CN101695193A - Method for sending and receiving downstream data and device thereof - Google Patents
Method for sending and receiving downstream data and device thereof Download PDFInfo
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- CN101695193A CN101695193A CN200910196863A CN200910196863A CN101695193A CN 101695193 A CN101695193 A CN 101695193A CN 200910196863 A CN200910196863 A CN 200910196863A CN 200910196863 A CN200910196863 A CN 200910196863A CN 101695193 A CN101695193 A CN 101695193A
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Abstract
The embodiment of the invention discloses a method for sending and receiving downstream data and a device thereof, wherein the method for sending the downstream data comprises the steps of respectively allocating corresponding training sequence to a plurality of data streams which are needed to be transmitted downstream; and sending the plurality of data streams allocated with the corresponding training sequence through a downstream channel. Compared with the prior art, the plurality of data streams can be simultaneously transmitted by the down link between a base station and a mobile station through one channel in the technical scheme, so as to be merged and transmitted within the same time slot, thus increasing the data flow of the down link.
Description
Technical field
The present invention relates to communication technical field, more particularly, relate to the method and apparatus that a kind of downlink data sends and downlink data receives.
Background technology
GSM (Global System for Mobile communications, global system for mobile communications), it is second generation mobile communication technology, because coming into the open and many property of advantage of gsm system standard, standard, worldwide obtained soon using widely, realized the networking roaming of mobile subscriber in the world wide.
Stipulated the foundation structure of digital cellular telephone service in the GSM standard.Usually, the gsm system functional architecture comprises MS (Mobile Station, travelling carriage), BSS (Base Station Subsystem, base station sub-system), NSS (Network Switch Subsystem, network subsystem).Each all comprises the functional entity of communicating by letter by the use specific protocol these subsystems between various interfaces.Wherein, BSS mainly provides wave point to make user's travelling carriage can insert NSS, finishes the function that user's travelling carriage inserts; NSS mainly provides the speech channel exchange and is structured in the various voice/data traffic functions that speech channel exchanges.The gsm wireless interface synthesis FDMA (Frequency Division Multiple Access, frequency division multiple access) and two kinds of technology of TDMA (Time Division Multiple Access, time division multiple access).Available GSM emission spectrum is divided into every section by the FDMA technology and is the carrier wave frequency range of 200KHz.One or more carrier wave frequency ranges are assigned to different base stations, and each carrier signal adopts the TDMA technology to be divided into 8 time slots, and 8 continuous time slot form a time division multiplexing tdm A frame.1 time slot (TS) of the tdma frame on the promptly corresponding carrier frequency of the physical channel of gsm system.
In gsm system, up link is meant the link from travelling carriage to the base station direction, and down link is meant from the base station to the link of travelling carriage direction.In the prior art, the GSM technology is widely used in symmetrical service, and as speech business and mobile video telephone business etc., promptly up link and down link transmit a data flow respectively, and the uplink and downlink link has identical data traffic.
Along with the development of GSM technology, growing non-symmetrical service transmission has appearred between base station and the travelling carriage.So-called asymmetrical business is meant the data traffic obvious difference of up link and down link between base station and the travelling carriage, internet service for example, usually people are when online, the data downloaded amount is much higher than the data volume of uploading, therefore, the data traffic of down link is much larger than the uplink data flow amount.In this case, based on the transmission means of existing symmetrical service, be not suitable for the data flow transmission of non-symmetrical service.
Summary of the invention
In view of this, the embodiment of the invention provides the method and apparatus that a kind of downlink data sends and downlink data receives, to increase the downlink chain circuit data stream amount.
The embodiment of the invention provides a kind of downlink data transmission method, and described method comprises:
Be respectively the corresponding training sequence of a plurality of distribution of flows that need carry out downlink transfer;
Send described a plurality of data flow of having distributed corresponding training sequence by a down channel.
