, data packet recording and reordering, selection of an L-MAC module for sending data, information interaction with the L-MAC module and the like; the L-MAC module has the functions of interaction and indication of management information and control information of a link level; the PHY module has functions of determining parameters for transmitting and receiving data packets, and the like.
Illustratively, the link-level management information may include beacon messages, and the link-level control information may include Request To Send (RTS) frames and Clear To Send (CTS) frames.
Referring to fig. 2, the logical terminal STA1 may include an L-MAC1 module and a PHY1 module, and the logical terminal STA2 may include an L-MAC2 module and a PHY2 module.
According to the above-mentioned architecture, a detailed description will be given below of a data transmission method in a multi-link system provided in an embodiment of the present application.
Fig. 3 is a schematic flowchart of a data transmission method in a multilink system according to an embodiment of the present application, where an execution main body of the data transmission method in the multilink system may be a multilink terminal in the multilink system. The above-described execution body does not constitute a limitation of the present application.
As shown in fig. 3, the method for transmitting data in a multi-link system provided by the embodiment of the present application may include steps 310 to 330.
The multi-link terminal may be connected to the first access device and the second access device, respectively, and the target parameter may be used to characterize at least one of signal quality, network load, and transmission performance.
Illustratively, the parameters characterizing the Signal Quality may include Signal strength, signal to Interference plus Noise Ratio (SINR), reference Signal Receiving Quality (RSRQ), etc., the parameters characterizing the network load may include the amount of data to be transmitted, etc., and the parameters characterizing the transmission performance may include data transmission speed, transmission delay, network throughput, etc.
The first access device and the second access device may be access devices connected with a multilink terminal.
Illustratively, the first access device may be 12 in fig. 1 and the second access device may be 13 in fig. 1.
The preset time period may be set according to specific requirements, and the application is not specifically limited herein.
And 320, sending the data to be transmitted only to the second access equipment under the condition that the target parameters of the first access equipment and the second access equipment meet preset conditions.
And 330, sending the data to be transmitted only to the first access equipment under the condition that the target parameters of the first access equipment and the second access equipment do not meet the preset conditions.
In the data transmission method in the multilink system provided in the embodiment of the present application, the multilink terminal may be connected to the first access device and the second access device, and the first access device and the second access device may be different physical devices, for example, the first access device and the second access device may be two single-link access devices, or the multilink access devices to which the first access device and the second access device belong are different, so that the multilink terminal is no longer limited to be connected to only the same multilink access device, and may also be connected to multiple single-link access devices, or multiple different multilink access devices. On the basis, data transmission is carried out between the multilink terminal and the first access equipment and between the multilink terminal and the second access equipment, application scenes during data transmission of the multilink terminal are expanded, and the utilization rate of network resources by the multilink terminal is improved.
The above steps 310 to 330 are described in detail below with reference to specific embodiments.
First, in step 310, target parameters of the first access device and the second access device within a preset time period are obtained.
In some embodiments of the present application, step 310 may specifically include: measuring a target parameter of the first access device based on a first preset period; and measuring the target parameter of the second access equipment based on a second preset period.
The second preset period is less than or equal to the first preset period.
The first preset period and the second preset period may be set according to specific requirements, for example, the first preset period T1 is 30s, the second preset period T2 is 20s, and T2 is less than T1.
Next, referring to step 320, in case that the target parameters of the first access device and the second access device satisfy the preset condition, the data to be transmitted is only sent to the second access device.
In some embodiments of the present application, the target parameter may include a signal strength or a signal to interference plus noise ratio for characterizing the signal quality, and the preset condition may include that the signal strength or the signal to interference plus noise ratio of the second access device is greater than a sum of the signal strength or the signal to interference plus noise ratio of the first access device and a first preset signal threshold.
In one embodiment, the Signal Strength may be a Reference Signal Receiving Power (RSRP) or a Received Signal Strength Indication (RSSI).
Exemplarily, the first access device is AP1, the second access device is AP2, and the first preset signal threshold is A0, then the multilink terminal only sends the data to be transmitted to AP2 and does not send the data to be transmitted to AP1 under the condition that the reference signal received power RSRP2 of AP2 is greater than RSRP1 (reference signal received power of AP 1) + A0.
