Space-ground integrated network service access control method

Abstract

The invention provides a space-ground integrated network service access control method, which comprises the following steps of: 1, calculating the wireless network resource bearing capacity and the wireless network resource utilization rate of a ground network and the service bearing demand of a user terminal; step 2, judging whether residual wireless network resources of the ground network meet the service bearing requirement of the user terminal, if not, refusing the access of the ground network, and executing step 3; otherwise, the ground network allocates wireless resources to the user terminal, and the current access is completed; step 3, if the user terminal passes a period of backoff time and does not reach the preset backoff times, executing the step 2 again, otherwise, executing the step 4; step 4, calculating a wireless network resource utilization rate of the non-ground network; and step 5, allocating wireless network resources to the user terminal according to a preset condition, and completing the current access.

Description

Technical Field

[0001] The present invention relates to a method for controlling access to network services, and in particular to a method for controlling access to space-ground integrated network services. Background Art

[0002] What is provided in this section is only background information related to the present disclosure, and it is not necessarily prior art.

[0003] With the large-scale construction of 5G commercial networks, the industry has shifted the focus of technology research to 6G. At present, the relevant standards for 6G have not started to be formulated, but the prelude to the global research on 6G has been launched. The 6G network to be commercialized after 2030 is expected to achieve truly global seamless coverage.

[0004] For the realization of global seamless coverage, it will surely be based on terrestrial networks and integrate non-terrestrial networks such as satellite communications, and adopt multiple communication methods to build a space-ground integrated network architecture.

[0005] In the space-ground integrated network architecture, both the terrestrial network and the non-terrestrial network can provide network access services for user terminals. In this case, how the terrestrial network and the non-terrestrial network cooperate to jointly provide network access services for user terminals is a topic that needs to be studied.

[0006] For user terminals supporting the space-ground integrated network, both the terrestrial network and the non-terrestrial network can allow them to access, that is, both the terrestrial network and the non-terrestrial network can provide network access services for them. When a user terminal has services to transmit and makes an access selection between the terrestrial network and the non-terrestrial network, the current solution mainly makes a network selection based on signal strength, and preferably accesses the network with a larger signal strength, that is: the main factor considered is network coverage. However, in an actual network, for a network with good wireless coverage, it will surely carry more services, thereby continuously increasing the utilization rate of wireless resources, thus affecting the stability of network operation and network quality.

[0007] It should be noted that the information disclosed in the above background art section is only used to strengthen the understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art. Summary of the Invention

[0008] Object of the Invention: The technical problem to be solved by the present invention is to provide a method for controlling access to space-ground integrated network services in view of the deficiencies of the prior art.

[0009] To solve the above technical problem, the present invention discloses a method for controlling access to space-ground integrated network services, including the following steps:

[0010] Step 1, calculate the wireless network resource carrying capacity, wireless network resource utilization rate of the terrestrial network, and the service carrying demand of the user terminal;

[0011] Step 2, determine whether the remaining wireless network resources of the terrestrial network can meet the service carrying demand of the user terminal. If not, the terrestrial network rejects this access and executes Step 3; otherwise, the terrestrial network allocates wireless resources to the user terminal to complete the current access;

[0012] Step 3, if the user terminal has gone through a backoff time and has not reached the preset number of backoff times, then re - execute Step 2, otherwise execute Step 4;

[0013] Step 4, calculate the wireless network resource utilization rate of the non - terrestrial network;

[0014] Step 5, allocate wireless network resources to the user terminal according to the preset conditions to complete the current access.

[0015] Further, the calculation of the wireless network resource carrying capacity, wireless network resource utilization rate of the terrestrial network, and the service carrying demand of the user terminal in Step 1 includes:

[0016] Step 1 - 1, calculate the wireless network resource carrying capacity of the terrestrial network;

[0017] Step 1 - 2, calculate the wireless network resource utilization rate of the terrestrial network;

[0018] Step 1 - 3, calculate the service carrying demand of the user terminal, that is, the wireless network resources required for the user terminal to carry services.

[0019] Further, the calculation of the wireless network resource carrying capacity of the terrestrial network in Step 1 - 1 is as follows:

[0020] Let the base station BS of the terrestrial network gro , within a period of time T, the total service volume carried is THA gro-t , the total number of wireless network resources used is RB gro-use-to , then the average service volume THA that the terrestrial network can carry per unit time per unit wireless network resource gro-ave , the calculation method is as follows:

[0021]

[0022] Further, the calculation of the wireless network resource utilization rate of the terrestrial network in Step 1 - 2 is as follows:

[0023] Suppose within a unit time, the base station BS of the terrestrial network gro , the number of wireless network resources that have been used is RB gro-use , then the base station BS of the terrestrial networkgro Wireless network resource utilization rate UT gro-wir , the calculation method is as follows:

[0024]

[0025] Among them, RB gro-tol is the total number of wireless network resources owned by the ground network base station BS gro .