Accordingly, the embodiment of the invention provides a kind of downlink data dispensing device, and described device comprises:
The training sequence distribution module is used to be respectively the corresponding training sequence of a plurality of distribution of flows that need carry out downlink transfer;
Issue module, be used for sending described a plurality of data flow of having distributed corresponding training sequence by a down channel.
Accordingly, the embodiment of the invention provides a kind of downlink data method of reseptance, and described method comprises:
Receive a plurality of data flow that send by a down channel, be assigned corresponding training sequence respectively in described a plurality of data flow;
Utilize described training sequence to obtain the time delay of described down channel;
Utilize the time delay of described down channel that a plurality of data flow that receive are carried out Synchronous Processing.
Accordingly, the embodiment of the invention provides a kind of downlink data receiving system, and described device comprises:
Receiver module is used to receive a plurality of data flow that send by a down channel, is assigned corresponding training sequence respectively in described a plurality of data flow;
Down channel time delay acquisition module is used to utilize described training sequence to obtain the time delay of described down channel;
Synchronous processing module is used to utilize the time delay of described down channel that a plurality of data flow that receive are carried out Synchronous Processing.
Compare with prior art, the technical scheme that the embodiment of the invention provides has the following advantages and characteristics:
At first, down link in the embodiment of the invention between base station and the travelling carriage can pass through a channel, transmit a plurality of data flow simultaneously, can realize that a plurality of data flow are incorporated in same time slot to be transmitted, therefore, in taking identical downlink frequency domain and time-domain resource, transmission more data stream, can increase the downlink chain circuit data stream amount, improve the utilance of downlink time slots resource.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of downlink data transmission method flow chart of steps of the embodiment of the invention;
Fig. 2 is a kind of downlink data method of reseptance of embodiment of the invention flow chart of steps;
Fig. 3 is the structural representation of a kind of downlink data dispensing device of the embodiment of the invention;
Fig. 4 is the structural representation of the another kind of downlink data dispensing device of the embodiment of the invention;
Fig. 5 is the structural representation of a kind of downlink data receiving system of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is carried out clear, complete description.
Embodiment one:
In order to increase the data traffic of down link in the prior art, a kind of communication mode that more is applicable to the non-symmetrical service transmission is provided, and the embodiment of the invention one provides a kind of downlink data transmission method, with reference to figure 1, show the flow chart of the embodiment of the invention one, specifically may further comprise the steps:
Overcome the intersymbol interference that multipath causes for the ease of travelling carriage utilization equilibrium, in time slot, will insert the required training sequence of adaptive equalizer.So-called training sequence is the Bit String of known definition, and used when carrying out equalizing training for the travelling carriage reception, (TSC) comes mark with training sequence code.
In the embodiment of the invention, the content of described a plurality of data flow can be identical, also can be different, and the embodiment of the invention is not done concrete qualification to this.Down link between base station and the travelling carriage can pass through a channel, transmit a plurality of data flow simultaneously, can realize that a plurality of data flow are incorporated in same time slot to be transmitted, therefore, in taking identical downlink frequency domain and time-domain resource, transmission more data stream can increase the downlink chain circuit data stream amount, improves the utilance of downlink time slots resource.
Handle in order to guarantee that travelling carriage can correctly be separated to be in harmonious proportion to decipher to a plurality of data flow that receive, in another embodiment of the present invention, the base station is by when being the corresponding training sequence of a plurality of distribution of flows, be the corresponding power of a plurality of distribution of flows, the process of this distribution power is included as the identical power of described a plurality of distribution of flows or distributes different power respectively for each data flow.Wherein, it is technology well-known to those skilled in the art that this part content of performance number is distributed for the needs data flow transmitted in the base station, and its detailed process embodiment of the invention is no longer given unnecessary details at this.
For the ease of technical solution of the present invention is further understood, technical solution of the present invention is described in detail below in conjunction with embodiment.
Antenna is the important component part of base station, and the data flow that travelling carriage receives is finally launched by antenna opening.The base station is divided into single antenna transceiver base station and many antenna receiving-sending base stations usually.
