CN1452420A - Radio communication method based on time division diplexing - Google Patents
Radio communication method based on time division diplexing Download PDFInfo
- Publication number
- CN1452420A CN1452420A CN 02117427 CN02117427A CN1452420A CN 1452420 A CN1452420 A CN 1452420A CN 02117427 CN02117427 CN 02117427 CN 02117427 A CN02117427 A CN 02117427A CN 1452420 A CN1452420 A CN 1452420A
- Authority
- CN
- China
- Prior art keywords
- time slot
- time
- downlink
- slot
- method based
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
A wireless communication method based on time division duplex (TDD) includes distributing the time slices for up and down transmissions in a time frame, distributing the synchronizing time slot, control time slot and service time slot for both time slices while inserting an up time slot between down control time slot and down service time slot, distributing different service time slots to different users, optimizing the time slots distributed to different users in each time frame, receiving and processing optimized parameters by user receiver, and receiving service data. Its advantages are high system throughput and high spectrum efficiency.
Description
Technical field
The present invention relates to the communication means in the wireless communication system, relate in particular to communication means based on TDD radio communication system.
Background technology
In legacy wireless communication system, a base station provides service by different multiple access access schemes for different user, and the most frequently used is frequency division multiple access (FDMA), time division multiple access (TDMA) and code division multiple access (CDMA) technology.In the TDD modular system of present third generation radio communication; for example in TD SDMA (TD-SCDMA) system; stipulated subframe structure of time slot as shown in Figure 2; among Fig. 2; except being used to realize three synchronous special time slots: descending pilot frequency time slot (DwPTS), protection period (GP, Guard Period); uplink pilot time slot (UpPTS) in addition, it is long that 7 remaining business time-slots are fixed as 0.675ms.Wherein, first time slot (TS0) always divide be used in descending, second time slot (TS1) always divide be used in up.Except first up-downgoing switching point that is positioned at GP, also there be second unfixed up-downgoing switching point, so that realize the setting of up-downgoing ratio flexibly, support symmetry and asymmetrical up-downgoing business.In Fig. 2, second up-downgoing switching point is arranged between the 3rd time slot (TS2) and the 4th time slot (TS3), thereby can support that the up-downgoing ratio is 2: 5 a non-symmetrical service.In each time slot of TD-SCDMA system, support a plurality of users to adopt transmitting and receiving that the technology of CDMA walks abreast.
In third generation wireless communication system, data service will be above speech business, and occupies an leading position.Data service and speech business exist essential difference aspect two: data service may be asymmetric, for example the internet browsing business; In addition, data service does not have speech business so strict to the requirement of time of delay.Therefore, for data service, wireless communication system can adopt multinomial technology to improve the message capacity of system, such as the Turbo coding techniques etc.Mobile subscriber in the wireless communication system may be distributed in the different location in the sub-district, distance between user and the base station has nothing in common with each other, because wireless fading channel makes that the maximum data transmission rate that different user can normally receive in a sub-district also is different.Usually, satisfying under the prerequisite of needed transmission error rates, the maximum data transmission rate that most of user can realize is more or less the same basically.In addition, some user's channel condition is fine, therefore can realize very high message transmission rate; Another part user's channel condition is then abominable relatively, and therefore the message transmission rate that can reach is also lower.The stand-by period of the communication user by dwindling two-forty can obviously be improved capacity, yet may have the restriction of the ratio of maximum latency and minimum latency in the reality.
Based on above analysis, the method that the business time-slot structure of existing employing equal time length is transmitted, more suitable for the speech business that real-time is had relatively high expectations; But professional for data, then can not utilize data service can realize optimization than long characteristics time of delay well to frequency spectrum resource.In addition, in present transmission method, each time slot all is an absolute construction, and each time slot all is provided with independent pilot tone, and this structure also is not suitable for the realization of high-speed data service.At first for the mobile subscriber of static or low-speed motion,, therefore in a such subframe, distribute a plurality of time slots simultaneously must for the client of high-speed data service because high speed data transfers need distribute more time resource to realize; Because the pilot tone of each time slot all can not discharge and be used for business data transmission, thereby has caused the waste of time resource in fact, is unfavorable for the realization of high speed data transfer.And for the client of high-speed mobile, pilot tone is carried out channel estimating in the middle of adopting, and may cause again when user's high-speed mobile and can not normally receive data.
Summary of the invention
The object of the present invention is to provide a kind ofly, use this method can realize the optimization of system spectral resources, reduce the waste of time resource efficiently based on the wireless communications method of time division duplex.