[0026] Furthermore, the calculation of the service bearing demand of the user terminal described in steps 1-3 is as follows:

[0027] Suppose that in a unit time, the traffic volume that the user terminal UT needs to transmit is THA UT , and the wireless network resources required to carry this traffic volume are RB gro-UT . The service bearing demand RB of the user terminal gr , the calculation method is as follows:

[0028]

[0029] Among them, THA gro-av is the average traffic volume that the ground network can carry per unit time per unit of wireless network resources.

[0030] Furthermore, the judgment of whether the remaining wireless network resources of the ground network meet the service bearing demand of the user terminal described in step 2 includes:

[0031] Step 2-1, according to the service bearing demand RB of the user terminal gro-UT , estimate the wireless network resource utilization rate UT of the ground network gro-wir-rt ;

[0032] Step 2-2, judge whether the remaining wireless network resources of the ground network meet the service bearing demand of the user terminal according to the following conditions:

[0033] UT gro-wir-r ≤UT wir-max

[0034] Among them, UT wir-max is the limit value of the wireless network resource utilization rate allowed by the entire network system.

[0035] Furthermore, the estimation of the wireless network resource utilization rate UT of the ground network described in step 2-1 gro-wir-rt , is as follows:

[0036]

[0037] Furthermore, the backoff time described in step 3, the calculation method is as follows:

[0038] T back = RAND() * T Fram * UT gro-wir-rt * N

[0039] Wherein, RAND() is a random number generation function for generating a random number between 0 and 1; T Fram is the frame length of the 5G network radio frame; N is the number of backoffs.

[0040] Further, calculating the radio network resource utilization rate of the non-terrestrial network described in step 4 includes:

[0041] Suppose that in the non-terrestrial network base station BS sky within a unit time, the number of radio resources already used is RB sky-u , then the radio network resource utilization rate UT sky of the non-terrestrial network base station BS sky-wir is calculated as follows:

[0042]

[0043] Wherein, RB sky-tol is the total number of radio network resources owned by the non-terrestrial network base station BS sky .

[0044] Further, allocating radio network resources to the user terminal according to the preset conditions described in step 5 specifically includes:

[0045] Step 5-1, if the condition is satisfied:

[0046] UT wir-m - UT sky-wir > 0

[0047] Then execute step 5-2, allow the user terminal to access the non-terrestrial network, and allocate radio network resources to it; otherwise, reject the user terminal from accessing the non-terrestrial network;

[0048] Step 5-2, the non-terrestrial network allocates radio network resources to the user terminal as follows:

[0049] If the condition is satisfied:

[0050] (UT wir-m - UT sky-wir ) * RB sky-tol ≥ RB gro-UT

[0051] Then the non-terrestrial network base station BS sky allocates RB gro-UT radio network resources to the user terminal, otherwise, execute step 5-3;

[0052] Step 5-3: The terrestrial network and the non-terrestrial network jointly allocate wireless network resources for the user terminal, specifically as follows:

[0053] If the following conditions are met:

[0054]

[0055] then the terrestrial network base station BS gro allocates wireless network resources for the user terminal, and the non-terrestrial network base station BS sky allocates wireless network resources for the user terminal;

[0056] otherwise, the terrestrial network base station BS gro allocates wireless network resources for the user terminal, and the non-terrestrial network base station BS sky allocates wireless network resources for the user terminal.

[0057] Beneficial effects:

[0058] 1. The solution proposed in this application can realize the bearer selection between the terrestrial network and the non-terrestrial network for the user terminal and preferably select the terrestrial network in the case of integrated space-ground networking to improve the overall network performance of the user terminal.

[0059] 2. The solution proposed in this application adopts a random backoff mechanism when the terrestrial network is busy, that is, when the utilization rate of wireless network resources is high, and the backoff time is related to the utilization rate of wireless network resources in the terrestrial network. The higher the utilization rate of wireless network resources, the longer the backoff time, which can avoid further aggravating the busyness of the wireless network and prevent network congestion.

[0060] 3. The backoff mechanism adopted by the user terminal to access the terrestrial network in the solution proposed in this application sets a maximum number of backoffs to avoid the situation where the user terminal makes infinite access attempts due to the busyness of the terrestrial network.