When the base station is the single antenna transceiver base station, by the base station is that a plurality of data flow are distributed corresponding training sequence code and corresponding power respectively, the content of described a plurality of data flow can be identical, also can be different, distinguish by training sequence code and corresponding power between each data flow, then a plurality of data flow correspondences are added up, as final emission results, launch from the antenna for base station mouth, realization is with the parallel down link that is sent in of a plurality of data flow, transmit a plurality of data flow by the base station to receiving mobile, in this case, down link running time-frequency resource shared when the shared down link running time-frequency resource of described a plurality of data flow and data flow of transmission is identical.Equally, the process of base station assigns power is included as the identical power of described a plurality of distribution of flows or distributes different power respectively for each data flow.When handling in order to guarantee that travelling carriage can correctly be separated to be in harmonious proportion to decipher to a plurality of data flow that receive, when the base station is distributed different power respectively for each data flow, each performance number can be set be the equal difference distribution, and the data flow employing TSC of hypothesis performance number maximum
0As training sequence, performance number minimal data stream adopts TSC
kAs training sequence, wherein, k represents the number by the data flow of a down channel transmission.
When the base station is many antenna receiving-sending base stations, be that a plurality of data flow are distributed corresponding training sequence code and corresponding power respectively by the base station, the content of described a plurality of data flow can be identical, also can be different.When a plurality of data flow are distributed different performance numbers respectively, distinguish by training sequence code and corresponding power between each data flow, different distribution of flows is launched to different antennas.When the base station is distributed different power respectively for each data flow, each performance number can be set be the equal difference distribution.Might as well suppose that prominent data flow adopts TSC
0As training sequence, be assigned to antenna 0, power minimal data stream adopts TSC
k, be assigned to antenna k, wherein, should guarantee that enough antenna for base station carry out the distribution of described data flow.Then a plurality of data flow are launched from different antenna for base station mouths respectively, a plurality of data flow are finished stack on wireless channel, realization is incorporated in same down channel with a plurality of data flow, by this down channel, transmit a plurality of data flow at synchronization to receiving mobile by the base station, down link running time-frequency resource shared when the shared down link running time-frequency resource of described a plurality of data flow and data flow of transmission is identical.
In another embodiment of technical solution of the present invention, the base station still is many antenna receiving-sending base stations, when the base station is a plurality of data flow when distributing identical power respectively, is distinguished by training sequence code between each data flow.A plurality of data flow respectively from different antenna for base station mouth emissions, certainly, should be guaranteed that enough antenna for base station carry out the distribution of described data flow.A plurality of data flow are finished stack on wireless channel, realization is incorporated in same down channel with a plurality of data flow, by this down channel, transmit a plurality of data flow at synchronization to receiving mobile by the base station, down link running time-frequency resource shared when the shared down link running time-frequency resource of described a plurality of data flow and data flow of transmission is identical.
As seen, down link between base station and the travelling carriage can pass through a channel, transmit a plurality of data flow simultaneously, can realize that a plurality of data flow are incorporated in same time slot to be transmitted, therefore, in taking identical downlink frequency domain and time-domain resource, transmission more data stream, can increase the downlink chain circuit data stream amount, improve the utilance of downlink time slots resource.
When travelling carriage passes through Random Access Channel (Random Access Channel, RACH) initiating to insert at random request, base station to the base station handles when allowing described travelling carriage to insert by authentication etc., by Access granted Channel AGCH (Access Control Channel, ACCH) the access request of described travelling carriage is made replied, the parameter that is used to transmit the Traffic Channel of a plurality of data flow between described base station and the terminal is sent to travelling carriage, and the parameter of described Traffic Channel comprises: the number of distributing to training sequence code, performance number and institute's data flow transmitted of each data flow; And described base station and terminal switch to Traffic Channel simultaneously, carry out issuing and receiving of a plurality of data flow respectively.Thereby the assurance terminal receives the complexity of handling by increasing, and can pass through the correct descending result who obtains a plurality of data flow of a down channel, thereby under the situation that does not increase the down time-frequency resource occupation, improve downlink data traffic of users.
