CN101795493B - Satellite onboard processing exchange system suitable for GEO satellite mobile communication system - Google Patents
Satellite onboard processing exchange system suitable for GEO satellite mobile communication system Download PDFInfo
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Abstract
The invention relates to a satellite onboard processing exchange system suitable for a GEO satellite mobile communication system, which belongs to the technical field of satellite mobile communications. The invention is characterized by comprising a wave beam receiving unit, a feeding chain circuit transmitting unit, a received signal exchange unit, a fixed configuration signal receiving processing unit, a global signal receiving processing unit, a business processing unit, a fixed configuration signal transmitting processing unit, a global signal transmitting processing unit, a transmitted signal processing unit, a feeding chain circuit receiving unit, a satellite onboard control unit, a signal superimposer and a wave beam transmitting unit. The invention enables both sides in the network to complete processing on the satellite, thereby realizing one-hop communications; the internetwork business is transparently transmitted to a ground gateway for direct processing; and optimizing configuration of the resources processed on the satellite is carried out through dynamic configuration by utilizing an extensible nonsymmetrical satellite onboard exchange structure.
Description
Technical field
Invention belongs to technical field of satellite communication, particularly processing and exchanging system on the star in the satellite mobile communication system.
Background technology
Satellite mobile communication can realize that the whole world truly covers, and is the important component part of 3-G (Generation Three mobile communication system).Especially lost efficacy in particular cases in the ground communication means, satellite mobile communication becomes unique selection, and this point shows particularly outstanding in Wenchuan earthquake relief work in 2008.In occasions such as Olympic communications assurance, 60 tercentenaries of founding the state, satellite mobile communication has all been brought into play irreplaceable important function.
Along with the development of ground network, 3G, 4G technology will become the major technique means of ground communication network.For with the seamless fusion of ground network, 3G, the 4G technology is applied to satellite mobile communication becomes inevitable development trend gradually.Meanwhile; GEO (geostationary orbit) satellite communication time-delay long (single-hop transmission time-delay ≈ 0.25 second); If the double jump application model that adopts transparent forwarding on traditional star, ground central station to handle will cause 0.5 second one-way transmission time-delay, can't satisfy mobile subscriber's demand.Thereby make the GEO satellite mobile communication system must adopt based on the single-hop communication pattern of handling on the star.Yet the resource strictness is limited on the star, and the processing complexity of 3G, 4G communication system is higher, and present satellite payload is not enough to accomplish all signal complete solutions and transfers.On the other hand, communication and two types of business of internetwork communication in existence is netted in the GEO satellite mobile communication system, business only accounts for about 10% of TOCOM total communication business in the net according to statistics, business just need demodulation in real time on star in the net and have only.To these characteristics, can adopt that the processing and exchanging new technology solves the contradiction between performance requirement and the disposal ability on the star that is suitable for satellite mobile communication.
The objective of the invention is to propose on a kind of star on resource dynamic configuration, the star transparent forwarding and the processing and exchanging system of compatibility mutually.The present invention has realized on the star compatibility of processing and exchanging two kinds of patterns on the transparent forwarding and star; Designed a kind of extendible switching fabric of layering of special use; Adopt the dynamic-configuration scheme, improved the utilance of handling resource on the star.
Summary of the invention
The objective of the invention is to, propose on the configuration of resource dynamic on a kind of star, the star transparent forwarding and the processing and exchanging technical scheme of compatibility mutually.Core concept of the present invention is to realize processing and exchanging collaborative work on the transparent forwarding and star on the star, and professional in the net processing and exchanging is to realize that one jumps communication in real time on star, and the network utility transparent forwarding is accomplished to gateway station and handled, and still has only one to jump and delay time.Switching fabric on the extendible star of the layering of design special of the present invention is optimized configuration through dynamic-configuration to handling resource on the star.