[0061] 4. The solution proposed in this application allocates relatively more wireless network resources for the user when the user terminal accesses the non-terrestrial network under the condition that the wireless network resources of the non-terrestrial network permit, so as to improve the network bearing capacity and reduce the overall data transmission delay of the user terminal.

[0062] 5. The solution proposed in this application jointly allocates wireless resources by the terrestrial network and the non-terrestrial network and jointly provides services for the user terminal when the utilization rates of wireless resources of both the terrestrial network and the non-terrestrial network are high, so as to ensure the network performance of the user terminal. Description of the Drawings

[0063] The following further specifically describes the present invention in conjunction with the accompanying drawings and specific embodiments, and the above and / or other advantages of the present invention will become clearer.

[0064] Figure 1 is a schematic diagram of the overall process of the present invention. Specific embodiments

[0065] A space-ground integrated network access control method proposed in this application has the following general idea: in a space-ground integrated network, when a user terminal accesses the network, it preferably accesses the terrestrial network with low latency characteristics to improve the network performance of the user terminal; when the utilization rate of wireless resources in the terrestrial network is relatively high, after the user terminal fails to access after multiple attempts, it selects to access the non-terrestrial network, while ensuring the network access of the user terminal, and improving the network performance of the user terminal by allocating more wireless resources; when the utilization rates of wireless resources in both the terrestrial network and the non-terrestrial network are relatively high, the terrestrial network and the non-terrestrial network jointly allocate wireless resources to provide network access services for the user terminal. In this way, while providing the network access function for the user terminal, it is possible to avoid unilaterally increasing the utilization rate of wireless network resources in the terrestrial network and the non-terrestrial network, so as to improve the stability of the overall network operation.

[0066] (1) Scheme principle

[0067] In a space-ground integrated network, the terrestrial network and the non-terrestrial network jointly provide network access services for users. When a user has a service to transmit, due to the advantages of large bandwidth and low latency of the terrestrial network, the user preferably accesses the terrestrial network. When the terrestrial network is busy, that is, when the utilization rate of wireless resources is relatively high, after the user terminal fails to access after multiple attempts, the user terminal will select to access the non-terrestrial network (the transmission latency of the non-terrestrial network is large). When the utilization rates of wireless resources in both the terrestrial network and the non-terrestrial network are relatively high, the terrestrial network and the non-terrestrial network jointly allocate wireless resources to provide network access services for the user terminal.

[0068] (2) As Figure 1 shown, the technical solution is described in detail as follows:

[0069] Step 1: Calculate the wireless resource carrying capacity of the terrestrial network.

[0070] Assume that a certain base station BS of the terrestrial network gro , within a certain period T, after statistics, the total traffic volume THA it carries gro-tol , and the total number of wireless resources used is RB gro-use-tol , then the average traffic volume THA that the terrestrial network can carry per unit wireless resource per unit time gro-ave, can be obtained through the following formula.

[0071]

[0072] Step 2: Calculate the wireless network resource utilization rate of the terrestrial network.

[0073] Assume that within a certain unit of time, the terrestrial network base station BS gro , the number of wireless network resources already used is RB gro-use , then the wireless network resource utilization rate UT gro of the terrestrial network base station BS gro-wir , can be obtained through the following formula.

[0074]

[0075] Among them, RB gro-t is the total number of wireless network resources owned by the terrestrial network base station BS gro .

[0076] Step 3: Calculate the wireless network resources required for user terminal service bearing.

[0077] Assume that within a certain unit of time, the traffic volume that the user terminal UT needs to transmit is THA UT , and the wireless network resources RB gro-UT required to carry this traffic volume can be obtained through the following formula.

[0078]

[0079] Among them, THA gro-ave is the average traffic volume that the terrestrial network can carry per unit of wireless network resources per unit of time.

[0080] Step 4: Determine whether the remaining wireless network resources of the terrestrial network can meet the service bearing requirements of the user terminal.

[0081] According to the service bearing requirements of the user terminal, estimate the wireless network resource utilization rate UT gro-wir-r of the terrestrial network, which can be obtained through the following formula.

[0082]

[0083] If the condition (5) is not met, the terrestrial network rejects the access of this user terminal, and then executes Step 5; otherwise, execute Step 6.

[0084] UT gro-wir-rt ≤UT wir-max (5)

[0085] Among them, UTwir-max is the limit value of the utilization rate of wireless network resources allowed by the system. If the utilization rate of wireless network resources is greater than this limit value, network congestion may occur, and thus the situation of unstable network operation may occur.