Embodiment two:
Corresponding to above-mentioned downlink data transmission method, the embodiment of the invention provides a kind of downlink data method of reseptance, so that travelling carriage can receive a plurality of data flow that send by a down channel, as shown in Figure 2, flow chart for described downlink data method of reseptance specifically may further comprise the steps:
Because the multipath transmisstion of wireless channel, be subjected to its characteristic of channel to influence the as easy as rolling off a log intersymbol interference that causes, there is different transmission paths such as the transmission of wireless signals process, time delay difference between different paths causes the generation of intersymbol interference, because the narrow-band characteristic of filter also can be brought the expansion of symbol in time domain, cause the intersymbol interference effect simultaneously.Cause when having a strong impact on when crosstalking, just must proofread and correct system.Therefore, after receiving downstream data flow, the required training sequence of the adaptive equalizer that terminal utilizes the base station will insert in time slot carries out related synchronization to the possible range of the traffic spike sequence that receives.
Usually, terminal is the single antenna transmitting-receiving.After receiving a plurality of data flow that send by down channel when terminal, find out the position at the training sequence place in each receiving sequence at first respectively, carrying out the channel fading situation by training sequence estimates and matched filtering, obtain the time delay of described down channel, utilize the time delay of described down channel again, adopt the maximal possibility estimation algorithm to carry out Synchronous Processing to the burst that receives, make that terminal finally can obtain to issue consistent flow of data with the base station.
Handle in order to guarantee that travelling carriage can correctly be separated to be in harmonious proportion to decipher to a plurality of data flow that receive, those skilled in the art can be when being the corresponding training sequence of a plurality of distribution of flows by the base station, be the corresponding power of a plurality of distribution of flows, the process of this distribution power is included as the identical power of described a plurality of distribution of flows or distributes different power respectively for each data flow.
When described a plurality of data flow were distributed identical performance number respectively, the described detailed process of the time delay that training sequence obtains described down channel of utilizing was:
Utilize the corresponding training sequence that distributes in described a plurality of data flow, obtain the time delay of each data flow respectively, wherein, the time delay of described each data flow is respectively applied for each data flow basis of expression time delay that training sequence obtained separately;
According to the time delay of each data flow that obtains respectively, obtain the time average of the time delay of corresponding expression down channel, with the time delay of this time average as described down channel.
Described time delay according to each data flow that obtains respectively obtains the corresponding time average of representing the time delay of down channel, can be by directly the time delay of each data flow being sued for peace, on average obtaining;
Further, also can be by combination by the pairing weight parameter of each training sequence code, the time value of the time delay of each data flow is carried out quantification treatment, that is: be weighted average treatment by time delay, draw the time value of the time delay of final expression down channel each data flow.This technical scheme is owing to consider the time delay of a plurality of data flow simultaneously, and therefore, the time delay accuracy of the down channel of acquisition is higher, and is better for the Synchronous Processing effect of downlink data receiving.
Need to prove, when described a plurality of data flow are distributed identical performance number respectively, can obtain the time delay of this data flow according to the pairing training sequence of any data flow in a plurality of data flow, and with the time delay of this data flow time delay as the down channel that sends described a plurality of data flow.Certainly, the requirement for the Synchronous Processing of downlink data receiving is depended in the concrete application scenarios in the enforcement of this technical scheme.Therefore, those skilled in the art can specifically be provided with according to practical application.
Wherein, obtain the content that the time delay of respective stream of data is well known to those skilled in the art, no longer give unnecessary details at this according to the training sequence of distributing to data flow.
In another embodiment of technical solution of the present invention, when described a plurality of data flow are distributed different performance numbers respectively, because the signal strength signal intensity maximum of prominent data flow correspondence, at first choose prominent data flow, utilize the training sequence of this prominent data flow correspondence to obtain the time delay of this data flow; Then can be with the time delay of this data flow time delay as whole down channel.
