CN109743164B - Channel resource allocation method and device in quantum satellite network - Google Patents
Channel resource allocation method and device in quantum satellite network Download PDFInfo
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Abstract
The invention discloses a channel resource allocation method and a device in a quantum satellite network, wherein the method comprises the following steps: allocating time slots for quantum key transmission to links among satellite nodes in a quantum satellite network; when a quantum satellite network receives a data service, acquiring a transmission path of the data service; the transmission path comprises a transmission sequence among the satellite nodes; sequentially transmitting the data services to corresponding satellite nodes according to the transmission sequence; when the data service is transmitted to one satellite node, acquiring a link between the satellite node and the next satellite node as a transmission link; acquiring a quantum key from a quantum key pool corresponding to the transmission link so as to encrypt the data service; and the data service transmission in the transmission link allocates time slots, so that the data service transmission of each link has enough key amount, and the transmission of the security service is ensured.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for allocating channel resources in a quantum satellite network.
Background
With the development of satellite communication, a satellite network will become a backbone network of a future air-space integrated communication network, but due to the divergence characteristic of laser, light beams are easy to split and eavesdrop, and the problem of safe transmission of inter-satellite laser communication needs to be solved urgently. The Quantum Key Distribution (QKD) technology has the advantage of absolute safety theoretically, based on the 'ink number' Quantum satellite which realizes the Distribution of the inter-satellite Quantum Key, the networking of the Quantum satellite can be realized in the future, and the satellite communication safety is guaranteed by the Distribution of the inter-satellite Quantum Key.
However, the satellite network has a permanently connected link and a dynamically connected link, the key generation rate of the permanently connected link is stable, the key generation rate of the dynamic link is reduced due to the influence of transmission distance change and link switching, and the amount of keys generated by the dynamic link is smaller than that of the permanently connected link in a time period. If the quantum channels of all links adopt the same fixed bandwidth allocation, the key generation rates of different links are inconsistent, the available key amount of the dynamic link is small, and the service needing to be transmitted on the dynamic link cannot obtain enough key amount, so that the transmission capacity of the security service is limited.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method and an apparatus for allocating channel resources in a quantum satellite network, which can enable transmission of data services of each link to have a sufficient key amount and ensure transmission of security services.
The invention provides a channel resource allocation method in a quantum satellite network based on the above purpose, which comprises the following steps:
allocating time slots for quantum key transmission to links among satellite nodes in a quantum satellite network;
when a quantum satellite network receives a data service, acquiring a transmission path of the data service; the transmission path comprises a transmission sequence among the satellite nodes;
sequentially transmitting the data services to corresponding satellite nodes according to the transmission sequence;
when the data service is transmitted to one satellite node, acquiring a link between the satellite node and the next satellite node as a transmission link;
acquiring a quantum key from a quantum key pool corresponding to the transmission link so as to encrypt the data service;
time slots are allocated to data traffic transmission in the transmission link.
Further, the acquiring a transmission path of the data service when the quantum satellite network receives the data service specifically includes:
acquiring the dynamic topology of the quantum satellite network in a motion period;
dividing the motion cycle into a plurality of time segments to segment the dynamic topology into a static topology corresponding to each time segment;
and when the quantum satellite network receives the data service, calculating the shortest transmission path of the data service according to the static topology corresponding to the received time period.
Further, when the data service is transmitted to a satellite node, acquiring a link between the satellite node and a next satellite node as a transmission link specifically includes:
judging whether the current time period is changed or not when the data service is transmitted to a satellite node;
if so, recalculating the shortest transmission path of the data service according to the static topology corresponding to the current time period, and acquiring a link between the satellite node and the next satellite node as a transmission link according to the recalculated transmission path.
Further, before the allocating time slot for quantum key transmission to the link between the satellite nodes in the quantum satellite network, the method further includes:
deploying satellite nodes to form the quantum satellite network;
and deploying quantum key pools for links between any two adjacent satellite nodes in the quantum satellite network, and storing the quantum keys generated by each link in the corresponding quantum key pools.
