High-efficiency transmission mode selection method and device for dual-queue short packet system

Abstract

The present invention discloses a high-efficiency transmission mode selection method and device for a dual-queue short packet system, the method comprising the following steps: according to queuing theory and short packet transmission theory, respectively obtaining the average peak information age (PAoI) gain of the short packet domain multiplexing mode and the short packet domain diversity mode compared to the single-queue system; according to the average peak information age (PAoI) gain and the transfer probability of the data packet in the dual-queue multiplexing mode, respectively deriving the signal-to-noise ratio threshold for switching the high-efficiency transmission mode of the data packet update under high-rate and low-rate conditions; and selecting the transmission mode according to the signal-to-noise ratio threshold. The present invention selects the high-efficiency transmission mode through the signal-to-noise ratio threshold, and reflects the effectiveness of the high-efficiency transmission mode selection method according to the average peak information age (PAoI).

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a method and device for selecting a time-efficient transmission mode for a dual-queue short packet system. Background Art

[0002] The freshness of information plays a key role in time-sensitive smart manufacturing applications. For example, in real-time control, outdated data packets and old information may lead to erroneous operations. To this end, a new performance metric, the age of information (AoI), has been proposed to measure the freshness of information. AoI only focuses on the latest data packets, so it is fundamentally different from traditional latency metrics. The latency metric treats every data packet equally and tries to transmit it regardless of whether it is fresh or not. Using multi-queue cloud wireless access networks in smart factories is an effective way to reduce AoI, especially in applications with limited space and resources. This multi-queue cloud wireless access network approach can be modeled as a dual-queue system.

[0003] In typical real-time communication scenarios such as factory automation, status update information is limited in size and is therefore transmitted in short packets, such as 20-250 bytes. Using short packets is expected to reduce transmission latency and thus reduce AoI, but it may cause unavoidable transmission error rates that affect information freshness. Packet multiplexing, i.e., short packet domain multiplexing, and transmission diversity, i.e., short packet domain diversity, are typical transmission modes for dual-queue systems. Packet multiplexing is the transmission of independent packets over multiple links, which can achieve higher transmission rates and thus reduce AoI. Transmission diversity, on the other hand, is the transmission of the same data over multiple links to achieve higher transmission reliability, which can also reduce AOI. However, their quantitative impact on AoI performance remains unknown, making it difficult to determine the time-efficient transmission mode for dual-queue short packet transmission systems. Summary of the invention

[0004] In view of the above problems, the present invention provides a high-efficiency transmission mode selection method, device and computer storage medium for a dual-queue short packet system.

[0005] A first aspect of the present invention provides a method for selecting a time-efficient transmission mode for a dual-queue short packet system, the method comprising the following steps:

[0006] According to the queuing theory and short packet transmission theory, the average peak information age PAoI gain G of the short packet domain multiplexing mode and the short packet domain diversity mode compared with the single queue system is obtained respectively. C , G D ;

[0007] According to G C , G D, and the transfer probability of the data packet in the dual-queue multiplexing mode are respectively derived to obtain the signal-to-noise ratio threshold of the high-efficiency transmission mode switching of the data packet update under high-rate and low-rate conditions;

[0008] The transmission mode is selected based on the signal-to-noise ratio threshold, specifically:

[0009] In the case of high rate, when the average signal-to-noise ratio of the dual-queue short packet system is greater than or equal to the signal-to-noise ratio threshold in the case of high rate, the short packet domain multiplexing mode is adopted, otherwise, the short packet domain diversity mode is adopted;

[0010] In the case of low rate, when the average signal-to-noise ratio of the dual-queue short packet system is greater than or equal to the signal-to-noise ratio threshold in the case of low rate, the short packet domain multiplexing mode is adopted, otherwise, the short packet domain diversity mode is adopted.

[0011] Furthermore, the short packet domain multiplexing mode has an average peak information age PAoI gain G compared to the single queue system. C for:

[0012]

[0013] where ζ1=1-E[ε M ](π1p 11 +π1p 12 +π2p 21 +π3p 31 )-π2p 23 -π3p 33 ,φ=M / (1-e -λM )-1 / λ, λ represents the update rate of the data packet, M represents the transmission time of the data packet, m represents the length of the data packet, π represents the circumference of a circle, and L represents the number of bits of information transmitted. represents the average signal-to-noise ratio, δ=e L / m -1, E[ε M ] represents the average error rate in the short packet domain multiplexing mode, π1, π2, π3 represent the three steady-state probabilities of data packet transmission in the short packet domain multiplexing mode, and p ij Represents the probability of transition from state i to state j, i,j∈{1,2,3}.