In the embodiment of the present application, in the case that the signal strength or the signal to interference plus noise ratio of the second access device is greater than the sum of the signal strength or the signal to interference plus noise ratio of the first access device and the first preset signal threshold within the preset time period, the multilink terminal selects the sending data of the second access device with higher signal quality and better performance, so that the second access device can directly forward the data to the server, and the efficiency of data transmission can be improved.
In some embodiments of the present application, the target parameter may include a network throughput for characterizing the transmission performance, and the preset condition may include that the network throughput of the second access device is less than a difference between the network throughput of the first access device and a first preset throughput threshold.
Exemplarily, the first access device is AP1, the second access device is AP2, and the first preset throughput threshold is B0, so that the multilink terminal only sends the data to be transmitted to AP2 and does not send the data to be transmitted to AP1 under the condition that the throughput B2 of AP2 is less than B1 (throughput of AP 1) -B0.
In the embodiment of the present application, in a case that the signal strength or the signal to interference plus noise ratio of the second access device is greater than the sum of the signal strength or the signal to interference plus noise ratio of the first access device and the first preset signal threshold within the preset time period, the multilink terminal may select the transmission data of the second access device with higher signal quality and better performance, so that the second access device may directly forward the data to the server, and the efficiency of data transmission may be improved.
In some embodiments of the present application, the target parameter may include a transmission delay characterizing transmission performance, and the preset condition includes that the transmission delay of the second access device is smaller than a difference between the transmission delay of the first access device and a first preset delay threshold.
Exemplarily, the first access device is AP1, the second access device is AP2, and the first preset delay threshold is C0, so that the multilink terminal only sends the data to be transmitted to AP2 and does not send the data to be transmitted to AP1 under the condition that the transmission delay C2 of AP2 is less than C1 (transmission delay of AP 1) -C0.
In this embodiment of the present application, in a case that the transmission delay of the second access device is smaller than the difference between the transmission delay of the first access device and the first preset delay threshold within a preset time period, the multilink terminal may select the sending data of the second access device with lower transmission delay and better performance, so that the second access device may directly forward the data to the server, and reduce the data transmission delay.
It should be noted that the first preset signal threshold, the first preset throughput threshold, and the first preset delay threshold may be set according to actual requirements, and the present application is not specifically limited herein.
In some embodiments of the present application, the target parameter may include a signal strength or a signal to interference plus noise ratio for characterizing signal quality, and the preset condition may include that the signal strength or the signal to interference plus noise ratio of the second access device is greater than a second preset signal threshold, and the signal strength or the signal to interference plus noise ratio of the first access device is less than a third preset signal threshold.
The second preset signal threshold may be the same as or different from the third preset signal threshold, and may be specifically set according to actual requirements.
Optionally, the second preset signal threshold may be greater than the third preset signal threshold.
Illustratively, the first access device is AP1, the second access device is AP2, and the second preset signal threshold D2 is greater than the first preset signal threshold D1. Then, under the condition that the SINR2 of the AP2 is greater than D2 and the SINR1 of the AP1 is less than D1, the multilink terminal only sends the data to be transmitted to the AP2, and does not send the data to be transmitted to the AP 1.
In the embodiment of the present application, under the condition that the signal strength or the signal to interference plus noise ratio of the second access device is greater than the second preset signal threshold and the signal strength or the signal to interference plus noise ratio of the first access device is less than the third preset signal threshold within the preset time period, it indicates that the signal quality of the first access device is not high, and therefore the multilink terminal may select the transmission data of the second access device with higher signal quality, so that the second access device may directly forward the data to the server, the situations of data loss and data transmission failure due to poor signals of the access devices are avoided, and the success rate of data transmission is improved.
In some embodiments of the present application, the target parameter may include a network throughput for characterizing the transmission performance, and the preset condition may include that the network throughput of the second access device is less than a second preset throughput threshold, and the network throughput of the first access device is greater than a third preset throughput threshold.
The second preset throughput threshold and the third preset throughput threshold may be the same or different, and may be specifically set according to actual requirements.