Further, the allocating a quantum key transmission time slot to a link between satellite nodes in a quantum satellite network specifically includes:
allocating bandwidth to the quantum channels in each link according to the type of each link; the type of the link comprises a permanent link or a dynamic link;
and selecting the time slot for quantum key transmission according to the bandwidth allocated to the quantum channel in the link.
Further, the allocating bandwidth to the quantum channel in each transmission link according to the type of each transmission link specifically includes:
respectively acquiring the key generation amount of the permanent link and the dynamic link in a motion period;
and respectively allocating bandwidth to the quantum channels in the permanent link and the dynamic link according to the key generation amount.
Further, the allocating bandwidths to the quantum channels in the permanent link and the dynamic link according to the key generation amount includes:
calculating the ratio of the key generation quantity of the permanent link to the key generation quantity of the dynamic link to be M/N;
respectively allocating bandwidths to the quantum channels in the permanent link and the dynamic link, so that the ratio of the bandwidth of the quantum channel in the dynamic link to the bandwidth of the quantum channel in the permanent link is M/N.
Further, the selecting a time slot for quantum key transmission according to the bandwidth allocated to the quantum channel in the link specifically includes:
if the link is a permanent link, selecting a fixed time slot of the permanent link as a time slot for quantum key transmission according to the bandwidth allocated to a quantum channel in the permanent link;
and if the link is a dynamic link, selecting the time slot for quantum key transmission from the available time slots of the dynamic link in a first hit mode according to the bandwidth allocated to the quantum channel in the dynamic link.
Further, the allocating a timeslot to data service transmission in the transmission link specifically includes:
and selecting the time slot for data service transmission from the available time slots of the transmission link in a hit mode for the first time according to the bandwidth required by the data service.
The invention also provides a device for allocating channel resources in the quantum satellite network, which can realize the method for allocating channel resources in the quantum satellite network, and the device comprises:
the first time slot distribution module is used for distributing time slots for quantum key transmission to links among satellite nodes in a quantum satellite network;
the transmission path acquisition module is used for acquiring a transmission path of the data service when the quantum satellite network receives the data service; the transmission path comprises a transmission sequence among the satellite nodes;
the transmission module is used for sequentially transmitting the data services to corresponding satellite nodes according to the transmission sequence;
the transmission link acquisition module is used for acquiring a link between the satellite node and the next satellite node as a transmission link when the data service is transmitted to one satellite node;
the encryption module is used for acquiring a quantum key from a quantum key pool corresponding to the transmission link so as to encrypt the data service;
and the second time slot allocation module is used for allocating time slots for data service transmission in the transmission link.
From the above, it can be seen that the method and apparatus for allocating channel resources in a quantum satellite network provided by the present invention can allocate a quantum key transmission timeslot to a link between satellite nodes in the quantum satellite network in advance, and when the quantum satellite network receives a data service, obtain a transmission link of the data service, so that when the data service is transmitted to the transmission link, obtain a quantum key from a quantum key pool corresponding to the transmission link, encrypt the data service, and allocate the timeslot to quantum key transmission in the transmission link, so that the transmission of the data service of the transmission link has a sufficient key amount, and the transmission of a secure service is ensured.
Drawings
Fig. 1 is a schematic flowchart of a channel resource allocation method in a quantum satellite network according to an embodiment of the present invention;
fig. 2 is a quantum satellite network distribution diagram in a channel resource allocation method in a quantum satellite network according to an embodiment of the present invention;
fig. 3 is a link channel distribution diagram in a channel resource allocation method in a quantum satellite network according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a channel resource allocation apparatus in a quantum satellite network according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
Referring to fig. 1, it is a schematic flow chart of a method for allocating channel resources in a quantum satellite network according to an embodiment of the present invention, where the method includes:
and S1, allocating time slots for quantum key transmission to links among the satellite nodes in the quantum satellite network.
Specifically, step S1 includes:
allocating bandwidth to the quantum channels in each link according to the type of each link; the type of the link comprises a permanent link or a dynamic link;
and selecting the time slot for quantum key transmission according to the bandwidth allocated to the quantum channel in the link.