For achieving the above object, the wireless communications method based on time division duplex provided by the invention comprises:
(1) divides the time period that is used in data uplink emission and downlink in interface time frame aloft;
(2) in the time period of up emission, divide to be used in the uplink synchronous time slot of realizing uplink synchronous, the upload control time slot that is used to transmit up signaling, be used in the uplink service time slot of transmitting data service according to the upstream traffic branch;
(3) in the time period of downlink, divide and be used in the downlink synchronization slot of realizing down-going synchronous, the descending control time slot that is used to transmit downlink signaling, with a plurality of downlink business time slots that are used for transmitting data service, descending control time slot is arranged on before the downlink business time slot, distributes an ascending time slot between descending control time slot and downlink business time slot;
(4) different business time-slots is distributed to different user in the base station, in each time frame, the business that provides at user's radio propagation channel condition and for this user, the operation dispatching algorithm, the time slot of distributing to different user is optimized, and in descending control time slot, scheduling result and transmission parameter are sent to user receiving equipment, user receiving equipment receives and handles transmission parameter in the described ascending time slot of step (3), carries out the corresponding service Data Receiving then in downlink business time slot thereafter.
The described uplink synchronous time slot of step (2), upload control time slot and uplink service time slot are not overlapping mutually in time; The described downlink synchronization slot of step (3), descending control time slot, downlink business time slot are not overlapping mutually in time.
The number of the described uplink synchronous time slot of step (2) is according to user's translational speed or realize that synchronously required precision distributes, if the number of uplink synchronous time slot is a plurality of, then these a plurality of uplink synchronous time slots distribute according to constant duration and are provided with.
The number of the described downlink synchronization slot of step (3) is according to user's translational speed or realize that synchronously required precision distributes, if the number of downlink synchronization slot is a plurality of, then these a plurality of downlink synchronization slots distribute according to constant duration and are provided with.
The described branch of step (2) is used in the upload control time slot of the up signaling of transmission, and for distributing more than one upload control time slot, described upload control time slot partly is used to transmit low-speed data service.
The described branch of step (3) is used in the descending control time slot of transmission downlink signaling, and for distributing more than one descending control time slot, described descending control time slot partly is used to transmit low-speed data service.
The distribution of the maximum data transfer rate that the described downlink business time slots of step (3) length can realize according to the user or the traffic assignments that is provided, above-mentioned business of distributing is the service quality or the type of service of agreement.
Described method also comprises:
The emission pilot signal realizes channel estimating in each downlink business time slot.
Described channel estimating realizes by distribute a fixing spreading code emission pilot signal in whole time slot.
Described emission pilot signal adopts the pilot signal of a fixing symbol for emission.
Described emission pilot signal adopts the pilot signal of the symbol sebolic addressing of agreement for emission.
Described method also comprises: between different downlink business time slots emission and the emission of downlink business time slot mutually independently pilot signal carry out channel estimating.
Described method also comprises:
Uplink and downlink shooting sequence in a time frame is followed successively by downlink, up emission, the emission of downlink business time slot; Wherein up transmission time slot distributes according to the principle of distributing the short as far as possible time period on the basis of satisfying downlink signaling reception primary condition; Described downlink signaling receives primary condition and comprises that receiving equipment can in time obtain the transport format information of a high-speed data transmission process.
Step (3) is described distributes an ascending time slot between descending control time slot and downlink business time slot, estimate the ascending time slot of required shortest time for all transmission parameters of subscriber equipmenies realization or set of transmission parameters for distributing a time span.
Step (3) is described distributes an ascending time slot between descending control time slot and downlink business time slot, also can be and distribute a time span to realize a transmission parameter or a set of transmission parameters estimation, and finish the up signaling transmission ascending time slot of required shortest time for all subscriber equipmenies.
Step (3) is described distributes an ascending time slot between descending control time slot and downlink business time slot, also can be and distribute a time span to realize a transmission parameter or a set of transmission parameters estimation for all subscriber equipmenies, and finish up signaling transmission, and finish the uplink traffic transmission ascending time slot of required shortest time.
From the above, the present invention adopts the duplex mode of time division duplex as air interface.The frequency spectrum of TDD only needs a frequency range, and the ratio of its uplink and downlink can be carried out flexible configuration by the up-downgoing switching point, therefore can more effectively support as asymmetrical data services such as Internet browse.