Optionally, the second preset throughput threshold may be greater than a third preset throughput threshold.
In some embodiments of the present application, the target parameter may include a transmission delay for characterizing the transmission performance, and the preset condition includes that the transmission delay of the second access device is smaller than a second preset delay threshold, and the transmission delay of the first access device is larger than a third preset delay threshold.
The second preset time delay threshold and the third preset time delay threshold may be the same or different, and may be specifically set according to actual requirements.
Optionally, the second preset delay threshold may be greater than the third preset delay threshold.
In some embodiments of the present application, the multi-link terminal may include at least two logic terminals, and in order to improve the success rate of data transmission, step 320 may specifically include: under the condition that target parameters of the first access device and the second access device meet preset conditions, an indication message and data to be transmitted are sent to the second access device through a target logic terminal of at least two logic terminals, so that the second access device sends the data to be transmitted to a server according to the indication message, wherein the target logic terminal is connected with the second access device.
Exemplarily, the indication message may be a parameter dot11mcvia as ap, and when the value of dot11mcvia as ap is true, the indication message may be used to indicate the multilink terminal to send data to the second access device, and the second access device forwards the data to the server; when the dot11mcviasa ap value is false, the data may be used to instruct the multilink terminal to send data to the first access device, and the first access device forwards the data to the server.
The following describes in detail a connection process between a multi-link terminal and a first access device and a second access device in this embodiment with reference to specific embodiments.
Fig. 4 is a schematic flowchart of another data transmission method in a multi-link system according to an embodiment of the present application, where an execution subject of the data transmission method in the multi-link system may be a multi-link terminal in the multi-link system. The above-described execution body does not constitute a limitation of the present application.
As shown in fig. 4, the data transmission method in the multi-link system provided by the embodiment of the present application may include steps 410 to 430, and it should be noted that step 410 precedes step 310.
In step 410, a first connection request message is sent to the first access device, where the first connection request message may be used for the multi-link terminal to connect with the first access device.
The first access device is an access device supporting multi-connection operation, and the first connection request message may include a first parameter, where the first parameter is used to characterize that the multi-link terminal supports multi-connection operation.
The multi-connection operation may refer to an operation of connecting one terminal to a plurality of access devices.
Illustratively, the first parameter may be MC supported. Wherein, under the condition that MC supported is 1 in the first connection request message, the multilink terminal can be characterized to support the multi-connection operation; under the condition that MC supported is 0, the multi-link terminal can be characterized not to support the multi-connection operation.
In some embodiments of the present application, the first connection request message may further include an address of the multilink terminal.
In some embodiments of the present application, as shown in fig. 5, step 410 may specifically include step 510 and step 520:
The first candidate access device may be an access device that sends a broadcast message or a probe response message, and specifically may be a single-link access device or a multi-link access device; the broadcast message may be a message sent by the first candidate access device at regular or irregular time, and each terminal may receive the broadcast message; the probe response message may be a message generated by the first candidate access device based on a probe request message sent by the multi-link terminal, that is, a response message of the probe request message, where the probe request message is used to probe whether the first candidate access device supports the multi-connection operation.
Illustratively, the broadcast message may be a Beacon frame, and the Probe response message may be a Probe response message, where the Beacon frame or the Probe response message includes a Multi connectivity capability information element, and the information element includes the second parameter.
In step 520, the first candidate access device is determined to be the first access device under the condition that the second parameter of the first candidate access device is used for characterizing that the first candidate access device supports the multi-connection operation.
The number of the first access devices may be one or at least two, and the application is not limited in this respect.
Illustratively, the second parameter may be the same as the first parameter, and the second parameter may be MC supported. Under the condition that MC supported in the broadcast message or the detection response message is 1, the first candidate access device can be characterized to support multi-connection operation; in case MC supported is 0, it may be characterized that the first candidate access device does not support multi-connection operation.
In this embodiment of the present application, the multilink terminal may receive a broadcast message or a probe response message sent by each candidate access device, and determine, based on a second parameter included in the broadcast message or the probe response message, that the first access device supporting the multi-connection operation is used to establish a connection and transmit data.
