CN1411161A - TD-CDMA transmission system - Google Patents

TD-CDMA transmission system Download PDF

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Publication number
CN1411161A
CN1411161A CN 02144416 CN02144416A CN1411161A CN 1411161 A CN1411161 A CN 1411161A CN 02144416 CN02144416 CN 02144416 CN 02144416 A CN02144416 A CN 02144416A CN 1411161 A CN1411161 A CN 1411161A
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CN
China
Prior art keywords
time slot
transmission system
radio frame
cdma
individual
Prior art date
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Pending
Application number
CN 02144416
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Chinese (zh)
Inventor
克里斯托弗·尤舍
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Siemens AG
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Siemens AG
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Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of CN1411161A publication Critical patent/CN1411161A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2618—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid code-time division multiple access [CDMA-TDMA]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention relate to a TD-CDMA transmission system, especially relates to a TD-SCDMA transmission system used for performing wireless remote communication between mobile and/or immobile transceivers via a wireless interface, wherein, the wireless interface includes a plurality of physical channels in uplinks and downlinks in the remote communication, each channel comprises a superframe containing N[RF] radio frames, each radio frame comprises N[TS] time slots, and each time slot includes N[RU] usable resource units. In order to provide a high speed data transmission in an easy and inexpensive manner, especially, with this manner, i.e., N[RF] resource units of the time slots from different radio frames are combined in one tiem slot, distributed to the N[RU] resource units of the time slot and transmitted in the time slot without using a high cost signal processor in receivers of the mobile and/or immobile transceivers, wherein N[RF] is less than or equal to N[Ru].

Description

The TD-CDMA Time Division-Code Division Multiple Access transmission system
Technical field
The present invention relates to a kind of code division multiple access (CDMA) transmission system that is used between that move and/or static transceiver, carrying out wireless telecommunication by wave point, wherein, wave point has a plurality of physical channels in the up link of telecommunication and down link, each channel comprises a superframe (superframe), and a superframe comprises N RFIndividual radio frame, a radio frame comprises N TSIndividual time slot, a time slot has N RUIndividual available resource units.
Background technology
In the prior art, known have many method for network access, the timing of these methods control user access networks.According to different application, people use different information transmission mediums.In radio communication, various information transferring methods and system are used to the multiple utilization to information transmission medium, for example, FDMA (frequency division multiple access), TDMA (time division multiple access) and/or CDMA (code division multiple access) transmission system, for example, according to radio standard, as DECT (strengthening the digital cord-less telecommunication), GSM (global system for mobile communications), UMTS (general mobile telecommunication system) etc.
At the mobile wireless electrical domain, the UMTS transmission system is based on TD-CDMA (TD-CDMA Time Division-Code Division Multiple Access) technology with other.In the up link and down link of telecommunication, the wave point of this transmission system is based on so-called three-decker, comprises superframe, radio frame and time slot, and transceiver can detect the Resource Unit in the time slot.
Each superframe comprises N RFIndividual radio frame, and radio frame comprises N TSIndividual time slot, the Resource Unit in the time slot must be detected by transceiver.Fig. 1 shows from an example of the frame structure of the TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) of the angle of the base station that is used as transceiver.Shown in Fig. 1, on different carrier waves, each radio frame RF comprises seven time slot TS (from TS 0 to TS 6), and each time slot comprises 16 Resource Units, and Resource Unit can selectively be detected by the mode of the CDMA code among each radio frame and the time slot TS.Fig. 2 shows first three radio frame (RF) of the so-called superframe in each carrier wave.The TD-CDMA transmission system needs so-called joint detection receiver in mobile and/or static transceiver.
In associated detecting method, even be not that all Resource Unit RU of time slot are used for transfer of data, promptly current being used, all Resource Unit RU of each time slot must be detected in a time slot TS, is used for further processing.For detecting a time slot, very high with the complexity that detects relevant signal processor, and, this complexity also will increase along with the growth of detected number of time slot being linear, so, even for the low data rate that will be transmitted, for example, only need also must obtain to be used to detect the signal processor performance of all Resource Unit RU with a Resource Unit RU.The shortcoming of this arrangement is exactly high-performance must be arranged but the also high signal processor of cost in mobile and/or static transceiver.
According to previous standardized TD-CDMA or TD-SCDMA standard, can not realize the receiver of TD-CDMA or TD-SCDMA with the signal processor of low performance, especially can not use than being used to detect each time slot has N RUThe lower signal processor of the desired signal processing performance of individual Resource Unit is realized.
So far, the TD-CDMA transmission system of previously known can not provide the transfer of data of high data rate in the mode of non-costliness, because especially, must use abundant high performance signal processor, detect a time slot in each radio frame, and the cost of sort processor is very high.
Summary of the invention
Consider this prior art, the present invention just is based on the purpose of improving the TD-CDMA transmission system, especially at the TD-SCDMA transmission system of the sort of type that begins to be mentioned, like this, this system just can realize the transfer of data of two-forty with the method for simple and non-costliness.
According to the present invention, described purpose is achieved in that promptly, from the nearly N of the time slot of different radio frames RFIndividual Resource Unit is combined in the time slot, is assigned to the nearly N of this time slot RUIndividual Resource Unit, and in this time slot, send N RFBe less than or equal to N RU
In the present invention, reach N RFResource Unit in the individual time slot is tied (bundle) and transmission in a time slot, is assigned to nearly N RUIndividual Resource Unit.In this process, by will being combined in the time slot from the Resource Unit of the time slot of different radio frame, the TD-CDMA transmission system has formed and has a kind ofly comprised two to N RFThe so-called long frame of individual radio frame comprises so-called binding time slot, and described binding time slot only need be sent out once in each long frame.According to the present invention, by introducing these so-called binding time slots, from reaching N RFThe Resource Unit of individual radio frame is bundled in the radio frame, and sends in this radio frame.
For detecting this binding time slot, that is, only need to be sent out once combination time slot for the radio frame of the every combination of so-called long frame, for each connection, nearly N can be arranged in the each detection of receiver end RUTime doubly, that is, only need 1/N RUThe signal processor performance, so, when the signal processor of original use remained unchanged, message transmission rate just can be increased to N RUDoubly.
In the advantageous embodiments of TD-CDMA transmission system according to the present invention, N RF, N TSAnd N RUAll equal 16.The Resource Unit of the identical time slot of different radio frame is advantageously combined.
In another advantageous embodiments of the present invention, 2,4 or 8 radio frames are advantageously made up, to form a so-called long frame.Radio frame can carry out various favourable combinations, like this, according to the needs of mobile and/or static receiver, can realize different message transmission rates.
Description of drawings
Hereinafter, will explain more details of the present invention, characteristics and advantage in further detail with reference to illustrative embodiment as shown in FIG., wherein:
Fig. 1 shows from the frame structure of the TD-SCDMA transmission system of the angle of static transceiver;
Fig. 2 shows from the minimum according to the TD-SCDMA transmission system of the angle of the mobile transceiver of Fig. 1 (prior art) and utilizes situation;
Fig. 3 shows the operation according to TD-SCDMA transmission system of the present invention.
Embodiment
Such as explanation, Fig. 1 shows under present condition from the frame structure of the TD-SCDMA of the angle of static transceiver.In a radio frame RF, Resource Unit RU can be assigned with, and can be assigned to one or more mobile transceivers.Time slot TS both can be used to the up link of telecommunication, also can be used to the down link of telecommunication.
Fig. 2 shows under present condition from the minimum of the TD-SCDMA transmission system of the angle of mobile transceiver and utilizes situation, at this moment, must detect the Resource Unit RU of each radio frame RF, for this reason, the signal processor performance, what must be designed to can be used in theory is used for detecting all Resource Units of this time slot.
Fig. 3 shows the basic operation of TD-SCDMA transmission system.In this example, two Resource Unit RU of continuous radio frame RF are bundled in each case in the radio frame and send.1 radio frame that has formed expansion like this has length 2 from radio frame 0 to radio frame.So-called binding time slot of first time slot in the radio frame of this expansion (TS 1) expression.Like this, in this case, each signal processor of mobile transceiver has been provided the time of twice, be used to detect the Resource Unit of the time slot TS 1 of 1 formed long frame from frame 0 to frame, like this, processor just only needs less disposal ability, perhaps, under the situation that signal handling capacity remains unchanged, message transmission rate can double.
Fig. 1 comprises seven time slots (TS0 is to TS 6) to the frame structure of the TD-SCDMA transmission system shown in Fig. 3, and nearly 16 (0 to 15) Resource Units are encoded by the CDMA mode.
Illustrative embodiment shown in the figure just is used to explain the present invention, rather than limitation of the present invention.