On time slot was arranged, the present invention had disposed control time slot and business time-slot, respectively command transmitting signal and business datum signal.Because signaling need guarantee control information is in time sent to the recipient, so the technology such as the requirement height of real-time aspect than the transmission of business datum, so the control of needs employing power that are transmitted in of signaling.Emission will influence efficient each other in the time of signaling and data, and then reduce power system capacity.Therefore the present invention adopts the mode that the signaling transmission is separated with data traffic transmission, can effectively improve the efficiency of transmission in the wireless fading channel environment.
Among the present invention, described downlink business time slot has a plurality of.For the traditional second generation mobile communication system that with voice is main business, because the real-time of voice service requires and relatively stable service traffics feature, no matter be descending or ascending time slot, generally all be designed to each time slot equal in length in time.The present invention considers the air interface of wireless system is carried out towards the optimization of asymmetric data business, characteristics according to business burst and non real-time, and the difference of the subscriber channel condition of the interior different location of cellular cell, from improving chnnel coding efficient, improving the power system capacity equal angles, each downlink business time slot configuration is become to occupy the not isometric time period, the user high for the good or desired service quality of channel condition distributes long business time-slot, perhaps further distribute a plurality of time slots service data transmission simultaneously, to realize the demand of different business.Aspect the distribution of business time-slot, this method adopts the mode of TDMA that the data business is optimized, and each business time-slot can only be distributed to a user.The distribution of uplink service time slot can be with reference to the distribution method of downlink business time slot, also can be according to the practical business situation, uplink service merged in the upload control time slot launch, thereby also divide the transmission that is used in downlink business with the uplink service time interval resource, satisfy the requirement of different up-downgoing pro rates.
For the situation of high-speed mobile user or long period frame configuration, the present invention adopts the smooth access that distributes a plurality of synchronization slots and a plurality of control time slot method to guarantee the highspeed user, synchronous maintenance and the timely transmission of controlling signaling.At the pilot frequency sequence design aspect, in the existing TD-SCDMA system, each downlink business time slot all has own independent middle pilot code, is used to finish the channel estimating of Traffic Channel.This set is for having the user of a plurality of code division multiplexings more beneficial in the time slot.Consider the characteristics of data traffic transmission, unique user may need to distribute a plurality of so isometric slot transmission data services.Optimization method of the present invention for this reason is: under the low speed situation of movement, adopted independently one or more public guide frequency periods, the emission of pilot tone separates with the scheduling of data service, thereby can avoid being used for the waste of the resource of pilot transmission.In addition, under the situation that has a plurality of public guide frequency emissions, single business time-slot also can utilize adjacent a plurality of public guide frequencies to carry out channel estimating more accurately.Under the high-speed mobile situation, the present invention then adopts the continuous pilot method for transmitting, when avoiding adopting the centre pilot tone, owing to the pairing channel of partial service data can only obtain by indirect channel estimation methods, and causes frequent situation about taking defeat.Public guide frequency and continuous pilot can be designed as the same symbol emission of employing in whole time slot, also can be designed as fixing random mark, and what the continuous pilot of realization different districts was disturbed each other reduces.
Adopt the time division duplex technology to realize transmitting and receiving of uplink and downlink respectively by the method for dividing different time sections.Therefore, the base station time can not receive the up of Any user and transmits carrying out the downlink data emission.Be that a user distributes a descending control time slot to be used for transmitting downstream control signaling separately, will cause the waste of resource inevitably.The present invention is arranged on and adopts CDMA technology to a plurality of users emission control simultaneously signaling, to prevent the generation of above-mentioned wasting of resources phenomenon in the same control time slot.As previously mentioned, it is the transmission that different user distribution service time slot carries out data service that this method adopts the TDMA technology, simultaneously make that to a plurality of user's emission control signalings the business time-slot of certain customers is elongated with the time interval between the corresponding control time slot, this will influence the accuracy of channel measurement, and and then influence the performance that signal receives.Owing to know that at the emission square tube recipient prepares to need the recipient to carry out some preparations after the reception, therefore the present invention has adopted and arranged the upload control time slot method between descending control time slot and downlink business time slot, when guaranteeing that the recipient has time enough to prepare to receive, the resource that also can employ one's time to the best advantage is carried out the transmission of signal.The design principle of upload control time slot is under the prerequisite of the time requirement that the descending reception of As soon as possible Promising Policy is prepared, and shortens the time interval between down channel measurement and the downlink service data transmission as far as possible, improves the efficient of transfer of data.
From the above, adopt method of the present invention to compare, can improve the throughput of system and improve spectrum efficiency, cut operating costs with the existing communication means that is mainly speech business optimization.