Then describedly utilize described down channel time delay that described down channel is carried out Synchronous Processing specifically to comprise: utilize the described time delay of utilizing prominent data flow, described down channel is carried out Synchronous Processing.
In addition, when described a plurality of data flow are distributed different performance numbers respectively, also can obtain the time delay of each data flow respectively,, obtain the time delay of corresponding expression down channel according to the mean value of the time delay of each data flow that obtains respectively.The time average of the time delay of corresponding expression down channel can be by directly suing for peace the time delay of each data flow, on average obtaining; Also can be by in conjunction with by the pairing weight parameter of each training sequence code, the time delay of each data flow of obtaining is carried out quantification treatment, that is: be weighted average treatment by time delay to each data flow, obtain the time delay of expression down channel.
Obtain in the time delay process of this data flow at the training sequence that utilizes prominent data flow correspondence, descending remaining data flow is considered interfering noise signal at travelling carriage.The training sequence code that uses prominent data flow correspondence carries out the same prior art of method of Synchronous Processing to a plurality of data flow that receive, and the embodiment of the invention is no longer given unnecessary details at this.
Travelling carriage is finished after the Synchronous Processing, need carry out decode operation to a plurality of data flow that receive.Simply being described below of this decode operation process: after prominent data flow was received processing, travelling carriage carried out coding again, and deducted the result behind the coding from original reception result.Use the training sequence code of time big data flow correspondence of power to receive processing then.Repeat said process, be correctly decoded processing up to all data flow, promptly travelling carriage is finished received a plurality of data flow is distinguished.
Thereby, by embodiment of the invention technical scheme, can overcome the change at random of the characteristic of channel that the change at random because of distance between travelling carriage and base station causes, make that the Synchronous Processing effect of travelling carriage is more remarkable.
One of ordinary skill in the art will appreciate that, the all or part of step of realization said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Embodiment three:
Corresponding to above-mentioned downlink data transmission method, the embodiment of the invention provides a kind of downlink data dispensing device, as shown in Figure 3, is the structural representation of this downlink data dispensing device, and this device can comprise:
Training sequence distribution module 301 is used to be respectively the corresponding training sequence of a plurality of distribution of flows that need carry out downlink transfer;
This downlink data dispensing device can be realized by a channel, transmit a plurality of data flow simultaneously, can realize that a plurality of data flow are incorporated in same time slot to be transmitted, therefore, in taking identical downlink frequency domain and time-domain resource, transmission more data stream can increase the downlink chain circuit data stream amount, thereby improves the utilance of downlink time slots resource.
Handle in order to guarantee that travelling carriage can correctly be separated to be in harmonious proportion to decipher to a plurality of data flow that receive, in another embodiment, can be when being the corresponding training sequence of a plurality of distribution of flows, be the corresponding power of a plurality of distribution of flows, the process of this distribution power is included as the identical power of described a plurality of distribution of flows or distributes different power respectively for each data flow.The related downlink data dispensing device of this embodiment as shown in Figure 4, described device can also comprise on the basis of embodiment three:
Need to prove that in technical solution of the present invention, described downlink data dispensing device can be base station itself when specific implementation, also can be a functional entity that is independent of the base station, the present invention does not do concrete qualification to this.
Embodiment four:
Corresponding to above-mentioned downlink data method of reseptance, the embodiment of the invention also provides a kind of downlink data receiving system embodiment, and as shown in Figure 5, described device comprises:
Down channel time delay acquisition module 502 is used to utilize described training sequence to obtain the time delay of described down channel;
Handle in order to guarantee that travelling carriage can correctly be separated to be in harmonious proportion to decipher to a plurality of data flow that receive, those skilled in the art can be when being the corresponding training sequence of a plurality of distribution of flows, be the corresponding power of a plurality of distribution of flows, the process of this distribution power is included as the identical power of described a plurality of distribution of flows or distributes different power respectively for each data flow.
When described a plurality of data flow were distributed identical performance number respectively, described down channel time delay acquisition module 502 was used for:
Utilize the corresponding training sequence that distributes in described a plurality of data flow, obtain the time delay of each data flow respectively,, obtain the time delay of corresponding expression down channel according to the mean value of the time delay of each data flow that obtains respectively; Perhaps, obtain the time delay of this data flow according to the corresponding training sequence of any one data flow in described a plurality of data flow, as the time delay of described down channel.
Then described synchronous processing module 503 is used to utilize the time delay of the down channel that described down channel time delay acquisition module 502 obtains, and a plurality of data flow that receive are carried out Synchronous Processing.
Further, down channel time delay acquisition module 502 also can be by combination by the pairing weight parameter of each training sequence code, the time delay of each data flow is carried out quantification treatment, promptly be weighted average treatment, draw the time value of the time delay of final expression down channel by time delay to each data flow.This technical scheme is owing to consider the time delay of a plurality of data flow simultaneously, and therefore, the time delay accuracy of the down channel of acquisition is higher, and is better for the Synchronous Processing effect of downlink data receiving.
In another embodiment, when described a plurality of data flow were distributed different performance numbers respectively, described down channel time delay acquisition module 502 was used for:
Utilize the training sequence of prominent data flow correspondence to obtain the time delay of this data flow, with the time delay of this data flow time delay as described down channel; Perhaps, utilize the corresponding training sequence that distributes in described a plurality of data flow, obtain the time delay of each data flow respectively,, obtain the value of the time delay of corresponding expression down channel according to the mean value of the time delay of each data flow that obtains respectively.
Further, described down channel time delay acquisition module 502 also can be by combination by the pairing weight parameter of each training sequence code, the time delay of each data flow is carried out quantification treatment, promptly be weighted average treatment, draw the value of the time delay of final expression down channel by time delay to each data flow.
Need to prove that in technical solution of the present invention, described downlink data receiving system can be travelling carriage itself when specific implementation, also can be a functional entity that is independent of travelling carriage, the embodiment of the invention is not done concrete qualification to this.
In the embodiment of the invention, be sent in the down channel process a plurality of data flow are parallel, by be the corresponding training sequences of a plurality of distribution of flows, a plurality of data flow are distinguished in realization; In addition, by when being the corresponding training sequence of a plurality of distribution of flows, be the different power of a plurality of distribution of flows, the assurance travelling carriage can correctly be separated to be in harmonious proportion to decipher and handle a plurality of data flow that receive.
Need to prove that in the embodiment of the invention, above-mentioned functional module all can be passed through software, hardware or software and hardware combining and realize that the embodiment of the invention is not done concrete restriction to this.
Embodiment five:
The embodiment of the invention is also corresponding to provide a kind of downlink data transmission system, and described system comprises: base station and travelling carriage;
Described base station is used to be respectively the corresponding training sequence of a plurality of distribution of flows that need carry out downlink transfer; Send described a plurality of data flow of having distributed corresponding training sequence by a down channel;
Described travelling carriage is used to receive a plurality of data flow that send by a down channel, is assigned corresponding training sequence respectively in described a plurality of data flow; Utilize described training sequence to obtain the time delay of described down channel; Utilize the time delay of described down channel that described down channel is carried out Synchronous Processing.
As seen, down link between base station and the travelling carriage can pass through a channel, transmit a plurality of data flow simultaneously, can realize that a plurality of data flow are incorporated in same time slot to be transmitted, therefore, in taking identical downlink frequency domain and time-domain resource, transmission more data stream, can increase the downlink chain circuit data stream amount, improve the utilance of downlink time slots resource;
In addition, a plurality of data flow are being sent by a down channel,, realizing a plurality of data flow are distinguished by being the corresponding training sequences of a plurality of distribution of flows; In addition, by when being the corresponding training sequence of a plurality of distribution of flows, be the different power of a plurality of distribution of flows, the assurance travelling carriage can correctly be separated to be in harmonious proportion to decipher and handle a plurality of data flow that receive.
For device and system embodiment, because it is substantially corresponding to method embodiment, so describe fairly simplely, relevant part gets final product referring to the part explanation of method embodiment.Device described above and system embodiment only are schematic, wherein said unit as the separating component explanation can or can not be physically to separate also, the parts that show as the unit can be or can not be physical locations also, promptly can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select wherein some or all of module to realize the purpose of present embodiment scheme according to the actual needs.Those of ordinary skills promptly can understand and implement under the situation of not paying creative work.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use technical solution of the present invention.Should be pointed out that for those skilled in the art under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.Therefore, the embodiment of the invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.Any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a downlink data transmission method is characterized in that, described method comprises:
Be respectively the corresponding training sequence of a plurality of distribution of flows that need carry out downlink transfer;
Send described a plurality of data flow of having distributed corresponding training sequence by a down channel.
2. downlink data transmission method according to claim 1 is characterized in that, also comprises:
Be the identical performance number of described a plurality of distribution of flows; Perhaps, distribute different performance numbers respectively for described a plurality of data flow.
3. downlink data transmission method according to claim 1 and 2 is characterized in that, describedly passes through down channel and sends described a plurality of data flow of having distributed corresponding training sequence, comprising:
By individual antenna described a plurality of data flow are issued; Perhaps,
Described a plurality of data flow are respectively allocated to different antennas, simultaneously described a plurality of data flow are issued by a plurality of antennas.
4. a downlink data dispensing device is characterized in that, described device comprises:
The training sequence distribution module is used to be respectively the corresponding training sequence of a plurality of distribution of flows that need carry out downlink transfer;
Issue module, be used for sending described a plurality of data flow of having distributed corresponding training sequence by a down channel.
5. downlink data dispensing device according to claim 4 is characterized in that, it is characterized in that, described device also comprises:
The power division module is used to described a plurality of data flow to distribute identical performance number respectively; Perhaps, distribute different performance numbers respectively for described a plurality of data flow.
6. a downlink data method of reseptance is characterized in that, described method comprises:
Receive a plurality of data flow that send by a down channel, be assigned corresponding training sequence respectively in described a plurality of data flow;
Utilize described training sequence to obtain the time delay of described down channel;
Utilize the time delay of described down channel that a plurality of data flow that receive are carried out Synchronous Processing.
7. downlink data method of reseptance according to claim 6 is characterized in that, the described time delay of utilizing described training sequence to obtain described down channel comprises:
When described a plurality of data flow are distributed identical performance number respectively,
Utilize the corresponding training sequence that distributes in described a plurality of data flow, obtain the time delay of each data flow respectively, obtain the time delay of corresponding expression down channel according to the mean value of the time delay of each data flow that obtains respectively; Perhaps,
Obtain the time delay of this data flow according to the corresponding training sequence of any one data flow in described a plurality of data flow, as the time delay of described down channel.
8. downlink data method of reseptance according to claim 6 is characterized in that, describedly utilizes described training sequence to obtain described down channel time delay, comprising:
When described a plurality of data flow are distributed different performance numbers respectively, utilize the training sequence of prominent data flow correspondence to obtain the time delay of this data flow, with the time delay of this data flow time delay as described down channel; Perhaps,
Utilize the corresponding training sequence that distributes in described a plurality of data flow, obtain the time delay of each data flow respectively, obtain the time delay of corresponding expression down channel according to the mean value of the time delay of each data flow that obtains respectively.
9. a downlink data receiving system is characterized in that, described device comprises:
Receiver module is used to receive a plurality of data flow that send by a down channel, is assigned corresponding training sequence respectively in described a plurality of data flow;
Down channel time delay acquisition module is used to utilize described training sequence to obtain the time delay of described down channel;
Synchronous processing module is used to utilize the time delay of described down channel that a plurality of data flow that receive are carried out Synchronous Processing.
10. downlink data receiving system according to claim 9 is characterized in that, when described a plurality of data flow were distributed identical performance number respectively, described down channel time delay acquisition module was used for:
Utilize the corresponding training sequence that distributes in described a plurality of data flow, obtain the time delay of each data flow respectively, obtain the time delay of corresponding expression down channel according to the mean value of the time delay of each data flow that obtains respectively; Perhaps,
Obtain the time delay of this data flow according to the corresponding training sequence of any one data flow in described a plurality of data flow, as the time delay of described down channel.
11. downlink data receiving system according to claim 9 is characterized in that, when described a plurality of data flow were distributed different performance numbers respectively, described down channel time delay acquisition module was used for:
Utilize the training sequence of prominent data flow correspondence to obtain the time delay of this data flow, with the time delay of this data flow time delay as described down channel; Perhaps,
Utilize the corresponding training sequence that distributes in described a plurality of data flow, obtain the time delay of each data flow respectively, obtain the time delay of corresponding expression down channel according to the mean value of the time delay of each data flow that obtains respectively.
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| CN200910196863A CN101695193A (en) | 2009-09-27 | 2009-09-27 | Method for sending and receiving downstream data and device thereof |
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| CN (1) | CN101695193A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013149439A1 (en) * | 2012-04-06 | 2013-10-10 | 中兴通讯股份有限公司 | Power allocation method and communication node |
| CN104396329A (en) * | 2012-06-14 | 2015-03-04 | 大陆汽车有限责任公司 | Method for verifying and/or preprocessing data packets and control device set up to carry out the method |
| CN107889251A (en) * | 2016-09-30 | 2018-04-06 | 华为技术有限公司 | A kind of determination method, the network equipment and the terminal of time-domain resource unit set structure |
| CN108132892A (en) * | 2012-10-22 | 2018-06-08 | 英特尔公司 | High-performance interconnection physical layer |
| CN115396271A (en) * | 2022-08-02 | 2022-11-25 | 北京睿信丰科技有限公司 | Method and equipment for transmitting and receiving single-carrier dual-antenna signal under multipath channel |
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2009
- 2009-09-27 CN CN200910196863A patent/CN101695193A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013149439A1 (en) * | 2012-04-06 | 2013-10-10 | 中兴通讯股份有限公司 | Power allocation method and communication node |
| CN103369657A (en) * | 2012-04-06 | 2013-10-23 | 中兴通讯股份有限公司 | Power allocation method and communication node |
| CN104396329A (en) * | 2012-06-14 | 2015-03-04 | 大陆汽车有限责任公司 | Method for verifying and/or preprocessing data packets and control device set up to carry out the method |
| CN104396329B (en) * | 2012-06-14 | 2019-04-16 | 大陆汽车有限责任公司 | The method of verifying and/or preprocessed data packet and the control instrument for being arranged for carrying out this method |
| CN108132892A (en) * | 2012-10-22 | 2018-06-08 | 英特尔公司 | High-performance interconnection physical layer |
| CN107889251A (en) * | 2016-09-30 | 2018-04-06 | 华为技术有限公司 | A kind of determination method, the network equipment and the terminal of time-domain resource unit set structure |
| CN107889251B (en) * | 2016-09-30 | 2020-04-14 | 华为技术有限公司 | Method for determining time domain resource unit set structure, network equipment and terminal |
| CN115396271A (en) * | 2022-08-02 | 2022-11-25 | 北京睿信丰科技有限公司 | Method and equipment for transmitting and receiving single-carrier dual-antenna signal under multipath channel |
| CN115396271B (en) * | 2022-08-02 | 2023-12-08 | 北京睿信丰科技有限公司 | Method and equipment for transmitting and receiving single-carrier double-antenna signal under multipath channel |
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Application publication date: 20100414 |