The invention is characterized in; Contain: wave beam receiving element, feeding link transmitter unit, collection of letters crosspoint, fixed configurations signal processing unit, overall signal receive control unit, signal superimposer and beam transmission unit on processing unit, operation exchange unit, fixed configurations signal emission processing unit, overall signal's emission processing unit, signalling crosspoint, feeding link receiving element, the star; All constitute by digital integrated circuit chip, wherein:
The wave beam receiving element is provided with: Y input, constitute Y wave beam passage, and each wave beam contains the multichannel user data, whole sampled data Y of Y wave beam of input
DComprise in the net and internet two kinds of sampled datas, be provided with again: three road outputs: first via output, total Y, output is at said Y
DAfter the judgement of built-in judging module, do not need each circuit-switched data Y of on star, handling in the individual wave beam sampled data
D1, the second road output has Y, and output is at said Y
DIn the individual wave beam sampled data after the judgement of said judging module the multichannel data Y in said fixed configurations signal processing unit process range
D2, the Third Road output has Y, and output is at said Y
DAll the other need be the multichannel data Y that handles on the star outside said fixed configurations signal processing unit disposal ability scope after said judging module judgement in the individual wave beam sampled data
D3, said Y
D=Y
D1+ Y
D2+ Y
D3The feeding link transmitter unit has Y data input, links to each other with each output of the first via of said wave beam receiving element, also is provided with: star earth mat management and control system signaling input so that according to the control signal of star earth mat management and control system unit with multichannel data Y
D1Be forwarded to ground station;
The fixed configurations signal processing unit; Total YP; Y is the wave beam sum, and P is the fixed configurations signal processing unit number of each beam configuration, imports the second circuit-switched data Y that supplies processing in the net in the own disposal ability scope from the second road output of said wave beam receiving element
D2, output YP roadbed band data;
Collection of letters crosspoint; At least one is provided with Y input, links to each other with each output of Third Road output in the said wave beam receiving element respectively; Said collection of letters crosspoint adopts can expand the layering switching fabric; Contain: one-level module and secondary module be totally two generic modules, realize with digital integrated circuit chip, wherein:
The one-level module contains N sub-one-level module, and each sub-one-level module is formed by connecting first order MUX and N second level MUX, wherein,
M is the number that said overall signal receives processing unit, establishes Y
D3Be at said Y
DUser's number in YP extraneous user's multichannel data of fixed configurations signal processing unit disposal ability described in the sampled data of road; Be numerically equal to the number of said user's multichannel data; In said Y wave beam passage, transmit; The pairing numbers of beams I=of sampled data [Y/N] of a plurality of wave beams of n said sub-one-level module correspondence, in n said sub-one-level module:
First order MUX has only one, and I input arranged, and imports following data: Input respectively
N * 1..., Input
N * 1..., Input
N * 1, wherein, subscript n is represented the sequence number of said first order MUX, n=1,2 ..., sampled data sequence number in N, subscript i i the wave beam input representing to be comprised in n the said one-level submodule, total N is individual, the output sum has N
2It is individual,
N second level MUX, each second level MUX have N N output corresponding to said first order MUX, and N destination address output arranged, and said N second level MUX amounts to total N
2Individual destination address output is used Road
1, Road
2...,
Expression,
The secondary module; Constitute by N sub-secondary module; Each sub-secondary module is a MUX, in each input of each MUX and the said one-level module in the sub-one-level module of corresponding sequence number each output of N second level MUX link to each other, amount to N
2Individual, whole secondary module is imported N * N altogether
2Individual destination address, each is as the said MUX n output N of said sub-secondary module
2Individual destination address is expressed as: Output
1 * 1, Output
1 * 2..., Output
1 * n...,
Said collection of letters crosspoint is accomplished the scheduling of input data according to the following steps, with the exchange between completion input data and the dateout,
Step (1). said n sub-one-level module input is total to the user data number in the sampled data in the wave beam of I road,
Step (2). differentiate whether there is X
1≤Y
1, wherein:
X
1Be the interior user data number of common I road wave beam that is input to said n sub-one-level module in the said one-level module,
Y
1Being that said secondary module is interior equals the destination address number in number corresponding to vacant output port number in the said sub-secondary module of said n sub-one-level module,
If: X
1≤Y
1, said first order MUX is directly exported the user data number X in the sampled data in the said I road wave beam altogether in then said n the sub-one-level module
1, said each user data all includes destination address interior, directly through said sub-secondary module output corresponding to the corresponding sequence number of second level MUX in n said n sub-one-level module of said sub-secondary module sequence number,
If: X
1＞Y
1,