In step 420, in case of connecting with the first access device, a multi-connection configuration message sent by the first access device is received, where the multi-connection configuration message may include an address of the second access device.
In some embodiments of the present application, as shown in fig. 6, step 420 may specifically include steps 610-640:
The first response message may include a third parameter and a fourth parameter, where the third parameter is used to indicate at least one second candidate access device, and the fourth parameter is used to indicate the multi-link terminal to start uplink multi-connection operation.
The second candidate access device may be an access device specified by the first access device and requiring measurement of the multi-link terminal, and the number of the second candidate access devices may be one or at least two.
Illustratively, the third parameter may be a Measurement set, and the Measurement set may contain an address of at least one second candidate access device, which may be used to identify the second candidate access device.
Illustratively, the fourth parameter may be MC UL enabled. When the MC UL enabled in the first response message is 1, the first candidate access device may be instructed to start the uplink multi-connection operation; in the case where MC supported is 0, the first candidate access device may be instructed not to turn on the uplink multi-connection operation.
Step 620, at least one of signal strength, signal to interference plus noise ratio, network throughput, transmission delay, and network load of at least one second candidate access device is measured to obtain a measurement result.
Step 630, sending the measurement result to the first access device, so that the first access device determines the second access device from at least one second candidate access device based on the measurement result.
In step 640, a multi-connection configuration message sent by the first access device based on the measurement result is received.
Wherein the multi-connection configuration message may include an address of the second access device and a message type of the multi-connection configuration message.
For example, the multi-connection configuration message may be an MC S-AP reconfiguration message, a message Type of the MC S-AP reconfiguration message may be set to an indication, which indicates that the multi-connection configuration message is a message for adding an access device, for example, the multi-connection configuration message may be used to indicate that a second access device is added in the embodiment of the present application.
In this embodiment, after the multi-link terminal establishes a connection with the first access device, the multi-link terminal may send a measurement result to the first access device, so that the first access device determines the second access device based on the measurement result, and return a multi-connection configuration message including an address of the second access device to the multi-link terminal, so that the multi-link terminal establishes a connection with the second access device based on the multi-connection configuration message.
Step 430, sending a second connection request message to the second access device according to the address of the second access device, where the second connection request message may be used for the multi-link terminal to connect with the second access device.
In some embodiments of the present application, after step 430, the method may further comprise the steps of: and receiving a second response message sent by the second access device based on the second connection request message, wherein the second response message comprises a fifth parameter, and the fifth parameter is used for representing that the second access device accepts the connection request of the multilink terminal.
For example, the fifth parameter may be an accept assignment request, and when the accept assignment request is set to 1, the second access device may be characterized to accept the connection request of the multilink terminal.
In one embodiment, the second connection request message may include a sixth parameter and an address of the multi-link terminal.
For example, the sixth parameter may be an MC secondary association request, and the MC secondary association request may represent that the second connection request message is a request for establishing a connection with a secondary access device, where the secondary access device is the second access device.
In some embodiments of the present application, step 430 may specifically include: and sending a second connection request message to the second access equipment under the condition that the message type of the multi-connection configuration message is a preset type.
Illustratively, the preset type may be addition.
In the embodiment of the application, the link connection between the multilink terminal and the second access device can be established by sending the connection request message to the second access device, so that the multilink terminal is respectively connected with the first access device and the second access device, and therefore, the application scene of the multilink terminal can be expanded, the multilink terminal is not limited to be connected with the same multilink access device any more, the multilink terminal is prevented from competing for the same multilink access device with other terminals, and network resources such as single-link access devices or other multilink access devices are effectively utilized.
It should be noted that the first parameter, the second parameter, the third parameter, the fourth parameter, the fifth parameter, and the sixth parameter in the embodiments of the present application are not limited to the examples given in the present application, and may also take other expression forms, and the embodiments of the present application are not specifically limited herein.
In the above embodiment, the multilink terminal is used as an execution subject to perform the description of the data transmission method in the multilink system of the present application, and the first access device is used as an execution subject to describe the data transmission method in the multilink system provided by the present application. The terms in the embodiments of the present application that are consistent with the embodiments described above are not repeated herein for brevity.
