CN1298580A - Common air interface for home telecommunications systems with wireless telecommunication based on code and time-multiplex - Google Patents

Abstract

According to the invention, the burst structure of the common air interface is adapted to the requirements in the home telephone telecommunications system for the uncoordinated operation in the paired (FDD-mode) or unpaired (TDD-mode) frequency band such that statements concerning the quality of the respective burst and, for example, criteria for the handover of a telecommunication connection, so called handover criteria are possible. To this end, the burst structure contains a first data field which is provided in the given sequence and which is provided for varying burst collision recognition (DF1SCD). Said burst structure also contains a first useful data block (NDB1), a training information sequence, the so called midamble, provided for channel estimation (TIS) and/or a synchronization field (SYF), a second useful data block (NDB2), a data field which is configured, for example, as a CRC field and which is provided for fault recognition (DFCRC), a second data field provided for varying burst collision recognition (DF2SCD) and a protection time zone (SZZ).

Description

Air interface with wireless ownership communication system based on code division multiple access and time division multiple access communication

The communication system that has in radio communication between mobile and/or the static tranmission/reception apparatus is the specific information system with the message transmission link between information source and information remittance, for example base station and movable part are used for information processing and message transmission as transmitting and receiving apparatus in these information sources and information are converged, and wherein

1) can upward or in two transmission directions (duplex) go up realization information processing and message transmission in a preferred transmission direction (single worker),

2) information processing mainly is digital,

3) on the basis of the various information transferring method that is used for the multiplexing FDMA of message transmission link (frequency division multiple access), TDMA (time division multiple access) and/or CDMA (code division multiple access), wirelessly realize message transmission through the long range communication link,-these methods strengthened (in the past: Europe) radio communication such as the DECT[numeral for example according to wireless transmission standards; Referring to: Berlin, Germany, the information technology electronics 42 in (1992) January/February, the first volume; 23 to 29 pages on " the dect standard structure " of U.Pilger is in conjunction with ETSI publication ETS 300175-1 ... the DECT publication of in October, 9,1992 and DECT forum, in February, 1997,1 to 16 page], GSM[group specialized mobile radio or Global Link mobile communication; Referring to: Berlin, Germany, (1991) June, information frequency spectrum 14, the 3 volumes; " principle of GSM standard-European digital mobile radio net " of A.Mann, put into practice in April, 1993 in conjunction with publication communication, " gsm wireless interface-element and the function " of P.Smolka, 17 to 24 pages by 137 to 152 pages], the UTMS[universal mobile telecommunications system; Referring to: (1): Berlin 45,1995, information technology electronics, the first phase, 10 to 14 pages and the second phase, 24 to 27 pages; " outline that is suitable for the CDMA mobile radio system with common detection of third generation mobile radio telecommunications " of P.Jung, B.Steiner; (2): Berlin 41,1991, information technology electronics, the 6th phase, 223 pages to 227 pages and 234 pages; " one of CDMA-is used for the suitable multiple access method frequency selection and the mobile radio channel time variation " of P.W.Baier, P.jung, A.Klein; (3): the IEICE of the basic principle of electronics, communication, computer science handles, in December, 1996, E79-A volume, the 12nd phase, 1930 to 1937 pages; " CDMA mythical and return reality " of P.W.Baier, P.jung; (4): IEEE personal communication, February nineteen ninety-five, 38 to 47 pages; A.Urie, M.Streeton, C.Mourot: " the senior TDMA mobile communication access system that is used for UMTS "; (5): communication practice, 5/1995,9 to 14 page; P.W.Baier: " the civilian part that the initial military technology of spread spectrum technique and CDMA-is obtained "; (6): IEEE personal communication, February nineteen ninety-five, 48 to 53 pages; P.G.Andermo, L.M.Ewerbring: " being used for the wireless access design of UMTS " based on CDMA; (7): ITG specialty report 124 (1993), Berlin, the ISDN 3-8007-1965-7 of offenbach:VDE publishing house, 67 to 75 pages; Dr.T.Zimmermann, Siemens AG: " use of CDMA in the mobile communication "; (8): communication report 16, (1993). the 1st phase, 38 to 41 pages; Dr.T.Ketseoglou, Siemens AG und Dr.T.zimmermann, Siemens AG: " the effective user capture-multiple access method CDMA of 3G (Third Generation) Moblie make air interface more flexible "; (9): radio is watched from a height or a distance 6/98:R.Sietmann " contention UMTS interface ", 76 to 81 pages] WACS or PACS, IS-54, IS-95, PHS, PDC or the like.[referring to: ieee communication magazine, January nineteen ninety-five, 50 to 57 pages; D.D.Falconer and other: " the time division multiple access method that is used for wireless personal communications "].

" information " is a upper notion, and it is represent content (message) not only, and represents physical representative (signal).Although the message of the same signal content of information-just identical-different signal forms may occur.Therefore for example can

(1) with the form of image,

(2) as talk about,

(3) as the word of being write

(4) as word or the image encrypted

Transmission is about the information of an object.

This is generally passed through continuously (simulation) characterization according to (1) ... (3) transmission means, however discrete signal (for example pulse, digital signal) in the basis transmission means of (4), produced usually.

Following Fig. 1 to 6 shows:

Fig. 1 " three-decker " of WCDMA/FDD air interface in " down link ",

Fig. 2 " three-decker " of WCDMA/FDD air interface in " up link ",

" three-decker " of Fig. 3 TDCDMA/TDD air interface,

Fig. 4 has the wireless sight according to the multiple application of channel of frequency division multiple access, time division multiple access, code division multiple access,

Theory structure of Fig. 5 as the base station of tranmission/reception apparatus formation,

The theory structure of the mobile radio station that one of Fig. 6 forms as tranmission/reception apparatus equally,

In UMTS sight (third generation mobile radio telecommunications or IMT2000), for example according to seal Brush product radio is watched from a height or a distance 6/98:R.Sietmann " contention UMTS interface ", and 76 to 81 pages, There are two sub-sights. In first sub-sight, the mobile wireless of the mutual coordination of approved Communication is based on WCDMA technology (WCDMA), resembles in GSM in the FDD mode (frequently Divide multiple access) operation, and in second sub-sight, unratified do not coordinate mutually mobile do not have Line communication resembles in DECT, in the FDD mode (frequently based on TD-CDMA technology (time division multiple acess) Divide multiple access) operation.

WCDMA/FDD operation for UMTS, according to printed matter ETSI STC SMG2 UMTS-L1, Tdoc SMG2 UMTS-L1 163/98: " the UTRA Physical layer is described the FDD part " Vers.0.3,1998-05-29, the air interface of communication system comprises respectively a plurality of physical channels on the uplink and downlink direction of communication, second physical channel of the physical data channel DPDCH of first physical channel of the used for physical control channel DPCCH of one of them so-called special use and a so-called special use, relate to one " three-decker ", comprise the long (T of 720ms_MZR=720ms) long (the T of multiple time frame (overtime frame) MZR, 10ms_FZR=10ms) time frame (radio time frame) ZR and the long (T of 0.625ms_ZS=0.625ms) time slot ZS, these are in Fig. 1 and 2 Describe. Multiple time frame MZR separately comprises for example 72 time frame ZR, and each time Frame ZR for example has again 16 time slot ZS1 ... ZS16. Each time slot ZS, ZS1 ... ZS16 (arteries and veins Punching string) about the first physical channel DPCCH have one be used for channel estimating with N_pilotThe leader PS, one of position be used for power control (service power control) with N_TPCThe TPC sequence TPCS of position and one be used for transformat explanation (control of traffic format channel) with N_TFCIThe TFCI sequence TFCIS of position is as burst structure, and has one with N about the second physical channel DPDCH_dataThe application data sequence NDS of position is as burst structure.

At " downlink " of the WCDMA/FDD of ETSI or ARIB system (communication lower Line direction; Wireless connections from the base station to the movement station) on-and Fig. 1-, first physical channel is [" specially The physical control channel (DPCCH) of annotating] and second the physical channel [" physical data channel of being absorbed in (DPDCH)] multiplex on the time, and at " the up-link " (up direction of communication; Wireless connections from the movement station to the base station) on-and Fig. 2-, carry out the I/Q multiplex, more than this The second physical channel DPDCH transmits the first physical channel DPCCH in worker's operation in the I channel In the Q channel, transmit.

For the operation of the TDCDMA/TDD of UMTS, according to printed matter TSG RAN WG1 (S1.21): " third generation partnership project (3GPP) " Vers.0.0.1,1999-01, The air interface of communication system communication the uplink and downlink direction on again based on this " three-layered node Structure ", comprise multiple time frame MZR, time frame ZR and time slot ZS are for whole physics letters The road, these are described in Fig. 3. When multiple time frame MZR separately for example comprises 72 again Between frame ZR, and each time frame ZR for example has 16 time slot ZS1 ... ZS16. Each the time Crack ZS, ZS1 ... ZS16 (train of pulse) or have first time slot knot according to ARIB suggestion Structure (burst structure) ZSS1 comprises one in order with N_data1The first application data sequence NDS1 of position, be used for channel estimating with N_PilotThe leader PS of position, be used for power control with N_TPCThe TPC sequence TPCS of position, be used for the transformat explanation with N_TFCIThe TFCI sequence TFCIS of position, second application data sequence NSD2 and one are with N_GuardThe position Protection time zone SZZ (protection period), perhaps suggestion has second time slot knot according to ETSI Structure (burst structure) ZSS2 comprises the first application data sequence NDS1, one in order One TFCI sequence TFCIS1, one are used for the mid portion sequence MIS of channel estimating, one the Two TFCI sequence TFCIS2, the second application data sequence NDS2 and protection time zone SZZ.

For example on the basis of gsm wireless sight, this wireless sight has for example two nothings to Fig. 4 Line honeycomb and the base station (base transceiver) that is arranged in wherein, wherein first base station BTS 1 (is sent out Penetrate device/receiver) omnidirectional " illuminates " first radio honeycomb FZ1, and second base station BTS 2 (is sent out Penetrate/receiving equipment) omnidirectional " illuminates " second radio honeycomb FZ2, and take Fig. 1 and 2 as Starting point shows a wireless sight, and it has according to frequency division multiple access/TDMA/CDMA The multiple application of channel, base station BTS 1, BTS2 join for wireless sight through one in this sight The air interface of putting by wireless unidirectional or two-way-up direction UL (uplink) and/ Or down direction DL (downlink)-communication is at corresponding transmission channel TRC (transmission channel) Upward with a plurality of movement station MS1 that are among radio honeycomb FZ1, the FZ2 ... MS5 (establish by transmitting/receiving Standby) connect or can connect. Base station BTS 1, BTS2 are in known manner (referring to GSM Communication system) be connected with a base station controller BSC (base station controller), it is controlled in the base station Bear frequency domination and relay function in the scope of system. Base station controller BSC is at warp aspect self The communication network of crossing a moving exchanging center MSC (mobile switching centre) and being responsible for is PSTN for example (open switched communication network) connects. Moving exchanging center MSC is described communication system Administrative center. It bears complete call manager, and (does not retouch with the register that is subordinate to State) bear together the confirmation of communication user and the monitoring position in the network.

Fig. 5 has shown the base station BTS 1 that forms as tranmission/reception apparatus, the principle knot of BTS2 Structure, and Fig. 6 has shown the movement station MS1 that forms as tranmission/reception apparatus equally ... MS5's Theory structure. Base station BTS 1, BTS2 bear from to movement station MS1 ... the wireless communication of MS5 Transmitting and receiving of breath, and movement station MS1 ... MS5 bear from to base station BTS 1, BTS5 The the transmitting and receiving of wireless messages. The base station has a transmitting antenna SAN and one and connects for this reason Receive antenna EAN, and movement station MS1 ... MS5 has one and can control by antenna switching unit AU The community antenna ANT that being used for of system transmits and receives. At the upper base of up direction (RX path) BTS1, the BTS2 process of standing reception antenna EAN for example receives at least one movement station MS1 at least The wireless messages FN of the having frequency/time of MS5/code section, and movement station MS1 ... MS5 For example receive at least at least one at down direction (RX path) through community antenna ANT The wireless messages FN of the having frequency/time of base station BTS 1, BTS2/code section. Wireless communication Breath FN comprises the carrier signal of broadband expansion to this, its have add modulation by data symbol The message that forms.

In a radio receiver FEE (receiver), to the carrier signal filtering that receives, And mixing downwards is at intermediate frequency, and it is being taken a sample aspect self and is quantizing in addition. Turn at mould/number On radiolink, because producing the signal of distortion, multichannel propagation is supplied to an equilibrium after changing Device EQL, the adjustment distortion of its major part (Stw.: synchronously).

Then in a channel estimator KS, attempt the transmission spy of ground assessment transmission channel TRC The property, at this transmission channel transmission wireless messages FN. This is passed through the channel arteries and veins in time range The transmission characteristic of punching response explanation channel. Therefore can estimate channel impulse response, wireless messages FN the launch party (at movement station MS1 ... in this situation of MS5 or base station BTS 1, BTS2) With the form of a so-called mid portion be assigned with or additional one special, believe as training The additional information that the breath sequence forms.

At connected, as to be used for the signal of all a receptions common data detector DD In, it is special to correct in known manner and be separated in each movement station that comprises in the common signal Signal section. Correcting and after separating, at a symbol in data converter SDW, order The data symbol of front existence is converted to binary data. Then, when at a demultiplexer Among the DMUX each time slot be included into appropriate logic channel and therefore also be included into different movement stations it Before, in a demodulator DMOD, from intermediate frequency, obtain original bit stream.

The bit sequence decoding of channel mode ground to obtaining in a channel encode-decode device KC. Press Channels bits information is assigned to control and signalling time slot or a language time slot, and-in the base station In the situation (Fig. 5)-control and signaling data and language data transferred to a supervisor jointly The interface SS of signaling and speech encoding/decoding (speech encoding decoder) is in order to be transferred to the base station Controller BSC, and-in movement station (Fig. 6) situation-control with signaling data and transferred to the master The complete signaling of pipe movement station and control and the signaling unit STSE of control, language data is transferred Give a speech encoding decoder SPC who is designed to the language input and output.

In the speech encoding decoder of interface SS in base station BTS 1, BTS2, language data Become a predetermined data flow (for example 64kbit/s flow into network side to or 13kbit/s flow out network side to).

In a control module STE, implement the complete control of base station BS T1, BST2.

Down direction (transmission path) go up base station BS T1, BST2 by transmitting antenna SAN emission for example at least one have frequency/time/the wireless messages FN of code composition gives at least one mobile radio station MS1 ... MS5, and mobile radio station MS1 ... MS5 up direction (transmission path) by community antenna ANT emission for example at least one have frequency/time/the wireless messages FN of code composition gives at least one base station BTS 1, BTS2.

In Fig. 5, on base station BTS 1, BTS2, begin transmission path with this, promptly control that obtains through interface SS from base station controller BSC in channel encode-decode device KC and signaling data and language data are supplied to a control and signalling time slot or a language time slot, and these data channel modes be encoded to bit sequence.

In Fig. 6, at mobile radio station MS1 ... MS5 is last to begin transmission path with this, promptly the language data that in channel encode-decode device KC, from speech encoding decoder SPC, obtains and from control and signaling unit STSE the control and the signaling data that obtain be supplied to a control and signalling time slot or a language time slot, and these data channel modes be encoded to bit sequence.

In base station BTS 1, BTS2 and at mobile radio station MS1 ... the bit sequence that obtains among the MS5 is converted into data symbol data respectively in signal converter DSW.Code with each user's uniqueness is distinguished spread data symbol in an expanding unit SPE afterwards.In comprising the serial data generator BG of a serial data synthesizer BZS and a multiplexer MUX, replenish a training information sequence with the form of mid portion in serial data synthesizer BZS, for respectively then the expanded data symbol so that channel estimating, and the serial data information that obtains by this way in multiplexer MUX is placed on each appropriate time slot.Then, before the signal that obtains by this way is radiated transmitting antenna SAN or community antenna ANT as wireless messages FN through a wireless launcher FSE (reflector), the serial data that obtains in the modulation of modulator MOD medium-high frequency ground, and D/A switch respectively.