Description of drawings
Fig. 1 is the embodiment flow chart of the inventive method;
Fig. 2 is the time frame structure figure that the described embodiment of Fig. 1 adopts;
Fig. 3 is the time frame structure figure that another embodiment of the present invention adopts.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the embodiment flow chart of the inventive method.The present invention at first will carry out the division of the data structure in the data transmission period frame, utilizes this data structure to carry out the transmission of business datum then.Specifically, in step 1, divide the time period that is used in data uplink emission and downlink in interface time frame aloft; The purpose of this step is according to the uplink and downlink business features, realizes meeting the uplink and downlink ratio setting of business data transmission reality.Owing in the uplink and downlink transmission course of business datum, need to wait synchronously control, therefore step 2 is in the time period of up emission, divide and be used in the uplink synchronous time slot of realizing uplink synchronous, the upload control time slot that is used to transmit up signaling, be used in the uplink service time slot of transmitting data service according to the upstream traffic branch, in practice, if because the up-downgoing asymmetric case is very serious, upstream traffic is seldom the time, uplink service and signaling transmission can be passed through code division multiplexing in a period of time, at this moment can be regardless of and mix industry affair time slot.In this example, described uplink synchronous time slot, upload control time slot and uplink service time slot are not overlapping mutually in time; The number of described uplink synchronous time slot is according to user's translational speed or realize that synchronously required precision distributes a synchronization slot to realize synchronously, also can distribute a plurality of synchronization slots to be used for realizing synchronously in the reality, if the number of uplink synchronous time slot is a plurality of, then these a plurality of uplink synchronous time slots are provided with according to the principle distribution of constant duration distribution as far as possible in time, certainly said here " constant duration " is not accurate, is meant that the time interval roughly equates; Described branch is used in the upload control time slot of the up signaling of transmission, for distributing a upload control time slot, also can distribute a plurality ofly in the reality, and the time slot of upload control described in this example is used for the hop low-speed data service, can certainly.
Above-mentioned uplink and downlink shooting sequence in a time frame is followed successively by downlink, up emission, the emission of downlink business time slot; Wherein up transmission time slot distributes according to the principle of distributing the short as far as possible time period on the basis of satisfying downlink signaling reception primary condition; Described downlink signaling receives primary condition and comprises that receiving equipment can in time obtain the transport format information of a high-speed data transmission process.
In step 4, different business time-slots is distributed to different user in the base station, during concrete the distribution at user's radio propagation channel situation and be the situation of the business that this user provided, give different users with the downlink business time slot allocation of different numbers, also can give different users with the downlink business time slot allocation of different time length or different numbers, wherein can be the service quality of agreement, or institute provide the type of business for service conditions that the user provided.Simultaneously, in each time frame, the business that provides at user's radio propagation channel condition and for this user, the operation dispatching algorithm, the time slot of distributing to different user is optimized, and in descending control time slot, scheduling result and transmission parameter being sent to user receiving equipment, user receiving equipment receives and handles transmission parameter in the described ascending time slot of step 3.
Based on above-mentioned steps, when carrying out business data transmission, the base station sends to user service data in step 5, and the user utilizes the reception of carrying out the corresponding service data in the downlink business time slot.
In the concrete enforcement of the invention described above, channel estimating is achieved in that the emission pilot signal realizes channel estimating in each downlink business time slot.
Need explanation, above-mentioned channel estimating also can realize by distribute a fixing spreading code emission pilot signal in whole time slot.Described emission pilot signal is the pilot signal of a fixing symbol of emission employing, also can adopt the pilot signal of the symbol sebolic addressing of agreement for emission.
Above-mentioned channel estimating can also realize like this: between different downlink business time slots emission and the emission of downlink business time slot mutually independently pilot signal carry out channel estimating.