In this embodiment, in the quantum satellite network, a time division multiplexing mode may be adopted to allocate a certain time slot, that is, bandwidth, to a quantum channel, so that quantum key distribution may be performed while data service is transmitted. In the embodiment, the mixing transmission of the quantum channel and the data channel is based on a time division multiplexing manner, the whole channel is divided into a plurality of time slices, that is, time slots, and the time slots are allocated to each path of signal for use, and the bandwidth of the signal is the number of occupied time slots. And a certain time slot is allocated to the quantum channel, and the quantum key distribution can be continuously carried out while the data service is transmitted.
Further, the allocating bandwidth to the quantum channel in each link according to the type of each link specifically includes:
respectively acquiring the key generation amount of the permanent link and the dynamic link in a motion period;
and respectively allocating bandwidth to the quantum channels in the permanent link and the dynamic link according to the key generation amount.
Further, the allocating bandwidths to the quantum channels in the permanent link and the dynamic link according to the key generation amount includes:
calculating the ratio of the key generation quantity of the permanent link to the key generation quantity of the dynamic link to be M/N;
respectively allocating bandwidths to the quantum channels in the permanent link and the dynamic link, so that the ratio of the bandwidth of the quantum channel in the dynamic link to the bandwidth of the quantum channel in the permanent link is M/N.
It should be noted that, according to the change rule of the satellite topology in a motion cycle, the key generation rate of the links between the satellite nodes is estimated, and the key generation amount of each link in a motion cycle time is obtained as the key generation rate. The permanent link is stable, the key generation amount can be obtained by multiplying the fixed key generation rate per unit time by a cycle time, and the key generation amount can be obtained by multiplying the average key generation rate within the duration time by the dynamic link.
And according to the obtained key generation amount of each link, increasing the bandwidth of the dynamic link quantum channel by a corresponding proportion so as to improve the key generation rate. Setting the generation quantity of the permanent link key as M and the generation quantity of the dynamic link key as N in a time period, and setting the bandwidth of the quantum channel of the dynamic link as M/N times of that of the continuous link so as to set the bandwidth of the quantum channel for each link.
Further, the selecting a time slot for quantum key transmission according to the bandwidth allocated to the quantum channel in the link specifically includes:
if the link is a permanent link, selecting a fixed time slot of the permanent link as a time slot for quantum key transmission according to the bandwidth allocated to a quantum channel in the permanent link;
and if the link is a dynamic link, selecting the time slot for quantum key transmission from the available time slots of the dynamic link in a first hit mode according to the bandwidth allocated to the quantum channel in the dynamic link.
It should be noted that, when quantum key time slot allocation is performed, time slots are selected for quantum channels in available time slots according to bandwidths allocated for the quantum channels, a method for selecting time slots may adopt fixed time slots or dynamic time slots, and the fixed allocation time slots are several time slots allocated for the quantum channels; the time slots are dynamically allocated, i.e. the available time slots are selected for quantum transmission with the first hit.
S2, when the quantum satellite network receives the data service, acquiring a transmission path of the data service; the transmission path includes a transmission order between the satellite nodes.
Specifically, step S2 includes:
acquiring the dynamic topology of the quantum satellite network in a motion period;
dividing the motion cycle into a plurality of time segments to segment the dynamic topology into a static topology corresponding to each time segment;
and when the quantum satellite network receives the data service, calculating the shortest transmission path of the data service according to the static topology corresponding to the received time period.
In this embodiment, the satellites in the quantum satellite network have periodicity and predictability, so that the change rule of the links between the satellites can be predicted. After the dynamic topology of the satellite in a motion period is obtained, a time slicing method is adopted to divide the motion period of the satellite into a plurality of time periods, so that the dynamic topology is divided into discrete static topologies. And when the data service arrives, acquiring the corresponding static topology according to the time period, and further calculating the shortest transmission path of the data service according to the link weight matrix. Wherein the transmission path comprises a transmission sequence from the source satellite node to the destination satellite node.
And S3, sequentially transmitting the data services to the corresponding satellite nodes according to the transmission sequence.