[0086] Step 5: After the user terminal randomly backs off for a period of time, it tries to access the terrestrial network again.

[0087] The random backoff time of the user terminal is related to the utilization rate of wireless network resources of the terrestrial network. The higher the utilization rate of wireless network resources of the terrestrial network, the longer the backoff time of the user terminal. The specific backoff time T back can be obtained by calculating the following formula.

[0088] T back = RAND() * T Fram * UT gro-wir-rt * N (6)

[0089] where RAND() is a random number generation function that can generate a random number between 0 and 1; T Fram is the frame length of the wireless frame in the 5G network; UT gro-wir-r is the utilization rate of wireless network resources of the terrestrial network; N is the number of random backoffs. For the first backoff, N is equal to 1, and for the second backoff, N is equal to 2.

[0090] After the user terminal randomly backs off for T back time, if the number of random backoffs N at this time satisfies the following condition (7), then execute Step 4, otherwise execute Step 7

[0091] N ≤ N max (7)

[0092] where N max is the maximum number of random backoffs, and its specific value can be determined by the operator according to the network load situation.

[0093] Step 6: The terrestrial network allocates wireless resources to the user terminal and allows it to access the terrestrial network.

[0094] Allowing the user terminal to access the terrestrial network, the terrestrial network base station BS gro allocates RB gro-U wireless network resources for wireless service transmission to the user terminal, and then execute Step 11.

[0095] Step 7: Calculate the utilization rate of wireless network resources of the non-terrestrial network.

[0096] Assume that in a certain unit of time, the non-terrestrial network base station BS sky has used the number of wireless resources as RB sky-u , then the non-terrestrial network base station BS skyUT of the wireless network resource utilization rate sky-w , which can be obtained by calculating through the following formula.

[0097]

[0098] Among them, RB sky-tol is the total number of wireless network resources owned by the non-terrestrial network base station BS sky .

[0099] Step 8: Judge the wireless network resource load situation of the non-terrestrial network.

[0100] If the condition (9) is satisfied, then execute Step 9, allow the user terminal to access the non-terrestrial network, and allocate wireless network resources for it; otherwise, reject the user terminal from accessing the non-terrestrial network, and then execute Step 11.

[0101] UT wir-max -UT sky-w >0 (9)

[0102] Step 9: The non-terrestrial network allocates wireless network resources for the user terminal.

[0103] If the condition (10) is satisfied, then the non-terrestrial network base station BS sky allocates RB gro-UT wireless network resources for the user terminal, and then execute Step 11; otherwise, execute Step 10.

[0104] (UT wir-max -UT sky-wir )*RB sk ≥RB gro-UT (10)

[0105] Since the non-terrestrial network has a better wireless channel environment, less frequency interference, and a higher signal-to-noise ratio compared to the terrestrial network, the service carrying capacity of a unit of wireless network resources per unit time is stronger. Therefore, to carry the same amount of traffic per unit time, fewer wireless network resources are required. However, at the same time, since the non-terrestrial network is far from the user terminal and the transmission delay is large, when the wireless network resources of the non-terrestrial network permit, allocate wireless network resources for the user terminal according to the wireless network resource requirements (RB gro-UT wireless network resources) when carried by the terrestrial network, so as to reduce the overall delay of the wireless data transmission of the user terminal and improve the network performance.

[0106] Step 10: The terrestrial network and the non-terrestrial network jointly allocate wireless network resources for the user terminal.

[0107] Judge whether the condition (11) holds:

[0108]

[0109] If it holds, then: The terrestrial network base station BS gro allocates wireless network resources to the user terminal, and the non-terrestrial network base station BS sky allocates wireless network resources to the user terminal, so that the terrestrial network and the non-terrestrial network jointly complete the purpose of providing services to the user terminal.

[0110] Otherwise: The terrestrial network base station BS gro allocates wireless network resources to the user terminal, and the non-terrestrial network base station BS sky allocates wireless network resources to the user terminal, and the terrestrial network and the non-terrestrial network jointly provide services to the user terminal, and then step 11 is executed.

[0111] Step 11: After waiting for a period of time, step 1 is executed.

[0112] Embodiment 1:

[0113] In an embodiment of a specific actual scenario, the foregoing technical solution is as follows:

[0114] Step 1: Calculate the bearing capacity of the terrestrial network wireless network resources.

[0115] Suppose a certain base station BS gro in the terrestrial network, within a certain period of 10 seconds, after statistics, the total traffic volume THA gro-t borne by it is 100 Gbps, and the total number of wireless network resources RB gro-use-to used is 100. Then the average traffic volume THA gro-a that can be borne by the terrestrial network per unit time per unit wireless network resource can be calculated through the following formula.