Fig. 2 is the time frame structure figure that the described embodiment of Fig. 1 adopts.Time frame shown in the figure has adopted the configuration of the 5ms subframe of TD-SCDMA.Do not distribute the uplink service time slot in this time frame, the emission of upstream data service adopts the technology of CDMA and up signaling to share second time slot (TS1).First time slot (TS0) is assigned as descending control time slot, is exclusively used in the emission control signaling, and synchronization slot then adopts the same setting of TD-SCDMA.The downlink business time slot then has three, is respectively: TS2, TS3, TS4.Three time slots are unequal on time span, thus the optimization that can carry out data service according to the channel condition situation and the desired service quality of different user in the sub-district as much as possible.In time frame shown in Figure 2, two descending public guide frequency time slots have been distributed.Frequency pilot sign can be that different districts adopts fixing different time series; Or same symbol, the pilot signal of different districts multiply by different scramblers.Frequency pilot sign also can adopt the method to set up of the middle pilot tone of TD-SCDMA.If basic sequence [a
0, a
1..., a
P-1] expression, P is the length of sequence, and the length of pilot transmission signal is made as M, M 〉=P.Then the pilot transmission signal of first sub-district can be [a
0, a
1..., a
P-1..., a
M mod P], wherein, mod is complementation.The pilot transmission signal of second adjacent sub-district then can be set to [a
N, a
N+1..., a
P-1..., a
M+N mod P], that is to say, differ N chip with the pilot transmission signal phase of first sub-district.The selection rule of N is: N chip period must be greater than the sub-district maximum delay expansion of twice, and for example, when the two footpath signal maximums that receive as user in the sub-district differed 6 chip period, choosing of N must be greater than 6 * 2=12 chip.
Public guide frequency at Fig. 2 is provided with down, and the longest business time-slot TS3 can select two public guide frequencies that channel estimating is provided simultaneously.The receiving equipment that is assigned to the user of TS3 can select any one public guide frequency to do channel estimating according to the ability of equipment; Also can the channel estimating that two public guide frequencies calculate be averaged, as the channel estimating of signal reception; Also two channel estimation results can be used separately as the channel estimating of preceding half section and second half section business datum; Also can obtain the indirect Estimation numerical value of business datum institute respective channels according to two channel estimation results by methods such as interpolation calculation.The employing of said method can provide the signal of different performance to receive for the receiving equipment with various computing ability.In being provided with of Fig. 2, TS1 can adopt the time span identical with TD-SCDMA, i.e. 0.675ms, and uplink service is also launched in this time slot.Under this configuration, system can provide the downlink service of flank speed for the user.Transmission course according to this configuration is: user receiving equipment is in the measurement result of the up send channel of TS1; Each business time-slot is distributed according to this measurement result and other known or estimate information and executing dispatching algorithms in the base station; The base station receives parameters needed with scheduling result and user and is transmitted to the user at the TS0 of next time frame; User's receiving scheduling result and parameter, the reception of the line data business of going forward side by side.For user receiving equipment, just can carry out the aerial demodulation of signal as long as demodulate the modulation parameter of business datum emission; Simultaneously, because the transmission parameter of TS3 and TS4 has the sufficient time to handle, so the time span setting of TS1 only is subjected to the restriction of the transmission parameter demodulation time of TS2, and promptly the time span of TS1 must be greater than the needed time of demodulation TS2 transmission parameter.Under this restriction, the user can carry out the reception of business datum at the latest in second time frame that channel quality measurements reports, and between time delay can shorten as far as possible, thereby improved the success rate and the efficient of transmission effectively.
Fig. 3 is the time frame structure figure that another embodiment of the present invention adopts.In this embodiment, public guide frequency is replaced by continuous pilot.Adopt this continuous pilot setting, the emission of each business time-slot can applying intelligent antenna etc. technology, and the pairing channel of each business datum can obtain by the method for direct estimation, needn't use the indirect estimation methods such as interpolation of public guide frequency under being provided with, therefore help providing the data service service the high-speed mobile user.The continuous pilot symbol can adopt identical symbol, such as the symbol of complete " 1 ".
Claims (16)
1, a kind of wireless communications method based on time division duplex comprises:
(1) divides the time period that is used in data uplink emission and downlink in interface time frame aloft;
(2) in the time period of up emission, divide to be used in the uplink synchronous time slot of realizing uplink synchronous, the upload control time slot that is used to transmit up signaling, be used in the uplink service time slot of transmitting data service according to the upstream traffic branch;
(3) in the time period of downlink, divide and be used in the downlink synchronization slot of realizing down-going synchronous, the descending control time slot that is used to transmit downlink signaling, with a plurality of downlink business time slots that are used for transmitting data service, descending control time slot is arranged on before the downlink business time slot, distributes an ascending time slot between descending control time slot and downlink business time slot;
(4) different business time-slots is distributed to different user in the base station, in each time frame, the business that provides at user's radio propagation channel condition and for this user, the operation dispatching algorithm, the time slot of distributing to different user is optimized, and in descending control time slot, scheduling result and transmission parameter are sent to user receiving equipment, user receiving equipment receives and handles transmission parameter in the described ascending time slot of step (3), carries out the corresponding service Data Receiving then in downlink business time slot thereafter.