Then: the first order MUX in the said one-level module duplicates the said user data number input forwarding of k corresponding second level MUX in proper order in the MUX of the individual said second level of N in said one-level module that is total in the wave beam of I road of k part; Wherein:
1≤k≤N; This conditional inquality begins to calculate from first module; Add up downwards at this inequality condition unmet front sequence; Until obtaining the k value
Step (3). said n sub-secondary module receive said n sub-one-level module output that step (2) sends corresponding to said Input
N * 1..., Input
N * 1..., Input
N * 1The N of sampled data address signal Road
1, Road
2...,
After, directly pass through N correspondingly
2Individual output port address is exported Output
1 * 1, Output
1 * 2..., Output
1 * n...,,
Individual sampled data, whole secondary module input signal are N Road
1To
Individual sampled data, total output then has N
2Individual sampled data Output
1 * 1, Output
1 * 2..., Output
1 * n...,
Overall signal receives processing unit, delivers to the operation exchange unit after M the sampled data from said collection of letters crosspoint input is treated to base band data altogether,
The operation exchange unit; Realize with time-shared bus; Deliver to said fixed configurations signal transmitter unit to the base band data of receiving from said fixed configurations signal processing unit, deliver to said overall signal emission processing unit to the data of receiving from said overall signal emission processing unit
Fixed configurations signal emission processing unit to each beam configuration Q, amounts to YQ, delivers to said signal superimposer to the base band data in said fixed configurations signal processing unit disposal ability scope that receives,
Overall signal's emission processing unit, L altogether, deliver to the signalling crosspoint to the base band data of receiving from said operation exchange unit,
The signalling crosspoint is in series by the firsts and seconds module that exchanges of signaling, wherein:
The one-level module of the exchange usefulness of signaling is made up of N sub-one-level module,
N said one-level Switching Module has N
2Individual sampled data is expressed as Input '
N * 1...,
Symbol " ' " shunt that is expressed as the signalling crosspoint sends into a MUX respectively after through an adder again; In the described adder; The output of first adder wherein one the tunnel is delivered to second adder, the output of second adder wherein a road deliver to the 3rd adder; By that analogy, until N
2Individual adder position, and be total to N in n said sub-one-level module
2N+1 first adder in the said sub-one-level module delivered in individual output, said MUX output N
2Individual address signal Road
1, Road
2...,
Directly deliver to each input of the corresponding sub-secondary module of secondary module of signalling crosspoint, accomplish N N
2Be input to N N
2The exchange of output,
The secondary module of signalling crosspoint is made up of N sub-secondary module, and sub-secondary module also is a MUX output I ' road sampled data
1≤K≤N accomplishes N N
2Be input to the exchange of the individual output of I ',
Simultaneously, said signalling crosspoint also is the unsymmetric structure of an input sampling data way greater than output sampled data way;
The feeding link receiving element is directly delivered to said signal superimposer to the jumping sampled data that ground station sends up according to the star ground webmaster signaling that control unit on the said star sends,
The signal superimposer, the sampled data of sending the ground station's sampled data that receives and signalling crosspoint here superposes, and is sent to the beam transmission unit.
Fig. 1 is a system configuration sketch map of the present invention, wherein:
Signalling crosspoint 1 designs realization with collection of letters crosspoint 7 internal structures according to the specific layering switching fabric of expanding, and concrete grammar is following:
1. collection of letters crosspoint structure realizes (Fig. 3): said collection of letters crosspoint structure is asymmetric switching fabric, is input as I road wave beam according to what Fig. 1 can know collection of letters crosspoint, is output as N
3Circuit-switched data.Because the multichannel user data of output is contained in each wave beam inside of input, therefore import number less than the output number.At first, utilize formula
Obtain the parameter N value, thus the parameter of obtaining
Then, utilize parameter N, I project organization following: N altogether of one-level module, each accomplishes I to N
2Exchange; N altogether of secondary module, each accomplishes N
2To N
2Exchange.Wherein, one-level inside modules structure is as shown in Figure 4: the one-level inside modules contains the basic switching building block of N N input N output, and basic module can be realized by MUX, is connected by MUX between the input of one-level module and the input of basic module.The secondary module is by N
2Input N
2The MUX of output is realized.At last; The annexation of input of confirming output and the secondary module of one-level module is: 1 to the N road output of the 1st one-level module is connected respectively to the 1 tunnel input of each secondary module in order, and 1 to the N road output of k one-level module is connected respectively to the k road of each secondary module in order and imports (1≤k≤n); (m-1) N+1 to mN road output of the 1st one-level module is connected respectively to (m-1) N+1 road input of each secondary module in order; The output of (m-1) N+1 to mN road of k one-level module is connected respectively to the input of (m-1) N+k road (1≤k≤N, the 1≤m≤N) of each secondary module in order.
Said collection of letters crosspoint is accomplished the scheduling of input data according to the following steps, with the exchange between completion input data and the dateout,
Step (1). said and n sub-one-level module input is total to the user data number in the sampled data in the wave beam of I road,
Step (2). differentiate whether there is X
1≤Y
1, wherein:
X
1Be the interior user data number of common I road wave beam that is input to said n sub-one-level module in the said one-level module,
Y
1Being that said secondary module is interior equals the destination address number in number corresponding to vacant output port number in the said sub-secondary module of said n sub-one-level module,
If: X
1≤Y
1, said first order MUX is directly exported the user data number X in the sampled data in the said I road wave beam altogether in then said n the sub-one-level module
1, each user data all includes destination address interior, directly through said sub-secondary module output corresponding to the corresponding sequence number of second level MUX in n said n sub-one-level module of said sub-secondary module sequence number,
If: X
1＞Y
1,
Then: the first order MUX in the said one-level module duplicates the said interior user data number of I road wave beam that is total to of k part and holds with the input forwarding of k corresponding second level MUX of order in N in the said one-level module the said second level MUX, wherein:
Y
1, 1≤k≤N, this conditional inquality begins to calculate from first module, adds up downwards at this inequality condition unmet front sequence, until obtaining the k value,
Step (3). said n sub-secondary module receive said n sub-one-level module output that step (2) sends corresponding to said Input
N * 1..., Input
N * 1..., Input
N * 1The N of sampled data address signal Road
1, Road
2....,
After, directly pass through N correspondingly
2Individual output port address is exported Output
1 * 1, Output
1 * 2..., Output
1 * n...,,
Individual sampled data, whole secondary module input signal are N Road
1To
Individual sampled data, total output then has N
2Individual sampled data Output
1 * 1, Output
1 * 2..., Output
1 * n...,
2. signalling crosspoint structure realizes (Fig. 6): the sampled data from L overall signal's emission processing unit that is input as according to Fig. 1 can know the signalling crosspoint is output as K road wave beam.Because the multipath input data of signalling crosspoint adds one road beamformer output, so this switching fabric is the unsymmetric structure of input number greater than the output number.Therefore, signalling crosspoint structure adopts and collection of letters crosspoint inverse structure.Utilize formula
to obtain parameter N, utilize formula
to obtain parameter I.With parameter N, the specific layering switching fabric principle chart of expanding of I substitution.Then: each one-level module is by N N
2Input N
2The module of output is formed, and accomplishes N
2To N
2Exchange; Each secondary module is by N N
2The module of input I output is formed, and accomplishes N
2Exchange to I.Because the signalling crosspoint need merge to multichannel data in one road wave beam, crosspoint secondary module (corresponding to the specific one-level module of the expanding the layering switching fabric) internal structure of therefore signaling changes to shown in Figure 5.All the other structures are constant.
Said signalling crosspoint; Utilize the adder of one-level inside modules; The sampled data that the purpose wave beam is identical be weighted to wherein one the tunnel deliver to the one-level module output, then deliver to the secondary module under the corresponding output by destination address, then deliver to corresponding output end according to destination address.
3. operation exchange unit: business data is exchanged processing entirely, can adopt based on switching fabrics such as time-shared bus, shared storage or Crossbar and realize.Fig. 2 is a kind of instance that adopts the time-shared bus structure.
The processing and exchanging system realizes (Fig. 1) according to the following steps on the star of the GEO of being applicable to satellite mobile communication system of the present invention:
Step (1) wave beam receiving element 9 utilizes its inner decision device not deliver to feeding link transmitter unit 11 with not doing the data of handling on the star in the wave beam sampled data that receives; To deliver to fixed configurations signal processing unit 2 in the data in the fixed configurations signal processing unit disposal ability scope, and all the other need be done the data of handling on the star deliver to collection of letters crosspoint 1;
Step (2) be responsible on the star of control feeding link control unit 13 utilize star ground webmaster signaling control feeding link transmitter unit 11 with the direct transparent forwarding of receiving of wave beam sampled data to ground station;
Step (3) fixed configurations signal processing unit 2 is delivered to operation exchange unit 4 after the sampled data of receiving is treated to base band data;
Step (4) collection of letters crosspoint 1 exchanges to the sampled data that receives and delivers to operation exchange unit 4 after overall signal's reception processing unit 3 is treated to base band data;
Fixed configurations signal emission processing unit 5 is delivered to the base band data in wave beam internal signal emission processing unit 5 disposal ability scopes in the base band data that receives in step (5) operation exchange unit 4, and other base band datas are delivered to overall signal's emission processing unit 6;
Deliver to signal superimposer 8 after step (6) fixed configurations signal emission processing unit 5 is processed into sampled data with the base band data that receives, deliver to signalling crosspoint 7 after overall signal's emission processing unit 6 is processed into sampled data with the base band data that receives;
Step (7) signalling crosspoint 7 is delivered to signal superimposer 8 after the sampled data that receives is exchanged according to customer requirements;
Control unit 13 utilizes star ground webmaster signaling control feeding link receiving element 12 that the wave beam sampled data that ground station sends is up directly delivered to signal superimposer 8 on the star of the responsible control of step (8) feeding link;
Step (9) signal superimposer 8 is seen off after being added to the sampled data that receives in each wave beam.
Compared with prior art, the present invention has following advantage:
1, the present invention has realized supporting simultaneously on the star digital transparent forwarding and two kinds of patterns of processing and exchanging.To different user's requests different processing schemes can be arranged, both guarantee communication quality, also can very big optimization function be arranged simultaneously the configuration and the utilization of resource on the star.
2, the processing section utilizes layer-stepping exchange design on the culminant star of the present invention, has decomposed exchange pressure.
3, design the specific layering switching fabric of expanding, used this switching fabric to realize handling the resource dynamic configuration on the GEO satellite star, reduced the complexity of structure on the star.
Description of drawings
Fig. 1 is an exchange Processing Structure sketch map on the GEO satellite star
Fig. 2 is an operation exchange unit example schematic
Fig. 3 is a collection of letters crosspoint principle schematic
Fig. 4 is a collection of letters crosspoint one-level inside modules structural representation
Fig. 5 is a signalling crosspoint one-level inside modules structural representation
Fig. 6 is a signalling crosspoint principle schematic
Embodiment
Below we combine accompanying drawing and embodiment, specific embodiments of the invention is done further detailed description.Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Instance 1: the embodiment of the invention with based on handle on the star of the GEO satellite communication system of 3G technology with switching fabric be that example is explained on the GEO satellite high velocity star of proposition of the present invention and handled and switching method.
Application background: the GEO satellite mobile communication system is made up of GEO satellite S frequency range satellite payload, central station (network management center, operation control centre), gateway station and various subscriber station/terminal.Satellite adopts large-scale deployable net-shape antenna, produces 100 spot beams.Spot beam satisfies the demand of handheld terminal to higher G/T (quality factor) value and higher EIRP (equivalent isotropically radiated power).
The pretreated functional requirement of exchange on the star:
(1) supports two kinds of mode of operations of processing and exchanging on digital transparent and the star;
(2) processing of the up multiple signals of completion on the star (receive raised cosine filtering, correlator, PN code generator, channel estimator, phase rotation device, delay equalizer and multipath and merge module, Viterbi decoding, CRC check);
(3) processing of the descending multiple signals of completion on the star (adding CRC check position, 1/3 rate convolutional code, ovsf code spread spectrum, QPSK modulation);
(4) each wave beam will guarantee that at least process user is professional on 10 stars, and the whole network need be accomplished simultaneously on 1330 stars at most and manage business;
(5) be limited to 100 on the basic device IO mouth number.
Utilize system construction drawing of the present invention (Fig. 1), it is following to use the concrete scheme implementation of the present invention:
1, design collection of letters crosspoint, signalling crosspoint:
According to functional requirement (4) setup parameter: P=Q=10.Because the satellite spot-beam number is 100, obtains parameter I=100, and then obtain parameter: M=L=1330-100 * 10=330 again.
According to functional requirement (4) (5) and M, N value, design switching fabric part as follows:
Collection of letters switching fabric design (Fig. 6): according to collection of letters design feature; Utilize Fig. 3 structural design collection of letters switching fabric, utilize that formula is obtained
then this structure constitute by the one-level module of 7 16 input 49 outputs and the secondary modules of 7 49 input 49 outputs.Inside modules structure and intermodule connect to be realized according to theory structure.This fabric switch ability: total exchange capacity is 112 inputs, 343 outputs.
Signalling switching fabric design (Fig. 6): according to the signalling design feature, utilize that formula is obtained
then structure constitute by the one-level module of 7 49 input 49 outputs and the secondary modules of 7 49 input 16 outputs.Network configuration and collection of letters inverted configuration.Inside modules structure and intermodule connect to be realized according to theory structure.The fabric switch ability: total exchange capacity is input 343, output 112.
2, combine the instance background to accomplish conceptual design (Fig. 1):
Wave beam receiving element 9 is realized by S-band multi-beam reception antenna system (100 wave beam); Beam transmission unit 8 is realized by S-band multi-beam system of transmit antennas (100 wave beam); Feeding link transmitter unit 11 realizes that by S-band simple beam system of transmit antennas feeding link receiving element 12 is realized by S-band simple beam reception antenna system.
Remainder is realized (can select the radioresistance version FPGA:XQR4VFX60-10CF1144V of Xilinx for use) with FPGA.Wherein: the internal logic structure of collection of letters crosspoint 1, signalling crosspoint 7 is realized (each one-level, secondary module constitute by a slice FPGA) according to design in the part 1; Operation exchange unit 4 is realized by the time-shared bus structure; Signal superimposer 8 inside can adopt the frame synchronization scheme based on the WCDMA common signal channel to realize; The wave beam internal signal receives processing unit 2, overall signal receives processing unit 3 inner real functional requirement (2) requirements of accomplishing; Wave beam internal signal emission processing unit 5, overall signal's emission processing unit 6 inner functional requirement (3) requirement, overall Controlled CPU functions of control unit 13 completion on the star accomplished.
Combine accompanying drawing that specific embodiment of the present invention is specified above, but the present invention is not restricted to the foregoing description, under the spirit and scope situation of the claim that does not break away from the application, those skilled in the art can make various modifications or remodeling.
Claims (1)
1. processing and exchanging system on the star that is applicable to GEO (geostationary orbit) satellite mobile communication system; It is characterized in that; Contain: wave beam receiving element, feeding link transmitter unit, collection of letters crosspoint, fixed configurations signal processing unit, overall signal receive control unit, signal superimposer and beam transmission unit on processing unit, operation exchange unit, fixed configurations signal emission processing unit, overall signal's emission processing unit, signalling crosspoint, feeding link receiving element, the star; All constitute by digital integrated circuit chip, wherein:
The wave beam receiving element is provided with: Y input, constitute Y wave beam passage, and each wave beam contains the multichannel user data, whole sampled data Y of Y wave beam of input
DComprise in the net and internet two kinds of sampled datas, be provided with again: three road outputs: first via output, total Y, output is at said Y
DAfter the judgement of built-in judging module, do not need each circuit-switched data Y of on star, handling in the individual wave beam sampled data
D1, the second road output has Y, and output is at said Y
DIn the individual wave beam sampled data after the judgement of said judging module the multichannel data Y in said fixed configurations signal processing unit process range
D2, the Third Road output has Y, and output is at said Y
DAll the other need be the multichannel data Y that handles on the star outside said fixed configurations signal processing unit disposal ability scope after said judging module judgement in the individual wave beam sampled data
D3, said Y
D=Y
D1+ Y
D2+ Y
D3
The feeding link transmitter unit has Y data input, links to each other with each output of the first via of said wave beam receiving element, also is provided with: star earth mat management and control system signaling input so that according to the control signal of star earth mat management and control system unit with multichannel data Y
D1Be forwarded to ground station;
The fixed configurations signal processing unit; Total YP; Y is the wave beam sum, and P is the fixed configurations signal processing unit number of each beam configuration, imports the second circuit-switched data Y that supplies processing in the net in the own disposal ability scope from the second road output of said wave beam receiving element
D2, output YP roadbed band data;
Collection of letters crosspoint; At least one is provided with Y input, links to each other with each output of Third Road output in the said wave beam receiving element respectively; Said collection of letters crosspoint adopts can expand the layering switching fabric; Contain: one-level module and secondary module be totally two generic modules, realize with digital integrated circuit chip, wherein:
The one-level module contains N sub-one-level module, and each sub-one-level module is formed by connecting first order MUX and N second level MUX, wherein,
M is the number that said overall signal receives processing unit, establishes Y
D3Be at said Y
DUser's number in YP extraneous user's multichannel data of fixed configurations signal processing unit disposal ability described in the sampled data of road; Be numerically equal to the number of said user's multichannel data; In said Y wave beam passage, transmit; The pairing numbers of beams I=of sampled data [Y/N] of a plurality of wave beams of n said sub-one-level module correspondence, in n said sub-one-level module:
First order MUX has only one, and I input arranged, and imports following data: Input respectively
N * 1, Input
N * 1..., Input
N * 1, wherein: subscript n is represented the sequence number of said first order MUX, n=1,2 ..., N; Sampled data sequence number in i the wave beam input that subscript i representes to be comprised in n the said one-level submodule, total N, the output sum has N
2It is individual,
N second level MUX, each second level MUX have N N output corresponding to said first order MUX, and N destination address output arranged, and said N second level MUX amounts to total N
2Individual destination address output is used Road
1, Road
2...,
Expression,
The secondary module; Constitute by N sub-secondary module; Each sub-secondary module is a MUX, in each input of each MUX and the said one-level module in the sub-one-level module of corresponding sequence number each output of N second level MUX link to each other, amount to N
2Individual, whole secondary module is imported N * N altogether
2Individual destination address, each is as the said MUX n output N of said sub-secondary module
2Individual destination address is expressed as: Output
1 * 1, Output
1 * 2..., Output
1 * n...,
,
Said collection of letters crosspoint is accomplished the scheduling of input data according to the following steps, with the exchange between completion input data and the dateout,
Step (1). said n sub-one-level module input is total to the user data number in the sampled data in the wave beam of I road,
Step (2). differentiate whether there is X
1≤Y
1, wherein:
X
1Be the interior user data number of common I road wave beam that is input to said n sub-one-level module in the said one-level module,
Y
1Being that said secondary module is interior equals the destination address number in number corresponding to vacant output port number in the said sub-secondary module of said n sub-one-level module,
If: X
1≤Y
1, said first order MUX is directly exported the user data number X in the sampled data in the said I road wave beam altogether in then said n the sub-one-level module
1, said each user data all includes destination address interior, directly through said sub-secondary module output corresponding to the corresponding sequence number of second level MUX in n said n sub-one-level module of said sub-secondary module sequence number,
If: X
1＞Y
1,
Then: the first order MUX in the said one-level module duplicates the said interior user data number of I road wave beam that is total to of k part and holds with the input forwarding of k corresponding second level MUX of order in N in the said one-level module the said second level MUX; Wherein:
1≤k≤N; This conditional inquality begins to calculate from first module; Add up downwards at this inequality condition unmet front sequence; Until obtaining the k value
Step (3). said n sub-secondary module receive said n sub-one-level module output that step (2) sends corresponding to said Input
N * 1..., Input
N * 1..., Input
N * 1The N of sampled data address signal Road
1, Road
2...,
After, directly pass through N correspondingly
2Individual output port address is exported Output
1 * 1, Output
1 * 2..., Output
1 * n...,,
Individual sampled data, whole secondary module input signal are N Road
1To
Individual sampled data, total output then has N
2Individual sampled data Output
1 * 1, Output
1 * 2..., Output
1 * n...,
Overall signal receives processing unit, delivers to the operation exchange unit after M the sampled data from said collection of letters crosspoint input is treated to base band data altogether,
The operation exchange unit; Realize with time-shared bus; Deliver to said fixed configurations signal transmitter unit to the base band data of receiving from said fixed configurations signal processing unit, deliver to said overall signal emission processing unit to the data of receiving from said overall signal emission processing unit
Fixed configurations signal emission processing unit to each beam configuration Q, amounts to YQ, delivers to said signal superimposer to the base band data in said fixed configurations signal processing unit disposal ability scope that receives,
Overall signal's emission processing unit, L altogether, deliver to the signalling crosspoint to the base band data of receiving from said operation exchange unit,
The signalling crosspoint is in series by the firsts and seconds module that exchanges of signaling, wherein:
The one-level module of the exchange usefulness of signaling is made up of N sub-one-level module,
N said one-level Switching Module has N
2Individual sampled data is expressed as Input '
N * 1...,
Symbol " ' " shunt that is expressed as the signalling crosspoint sends into a MUX respectively after through an adder again; In the described adder; The output of first adder wherein one the tunnel is delivered to second adder, the output of second adder wherein a road deliver to the 3rd adder; By that analogy, until N
2Individual adder position, and be total to N in n said sub-one-level module
2N+1 first adder in the said sub-one-level module delivered in individual output, said MUX output N
2Individual address signal Road
1, Road
2...,
, directly deliver to each input of the corresponding sub-secondary module of secondary module of signalling crosspoint, accomplish N N
2Be input to N N
2The exchange of output,
The secondary module of signalling crosspoint is made up of N sub-secondary module, and sub-secondary module also is a MUX output I ' road sampled data
1≤K≤N accomplishes N N
2Be input to the exchange of the individual output of I ',
Simultaneously, said signalling crosspoint also is the unsymmetric structure of an input sampling data way greater than output sampled data way;
The feeding link receiving element is directly delivered to said signal superimposer to the jumping sampled data that ground station sends up according to the star ground webmaster signaling that control unit on the said star sends,
The signal superimposer, the sampled data of sending the ground station's sampled data that receives and signalling crosspoint here superposes, and is sent to the beam transmission unit.
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| CN101917222B (en) * | 2010-08-13 | 2012-12-26 | 西安空间无线电技术研究所 | Star-borne switchboard with distributed mixing structure and implementation method thereof |
| CN101917728B (en) * | 2010-08-13 | 2012-11-14 | 西安空间无线电技术研究所 | Dynamic allocation realization structure of satellite-borne treatment source pool |
| CN102255650B (en) * | 2011-08-25 | 2014-01-15 | 西安空间无线电技术研究所 | Satellite switching system based on time and frequency domains |
| CN104270793A (en) * | 2014-09-18 | 2015-01-07 | 北京邮电大学 | Resource allocation method based on satellite cooperative transmission |
| CN105827305B (en) * | 2016-04-15 | 2018-10-09 | 中国电子科技集团公司第五十四研究所 | The transparent reconfigurable flexible being combined with processing forwards implementation method |
| CN106169981B (en) * | 2016-08-25 | 2019-06-28 | 中国电子科技集团公司第十研究所 | Spaceborne signal processing platform layered circuit exchange system |
| CN114124194A (en) * | 2021-11-15 | 2022-03-01 | 中国电子科技集团公司第五十四研究所 | Satellite flexible switching system and method based on digital channelized beam forming |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1310893A (en) * | 1998-05-19 | 2001-08-29 | 史丹佛电信公司 | Flux density reduction in OCDMA satellite communication system |
| FR2886086A1 (en) * | 2005-05-20 | 2006-11-24 | Cnes Epic | METHOD FOR ALLOCATING FREQUENCY SUBWAYS TO AMOUNT RADIO FREQUENCY LINKS AND NETWORK USING SUCH A METHOD |
| US7277641B1 (en) * | 2003-05-06 | 2007-10-02 | Ball Aerospace & Technologies Corp. | Multiple access space communications optical system using a common telescope aperture |
| US7366463B1 (en) * | 2000-05-05 | 2008-04-29 | The Directv Group, Inc. | Military UHF and commercial Geo-mobile system combination for radio signal relay |
| CN101414866A (en) * | 2007-10-17 | 2009-04-22 | 中卫视讯卫星科技（北京）有限公司 | Mobile target satellite tracking localization, recognition, voice video and data transmission terminal |
-
2010
- 2010-03-12 CN CN 201010125074 patent/CN101795493B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1310893A (en) * | 1998-05-19 | 2001-08-29 | 史丹佛电信公司 | Flux density reduction in OCDMA satellite communication system |
| US7366463B1 (en) * | 2000-05-05 | 2008-04-29 | The Directv Group, Inc. | Military UHF and commercial Geo-mobile system combination for radio signal relay |
| US7277641B1 (en) * | 2003-05-06 | 2007-10-02 | Ball Aerospace & Technologies Corp. | Multiple access space communications optical system using a common telescope aperture |
| FR2886086A1 (en) * | 2005-05-20 | 2006-11-24 | Cnes Epic | METHOD FOR ALLOCATING FREQUENCY SUBWAYS TO AMOUNT RADIO FREQUENCY LINKS AND NETWORK USING SUCH A METHOD |
| CN101414866A (en) * | 2007-10-17 | 2009-04-22 | 中卫视讯卫星科技（北京）有限公司 | Mobile target satellite tracking localization, recognition, voice video and data transmission terminal |
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