[0116]

[0117] Step 2: Calculate the utilization rate of the wireless network resources of the terrestrial network.

[0118] Suppose at a certain unit time, the terrestrial network base station BS gro , the number of wireless network resources RB gro-use already used is 55. Then the utilization rate UT gro of the wireless network resources of the terrestrial network base station BS gro-w can be calculated through the following formula.

[0119]

[0120] Among them, RB gro-tol is the total number of wireless network resources owned by the ground network base station BS gro Step 3: Calculate the wireless network resources required for user terminal service bearer.

[0121] Assume that in a certain unit time, the traffic volume THA that the user terminal UT needs to transmit

[0122] is 500 Mbps, and the wireless network resources RB UT required to carry this traffic volume can be calculated through the following formula. gro- Step 4: Determine whether the remaining wireless network resources of the ground network meet the service bearer requirements of the user terminal.

[0123]

[0124] Among them, THA gro-a is the average traffic volume that the ground network can carry per unit time per unit of wireless network resources.

[0125] Step 4: Determine whether the remaining wireless network resources of the ground network meet the service bearer requirements of the user terminal.

[0126] According to the service bearer requirements of the user terminal, estimate the wireless network resource utilization rate UT gro-wir-r of the ground network, which can be calculated through the following formula.

[0127]

[0128] Since the condition of UT gro-wir-rt ≤UT wir-max is satisfied, that is: 60% ≤ 70%. Therefore, execute Step 6. UT wir-m is the limit value of the wireless network resource utilization rate allowed by the system, and the value here is 70%.

[0129] Step 6: The ground network allocates wireless resources to the user terminal and allows it to access the ground network.

[0130] Allow the user terminal to access the ground network, and the ground network base station BS gro allocates 5 wireless network resources for the user terminal for wireless service transmission, that is, RBgro-UT = 5, and then execute Step 11.

[0131] Step 11: After waiting for a period of time, execute Step 1.

[0132] Embodiment 2:

[0133] In another specific actual scenario embodiment, the foregoing technical solution is as follows:

[0134] Step 1: Calculate the wireless network resource carrying capacity of the terrestrial network.

[0135] Assume a base station BS in the terrestrial network gro , within a certain period of 10 seconds, after statistics, the total traffic volume THA it carries gro-tol is 100 Gbps, and the total number of wireless network resources RB used gro-use-tol is 100. Then, the average traffic volume THA that the terrestrial network can carry per unit time per unit wireless network resource gro-ave can be calculated through the following formula.

[0136]

[0137] Step 2: Calculate the utilization rate of the wireless network resources of the terrestrial network.

[0138] Assume that in a certain unit of time, the base station BS of the terrestrial network gro , the number of wireless network resources RB that have been used gro-use is 65. Then, the utilization rate UT of the wireless network resources of the base station BS of the terrestrial network gro can be calculated through the following formula. gro-wir where, RB

[0139]

[0140] is the total number of wireless network resources owned by the base station BS of the terrestrial network gro-tol gro

[0141] Step 3: Calculate the wireless network resources required for the user terminal to carry traffic.

[0142] Assume that in a certain unit of time, the traffic volume THA that the user terminal UT needs to transmit UT is 800 Mbps, and the wireless network resources RB required to carry this traffic volume gro-UT can be calculated through the following formula.

[0143]

[0144] where, THA gro-ave is the average traffic volume that the terrestrial network can carry per unit time per unit wireless network resource.

[0145] Step 4: Determine whether the remaining wireless network resources of the terrestrial network can meet the traffic carrying requirements of the user terminal.

[0146] According to the traffic carrying requirements of the user terminal, estimate the utilization rate UT of the wireless network resources of the terrestrial network gro-wir-rt ​​, which can be obtained by the following formula.

[0147]

[0148] Since UT gro-wir-rt ≤UT wir-max This condition does not hold, that is: the condition 73% ≤ 70% does not hold. Therefore, the terrestrial network rejects the access of this user terminal, and then step 5 is executed.

[0149] UT wir-max is the limit value of the utilization rate of wireless network resources allowed by the system, and the value here is 70%.

[0150] Step 5: After the user terminal randomly backs off for a period of time, it tries to access the terrestrial network again.

[0151] The random backoff time of the user terminal is related to the utilization rate of wireless network resources of the terrestrial network. The higher the utilization rate of wireless network resources of the terrestrial network, the longer the backoff time of the user terminal. The specific backoff time T back can be obtained by the following formula.