In this embodiment, a first k shortest path algorithm is adopted to obtain a plurality of candidate paths, and then the shortest transmission path satisfying the resource requirement is screened out, so as to transmit the data service according to the shortest transmission path. Since the topology of the satellite network may change in different time periods, it may be necessary to switch transmission paths during the transmission of data traffic.
And S4, acquiring a link between the satellite node and the next satellite node as a transmission link when the data service is transmitted to one satellite node.
Specifically, step S4 includes:
judging whether the current time period is changed or not when the data service is transmitted to a satellite node;
if so, recalculating the shortest transmission path of the data service according to the static topology corresponding to the current time period, and acquiring a link between the satellite node and the next satellite node as a transmission link according to the recalculated transmission path.
In this embodiment, at a time point when the satellite network topology changes, since the link between the satellites is switched, the data service may need to switch the transmission path, and therefore it is necessary to determine whether the satellite network topology changes when the data service is transmitted to each satellite node. If the satellite node is changed, caching data at the satellite node, recalculating a transmission path for switching, and acquiring a next satellite node on the switched transmission path for transmission until the next satellite node is transmitted to a target satellite node; and if the satellite node is not changed, acquiring the next satellite node according to the original transmission path for transmission until the next satellite node is transmitted to the target satellite node.
And S5, obtaining a quantum key from a quantum key pool corresponding to the transmission link so as to encrypt the data service.
Further, before the allocating time slot for quantum key transmission to the link between the satellite nodes in the quantum satellite network, the method further includes:
deploying satellite nodes to form the quantum satellite network;
and deploying quantum key pools for links between any two adjacent satellite nodes in the quantum satellite network, and storing the quantum keys generated by each link in the corresponding quantum key pools.
It should be noted that, a quantum satellite network is deployed first, that is, quantum satellite nodes are deployed, each satellite node is used as a quantum transceiving node and a data forwarding node, and a time division multiplexing mode is adopted to enable a quantum channel and a data channel to be transmitted in the same laser link.
In quantum networking based on terrestrial fiber optic networks, point-to-point communication can provide unconditional security through quantum keys, however for long-distance quantum key distribution, quantum relay is required to account for the loss of quantum transmission. And free space quantum transmission gets rid of the distance limit of quantum communication based on optical fiber, and can realize long-distance quantum key distribution. By quantum key distribution between the satellite and the ground, the communication safety of the satellite network can be guaranteed, and the quantum satellite network covering the whole area is established. However, the generation rate of the quantum key is mainly affected by link transmission distance, link duration, satellite position and the like, and the key generation rate is low due to the fact that the inter-satellite distance is long, and the real-time requirements of security services are difficult to meet. Therefore, the generated quantum keys can be stored at each pair of satellite nodes, namely each link, constructs a quantum key pool, and the quantum keys are continuously distributed among the nodes and stored in the quantum key pool so as to ensure that the security service has enough key amount.
In the data service transmission process, according to the bandwidth and the key amount required by the data service, signaling is sent along a transmission path, bandwidth reservation is carried out when the signaling is transmitted to a satellite node, and a corresponding quantum key is taken out from a quantum key pool to be used as an encryption service.
And S6, allocating time slots for data service transmission in the transmission link.
Specifically, step S6 includes:
and selecting the time slot for data service transmission from the available time slots of the transmission link in a hit mode for the first time according to the bandwidth required by the data service.
It should be noted that, when the data service time slots are allocated, a plurality of time slots for service transmission are selected by first hit from the available time slots of the data service according to the bandwidth required by the data service.
And when the data service is transmitted to the target satellite node, completing the transmission of the data service, and removing the reserved and occupied bandwidth resources.
As shown in fig. 2, by dividing a time period of a satellite into several regions, a series of discrete static topologies can be obtained, wherein one topology is taken as an example, and the topology includes two orbits. Each satellite node is provided with quantum transceiver equipment and laser transceiver equipment, quantum key distribution and data transmission are simultaneously carried out by utilizing time division multiplexing, and each pair of nodes construct a quantum key pool and store the quantum key of a link between two points. And estimating the key rate of each link according to the periodic change rule of the dynamic link, and allocating the bandwidth of the quantum channel to balance the key generation amount of different links. Fig. 3 shows different bandwidth allocations of quantum channels of the permanent link and the dynamic link, wherein the whole channel is divided into a plurality of time slots based on time division multiplexing, and the number of the time slots is used as the bandwidth.
For example, in fig. 2, data traffic is transmitted from node 1 to node 4, the data traffic is transmitted over a permanent link and a dynamic link, wherein the solid lines between the nodes represent the permanent link and the dashed lines between the nodes represent the dynamic link. A portion of the bandwidth is used for quantum key transmission and the remainder is used for data traffic transmission. The time slot allocation process of the data service and the quantum channel comprises the following steps: (1) allocating time slots for the quantum channels of each link; (2) establishing a data service request from the node 1 to the node 4, and acquiring the current topology according to time; (3) calculating a route, wherein a transmission path is a node 1-a node 2-a node 4; (4) judging whether the routing switching is needed or not through each node; (5) resources are distributed for the service, link bandwidths are reserved at the nodes 1, 2 and 4, and quantum keys provided for the service are taken out; (6) searching available time slots of the link and selecting the time slots of the data service; (7) and completing data service transmission.
The channel resource allocation method in the quantum satellite network can allocate time slots for quantum keys in a time division multiplexing mode, realize data transmission and key distribution in the same link, and simultaneously store the quantum keys generated continuously at the satellite nodes so as to ensure that services have enough keys; the quantum key generation rate of the dynamic link is improved by improving the bandwidth of the quantum channel of the dynamic link, increasing the number of time slots used for quantum transmission of the dynamic link and improving the quantum key generation rate of the dynamic link, so that the key generation rates of the dynamic link and the permanent link are consistent, and the key generation amount of each link is balanced; the problem of insufficient dynamic link key amount is solved, the limitation on the service capacity transmitted on the dynamic link is avoided, and the capability of the satellite network for transmitting the quantum encryption service is improved.
Correspondingly, the invention also provides a device for allocating channel resources in the quantum satellite network, which can realize all the processes of the method for allocating channel resources in the quantum satellite network.
Referring to fig. 4, a schematic structural diagram of a channel resource allocation apparatus in a quantum satellite network provided in an embodiment of the present invention is shown, where the apparatus includes:
the system comprises a first time slot distribution module 1, a second time slot distribution module and a quantum key transmission module, wherein the first time slot distribution module is used for distributing time slots for quantum key transmission to links among satellite nodes in a quantum satellite network;
the transmission path acquisition module 2 is used for acquiring a transmission path of the data service when the quantum satellite network receives the data service; the transmission path comprises a transmission sequence among the satellite nodes;
the transmission module 3 is used for sequentially transmitting the data services to corresponding satellite nodes according to the transmission sequence;
a transmission link acquisition module 4, configured to acquire a link between a satellite node and a next satellite node as a transmission link each time the data service is transmitted to the one satellite node;
the encryption module 5 is configured to obtain a quantum key from a quantum key pool corresponding to the transmission link, so as to encrypt the data service;
and a second time slot allocating module 6, configured to allocate time slots for data service transmission in the transmission link.
The channel resource allocation device in the quantum satellite network can allocate time slots for quantum keys in a time division multiplexing mode, realize data transmission and key distribution in the same link, and simultaneously store the quantum keys generated continuously at the satellite nodes so as to ensure that services have enough keys; the quantum key generation rate of the dynamic link is improved by improving the bandwidth of the quantum channel of the dynamic link, increasing the number of time slots used for quantum transmission of the dynamic link and improving the quantum key generation rate of the dynamic link, so that the key generation rates of the dynamic link and the permanent link are consistent, and the key generation amount of each link is balanced; the problem of insufficient dynamic link key amount is solved, the limitation on the service capacity transmitted on the dynamic link is avoided, and the capability of the satellite network for transmitting the quantum encryption service is improved.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
In addition, well known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures for simplicity of illustration and discussion, and so as not to obscure the invention. Furthermore, devices may be shown in block diagram form in order to avoid obscuring the invention, and also in view of the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform within which the present invention is to be implemented (i.e., specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the invention, it should be apparent to one skilled in the art that the invention can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative instead of restrictive.
While the present invention has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic ram (dram)) may use the discussed embodiments.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (9)
1. A method for allocating channel resources in a quantum satellite network is characterized by comprising the following steps:
allocating time slots for quantum key transmission to links among satellite nodes in a quantum satellite network; the time slot of the quantum key transmission is allocated based on the key generation amount of the link in one motion period;
when a quantum satellite network receives a data service, acquiring a transmission path of the data service; the transmission path comprises a transmission sequence among the satellite nodes;
sequentially transmitting the data services to corresponding satellite nodes according to the transmission sequence;
when the data service is transmitted to one satellite node, acquiring a link between the satellite node and the next satellite node as a transmission link;
acquiring a quantum key from a quantum key pool corresponding to the transmission link so as to encrypt the data service;
allocating time slots to data traffic transmissions in the transmission link;
the allocating time slots to the data service transmission in the transmission link specifically includes:
and selecting the time slot for data service transmission from the available time slots of the transmission link by adopting a first hit algorithm according to the bandwidth required by the data service.
2. The method according to claim 1, wherein the acquiring a transmission path of the data service when the quantum satellite network receives the data service specifically includes:
acquiring the dynamic topology of the quantum satellite network in a motion period;
dividing the motion cycle into a plurality of time segments to segment the dynamic topology into a static topology corresponding to each time segment;
and when the quantum satellite network receives the data service, calculating the shortest transmission path of the data service according to the static topology corresponding to the received time period.
3. The method according to claim 2, wherein the acquiring a link between a satellite node and a next satellite node as a transmission link each time the data service is transmitted to the one satellite node specifically comprises:
judging whether the current time period is changed or not when the data service is transmitted to a satellite node;
if so, recalculating the shortest transmission path of the data service according to the static topology corresponding to the current time period, and acquiring a link between the satellite node and the next satellite node as a transmission link according to the recalculated transmission path.
4. The method of claim 1, wherein before allocating the time slot for quantum key transmission to the link between the satellite nodes in the quantum satellite network, the method further comprises:
deploying satellite nodes to form the quantum satellite network;
and deploying quantum key pools for links between any two adjacent satellite nodes in the quantum satellite network, and storing the quantum keys generated by each link in the corresponding quantum key pools.
5. The method according to claim 1, wherein the allocating time slots for quantum key transmission to links between satellite nodes in the quantum satellite network specifically comprises:
allocating bandwidth to the quantum channels in each link according to the type of each link; the type of the link comprises a permanent link or a dynamic link;
and selecting the time slot for quantum key transmission according to the bandwidth allocated to the quantum channel in the link.
6. The method for allocating channel resources in a quantum satellite network according to claim 5, wherein the allocating bandwidth to the quantum channel in each transmission link according to the type of each transmission link specifically comprises:
respectively acquiring the key generation amount of the permanent link and the dynamic link in a motion period;
and respectively allocating bandwidth to the quantum channels in the permanent link and the dynamic link according to the key generation amount.
7. The method according to claim 6, wherein the allocating bandwidths to the quantum channels in the persistent link and the dynamic link according to the key generation amount respectively comprises:
calculating the ratio of the key generation quantity of the permanent link to the key generation quantity of the dynamic link to be M/N;
respectively allocating bandwidths to the quantum channels in the permanent link and the dynamic link, so that the ratio of the bandwidth of the quantum channel in the dynamic link to the bandwidth of the quantum channel in the permanent link is M/N.
8. The method according to claim 5, wherein the selecting the time slot for quantum key transmission according to the bandwidth allocated to the quantum channel in the link specifically comprises:
if the link is a permanent link, selecting a fixed time slot of the permanent link as a time slot for quantum key transmission according to the bandwidth allocated to a quantum channel in the permanent link;
and if the link is a dynamic link, selecting a time slot for quantum key transmission from the available time slots of the dynamic link by adopting a first hit algorithm according to the bandwidth allocated to the quantum channel in the dynamic link.
9. A device for allocating channel resources in a quantum satellite network, capable of implementing the method for allocating channel resources in a quantum satellite network according to any one of claims 1 to 8, the device comprising:
the first time slot distribution module is used for distributing time slots for quantum key transmission to links among satellite nodes in a quantum satellite network;
the transmission path acquisition module is used for acquiring a transmission path of the data service when the quantum satellite network receives the data service; the transmission path comprises a transmission sequence among the satellite nodes;
the transmission module is used for sequentially transmitting the data services to corresponding satellite nodes according to the transmission sequence;
the transmission link acquisition module is used for acquiring a link between the satellite node and the next satellite node as a transmission link when the data service is transmitted to one satellite node;
the encryption module is used for acquiring a quantum key from a quantum key pool corresponding to the transmission link so as to encrypt the data service;
and the second time slot allocation module is used for allocating time slots for data service transmission in the transmission link.
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| CN111181717B (en) * | 2019-11-11 | 2021-06-15 | 北京邮电大学 | Key distribution method and device |
| CN111475301B (en) * | 2020-04-09 | 2021-06-11 | 清华大学 | Satellite resource allocation method and device and electronic equipment |
| CN111483615B (en) * | 2020-04-17 | 2021-06-29 | 中国科学院微小卫星创新研究院 | Method for realizing pointing posture of quantum satellite to ground optical station |
| CN112118039B (en) * | 2020-07-28 | 2022-05-31 | 北京邮电大学 | Service transmission method and device of satellite network, electronic equipment and storage medium |
| CN113179154B (en) * | 2021-03-25 | 2022-07-01 | 北京邮电大学 | Resource joint distribution method in quantum key distribution Internet of things and related equipment |
| CN116743380B (en) * | 2023-08-14 | 2023-10-31 | 中电信量子科技有限公司 | OTN encryption communication method and system based on quantum key distribution |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101354828A (en) * | 2008-09-12 | 2009-01-28 | 航天东方红卫星有限公司 | Method for transporting and managing satellite constellation information |
| US20120230493A1 (en) * | 2011-03-11 | 2012-09-13 | The Aerospace Corporation | Systems, Methods, and Apparatus for a Quantum Key Distribution Telescope |
| CN106487508A (en) * | 2016-10-28 | 2017-03-08 | 北京邮电大学 | A kind of quantum-key distribution and wavelength-division multiplex optical access network fusion method |
| CN107437995A (en) * | 2016-05-27 | 2017-12-05 | 西安电子科技大学 | Satellite-based wide area quantum communication network system and communication means |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103001875B (en) * | 2013-01-07 | 2015-03-11 | 山东量子科学技术研究院有限公司 | Quantum cryptography network dynamic routing method |
| CN106878006B (en) * | 2016-12-31 | 2019-11-05 | 北京邮电大学 | Quantum key channel transmission method and system based on Optical Time Division Multiplexing |
| CN106953729B (en) * | 2017-04-14 | 2023-06-13 | 江苏亨通问天量子信息研究院有限公司 | Satellite communication encryption system and method based on quantum key |
-
2019
- 2019-01-24 CN CN201910067049.1A patent/CN109743164B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101354828A (en) * | 2008-09-12 | 2009-01-28 | 航天东方红卫星有限公司 | Method for transporting and managing satellite constellation information |
| US20120230493A1 (en) * | 2011-03-11 | 2012-09-13 | The Aerospace Corporation | Systems, Methods, and Apparatus for a Quantum Key Distribution Telescope |
| CN107437995A (en) * | 2016-05-27 | 2017-12-05 | 西安电子科技大学 | Satellite-based wide area quantum communication network system and communication means |
| CN106487508A (en) * | 2016-10-28 | 2017-03-08 | 北京邮电大学 | A kind of quantum-key distribution and wavelength-division multiplex optical access network fusion method |
Non-Patent Citations (1)
| Title |
|---|
| 量子密钥分发网络路由与资源分配研究;王聪;《中国优秀硕士学位论文全文数据库 信息科技辑》;20181115(第11期);I136-66 * |
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