Fig. 7 is a schematic flowchart of another data transmission method in a multi-link system according to an embodiment of the present application, where an execution subject of the information processing method may be a first access device in the multi-link system.
As shown in fig. 7, a method for transmitting data in a multi-link system according to an embodiment of the present application may include steps 710 to 750.
Step 710, receiving a first connection request message sent by a multilink terminal.
Step 720, in case that the first connection request message includes the first parameter, sending a first response message to the multi-link terminal to connect the multi-link terminal.
The first response message may include a third parameter and a fourth parameter, where the third parameter is used to indicate at least one second candidate access device, and the fourth parameter is used to indicate the multi-link terminal to open uplink multi-connection.
In some embodiments of the present application, after step 720, the method may further comprise: and sending a notification message to the server, wherein the notification message may comprise the address of the multilink terminal, the message type and the seventh parameter.
Illustratively, the notification message may be a DS-STA-NOTIFY-EX message, the message type may be ADD, and the seventh parameter may be MC enabled, which may be used to instruct the first access device to start a downlink multi-connection operation.
After receiving the notification message sent by the first access device, the server may modify the association relationship between the locally maintained multi-link terminal and the access device, for example, the first access device may be used as a main access device, the address of the first access device may be used as the address of the main access device, and the auxiliary access device is temporarily set to null.
Step 730, receiving a measurement result of at least one second candidate access device sent by the multi-link terminal.
Step 750, sending a multi-connection configuration message to the multi-link terminal, the multi-connection configuration message including an address of the second access device.
And the multi-connection configuration message is used for establishing connection between the multi-link terminal and the second access equipment.
In some embodiments of the present application, after receiving the second connection request message sent by the multilink terminal, the second access device may send a second response message to the multilink terminal, and send a notification message to the server, where the notification message may include an address and a message type of the multilink terminal.
Illustratively, the message type may be set as ADD Secondary AP, which is the second access device.
After receiving the notification message sent by the second access device, the server may modify the association relationship between the locally maintained multilink terminal and the access device, for example, may use the second access device as an auxiliary access device, and use the address of the second access device as the address of the auxiliary access device.
It should be noted that, in the data transmission method in the multi-link system provided in the embodiment of the present application, the execution main body may be a multi-link terminal, or a control module in the multi-link terminal, which is used for executing the data transmission method in the multi-link system. The multilink terminal will be described in detail below.
Fig. 8 is a schematic structural diagram of another multi-link terminal provided in an embodiment of the present application, where the multi-link terminal may include at least two logical terminals. As shown in fig. 8, the multi-link terminal 800 may include: an obtaining module 810 and a sending module 820.
The acquiring module 810 is configured to acquire target parameters of a first access device and a second access device within a preset time period, where the multilink terminal is connected to the first access device and the second access device, respectively, and the target parameters are used to represent at least one of signal quality, network load, and transmission performance; a sending module 820, configured to send data to be transmitted only to the second access device when the target parameters of the first access device and the second access device meet a preset condition; the sending module 820 is further configured to send the data to be transmitted only to the first access device when the target parameters of the first access device and the second access device do not meet the preset condition.
In some embodiments of the present application, the target parameter includes a signal strength or a signal to interference plus noise ratio for characterizing signal quality, and the preset condition includes that the signal strength or the signal to interference plus noise ratio of the second access equipment is greater than a sum of the signal strength or the signal to interference plus noise ratio of the first access equipment and a first preset signal threshold.
In some embodiments of the present application, the target parameter includes a network throughput for characterizing transmission performance, and the preset condition includes that the network throughput of the second access device is smaller than a difference between the network throughput of the first access device and a first preset throughput threshold.
In some embodiments of the present application, the target parameter includes a transmission delay used for characterizing transmission performance, and the preset condition includes that the transmission delay of the second access device is smaller than a difference between the transmission delay of the first access device and a first preset delay threshold.
In some embodiments of the present application, the target parameter includes a signal strength or a signal to interference plus noise ratio for characterizing signal quality, and the preset condition includes that the signal strength or the signal to interference plus noise ratio of the second access device is greater than a second preset signal threshold, and the signal strength or the signal to interference plus noise ratio of the first access device is less than a third preset signal threshold.