[0152] T back = RAND() * T Fram * UT gro-wir-rt * N

[0153] where RAND() is a random number generation function that can generate a random number between 0 and 1, and the random number generated here is 0.8; T Fram is the frame length of the 5G network wireless frame, and the value here is 10 milliseconds; UT gro-wir-rt is the utilization rate of wireless network resources of the terrestrial network, and the calculated value is 65%; N is the number of random backoffs. Assuming it is the fourth backoff, so N is equal to 4.

[0154] T back = RAND() * T Fram * UT gro-wir-rt * N = 0.8 * 10 * 65% * 4 = 20.8 milliseconds

[0155] After the user terminal randomly backs off for 20.8 milliseconds, if the number of random backoffs N at this time does not satisfy the condition N ≤ N max , that is: 4 ≤ 3, this condition does not hold. Therefore, step 7 is executed

[0156] where N max is the maximum number of random backoffs, and its specific value can be determined by the operator according to the network load situation. The value here is 3.

[0157] Step 7: Calculate the utilization rate of wireless network resources of the non-terrestrial network.

[0158] Assume that within a certain unit of time, for a non-terrestrial network base station BS sky , the number of radio resources RB already used sky-use is 40, and for the non-terrestrial network base station BS sky , the total number of radio network resources RB owned sky-tol is 80. Then, the radio network resource utilization rate UT sky of the non-terrestrial network base station BS sky-wir can be obtained through the following formula.

[0159]

[0160] Step 8: Determine the radio network resource load condition of the non-terrestrial network.

[0161] Since the condition UT wir-max -UT sky-wir > 0 holds, that is, the condition 70% - 60% > 0 holds. Therefore, execute Step 9 to allow the user terminal to access the non-terrestrial network and allocate radio network resources for it.

[0162] Step 9: The non-terrestrial network allocates radio network resources for the user terminal.

[0163] Since (UT wir-m -UT sky-w ) * RB sky-tol ≥ RB gro-UT holds, that is, (70% - 60%) * 80 = 8 ≥ 8 holds. Therefore, the number of radio network resources RB sky allocated by the non-terrestrial network base station BS for the user terminal gro-UT is 8, and then execute Step 11.

[0164] Step 11: After waiting for a period of time, execute Step 1.

[0165] Embodiment 3:

[0166] In another specific actual scenario embodiment, the foregoing technical solution is as follows:

[0167] Step 1: Calculate the radio network resource carrying capacity of the terrestrial network.

[0168] Assume that for a certain base station BS of the terrestrial network gro , within a certain period of 10 seconds, after statistics, the total traffic volume THA gro-t it carries is 100 Gbps, and the total number of radio network resources RB used gro-use-tol is 100. Then, the average traffic volume THA that can be carried by the terrestrial network per unit of radio network resource per unit of time gro-ave, can be obtained by calculating through the following formula.

[0169]

[0170] Step 2: Calculate the wireless network resource utilization rate of the terrestrial network.

[0171] Assume that in a certain unit of time, the terrestrial network base station BS gro , the number of wireless network resources RB gro-use that has been used is 65, then the wireless network resource utilization rate UT gro of the terrestrial network base station BS gro-w , can be obtained by calculating through the following formula.

[0172]

[0173] Among them, RB gro-t is the total number of wireless network resources owned by the terrestrial network base station BS gro .

[0174] Step 3: Calculate the wireless network resources required for user terminal service bearer.

[0175] Assume that in a certain unit of time, the traffic volume THA UT that the user terminal UT needs to transmit is 800 Mbps, and the wireless network resources RB gro-UT required to bear this traffic volume can be obtained by calculating through the following formula.

[0176]

[0177] Among them, THA gro-ave is the average traffic volume that the terrestrial network can bear per unit of time per unit of wireless network resources.

[0178] Step 4: Determine whether the remaining wireless network resources of the terrestrial network can meet the service bearer requirements of the user terminal.

[0179] According to the service bearer requirements of the user terminal, estimate the wireless network resource utilization rate UT gro-wir-r of the terrestrial network, which can be obtained by calculating through the following formula.

[0180]

[0181] Since the condition UT gro-wir-r ≤ UT wir-max does not hold, that is: the condition 73% ≤ 70% does not hold, so the terrestrial network rejects this user terminal access, and then execute Step 5.

[0182] UT wir-mIt is the limit value of the utilization rate of wireless network resources allowed by the system, and the value here is 70%.

[0183] Step 5: After the user terminal randomly backs off for a period of time, it tries to access the terrestrial network again.