2, the wireless communications method based on time division duplex according to claim 1 is characterized in that: the described uplink synchronous time slot of step (2), upload control time slot and uplink service time slot are not overlapping mutually in time; The described downlink synchronization slot of step (3), descending control time slot, downlink business time slot are not overlapping mutually in time.
3, the wireless communications method based on time division duplex according to claim 2, it is characterized in that: the number of the described uplink synchronous time slot of step (2) is according to user's translational speed or realize that synchronously required precision distributes, if the number of uplink synchronous time slot is a plurality of, then these a plurality of uplink synchronous time slots distribute according to constant duration and are provided with.
4, the wireless communications method based on time division duplex according to claim 3, it is characterized in that: the number of the described downlink synchronization slot of step (3) is according to user's translational speed or realize that synchronously required precision distributes, if the number of downlink synchronization slot is a plurality of, then these a plurality of downlink synchronization slots distribute according to constant duration and are provided with.
5, the wireless communications method based on time division duplex according to claim 4, it is characterized in that: the described branch of step (2) is used in the upload control time slot of the up signaling of transmission, for distributing more than one upload control time slot, described upload control time slot partly is used to transmit low-speed data service.
6, the wireless communications method based on time division duplex according to claim 5, it is characterized in that: the described branch of step (3) is used in the descending control time slot of transmission downlink signaling, for distributing more than one descending control time slot, described descending control time slot partly is used to transmit low-speed data service.
7, the wireless communications method based on time division duplex according to claim 6, it is characterized in that: the distribution of the maximum data transfer rate that the described a plurality of downlink business time slots length of step (3) can realize according to the user or the traffic assignments that is provided, above-mentioned business of distributing is the service quality or the type of service of agreement.
8, the wireless communications method based on time division duplex according to claim 7, it is characterized in that described method also comprises: in the full-time crack of each downlink business time slot, the pilot signal that emission adopts a fixing spreading code to carry out spread spectrum realizes channel estimating.
9, the wireless communications method based on time division duplex according to claim 8 is characterized in that: described channel estimating realizes by distribute a fixing spreading code emission pilot signal in whole time slot.
10, the wireless communications method based on time division duplex according to claim 7 is characterized in that described method also comprises: between different downlink business time slots emission and the emission of downlink business time slot mutually independently pilot signal carry out channel estimating.
11, the wireless communications method based on time division duplex according to claim 9 is characterized in that: described emission pilot signal adopts the pilot signal of a fixing symbol for emission.
12, the wireless communications method based on time division duplex according to claim 9 is characterized in that: described emission pilot signal adopts the pilot signal of the symbol sebolic addressing of agreement for emission.
13, according to claim 10,11 or 12 described wireless communications methods based on time division duplex, it is characterized in that: step (3) is described distributes an ascending time slot between descending control time slot and downlink business time slot, and wherein up transmission time slot receives on the basis of primary condition and distributes according to the principle of distributing the short as far as possible time period satisfying downlink signaling; Described downlink signaling receives primary condition and comprises that receiving equipment can in time obtain the transport format information of a high-speed data transmission process.
14, the wireless communications method based on time division duplex according to claim 13, it is characterized in that step (3) is described distributes an ascending time slot between descending control time slot and downlink business time slot, estimate the ascending time slot of required shortest time for distributing a time span can realize a transmission parameter or set of transmission parameters for all subscriber equipmenies.
15, the wireless communications method based on time division duplex according to claim 13, it is characterized in that step (3) is described distributes an ascending time slot between descending control time slot and downlink business time slot, estimate for distributing a time span to realize a transmission parameter or a set of transmission parameters, and finish the up signaling transmission ascending time slot of required shortest time for all subscriber equipmenies.