In some embodiments of the present application, the target parameter includes a network throughput for characterizing transmission performance, and the preset condition includes that the network throughput of the second access device is less than a second preset throughput threshold, and the network throughput of the first access device is greater than a third preset throughput threshold.
In some embodiments of the present application, the target parameter includes a transmission delay for characterizing transmission performance, and the preset condition includes that the transmission delay of the second access device is smaller than a second preset delay threshold, and the transmission delay of the first access device is larger than a third preset delay threshold.
In some embodiments of the present application, the sending module 820 is further configured to send, to the first access device, a first connection request message before obtaining target parameters of the first access device and the second access device within a preset time period, where the first connection request message includes a first parameter, the first parameter is used to indicate that the multi-link terminal supports the multi-connection operation, the first connection request message is used for the multi-link terminal to be connected with the first access device, and the first access device supports the multi-connection operation; a receiving module, configured to receive a multi-connection configuration message sent by a first access device under a condition of being connected to the first access device, where the multi-connection configuration message includes an address of a second access device; the sending module 820 is further configured to send a second connection request message to the second access device according to the address of the second access device, where the second connection request message is used for the multi-link terminal to connect with the second access device.
In some embodiments of the present application, the sending module comprises: a receiving unit, configured to receive a broadcast message or a probe response message sent by a first candidate access device, where the broadcast message or the probe response message includes a second parameter; and a determining unit, configured to determine that the first candidate access device is the first access device if the second parameter of the first candidate access device is used to characterize that the first candidate access device supports the multi-connection operation.
In some embodiments of the present application, the receiving module comprises: a receiving unit, configured to receive a first response message sent by a first access device based on a first connection request message, and connect to the first access device, where the first response message includes a third parameter and a fourth parameter, the third parameter is used to indicate at least one second candidate access device, and the fourth parameter is used to indicate a multi-link terminal to start an uplink multi-connection operation; the measuring unit is used for measuring at least one of signal strength, signal-to-interference-and-noise ratio, network throughput, transmission delay and network load of at least one second candidate access device to obtain a measuring result; a sending unit, configured to send a measurement result to the first access device, so that the first access device determines, based on the measurement result, a second access device from at least one second candidate access device; and the receiving unit is further used for receiving the multi-connection configuration message sent by the first access device based on the measurement result.
In some embodiments of the present application, further comprising: and the receiving module is configured to receive a second response message sent by the second access device based on the second connection request message after sending the second connection request message to the second access device according to the address of the second access device, where the second response message includes a fifth parameter, and the fifth parameter is used to characterize that the second access device accepts the connection request of the multilink terminal.
In some embodiments of the present application, the obtaining module comprises: the measurement unit is used for measuring a target parameter of the first access device based on a first preset period; measuring a target parameter of the second access device based on a second preset period; the second preset period is less than or equal to the first preset period.
In some embodiments of the present application, the multi-link terminal includes at least two logical terminals, and the sending module 820 is specifically configured to: under the condition that target parameters of the first access device and the second access device meet preset conditions, an indication message and data to be transmitted are sent to the second access device through a target logic terminal of at least two logic terminals, so that the second access device sends the data to be transmitted to a server according to the indication message, wherein the target logic terminal is connected with the second access device.
Fig. 9 is a schematic hardware structure diagram of an apparatus according to an embodiment of the present application.
As shown in fig. 9, the device 900 in this embodiment may include a processor 901 and a memory 902 storing computer program instructions.
Specifically, the processor 901 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured to implement one or more Integrated circuits of the embodiments of the present Application.
Memory 902 may include mass storage for data or instructions. By way of example, and not limitation, memory 902 may include a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or Universal Serial Bus (USB) Drive or a combination of two or more of these. Memory 902 may include removable or non-removable (or fixed) media, where appropriate. The memory 902 may be internal or external to the integrated gateway disaster recovery device, where appropriate. In a particular embodiment, the memory 902 is a non-volatile solid-state memory. The Memory may include Read-Only Memory (ROM), random Access Memory (RAM), magnetic disk storage media devices, optical storage media devices, flash Memory devices, electrical, optical, or other physical/tangible Memory storage devices. Thus, in general, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software comprising computer-executable instructions and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the methods according to embodiments of the application.