[0184] The random back-off time of the user terminal is related to the utilization rate of wireless network resources of the terrestrial network. The higher the utilization rate of wireless network resources of the terrestrial network, the longer the back-off time of the user terminal. The specific back-off time T back can be calculated by the following formula.

[0185] T back = RAND() * T Fram * UT gro-wir-r * N

[0186] Among them, RAND() is a random number generation function that can generate a random number between 0 and 1. The random number generated here is 0.8; T Fram is the frame length of the 5G network wireless frame, and the value here is 10 milliseconds; UT gro-wir-rt is the utilization rate of wireless network resources of the terrestrial network, and the calculated value is 65%; N is the random back-off number. Assuming it is the fourth back-off, so N is equal to 4.

[0187] T back = RAND() * T Fram * UT gro-wir-rt * N = 0.8 * 10 * 65% * 4 = 20.8 milliseconds

[0188] After the user terminal randomly backs off for 20.8 milliseconds, if the random back-off number N at this time does not meet the condition N ≤ N max , that is: 4 ≤ 3, this condition is not established, so step 7 is executed

[0189] Among them, N max is the maximum random back-off number, and its specific value can be determined by the operator according to the network load situation. The value here is 3.

[0190] Step 7: Calculate the utilization rate of wireless network resources of the non-terrestrial network.

[0191] Assume that in a certain unit of time, the non-terrestrial network base station BS sky , the number of wireless resources already used RB sky-use is 50, and the non-terrestrial network base station BS sky owns the total number of wireless network resources RB sky-tol is 80. Then the utilization rate UT sky of the non-terrestrial network base station BS sky-wir can be calculated by the following formula.

[0192]

[0193] Step 8: Determine the load condition of the wireless network resources of the non-terrestrial network.

[0194] Since UT wir-m -UT sky-wir > 0 this condition is not satisfied, that is: 70% - 72.5% > 0, this condition is not satisfied, so step 10 is executed.

[0195] Step 10: The terrestrial network and the non-terrestrial network jointly allocate wireless network resources for the user terminal.

[0196]

[0197] Since the above condition is satisfied, the terrestrial network base station BS gro allocates for the user terminal a wireless network resource, and the non-terrestrial network base station BS sky allocates for the user terminal a wireless network resource, so that the terrestrial network and the non-terrestrial network jointly complete the purpose of providing services for the user terminal. Then step 11 is executed.

[0198] Step 11: After waiting for a period of time, execute step 1.

[0199] In a specific implementation, the present application provides a computer storage medium and a corresponding data processing unit. Among them, the computer storage medium can store a computer program, and when the computer program is executed by the data processing unit, it can run the inventive content of a method for controlling access to space-earth integrated network services provided by the present invention and some or all of the steps in the embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM), etc.

[0200] Those skilled in the art can clearly understand that the technical solutions in the embodiments of the present invention can be implemented by means of a computer program and its corresponding general hardware platform. Based on such an understanding, the technical solutions in the embodiments of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a computer program, that is, a software product. The computer program software product can be stored in the storage medium, including several instructions for causing a device (which can be a personal computer, a server, a single-chip microcomputer, an MCU, or a network device, etc.) including a data processing unit to execute the methods described in various embodiments or some parts of the embodiments of the present invention.

[0201] The present invention provides an idea and method for a space-ground integrated network service access control method. There are many methods and ways to specifically implement this technical solution. The above description is only a preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. Each component not clearly defined in this embodiment can be implemented by using existing technologies.

Claims

1. A method for access control of a space-ground integrated network service, characterized in that, Including the following steps: Step 1, calculate the wireless network resource carrying capacity, wireless network resource utilization rate of the terrestrial network, and the service carrying demand of the user terminal; Step 2, determine whether the remaining wireless network resources of the terrestrial network meet the service carrying demand of the user terminal. If not, the terrestrial network rejects this access and executes Step 3; otherwise, the terrestrial network allocates wireless resources to the user terminal to complete the current access; Step 3, if the user terminal has passed a backoff time and has not reached the preset number of backoff times, then re-execute Step 2; otherwise, execute Step 4; Step 4, calculate the wireless network resource utilization rate of the non-terrestrial network; Step 5, allocate wireless network resources to the user terminal according to the preset conditions to complete the current access.

2. The method for accessing and controlling services in a space-ground integrated network according to claim 1, wherein The calculation of the wireless network resource carrying capacity, wireless network resource utilization rate of the terrestrial network, and the service carrying demand of the user terminal in Step 1 includes: Step 1-1, calculate the wireless network resource carrying capacity of the terrestrial network; Step 1-2, calculate the wireless network resource utilization rate of the terrestrial network: Step 1-3, calculate the service carrying demand of the user terminal, that is, the wireless network resources required for the user terminal to carry services.