16, the wireless communications method based on time division duplex according to claim 13, it is characterized in that step (3) is described distributes an ascending time slot between descending control time slot and downlink business time slot, estimate for distributing a time span to realize a transmission parameter or a set of transmission parameters for all subscriber equipmenies, and finish up signaling transmission, and finish the uplink traffic transmission ascending time slot of required shortest time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02117427 CN1194563C (en) | 2002-04-19 | 2002-04-19 | Radio communication method based on time division diplexing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02117427 CN1194563C (en) | 2002-04-19 | 2002-04-19 | Radio communication method based on time division diplexing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1452420A true CN1452420A (en) | 2003-10-29 |
| CN1194563C CN1194563C (en) | 2005-03-23 |
Family
ID=29221119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02117427 Expired - Fee Related CN1194563C (en) | 2002-04-19 | 2002-04-19 | Radio communication method based on time division diplexing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1194563C (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009062388A1 (en) * | 2007-10-23 | 2009-05-22 | China Mobile Communications Corporation | Method and apparatus for transmitting data information |
| CN101128029B (en) * | 2006-08-18 | 2010-08-18 | 北京信威通信技术股份有限公司 | A terminal access method in TDD communication system |
| CN101162981B (en) * | 2006-10-12 | 2010-09-08 | 中兴通讯股份有限公司 | Frame structure generating method of TDD communication system |
| CN1909533B (en) * | 2005-08-05 | 2010-10-06 | 中兴通讯股份有限公司 | Frame creating method based on crossing frequency division multiplexing in time-division duplex mode |
| CN1917407B (en) * | 2005-08-17 | 2011-07-20 | 展讯通信（上海）有限公司 | TD SCDMA system communication method |
| CN101364972B (en) * | 2007-08-07 | 2011-08-17 | 鼎桥通信技术有限公司 | Radio frame transmission method, system , base station and user equipment |
| CN101299821B (en) * | 2007-04-30 | 2011-11-30 | 中兴通讯股份有限公司 | Method for scheduling upstream service of TDD communication system |
| CN101702965B (en) * | 2007-03-10 | 2012-03-14 | 霖那控股私人有限公司 | Optimizing downlink throughput with user cooperation and scheduling in adaptive cellular networks |
| CN101150389B (en) * | 2006-09-20 | 2012-05-23 | 华为技术有限公司 | Time division duplex radio communication system and its signal transmission method |
| CN101114874B (en) * | 2006-07-28 | 2012-07-04 | 中兴通讯股份有限公司 | Synchronous signal transmitting method of TDD system |
| CN101414849B (en) * | 2007-10-16 | 2012-08-08 | 电信科学技术研究院 | Method and apparatus for implementing ascending frequency-hopping transmission in TDD system |
| CN101431362B (en) * | 2007-11-08 | 2012-10-03 | 电信科学技术研究院 | Subframe distribution method and apparatus for TDD system |
| CN101400072B (en) * | 2007-09-30 | 2012-12-12 | 电信科学技术研究院 | Transmission method, system and apparatus for enhancing coverage capability |
| CN101159485B (en) * | 2007-10-28 | 2013-05-08 | 中兴通讯股份有限公司 | TDD system signal transmission method and frame structure |
| CN101159484B (en) * | 2007-10-28 | 2013-06-12 | 中兴通讯股份有限公司 | TDD system signal transmitting method and frame structure |
| CN103298064A (en) * | 2012-03-02 | 2013-09-11 | 华为终端有限公司 | Downlink data transmission method, related device and communication system |
| CN103546947A (en) * | 2012-07-17 | 2014-01-29 | 福建先创通信有限公司 | Downlink control signal transmitting method for TDMA mobile communication systems and application thereof |
| CN101606347B (en) * | 2007-04-11 | 2014-05-28 | Lg电子株式会社 | Method of transmitting scheduling information in tdd system |
| CN105284151A (en) * | 2013-06-14 | 2016-01-27 | 株式会社Ntt都科摩 | Wireless base station, user terminal, and wireless communication method |
-
2002
- 2002-04-19 CN CN 02117427 patent/CN1194563C/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1909533B (en) * | 2005-08-05 | 2010-10-06 | 中兴通讯股份有限公司 | Frame creating method based on crossing frequency division multiplexing in time-division duplex mode |
| CN1917407B (en) * | 2005-08-17 | 2011-07-20 | 展讯通信（上海）有限公司 | TD SCDMA system communication method |
| CN101114874B (en) * | 2006-07-28 | 2012-07-04 | 中兴通讯股份有限公司 | Synchronous signal transmitting method of TDD system |
| CN101128029B (en) * | 2006-08-18 | 2010-08-18 | 北京信威通信技术股份有限公司 | A terminal access method in TDD communication system |
| CN101150389B (en) * | 2006-09-20 | 2012-05-23 | 华为技术有限公司 | Time division duplex radio communication system and its signal transmission method |
| CN101162981B (en) * | 2006-10-12 | 2010-09-08 | 中兴通讯股份有限公司 | Frame structure generating method of TDD communication system |