The processor 901 reads and executes the computer program instructions stored in the memory 902 to implement the data transmission method in the multi-link system in any one of the above-described embodiments.
In one example, device 900 can also include a communication interface 903 and a bus 910. As shown in fig. 9, the processor 901, the memory 902, and the communication interface 903 are connected via a bus 910 to complete communication therebetween.
The communication interface 903 is mainly used for implementing communication between modules, apparatuses, units and/or devices in this embodiment of the application.
Bus 910 includes hardware, software, or both to couple the components of the online data traffic billing device to each other. By way of example, and not limitation, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industrial Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hyper Transport (HT) interconnect, an Industrial Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus or a combination of two or more of these. Bus 910 can include one or more buses, where appropriate. Although specific buses are described and shown in the embodiments of the application, any suitable buses or interconnects are contemplated by the application.
The device provided in the embodiment of the present application may be a multi-link terminal, and can implement each process implemented by the multi-link terminal in the method embodiments of fig. 3 to fig. 6; or, in the method embodiment of fig. 7, to avoid repetition, each process implemented by the multilink terminal is not described here again.
In combination with the data transmission method in the multi-link system in the foregoing embodiment, an embodiment of the present application may provide a multi-link system, where the multi-link system includes the network access device and/or the multi-link terminal in the foregoing embodiment. For specific contents of the network access device and the multilink terminal, reference may be made to the relevant description in the foregoing embodiments, and details are not described herein.
In addition, in combination with the data transmission method in the multilink system in the foregoing embodiment, the embodiment of the present application may provide a computer storage medium to implement. The computer storage medium having computer program instructions stored thereon; the computer program instructions, when executed by a processor, implement the method for data transmission in a multi-link system according to any of the above embodiments.
It is to be understood that the present application is not limited to the particular arrangements and instrumentality described above and shown in the attached drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present application are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions or change the order between the steps after comprehending the spirit of the present application.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic Circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
Aspects of the present disclosure are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of 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, 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, implement the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware for performing the specified functions or acts, or combinations of special purpose hardware and computer instructions.
As described above, only the specific embodiments of the present application are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.
Claims (16)
1. A method for transmitting data in a multi-link system, the method being applied to a multi-link terminal, the method comprising:
acquiring target parameters of first access equipment and second access equipment in a preset time period, wherein the multilink terminal is respectively connected with the first access equipment and the second access equipment, and the target parameters are used for representing at least one of signal quality, network load and transmission performance;
under the condition that the target parameters of the first access equipment and the second access equipment meet preset conditions, only sending data to be transmitted to the second access equipment;
and only sending the data to be transmitted to the first access equipment under the condition that the target parameters of the first access equipment and the second access equipment do not meet the preset conditions.
2. The method according to claim 1, wherein the target parameter comprises a signal strength or a signal to interference plus noise ratio (SINR) for characterizing signal quality, and the preset condition comprises that the signal strength or the signal to interference plus noise ratio (SINR) of the second access equipment is greater than a sum of the signal strength or the signal to interference plus noise ratio of the first access equipment and a first preset signal threshold.
3. The method of claim 1, wherein the target parameter comprises a network throughput characterizing transmission performance, and wherein the preset condition comprises the network throughput of the second access device being less than a difference between the network throughput of the first access device and a first preset throughput threshold.
4. The method of claim 1, wherein the target parameter comprises a transmission delay characterizing transmission performance, and wherein the preset condition comprises that the transmission delay of the second access device is smaller than a difference between the transmission delay of the first access device and a first preset delay threshold.
5. The method according to claim 1, wherein the target parameter includes a signal strength or a signal to interference plus noise ratio (SINR) for characterizing signal quality, the preset condition includes that the signal strength or the SINR of the second access device is greater than a second preset signal threshold, and the signal strength or the SINR of the first access device is less than a third preset signal threshold.
6. The method of claim 1, wherein the target parameters comprise network throughput for characterizing transmission performance, wherein the preset conditions comprise that the network throughput of the second access device is less than a second preset throughput threshold, and wherein the network throughput of the first access device is greater than a third preset throughput threshold.
7. The method of claim 1, wherein the target parameter comprises a transmission delay characterizing transmission performance, wherein the preset condition comprises that the transmission delay of the second access device is smaller than a second preset delay threshold, and the transmission delay of the first access device is larger than a third preset delay threshold.
8. The method of claim 1, wherein before the obtaining the target parameters of the first access device and the second access device within the preset time period, the method further comprises:
sending a first connection request message to the first access device, where the first connection request message includes a first parameter, the first parameter is used to characterize that the multi-link terminal supports multi-connection operation, the first connection request message is used for the multi-link terminal to connect with the first access device, and the first access device supports multi-connection operation;
under the condition of connection with the first access equipment, receiving a multi-connection configuration message sent by the first access equipment, wherein the multi-connection configuration message comprises an address of second access equipment;
and sending a second connection request message to the second access equipment according to the address of the second access equipment, wherein the second connection request message is used for connecting the multilink terminal and the second access equipment.
9. The method of claim 8, wherein sending the first connection request message to the first access device comprises:
receiving a broadcast message or a probe response message sent by a first candidate access device, wherein the broadcast message or the probe response message comprises a second parameter;
determining the first candidate access device as the first access device if the second parameter of the first candidate access device is used for characterizing that the first candidate access device supports multi-connection operation.
10. The method according to claim 8 or 9, wherein the receiving the multi-connection configuration message sent by the first access device in case of connecting with the first access device comprises:
receiving a first response message sent by the first access device based on the first connection request message, and connecting the first access device, where the first response message includes a third parameter and a fourth parameter, the third parameter is used to indicate at least one second candidate access device, and the fourth parameter is used to indicate the multi-link terminal to start uplink multi-connection operation;
measuring at least one of signal strength, signal to interference and noise ratio, network throughput, transmission delay and network load of the at least one second candidate access device to obtain a measurement result;
sending the measurement result to the first access device to cause the first access device to determine the second access device from the at least one second candidate access device based on the measurement result;
and receiving the multi-connection configuration message sent by the first access equipment based on the measurement result.
11. The method of claim 9, wherein after the sending the second connection request message to the second access device according to the address of the second access device, the method further comprises:
and receiving a second response message sent by the second access device based on the second connection request message, wherein the second response message includes a fifth parameter, and the fifth parameter is used for representing that the second access device accepts the connection request of the multilink terminal.
12. The method according to any one of claims 1 to 9, wherein the obtaining the target parameters of the first access device and the second access device within the preset time period comprises:
measuring a target parameter of the first access device based on a first preset period;
measuring a target parameter of the second access device based on a second preset period;
wherein the second preset period is less than or equal to the first preset period.
13. The method of claim 9, wherein the multi-link terminal includes at least two logical terminals, and the sending data to be transmitted only to the second access device if the target parameters of the first access device and the second access device satisfy a preset condition includes:
and under the condition that the target parameters of the first access device and the second access device meet preset conditions, sending an indication message and data to be transmitted to the second access device through a target logic terminal of the at least two logic terminals, so that the second access device sends the data to be transmitted to a server according to the indication message, wherein the target logic terminal is connected with the second access device.
14. A multi-link terminal, comprising:
an obtaining module, configured to obtain target parameters of a first access device and a second access device within a preset time period, where the multilink terminal is connected to the first access device and the second access device, respectively, and the target parameters are used to represent at least one of signal quality, network load, and transmission performance;
the sending module is used for sending the data to be transmitted to the second access equipment only under the condition that the target parameters of the first access equipment and the second access equipment meet preset conditions;
the sending module is further configured to send data to be transmitted only to the first access device when the target parameters of the first access device and the second access device do not meet preset conditions.
15. A multi-link system comprising the multi-link terminal of claim 14.
16. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon computer program instructions, which, when executed by a processor, implement a method of data transmission in a multi-link system according to any of claims 1-13.
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