[0014] Furthermore, the short packet domain diversity mode has an average peak information age PAoI gain G compared to the single queue system. D for:

[0015]

[0016] Furthermore, the data packet updates the signal-to-noise ratio threshold for switching to a high-efficiency transmission mode at a low rate. for

[0017] The root of

[0018]

[0019] Furthermore, the data packet updates the signal-to-noise ratio threshold for switching the high-efficiency transmission mode at a high rate. for:

[0020]

[0021] A second aspect of the present invention provides a high-efficiency transmission mode selection device for a dual-queue short packet system, the device comprising:

[0022] The average peak information age PAoI gain acquisition module is used to obtain the average peak information age PAoI gain G of the short packet domain multiplexing mode and the short packet domain diversity mode compared with the single queue system according to the queuing theory and the short packet transmission theory. C , G D ;

[0023] The signal-to-noise ratio threshold acquisition module is used to obtain the signal-to-noise ratio threshold according to G C , G D , and the transfer probability of the data packet in the dual-queue multiplexing mode are respectively derived to obtain the signal-to-noise ratio threshold of the high-efficiency transmission mode switching of the data packet update under high-rate and low-rate conditions;

[0024] The transmission mode selection module is used to select the transmission mode according to the signal-to-noise ratio threshold, specifically:

[0025] In the case of high rate, when the average signal-to-noise ratio of the dual-queue short packet system is greater than or equal to the signal-to-noise ratio threshold in the case of high rate, the short packet domain multiplexing mode is adopted, otherwise, the short packet domain diversity mode is adopted;

[0026] In the case of low rate, when the average signal-to-noise ratio of the dual-queue short packet system is greater than or equal to the signal-to-noise ratio threshold in the case of low rate, the short packet domain multiplexing mode is adopted, otherwise, the short packet domain diversity mode is adopted.

[0027] According to a third aspect of the present invention, a high-efficiency transmission mode selection device for a dual-queue short packet system is provided, comprising: a processor; and a memory, wherein a computer executable program is stored in the memory, and when the computer executable program is executed by the processor, the high-efficiency transmission mode selection method for the dual-queue short packet system is executed.

[0028] According to a fourth aspect of the present invention, a computer-readable storage medium is provided, on which instructions are stored. When the instructions are executed by a processor, the processor executes the high-efficiency transmission mode selection method for the dual-queue short packet system.

[0029] The invention provides a high-efficiency transmission mode selection method, device and computer storage medium for a dual-queue short packet system. Aiming at the problem that the timeliness gain of multiplexing and diversity transmission modes in the dual-queue short packet domain is unclear, first, according to queuing theory and short packet transmission theory, a last-come-first-served system with a queue capacity of 0 is considered, and the expression of the average PAoI of the two transmission modes on the signal-to-noise ratio and the update rate is derived; then, according to the approximate method such as the Taylor first-order expansion formula of the e-index, the PAoI gain of the two transmission modes compared with the single-queue system is analyzed; according to the PAoI gain and the transfer probability of the data packet in the dual-queue multiplexing mode, the signal-to-noise ratio threshold of the high-efficiency transmission mode switching under high-rate and low-rate conditions is derived respectively; finally, the transmission mode is selected according to the signal-to-noise ratio threshold. The beneficial effect finally obtained is: the high-efficiency transmission mode is selected by the signal-to-noise ratio threshold, and the effectiveness of the high-efficiency transmission mode selection method is reflected according to the average peak information age PAoI, and the multiplexing mode transmission in the dual-queue short packet domain is fully utilized to obtain a higher transmission rate, thereby reducing the advantage of AoI and the advantage that the diversity transmission mode can obtain higher transmission reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a transmission schematic diagram of a dual-queue short packet system according to an embodiment of the present invention;

[0031] Figure 2 Flow chart of a method for selecting a high-efficiency transmission mode for a dual-queue short packet system according to an embodiment of the present invention;

[0032] Figure 3 This is a comparison diagram of the effect of the average signal-to-noise ratio on the average peak information age PAoI of the dual-queue short packet system of an embodiment of the present invention;

[0033] Figure 4 is a diagram of applicable intervals for selecting a high-efficiency transmission mode corresponding to different arrival rates and average signal-to-noise ratios in an embodiment of the present invention;

[0034] Figure 5 2 is a schematic structural diagram of a high-efficiency transmission mode selection device for a dual-queue short packet system according to an embodiment of the present invention;

[0035] Figure 6 It is an architecture diagram of a computer device in an embodiment of the present invention. DETAILED DESCRIPTION

[0036] In order to further explain the technical solution of the present invention in detail, this embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation method and specific steps.

[0037] In the queuing theory and short packet transmission theory described in the present invention, information age is defined as the time interval from the generation time of the last successfully transmitted data packet to the current time. Based on this, the peak information age (PeakAoI, PAoI) can characterize the worst case of AoI. PAoI is positively correlated with AoI. In the time interval [0, τ], the average PAoI of a single queue system can be expressed as:

[0038]

[0039] Among them, A i represents the PAoI of the ith update, N τ represents the number of packets successfully transmitted in the time interval [0,τ], W i-1 represents the waiting time of the i-1th data packet, S i-1 represents the service time of the i-1th data packet, Y i represents the interval time between the second consecutive successful transmission of data packets, E[·] represents the expectation, and E[ε] represents the average error rate.

[0040] According to the fading channel model, the channel gain of each queue in the multiplexing transmission mode obeys the exponential distribution, while the channel gain in the diversity transmission mode can be equivalent to the sum of two independent exponential distributions, obeying the Erlang distribution. Based on this, the average short packet error rate (Block error probability, BLEP) in the short packet domain multiplexing mode can be derived as:

[0041]

[0042] in, δ=e L / m -1, C(γ) = log2(1+γ) represents the channel capacity, V(γ) = (1-1 / (1+λ) 2 )(log2e) 2 represents channel dispersion, m is the short packet length, γ is the signal-to-noise ratio (SNR), and L is the number of transmitted information bits. At the same time, the average BLEP in the short packet domain diversity mode is expressed as:

[0043]

[0044] Example 1

[0045] A time-efficient transmission mode selection method for a dual-queue short packet domain system, wherein the dual-queue short packet domain system model is as follows: Figure 1 As shown, the update of data packets follows Poisson distribution, λ represents the update rate of data packets, m represents the length of data packets, and ε kThe error rate of queue k is represented by the following steps: Figure 2 As shown, the specific implementation steps are as follows:

[0046] Step 1: According to the queuing theory and short packet transmission theory, use M = mT s Indicates the transmission time of the data packet, T s Denotes the data duration of a packet length of m, and the average PAoI gain G in the short packet domain multiplexing mode can be derived. C expression:

[0047]

[0048] where ζ1=1-E[ε M ](π1p 11 +π1p 12 +π2p 21 +π3p 31 )-π2p 23 -π3p 33 ,φ=M / (1-e -λM )-1 / λ, λ represents the update rate of the data packet, M represents the transmission time of the data packet, m represents the length of the data packet, π represents the circumference of a circle, and L represents the number of bits of information transmitted. represents the average signal-to-noise ratio, δ=e L / m -1, E[ε M ] represents the average error rate in the short packet domain multiplexing mode, π1, π2, π3 represent the three steady-state probabilities of data packet transmission in the short packet domain multiplexing mode, and p ij Represents the probability of transition from state i to state j, i,j∈{1,2,3}.

[0049] The specific process is:

[0050] Step 11: Data packet transmission in the dual-queue system multiplexing mode can be represented by a Markov chain, where there are three states of data packet transmission, π1 represents the probability of data packets being transmitted through queue 1, π2 represents the probability of data packets being transmitted through queue 2, and π3 represents the probability of data packets being discarded due to the busyness of both queues. ij represents the probability of transition from state i to state j, for example, p 11 represents the probability of maintaining state 1, p 12 represents the probability of transition from state 1 to state 2, p 21 represents the probability of transition from state 2 to state 1, p 31 Representing the probability of transition from state 1 to 2, we can get the state transition matrix As shown in Table I:

[0051] Table I State Transition Probability

[0052]

[0053]

[0054] Step 12: Solve and π = πT, where π = [π1, π2, π3], we can obtain the steady-state probability of packet transmission, as shown in Table II.

[0055] Table II Markov process steady state probability

[0056]

[0057] Step 13: According to Tables I and II, the expected interval for receiving data packets can be obtained, as shown in Table III:

[0058] Table III Average packet arrival interval

[0059]

[0060] Step 14: According to Tables I, II and III, the average PAoI in the multiplexing mode can be obtained, as shown in (5).

[0061]

[0062] Step 15: Divide the average PAoI of the multiplexing mode in (5) by the average PAoI of the single-queue system obtained by formula (1) to obtain the PAoI gain G of the multiplexing mode in formula (4): C .

[0063] Step 2: According to the average PAoI of the single-queue system obtained by formula (1) and the average BLEP expression in the diversity mode (3), the average peak information age PAoI gain G of the short packet domain diversity mode compared to the single-queue system is obtained: D , as shown in (6):

[0064]

[0065] Step 3: In the case of low rate, λ is small and packets are rarely dropped due to queue busy. In this case, according to the transfer probability of packets in the dual-queue multiplexing mode, the PAoI gain of the multiplexing mode can be approximately expressed as:

[0066]

[0067] Where E[∈ M ] represents the average error rate in multiplexing mode.

[0068] Step 4: By comparing (6) and (7), we can obtain the signal-to-noise ratio threshold for switching the data packet update mode at a low rate and high efficiency. for The root of

[0069]

[0070] Step 5: At high rates, λ is large, and packets are transmitted through two queues with almost equal probability. The PAoI gain of the multiplexing mode can be approximately expressed as:

[0071]

[0072] Where E[∈ S ] represents the average error rate in diversity mode.

[0073] Step 6: By comparing (6) and (9), we can obtain the signal-to-noise ratio threshold for switching the data packet update mode at a high rate and high efficiency. , as shown in (10).

[0074]

[0075] Step 7: Select the transmission mode according to the signal-to-noise ratio threshold, specifically:

[0076] In the case of high rate, when the average signal-to-noise ratio of the dual-queue short packet system is greater than or equal to the signal-to-noise ratio threshold in the case of high rate, the short packet domain multiplexing mode is adopted, otherwise, the short packet domain diversity mode is adopted;

[0077] In the case of low rate, when the average signal-to-noise ratio of the dual-queue short packet system is greater than or equal to the signal-to-noise ratio threshold in the case of low rate, the short packet domain multiplexing mode is adopted, otherwise, the short packet domain diversity mode is adopted.

[0078] In order to verify the performance of the method of the present invention, a simulation experiment was carried out:

[0079] Experiment 1

[0080] Assuming that the packet update rate is fixed at 0.5packet / ms and 5packets / ms, and the packet length is fixed at 150, the relationship between the average PAoI and the signal-to-noise ratio can be obtained by changing the signal-to-noise ratio. Figure 3 As shown, it can be seen that the theoretically derived PAoI expression and the signal-to-noise ratio threshold (Formula (6) and Formula (10)) at low and high rates perfectly match the numerical results, which illustrates the effectiveness of the high-efficiency mode switching method derived in the present invention.

[0081] Experiment 2

[0082] Assuming that the packet length is fixed at m = 150, by adjusting the update rate and signal-to-noise ratio, we can obtain the joint impact of rate and signal-to-noise ratio on the selection of high-efficiency mode, and show the applicable range of different modes. Figure 4 As shown, it is demonstrated that the high-efficiency transmission mode selection method analyzed by the present invention is effective and applicable.

[0083] Example 2

[0084] Reference Figure 5 To describe the embodiment of the present disclosure Figure 2 The device corresponding to the method shown is a high-efficiency transmission mode selection device for a dual-queue short packet system, the device 100 includes: an average peak information age PAoI gain acquisition module 101, which is used to obtain the average peak information age PAoI gain G of the short packet domain multiplexing mode and the short packet domain diversity mode compared with the single queue system according to the queuing theory and the short packet transmission theory. C , G D ; Signal-to-noise ratio threshold acquisition module 102, for according to G C , G D , and the transfer probability of the data packet in the dual-queue multiplexing mode are respectively derived to obtain the signal-to-noise ratio threshold for switching the high-efficiency transmission mode of the data packet update under high-speed and low-speed conditions; the transmission mode selection module 103 is used to select the transmission mode according to the signal-to-noise ratio threshold, specifically: under high-speed conditions, when the average signal-to-noise ratio of the dual-queue short packet system is greater than or equal to the signal-to-noise ratio threshold under high-speed conditions, the short packet domain multiplexing mode is adopted, otherwise, the short packet domain diversity mode is adopted; under low-speed conditions, when the average signal-to-noise ratio of the dual-queue short packet system is greater than or equal to the signal-to-noise ratio threshold under low-speed conditions, the short packet domain multiplexing mode is adopted, otherwise, the short packet domain diversity mode is adopted. In addition to these three modules, the device 100 may also include other components, however, since these components are irrelevant to the content of the embodiments of the present disclosure, their illustration and description are omitted here.

[0085] The specific working process of the high-efficiency transmission mode selection device 100 for a dual-queue short packet system refers to the description of the embodiment 1 of the high-efficiency transmission mode selection method for a dual-queue short packet system, which will not be repeated here.

[0086] Example 3

[0087] The device of the embodiment of the present invention can also be used by Figure 6 The architecture of the computing device shown is implemented. Figure 6 The architecture of the computing device is shown. Figure 6As shown, computer system 201, system bus 203, one or more CPUs 204, input / output components 202, memory 205, etc. Memory 205 can store various data or files used for computer processing and / or communication and program instructions executed by the CPU, and the program instructions include executing the method described in Example 1. Figure 6 The architecture shown is only exemplary and can be adjusted according to actual needs when implementing different devices. Figure 6 One or more components in .

[0088] Example 4

[0089] The embodiment of the present invention may also be implemented as a computer-readable storage medium. The computer-readable storage medium according to the embodiment stores computer-readable instructions. When the computer-readable instructions are executed by a processor, the high-efficiency transmission mode selection method for the dual-queue short packet system according to Embodiment 1 of the present invention described with reference to the above drawings may be executed.

[0090] In view of the unclear timeliness gain of the multiplexing and diversity transmission modes in the dual-queue short packet domain, the high-efficiency transmission mode selection method, device and computer storage medium provided by the above embodiments are summarized. First, according to the queuing theory and short packet transmission theory, the last-come-first-served system with a queue capacity of 0 is considered, and the average PAoI of the two transmission modes is derived with respect to the signal-to-noise ratio and the update rate. Then, according to the approximate method such as the Taylor first-order expansion formula of the e-index, the PAoI gain of the two transmission modes compared with the single-queue system is analyzed. According to the PAoI gain and the transfer probability of the data packet in the dual-queue multiplexing mode, the signal-to-noise ratio threshold of the high-efficiency transmission mode switching under high-rate and low-rate conditions is derived respectively; finally, the transmission mode is selected according to the signal-to-noise ratio threshold. The beneficial effect finally obtained is: the high-efficiency transmission mode is selected by the signal-to-noise ratio threshold, and the effectiveness of the high-efficiency transmission mode selection method is reflected according to the average peak information age PAoI, and the multiplexing mode transmission in the dual-queue short packet domain is fully utilized to obtain a higher transmission rate, thereby reducing the advantage of AoI and the advantage of the diversity transmission mode that can obtain higher transmission reliability.

[0091] In this document, the terms "comprises," "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, such that a step or method that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such step or method.

[0092] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A high-efficiency transmission mode selection method for a dual-queue short packet system, characterized in that: The method comprises the following steps: According to the queuing theory and short packet transmission theory, the average peak information age PAoI gain G of the short packet domain multiplexing mode and the short packet domain diversity mode compared with the single queue system is obtained respectively. C , G D ; According to G C , G D , and the transfer probability of the data packet in the dual-queue multiplexing mode are respectively derived to obtain the signal-to-noise ratio threshold of the high-efficiency transmission mode switching of the data packet update under high-rate and low-rate conditions; The transmission mode is selected based on the signal-to-noise ratio threshold, specifically: In the case of high rate, when the average signal-to-noise ratio of the dual-queue short packet system is greater than or equal to the signal-to-noise ratio threshold in the case of high rate, the short packet domain multiplexing mode is adopted, otherwise, the short packet domain diversity mode is adopted; In the case of low rate, when the average signal-to-noise ratio of the dual-queue short packet system is greater than or equal to the signal-to-noise ratio threshold in the case of low rate, the short packet domain multiplexing mode is adopted, otherwise, the short packet domain diversity mode is adopted; The short packet domain multiplexing mode has an average peak information age PAoI gain G compared to the single queue system. C for: where ζ1=1-E[ε M ](π1p 11 +π1p 12 +π2p 21 +π3p 31 )-π2p 23 -π3p 33 ,φ=M / (1-e -λM )-1 / λ, λ represents the update rate of the data packet, M represents the transmission time of the data packet, m represents the length of the data packet, π represents the circumference of a circle, and L represents the number of bits of information transmitted. represents the average signal-to-noise ratio, δ=e L / m -1, E[ε M ] represents the average error rate in the short packet domain multiplexing mode, π1, π2, π3 represent the three steady-state probabilities of data packet transmission in the short packet domain multiplexing mode, and p ij Represents the probability of transition from state i to state j, i,j∈{1,2,3}; The short packet domain diversity mode has an average peak information age PAoI gain G compared to the single queue system. D for: The data packet updates the signal-to-noise ratio threshold for high-efficiency transmission mode switching at low rates for The root of The data packet updates the signal-to-noise ratio threshold for high-speed transmission mode switching at high rates for:

2. A high-efficiency transmission mode selection device for a dual-queue short packet system, characterized in that: The device comprises: The average peak information age PAoI gain acquisition module is used to obtain the average peak information age PAoI gain G of the short packet domain multiplexing mode and the short packet domain diversity mode compared with the single queue system according to the queuing theory and the short packet transmission theory. C , G D ; The signal-to-noise ratio threshold acquisition module is used to obtain the signal-to-noise ratio threshold according to G C , G D , and the transfer probability of the data packet in the dual-queue multiplexing mode are respectively derived to obtain the signal-to-noise ratio threshold of the high-efficiency transmission mode switching of the data packet update under high-rate and low-rate conditions; The transmission mode selection module is used to select the transmission mode according to the signal-to-noise ratio threshold, specifically: In the case of high rate, when the average signal-to-noise ratio of the dual-queue short packet system is greater than or equal to the signal-to-noise ratio threshold in the case of high rate, the short packet domain multiplexing mode is adopted, otherwise, the short packet domain diversity mode is adopted; In the case of low rate, when the average signal-to-noise ratio of the dual-queue short packet system is greater than or equal to the signal-to-noise ratio threshold in the case of low rate, the short packet domain multiplexing mode is adopted, otherwise, the short packet domain diversity mode is adopted; The short packet domain multiplexing mode has an average peak information age PAoI gain G compared to the single queue system. C for: where ζ1=1-E[ε M ](π1p 11 +π1p 12 +π2p 21 +π3p 31 )-π2p 23 -π3p 33 ,φ=M / (1-e -λM )-1 / λ, λ represents the update rate of the data packet, M represents the transmission time of the data packet, m represents the length of the data packet, π represents the circumference of a circle, and L represents the number of bits of information transmitted. represents the average signal-to-noise ratio, δ=e L / m -1, E[ε M ] represents the average error rate in the short packet domain multiplexing mode, π1, π2, π3 represent the three steady-state probabilities of data packet transmission in the short packet domain multiplexing mode, and p ij Represents the probability of transition from state i to state j, i,j∈{1,2,3}; The short packet domain diversity mode has an average peak information age PAoI gain G compared to the single queue system. D for: The data packet updates the signal-to-noise ratio threshold for high-efficiency transmission mode switching at low rates for The root of The data packet updates the signal-to-noise ratio threshold for high-speed transmission mode switching at high rates for:

3. A high-efficiency transmission mode selection device for a dual-queue short packet system, characterized in that: include: processor; and a memory, wherein a computer executable program is stored in the memory, and when the computer executable program is executed by the processor, the method of claim 1 is performed. 4 . A computer-readable storage medium having instructions stored thereon, wherein when the instructions are executed by a processor, the processor is caused to perform the method according to claim 1 .

Images