Claims (6)

1. a TD-CDMA Time Division-Code Division Multiple Access (TD-CDMA) transmission system, especially a kind of Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) transmission system that is used between mobile and/or static transceiver, carrying out wireless telecommunication by wave point, wherein, wave point has a plurality of physical channels in up link of communicating by letter and down link, each channel comprises a superframe, and a superframe comprises N RFIndividual radio frame, a radio frame comprises N TSIndividual time slot has N in the time slot RUIndividual available resource units is characterized in that:
Nearly N from the time slot of different radio frames RFIndividual Resource Unit is combined in the time slot, is assigned to the nearly N of this time slot RUIndividual Resource Unit, and in this time slot, send N RFBe less than or equal to N RU
2. TD-CDMA transmission system as claimed in claim 1 is characterized in that, the Resource Unit of continuous radio frame is combined in the radio frame and sends.
3. TD-CDMA transmission system as claimed in claim 1 or 2 is characterized in that, the identical time slot in the different radio frames is combined.
4. as each the described TD-CDMA transmission system in the claim 1 to 3, it is characterized in that the number N of radio frame RFEqual 16.
5. as each the described TD-CDMA transmission system in the claim 1 to 4, it is characterized in that the number N of time slot TSEqual 16.
6. as each the described TD-CDMA transmission system in the claim 1 to 5, it is characterized in that the number N of available resource units RUEqual 16.
CN 02144416 2001-09-28 2002-09-27 TD-CDMA transmission system Pending CN1411161A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001147899 DE10147899A1 (en) 2001-09-28 2001-09-28 Time division-code division multiple access transmission system assembles data transmission packets from time slices from different time frames in one time slice for transmission
DE10147899.2 2001-09-28

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CN1411161A true CN1411161A (en) 2003-04-16

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DE (1) DE10147899A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1299446C (en) * 2004-05-01 2007-02-07 中兴通讯股份有限公司 A method of frame synchronization for wireless interface of time division communication system
CN100362775C (en) * 2004-09-16 2008-01-16 华为技术有限公司 Transmission method for physical channel
CN100393018C (en) * 2006-02-21 2008-06-04 中兴通讯股份有限公司 Time division synchronous code division multiple access communication system combined rate and power regulating method
WO2008113274A1 (en) * 2007-03-16 2008-09-25 Da Tang Mobile Communications Equipment Co., Ltd. A method and device for transmitting mobile multi-media broadcasting service
CN1917407B (en) * 2005-08-17 2011-07-20 展讯通信（上海）有限公司 TD SCDMA system communication method
CN101558672B (en) * 2006-12-15 2013-01-02 索尼株式会社 Communication system, communication device and communication method, and computer program

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101087170B (en) * 2006-06-08 2012-04-18 上海原动力通信科技有限公司 Uplink communication method and system under time division duplex mode

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1299446C (en) * 2004-05-01 2007-02-07 中兴通讯股份有限公司 A method of frame synchronization for wireless interface of time division communication system
CN100362775C (en) * 2004-09-16 2008-01-16 华为技术有限公司 Transmission method for physical channel
CN1917407B (en) * 2005-08-17 2011-07-20 展讯通信（上海）有限公司 TD SCDMA system communication method
CN100393018C (en) * 2006-02-21 2008-06-04 中兴通讯股份有限公司 Time division synchronous code division multiple access communication system combined rate and power regulating method
CN101558672B (en) * 2006-12-15 2013-01-02 索尼株式会社 Communication system, communication device and communication method, and computer program
WO2008113274A1 (en) * 2007-03-16 2008-09-25 Da Tang Mobile Communications Equipment Co., Ltd. A method and device for transmitting mobile multi-media broadcasting service

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