| CN101702965B (en) * | 2007-03-10 | 2012-03-14 | 霖那控股私人有限公司 | Optimizing downlink throughput with user cooperation and scheduling in adaptive cellular networks |
| CN101606347B (en) * | 2007-04-11 | 2014-05-28 | Lg电子株式会社 | Method of transmitting scheduling information in tdd system |
| US9474060B2 (en) | 2007-04-11 | 2016-10-18 | Lg Electronics Inc. | Method of transmitting scheduling information in TDD system |
| US9071400B2 (en) | 2007-04-11 | 2015-06-30 | Lg Electronics Inc. | Method of transmitting scheduling information in TDD system |
| CN101299821B (en) * | 2007-04-30 | 2011-11-30 | 中兴通讯股份有限公司 | Method for scheduling upstream service of TDD communication system |
| CN101364972B (en) * | 2007-08-07 | 2011-08-17 | 鼎桥通信技术有限公司 | Radio frame transmission method, system , base station and user equipment |
| CN101400072B (en) * | 2007-09-30 | 2012-12-12 | 电信科学技术研究院 | Transmission method, system and apparatus for enhancing coverage capability |
| CN101414849B (en) * | 2007-10-16 | 2012-08-08 | 电信科学技术研究院 | Method and apparatus for implementing ascending frequency-hopping transmission in TDD system |
| WO2009062388A1 (en) * | 2007-10-23 | 2009-05-22 | China Mobile Communications Corporation | Method and apparatus for transmitting data information |
| CN101159484B (en) * | 2007-10-28 | 2013-06-12 | 中兴通讯股份有限公司 | TDD system signal transmitting method and frame structure |
| CN101159485B (en) * | 2007-10-28 | 2013-05-08 | 中兴通讯股份有限公司 | TDD system signal transmission method and frame structure |
| CN101431362B (en) * | 2007-11-08 | 2012-10-03 | 电信科学技术研究院 | Subframe distribution method and apparatus for TDD system |
| CN103298064A (en) * | 2012-03-02 | 2013-09-11 | 华为终端有限公司 | Downlink data transmission method, related device and communication system |
| CN103546947A (en) * | 2012-07-17 | 2014-01-29 | 福建先创通信有限公司 | Downlink control signal transmitting method for TDMA mobile communication systems and application thereof |
| CN105284151A (en) * | 2013-06-14 | 2016-01-27 | 株式会社Ntt都科摩 | Wireless base station, user terminal, and wireless communication method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1194563C (en) | 2005-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1194563C (en) | Radio communication method based on time division diplexing | |
| CN1310564C (en) | Method and apparatus for increased information transfer in communication system | |
| CN100566232C (en) | The method of supporting changable cover by time division duplex system | |
| US8971259B2 (en) | Packet aware scheduler in wireless communication systems | |
| JP4782829B2 (en) | Communication resource management | |
| JP4991841B2 (en) | Method and apparatus for using tones in a wireless communication system | |
| KR100886549B1 (en) | Apparatus and method to combat inter-antenna interference in a orthogonal frequency divisiong multiplexing access system | |
| US20050002323A1 (en) | Cellular network system and method | |
| CN1274098C (en) | Transmission method for high speed grouping busihess data based on TDD | |
| US20070115862A1 (en) | Channel mode converting method of a wireless portable internet system | |
| KR20070056865A (en) | Apparatus and method for resource allocation in uplink of a broadband wireless access system | |
| JP4912878B2 (en) | OFDMA system and method | |
| JP4981908B2 (en) | Uplink timing control signal | |
| CN101127748A (en) | Transmission method and device for uplink synchronization command word in OFDM mobile communication system | |
| EP2018749A2 (en) | Multi-carrier allocation using reciprocal nature of uplink and downlink in time division duplex to use just uplink pilots | |
| EP1492248B1 (en) | A method about high speed transmitting data service based tdd mode | |
| JP2009177826A (en) | Scheduler and method for scheduling data for communication between node station and a plurality of wireless terminals | |
| CN1097986C (en) | Mobile station communication device,base station communication device and radio communication method | |
| CN1536904A (en) | Method for scheduling up service resource | |
| CN101087469B (en) | A method for realizing random access of user device | |
| US8121143B2 (en) | Scheduling method for broadband wireless access system | |
| CN1956358B (en) | Cell synchronous method based on access leading | |
| CN101399587B (en) | Base station transmission method and device in communication system | |
| CN101686566B (en) | Methods for allocating downlink sub-frames, transmitting information and acquiring information of WiMAX evolution system | |
| CN1143585C (en) | Process and base station for transmitting organisation information in radiocommunication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050323 Termination date: 20200419 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |