A multi-air interface network throughput optimization method based on Aloha protocol

Abstract

The present invention proposes a multi-air interface network throughput optimization method based on the Aloha protocol, relates to the technical field of wireless communication, and solves the problem of data packet collision that is easy to generate when the current multi-air interface device and the single air interface device coexist and the problem of throughput reduction of the single air interface device. In the Aloha scenario where the multi-air interface device MRD and the single air interface device SRD coexist, the throughput of the overall system is optimized, the throughput fairness constraint ratio in different device units is set, and the total number of devices is counted, and the transmission probability of each device unit is adjusted according to the fairness constraint ratio and the total number of devices to change the throughput of the device unit. In the Aloha scenario where the multi-air interface device and the single air interface device coexist, the overall throughput of the system is optimized, which can effectively guarantee the group throughput requirement of the single air interface device group, meet the fairness requirement, and ensure the normal operation of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communications, and in particular to a multi-air interface network throughput optimization method based on an Aloha protocol. Background Art

[0002] As a classic medium access control (MAC) scheme, the Slotted-Aloha (S-Aloha) protocol divides the transmission time into several discrete time slots, allowing user devices to share wireless channel resources without centralized scheduling. It plays an important role in many wireless transmission technologies and network systems.

[0003] With the continuous evolution of network systems and the increasing complexity of wireless communication environments, the limited data transmission capacity of single-radio device SRD (Single-radio Device) has been unable to meet the diversified needs of future communication service quality. The limitations of SRD have promoted the birth and development of multi-radio technology. Multi-radio technology allows multiple air interfaces to be aggregated inside a single multi-radio device MRD (MRD), thereby having the ability to transmit and receive simultaneously on different links. MRD can participate in the competition on multiple wireless links at the same time in a single time slot, improving the probability of successful transmission of data packets and the utilization rate of channels. However, in the environment where MRD and SRD coexist, it should be noted that the increase in competition opportunities increases the probability of collision of data packets in each link. The transmission strategy adopted by MRD will affect the transmission behavior of SRD and the probability of successful transmission of data packets, which is not conducive to the throughput performance of SRD. Therefore, parameter adjustment in the network where MRD and SRD coexist is extremely important for the optimization performance of the throughput of random access networks.

[0004] The Aloha protocol has been developed to date and still plays an important role in many wireless transmission technologies, such as LoRa, SigFox, NB-IoT, etc. However, so far, the industry still lacks discussion on the network performance of multi-air interface devices and single-air interface devices under the Aloha network architecture, which is undoubtedly unfavorable for the future application of multi-air interface technology in the above wireless scenarios. At the same time, in actual IoT application scenarios, communication services often have minimum requirements for their own quality of service (QoS, Quality of Service), which is a practical need to ensure that IoT smart devices maintain normal operation. For example, when the throughput performance of a device in QoS for a period of time is too low, it may further cause the device to choose to shut down and enter a dormant state, which is undoubtedly unfavorable for the working condition of the device in the network. Based on the above requirements, in addition to optimizing the overall throughput of the system, how to further consider the QoS requirements of the device itself and convert them into throughput fairness between different devices participating in the competition in the link is also a problem that needs to be solved.

[0005] The prior art discloses a method for maximizing network throughput and fairness. First, according to the derived throughput formula and the statistical information of active user equipment, an average contention window is designed to maximize the throughput of user equipment in each SF, and the throughput difference of user equipment in different SFs is minimized by adjusting the allocation distance of the spreading factor SF, thereby achieving overall fairness of the network throughput. Summary of the invention

[0006] In order to solve the problem of data packet collision that is easy to occur when multi-air interface devices and single-air interface devices coexist and the problem of reduced throughput of single-air interface devices, the present invention proposes a multi-air interface network throughput optimization method based on the Aloha protocol. In the Aloha scenario where multi-air interface devices and single-air interface devices coexist, the overall throughput of the system is optimized, which can effectively guarantee the group throughput requirement of the single-air interface device group, meet the fairness requirement, and ensure the normal operation of the equipment.

[0007] In order to achieve the above technical effects, the technical solution of the present invention is as follows:

[0008] A multi-air interface network throughput optimization method based on the Aloha protocol, comprising the following steps:

[0009] S1. Establishing a multi-port network throughput optimization system based on the Aloha protocol within the network, the system comprises a plurality of single-port devices SRD and a plurality of multi-port devices MRD;

[0010] S2 determines the number of available channels in the network and the number of single-air interface devices SRD on each channel, divides the single-air interface device SRD in the network into several air interface device units by channel, and divides all multi-air interface devices MRD in the network into the same multi-air interface device unit;

[0011] S3. The number of devices and throughput fairness constraint ratios of devices in different equipment units are counted by the multi-air interface device MRD in the multi-air interface device unit;

[0012] S4. Determine whether there is a throughput fairness requirement for the single air interface device SRD in the single air interface device unit. If so, set the optimal transmission probability required for each device unit to achieve the maximum network throughput according to the number of devices in each device unit, and execute S5; otherwise, set the optimal transmission probability required for each device unit to achieve the maximum network throughput according to the number of devices in each device unit and the throughput fairness constraint ratio, and execute S5;

[0013] In step S4, if β (g) =0, the single air interface device SRD in the single air interface device unit does not have a throughput fairness requirement; if β (g) >0, the single air interface device SRD within the single air interface device unit has a throughput fairness requirement.

[0014] S5 after a preset time, the use of multi-air interface equipment unit to collect the throughput of each device unit, according to the collected throughput of each device unit to obtain the total throughput of the network;

[0015] S6. Determine whether the network is in the best working state or whether a new device appears in each device unit in the network. If so, return to S1; otherwise, maintain the current network state.

[0016] In the technical scheme, firstly, a multi-air interface network throughput optimization system based on the Aloha protocol is used to optimize the overall throughput of the system in an Aloha scenario where multi-air interface devices MRD and single-air interface devices SRD coexist, and a certain number of available channels are set in the network to provide a transmission link between the multi-air interface devices MRD and the single-air interface devices SRD. Then, the throughput fairness constraint ratios in different equipment units are set, and the total number of equipment is counted. Then, it is determined whether there is a throughput fairness requirement for the single-air interface device SRD in the single-air interface device unit. Then, the transmission probability of each equipment unit is adjusted according to the fairness constraint ratio and the total number of equipment to change the throughput of the equipment unit, so that each equipment unit reaches the optimal transmission probability required for the maximum throughput of the network. In the Aloha scenario where multi-air interface devices and single-air interface devices coexist, the overall throughput of the system is optimized, which can effectively guarantee the group throughput requirement of the single-air interface device group, meet the fairness requirement, and ensure the normal operation of the equipment.

[0017] Preferably, in step S1 , each single air interface device SRD is provided with a single radio station, and each multi-air interface device MRD is provided with a plurality of radio stations.

[0018] Preferably, let the number of available channels in the network be L m , divide the single air interface device SRD in the network into L single air interface device units, L≤L m All the multi-air-interface devices MRD in the network are divided into the same multi-air-interface device unit, which is set as the Mth device unit; the number of devices n in the L+1 device unit is counted through the multi-air-interface device MRD. (i) , i∈{1, 2, ..., L, M} and the throughput fairness constraint ratio β of the devices in L single air interface device units (g) ≥0, g∈{1, 2, ..., L}, where β(g) represents the proportional relationship between the unit throughput of the g-th single-air-interface device unit and the corresponding throughput of the multi-air-interface device unit on the g-th channel.

[0019] Preferably, each of the devices transmits according to the probability q (i) ∈(0, 1) initiates a transmission request.

[0020] Preferably, in step S2, the number of channels L m The number of radio stations that does not exceed all the multi-air interface devices MRD in the multi-air interface device unit. If the devices in the single-air interface device unit do not have a minimum throughput requirement, the corresponding throughput fairness constraint ratio value β (g) Set to 0 and transmit to the multi-air device unit.

[0021] Here, the number of channels L is set m The number of radio stations of all multi-air-interface devices MRD in the multi-air-interface device unit is not more than that, so that all multi-air-interface devices MRD can participate in the channel transmission opportunity competition on all channels set between the single-air-interface device unit and the multi-air-interface device unit. If the device in the single-air-interface device unit does not have a minimum throughput requirement, the fairness constraint ratio value β is directly set to (g) Set to 0 and transmit to the multi-air device unit.

[0022] Preferably, in step S4, each single-air-interface device unit and each multi-air-interface device unit initiates a transmission request with an optimal transmission probability.

[0023] Preferably, in step S4, if β (g) =0, the single air interface device SRD in the single air interface device unit does not have a throughput fairness requirement; if β (g) >0, the single air interface device SRD in the single air interface device unit has a throughput fairness requirement.

[0024] Preferably, when the single air interface device SRD in the single air interface device unit has a throughput fairness requirement, and the fairness ratio value β (g) Does not meet β (1) =β (2) =…=β (L) =β>0, the optimal transmission probability q of each single air interface device unit (g)，F The calculation formula is:

[0025]

[0026] Among them, β (g) Indicates the ratio of the unit throughput of the g-th single-air-interface unit to the corresponding throughput of the multi-air-interface device unit on the g-th channel; n (M) Indicates the number of devices in the multi-air interface device unit; n (g) Indicates the number of devices in the g-th single-air-interface device unit; q (M)，F Indicates the optimal transmission probability of a multi-air interface device unit;

[0027] The optimal transmission probability q of each multi-air interface device unit at present (M)，F The calculation formula is:

[0028]

[0029] The maximum throughput of the current network The calculation formula is:

[0030]

[0031] Preferably, when the single air interface device SRD in the single air interface device unit has a throughput fairness requirement, and the fairness ratio value β (g) Satisfy β (1) =β (2) =…=β (L) =β>0, the optimal transmission probability q of each single air interface device unit (g)，F，β The calculation formula is:

[0032]

[0033] Among them, β represents the fairness ratio value of all current channels; n (g) Indicates the number of devices in the g-th single air interface device unit;

[0034] The optimal transmission probability q of each multi-air interface device unit at present (M)，F，β The calculation formula is:

[0035]

[0036] Among them, n(M) Indicates the number of devices in the multi-air interface device unit;

[0037] The maximum throughput of the current network The calculation formula is:

[0038]

[0039] Where L represents the number of all single-air-interface equipment units in the network;

[0040] Preferably, when the single air interface device SRD in the single air interface device unit does not have a throughput fairness requirement, that is, β (g) =0, the optimal transmission probability q of each single air interface device unit at present (g)，* and the optimal transmission probability q of the multi-air interface equipment unit (M)，* The calculation formula is:

[0041] n (M) q (M)，*+ n (g) q (g)，* =1;

[0042] Among them, n (M) Indicates the number of devices in the multi-air interface device unit; n (g) Indicates the number of devices in the g-th single air interface device unit;

[0043] The maximum throughput of the current network The calculation formula is:

[0044]

[0045] Wherein, L represents the number of all single air interface equipment units in the network.

[0046] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0047] The invention proposes a multi-air-interface network throughput optimization method based on the Aloha protocol. Firstly, a multi-air-interface network throughput optimization system based on the Aloha protocol composed of a plurality of single-air-interface devices SRDs and a plurality of multi-air-interface devices MRDs is established. In an Aloha scenario where the multi-air-interface devices MRDs and the single-air-interface devices SRDs coexist, the overall throughput of the system is optimized. A certain number of available channels are set in the network to provide transmission links between the multi-air-interface devices MRDs and the single-air-interface devices SRDs. Then, the throughput fairness constraint ratios in different device units are set, and the total number of devices is counted. Then, it is determined whether the single-air-interface device SRDs in the single-air-interface device unit have a throughput fairness requirement. Then, according to the fairness constraint ratio and the total number of devices, the transmission probability of each device unit is adjusted to change the throughput of the device unit, so that the transmission probability of each device unit reaches the optimal transmission probability required for the maximum throughput of the network. In the Aloha scenario where the multi-air-interface devices and the single-air-interface devices coexist, the overall throughput of the system is optimized, the group throughput requirement of the single-air-interface device group can be effectively guaranteed, the fairness requirement is met, and the normal operation of the device is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A flowchart showing a multi-air interface network throughput optimization method based on the Aloha protocol proposed in Embodiment 1 of the present invention;

[0049] Figure 2 A structural diagram showing a multi-air interface network throughput optimization system based on the Aloha protocol proposed in Example 1 of the present invention;

[0050] Figure 3 A structural diagram showing a single air interface device unit proposed in Embodiment 2 of the present invention;

[0051] Figure 4 A structural diagram showing a multi-air interface device unit proposed in Embodiment 2 of the present invention; DETAILED DESCRIPTION

[0052] The drawings are for illustrative purposes only and should not be construed as limiting the present patent;

[0053] In order to better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent actual sizes. The description of the directions of parts such as "upper" and "lower" does not limit the present patent;

[0054] It is understandable to those skilled in the art that some well-known contents may be omitted in the drawings;

[0055] The positional relationships described in the drawings are only for illustrative purposes and should not be construed as limiting the present patent.

[0056] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0057] Example 1

[0058] like Figure 1 As shown, a multi-air interface network throughput optimization method based on the Aloha protocol includes the following:

[0059] S1. Establishing a multi-port network throughput optimization system based on the Aloha protocol within the network, the system comprises a plurality of single-port devices SRD and a plurality of multi-port devices MRD;

[0060] S2 determines the number of available channels in the network and the number of single-air interface devices SRD on each channel, divides the single-air interface device SRD in the network into several air interface device units by channel, and divides all multi-air interface devices MRD in the network into the same multi-air interface device unit;

[0061] S3. The number of devices and throughput fairness constraint ratios of devices in different equipment units are counted by the multi-air interface device MRD in the multi-air interface device unit;

[0062] S4. Determine whether there is a throughput fairness requirement for the single air interface device SRD in the single air interface device unit. If so, set the optimal transmission probability required for each device unit to achieve the maximum network throughput according to the number of devices in each device unit, and execute S5; otherwise, set the optimal transmission probability required for each device unit to achieve the maximum network throughput according to the number of devices in each device unit and the throughput fairness constraint ratio, and execute S5;

[0063] S5 after a preset time, the use of multi-air interface equipment unit to collect the throughput of each device unit, according to the collected throughput of each device unit to obtain the total throughput of the network;

[0064] S6. Determine whether the network is in the best working state or whether a new device appears in each device unit in the network. If so, return to S1; otherwise, maintain the current network state.

[0065] In step S6, by comparing the existing total network throughput with the maximum throughput value that the network can achieve under different conditions in S4, it is determined whether the network is in the best working state, or whether new equipment has appeared in the network, and further whether the transmission probability of each equipment unit needs to be adjusted. If the total network throughput does not match the theoretical maximum value, it will return to S1 and run again, otherwise it will maintain the current state.

[0066] In this embodiment, see Figure 2Firstly, a multi-air-interface network throughput optimization method system based on the Aloha protocol is established, which is composed of L single-air-interface devices and one multi-air-interface device. In the Aloha scenario where the multi-air-interface device MRD and the single-air-interface device SRD coexist, the overall throughput of the system is optimized. A certain number of available channels are set in the network to provide transmission links between the multi-air-interface device MRD and the single-air-interface device SRD. Then, the throughput fairness constraint ratios in different device units are set, and the total number of devices is counted. Then, it is determined whether the single-air-interface device SRD in the single-air-interface device unit has a throughput fairness requirement. Then, according to the fairness constraint ratio and the total number of devices, the transmission probability of each device unit is adjusted to change the throughput of the device unit, so that each device unit can reach the optimal transmission probability required for the maximum throughput of the network. In the Aloha scenario where the multi-air-interface devices and the single-air-interface devices coexist, the overall throughput of the system is optimized, which can effectively guarantee the group throughput requirement of the single-air-interface device group, meet the fairness requirement, and ensure the normal operation of the equipment.

[0067] Example 2

[0068] See also Figure 3 and Figure 4 In step S1, each single air interface device SRD is equipped with a single radio station, and each multi-air interface device MRD is equipped with multiple radio stations. The multi-air interface device MRD equipped with radio stations and the single air interface device SRD both transmit data packets on corresponding links. The single air interface device SRD transmits its own device status and fairness requirements to the multi-air interface device MRD, and the single air interface device SRD transmits transmission probability parameters that meet the optimization requirements to the multi-air interface device MRD.

[0069] See also Figure 1 and Figure 2 , let the number of available channels in the network be L m , divide the single air interface device SRD in the network into L single air interface device units, L≤L m All the multi-air-interface devices MRD in the network are divided into the same multi-air-interface device unit, which is set as the Mth device unit; the number of devices n in the L+1 device unit is counted through the multi-air-interface device MRD. (i) , i∈{1, 2, ..., L, M} and the throughput fairness constraint ratio β of the devices in L single air interface device units (g) ≥0, g∈{1, 2, ..., L}, where β(g) represents the ratio of the unit throughput of the g-th single-air-interface device unit to the corresponding throughput of the multi-air-interface device unit on the g-th channel; each device transmits according to the transmission probability q (i) ∈(0,1) initiates a transmission request. In step S2, the number of channels L mThe number of radio stations of all multi-air-interface devices MRD in the multi-air-interface device unit does not exceed the number of radio stations of all multi-air-interface devices MRD in the multi-air-interface device unit, so that all multi-air-interface devices MRD can participate in the channel transmission opportunity competition on all channels set between the single-air-interface device unit and the multi-air-interface device unit, and the number L of the single-air-interface device units does not exceed the number L of channels m , ensuring that the single-air-interface device SRD can successfully initiate a transmission request in the channel corresponding to the multi-air-interface device unit. If the device in the single-air-interface device unit does not have a minimum throughput requirement, the corresponding throughput fairness constraint ratio value β (g) Set to 0 and transmit to the multi-air device unit.

[0070] Example 3

[0071] See also Figure 2 , the network is in a saturated state, that is, each device has data packets waiting to be transmitted. If more than one device initiates a data packet transmission request within the same time limit on a channel, a collision will occur and the data packet transmission will fail. In order to control the competition between the single-air-interface device SRD and the multi-air-interface device MRD in the channel, each device in this embodiment transmits data packets according to the transmission probability q (i) ∈(0, 1) initiates a transmission request. Since the single-air interface device SRD can only compete for the transmission opportunity in one channel, and the multi-air interface device MRD has the ability to send data packets on multiple channels at the same time, the devices of each device unit will, at the beginning of each time limit, compete for the transmission opportunity according to the probability q (i) ∈(0, 1) initiates transmission requests on L independent channels respectively.

[0072] See also Figure 1 In step S4, each single-air-interface device unit and multi-air-interface device unit initiates a transmission request with an optimal transmission probability.

[0073] When the single air interface device SRD in the device unit has a throughput fairness requirement, and the fairness ratio value β (g) Does not meet β (1) =β (2) =…=β (L) =β>0, the optimal transmission probability q of each single air interface device unit (g)，F The calculation formula is:

[0074]

[0075] Among them, β (g) It represents the ratio of the unit throughput of the g-th single-air-interface unit to the corresponding throughput of the multi-air-interface device unit on the g-th channel, n (M) Indicates the number of devices in the multi-air interface device unit, n (g)Indicates the number of devices in the g-th single-air-interface device unit, q (M)，F represents the optimal transmission probability of the multi-air interface equipment unit; β (g) The purpose is to keep the unit throughput of the g-th single air interface unit above a certain level and not too low;

[0076] The optimal transmission probability q of each multi-air interface device unit at present (M)，F The calculation formula is:

[0077]

[0078] The maximum throughput of the current network The calculation formula is:

[0079]

[0080] When the single air interface device SRD in the device unit has a throughput fairness requirement, and the fairness ratio value β (g) Satisfy β (1) =β (2) =…=β (L) =β>0, the optimal transmission probability q of each single air interface device unit (g)，F，β The calculation formula is:

[0081]

[0082] Among them, β represents the fairness ratio value of all current channels; n (g) Indicates the number of devices in the g-th single air interface device unit;

[0083] The optimal transmission probability q of each multi-air interface device unit at present (M)，F，β The calculation formula is:

[0084]

[0085] Among them, n (M) Indicates the number of devices in the multi-air interface device unit;

[0086] The maximum throughput of the current network The calculation formula is:

[0087]

[0088] Wherein, L represents the number of all single air interface equipment units in the network.

[0089] When the single air interface device SRD in the device unit does not have a throughput fairness requirement, that is, β (g) =0, the optimal transmission probability q of each single air interface device unit at present (g)，*and the optimal transmission probability q of the multi-air interface equipment unit (M)，* The calculation formula is:

[0090] n (M) q (M)，* +n (g) q (g)，* =1;

[0091] Among them, n (M) Indicates the number of devices in the multi-air interface device unit; n (g) Indicates the number of devices in the g-th single air interface device unit;

[0092] The maximum throughput of the current network The calculation formula is:

[0093]

[0094] Wherein, L represents the number of all single air interface equipment units in the network.

[0095] Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A multi-air interface network throughput optimization method based on Aloha protocol, characterized in that: Includes the following: S1. Establishing a multi-port network throughput optimization system based on the Aloha protocol within the network, the system comprises a plurality of single-port devices SRD and a plurality of multi-port devices MRD; S2 determines the number of available channels in the network and the number of single-air interface devices SRD on each channel, divides the single-air interface device SRD in the network into several single-air interface device units by channel, and divides all multi-air interface devices MRD in the network into the same multi-air interface device unit; S3. The number of devices and the ratio of throughput fairness constraints in different equipment units are counted by the multi-air interface equipment MRD in the multi-air interface equipment unit; wherein the ratio of throughput fairness constraints is β (g) , represents the ratio of the unit throughput of the g-th single-air-interface device unit to the corresponding throughput of the multi-air-interface device unit on the g-th channel; S4. Determine whether there is a throughput fairness requirement for the single air interface device SRD in the single air interface device unit. If so, set the optimal transmission probability required for each device unit to achieve the maximum network throughput according to the number of devices in each device unit, and execute S5; otherwise, set the optimal transmission probability required for each device unit to achieve the maximum network throughput according to the number of devices in each device unit and the throughput fairness constraint ratio, and execute S5; S5 after a preset time, the use of multi-air port equipment unit to collect the throughput of each device unit, according to the collected throughput of each device unit to obtain the total throughput of the network; S6. Determine whether the network is in the best working state or whether a new device appears in each device unit in the network. If so, return to S1; otherwise, maintain the current network state.

2. The method for optimizing the multi-air interface network throughput based on the Aloha protocol according to claim 1, characterized in that: In step S1 , each single-air-interface device SRD is provided with a single radio station, and each multi-air-interface device MRD is provided with a plurality of radio stations.

3. The method for optimizing the multi-air interface network throughput based on the Aloha protocol according to claim 2, characterized in that: Assume the number of available channels in the network is L m , divide the single air interface device SRD in the network into L single air interface device units, L≤L m , and divide all the multi-air-interface devices MRD in the network into the same multi-air-interface device unit, which is set as the Mth device unit; Use the multi-air interface device MRD to count the number of devices n in the L+1 device unit (i) ,i∈{1,2,…,L,M} and the throughput fairness constraint ratio of devices in L single air interface device units β (g) ≥0,g∈{1,2,…,L}, where β (g) It represents the ratio of the unit throughput of the g-th single-air-interface equipment unit to the corresponding throughput of the multi-air-interface equipment unit on the g-th channel.

4. The method for optimizing the multi-air interface network throughput based on the Aloha protocol according to claim 3, characterized in that: Each device transmits according to the probability q (i) ∈(0,1) initiates a transmission request.

5. The method for optimizing the multi-air interface network throughput based on the Aloha protocol according to claim 3, characterized in that: In step S2, the number of available channels L m The number of radio stations that does not exceed all the multi-air interface devices MRD in the multi-air interface device unit. If the devices in the single-air interface device unit do not have a minimum throughput requirement, the corresponding throughput fairness constraint ratio value β (g) Set to 0 and transmit to the multi-air interface device unit.

6. The method for optimizing the throughput of a multi-air interface network based on the Aloha protocol according to claim 4, characterized in that: In step S4, each single-air-interface device unit and each multi-air-interface device unit initiates a transmission request with an optimal transmission probability.

7. The method for optimizing the multi-air interface network throughput based on the Aloha protocol according to claim 6, characterized in that: In step S4, if β (g) =0, the single air interface device SRD in the single air interface device unit does not have a throughput fairness requirement; if β (g) >0, the single air interface device SRD within the single air interface device unit has a throughput fairness requirement.

8. The method for optimizing the multi-air interface network throughput based on the Aloha protocol according to claim 7, characterized in that: When the single air interface device SRD in the single air interface device unit has a throughput fairness requirement, and the fairness ratio value β (g) Does not meet β (1) =β (2) =…=β (L) =β>0, the optimal transmission probability q of each single air interface device unit (g),F The calculation formula is: Among them, β represents the fairness ratio value on all current channels, β (g) It represents the ratio of the unit throughput of the g-th single-air-interface unit to the corresponding throughput of the multi-air-interface device unit on the g-th channel, n (M) Indicates the number of devices in the multi-air interface device unit, n (g) Indicates the number of devices in the g-th single-air-interface device unit, q (M),F Indicates the optimal transmission probability of a multi-air interface device unit; The optimal transmission probability q of each multi-air interface device unit at present (M),F The calculation formula is: The maximum throughput of the current network The calculation formula is:

9. The method for optimizing the multi-air interface network throughput based on the Aloha protocol according to claim 7, characterized in that: When the single air interface device SRD in the single air interface device unit has a throughput fairness requirement, and the fairness ratio value β (g) Satisfy β (1) =β (2) =…=β (L) =β>0, the optimal transmission probability q of each single air interface device unit (g),F,β The calculation formula is: Among them, β represents the fairness ratio value on all current channels; n (g) Indicates the number of devices in the g-th single air interface device unit; The optimal transmission probability q of each multi-air interface device unit at present (M),F,β The calculation formula is: Among them, n (M) Indicates the number of devices in the multi-air interface device unit; The maximum throughput of the current network The calculation formula is: Wherein, L represents the number of all single air interface equipment units in the network.

10. The method for optimizing the multi-air interface network throughput based on the Aloha protocol according to claim 7, characterized in that: When the single air interface device SRD in the single air interface device unit does not have a throughput fairness requirement, that is, β (g) =0, the optimal transmission probability q of each single air interface device unit at present (g),* and the optimal transmission probability q of the multi-air interface equipment unit (M),* The calculation formula is: n (M) q (M),* +n (g) q (g),* =1; Among them, n (M) Indicates the number of devices in the multi-air interface device unit; n (g) Indicates the number of devices in the g-th single air interface device unit; The maximum throughput of the current network The calculation formula is: Wherein, L represents the number of all single air interface equipment units in the network.

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