3. The integrated space-ground network service access control method according to claim 2, wherein The calculation of the wireless network resource carrying capacity of the terrestrial network in Step 1-1 is specifically as follows: Set up a base station BS of the ground network gro , within a period of time T, the total traffic carried is THA gro-t , the total number of wireless network resources used is RB gro-use-tol , then the average traffic volume that the ground network can carry per unit wireless network resource per unit time is THA gro-ave , the calculation method is as follows:

4. The method for controlling access to space-ground integrated network services according to claim 2, wherein The calculation of the wireless network resource utilization rate of the terrestrial network in Step 1-2 is specifically as follows: Suppose that within a unit time, the ground network base station BS gro , the number of wireless network resources already used is RB gro-u , then the wireless network resource utilization rate UT gro of the ground network base station BS gro-wir is calculated as follows: Among them, RB gro-tol is the total number of wireless network resources owned by the ground network base station BS gro ​ 5. The integrated space-ground network service access control method according to claim 2, characterized in that The calculation of the service carrying demand of the user terminal in Step 1-3 is specifically as follows: Suppose that in a unit time, the traffic volume that the user terminal UT needs to transmit is THA UT , and the radio network resources required to carry this traffic volume are RB gro-UT ; the service carrying requirement RB of the user terminal gro-UT , and the calculation method is as follows: Among them, THA gro-a is the average traffic volume that the ground network can carry per unit time per unit of wireless network resources.

6. The space-ground integrated network service access control method according to claim 2, wherein The determination of whether the remaining wireless network resources of the terrestrial network meet the service carrying demand of the user terminal in Step 2 includes: Step 2-1, according to the service bearer requirement RB of the user terminal gro-UT , estimate the utilization rate UT of the radio network resources of the ground network gro-wir-rt ; Step 2-2, determine whether the remaining wireless network resources of the terrestrial network meet the service carrying demand of the user terminal according to the following conditions: UT gro-wir-r ≤UT wir-max Among them, UT wir-max is the limit value of the utilization rate of wireless network resources allowed for the entire network system.

7. The method for controlling access to space-ground integrated network services according to claim 6, wherein The wireless network resource utilization rate UT of the estimated terrestrial network described in Step 2-1 gro-wir-rt , which is specifically as follows:

8. The method for controlling access to space-ground integrated network services according to claim 7, wherein The calculation method of the backoff time in Step 3 is as follows: T back = RAND() * T Fram * UT gro-w i r-r * N Among them, RAND() is a random number generation function used to generate a random number between 0 and 1; T Fram is the frame length of a 5G network radio frame; N is the number of backoffs.

9. The method for controlling access to space-ground integrated network services according to claim 8, wherein The calculation of the wireless network resource utilization rate of the non-terrestrial network in Step 4 includes: Suppose the non-terrestrial network base station BS within a unit time sky , the number of used radio resources is RB sky-u , then the radio network resource utilization rate UT of the non-terrestrial network base station BS sky is calculated as follows: sky-wir The calculation method is as follows: Among them, RB sky-t is the non-terrestrial network base station BS sky with the total number of wireless network resources.

10. The method for controlling access to space-ground integrated network services according to claim 9, characterized in that The allocation of wireless network resources to the user terminal according to the preset conditions in Step 5 specifically includes: Step 5-1, if the condition is met: UT wir-m -UT sky-wir >0 Then execute Step 5-2, allow the user terminal to access the non-terrestrial network, and allocate wireless network resources to it; otherwise, reject the user terminal from accessing the non-terrestrial network; Step 5-2, the non-terrestrial network allocates wireless network resources to the user terminal, specifically as follows: If the condition is met: (UT wir-m -UT sky-wir )*RB sky-tol ≥RB gro-UT Then the non-terrestrial network base station BS sky allocates RBs for user terminals gro- wireless network resources. Otherwise, perform step 5-3; Step 5-3, the terrestrial network and the non-terrestrial network jointly allocate wireless network resources to the user terminal, specifically as follows: If the condition is met: Then the terrestrial network base station BS gro allocates wireless network resources to the user terminal, and the non-terrestrial network base station BS sky allocates wireless network resources to the user terminal; Otherwise, the terrestrial network base station BS gro allocates wireless network resources to the user terminal, and the non-terrestrial network base station BS sky allocates wireless network resources to the user terminal.

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