Therefore the wireless sight of describing in Fig. 4 is suitable for public application in the scope of not coordinating mutually, also is suitable for private application and (for example belongs to scope, SOHO scope; Small office/family), in the azygous frequency range of UMTS sight, is suitable for so-called ownership communication system (dwelling house communication system), must correspondingly disposes air interface.In the scope of not coordinating mutually, be different from the scope of mutual coordination-such as in gsm system, there be not " management " (non intelligent system), the distribution of this or these management coordination or control physical resource, and therefore in communication system, coordinate or control about the operation of main asynchronous static tranmission/reception apparatus.

The known ownership communication system that is suitable for not coordinated operation mutually be for example the DECT system [numeral strengthened (in the past: Europe) radio communication; Referring to: 42 (1992) January/February of information electronics, the first phase, Berlin, Germany; U.Pilger " dect standard structure ", 23 to 29 pages, in conjunction with ETSI publication ETS 300175-1 ... 9, the DECT publication of in October, 1992 and DECT forum, in February, 1997,1 to 16 page], its have wireless, between that move and/or static emitting and receiving equipment communicating by letter based on frequency division multiple access and time division multiple access.

Task based on the present invention is, provide one be suitable for having wireless, move and/or static tranmission/reception apparatus between based on the air interface of the ownership communication system of code division multiple access and time division multiple access communication, on this interface, the burst structure of this air interface so is matched with the not operation of coordination mutually paired (fdd mode) or azygous (tdd mode) frequency band under the condition of ownership communication system, promptly to the quality of each pulse train and for example continue to keep the standard that communicates to connect, the statement of so-called transfer standard is possible.

Feature by claim 1 solves this task.

Viewpoint based on the present invention is, have wireless with a special burst structure formation, move and/or static tranmission/reception apparatus between based on the air interface of the ownership communication system of code division multiple access and time division multiple access communication, on this interface, especially at the data segment of assigning a pulse train conflict identification (collision detection of variation) that is used to float before one first application data block and after one second application data block respectively, between application data block, assign a training information sequence that is used for channel estimating, so-called mid portion and/or a sync section, and assign one between and the pulse train conflict recognition data section that is used to float fast in second application data and for example form as the CRC section, being used for mistake is other data segment.

Useful improvement of the present invention is described in the dependent claims.

Set forth embodiments of the invention according to Fig. 7. That this figure has pointed out to have is wireless, moving And/or the ownership based on CDMA and time division multiple access communication is logical between the static tranmission/reception apparatus The special construction of the air interface of communication system.

That Fig. 7 has is wireless, move and/or static tranmission/reception apparatus between based on the special burst string structure of the air interface of the ownership communication system of CDMA communication, in this structure by the first data segment DF1 that is disposed in order a pulse train conflict identification (collision detection of variation) that is used to float of defined _SCD, one first application data block NDB1, one is used for the training information sequence of channel estimating, so-called mid portion TIS and/or sync section SYF, one the second fast NDB2 of application data, one that for example form as the CRC section, be used for wrong identification data segment DF _CRC, the pulse train conflict that is used to a float identification the second data segment DF2 _SCDWith a protection time zone SZZ.

Two data segment DF1 of the pulse train conflict identification that is used to float _SCDAnd DF2 _SCDComprise produce and information that receiving equipment is admitted by a transmitter.In receiving equipment, has data segment DF1 original transmitted, that receiving equipment is admitted _SCDAnd DF2 _SCDReception information relatively as the criterion of identification of the pulse train conflict identification of floating.Therefore before real application message at two application data block DF1 _SCDAnd DF2 _SCDIn can confirm pulse train conflict identification by the pulse train conflict.

Claims (3)

1. have wireless, between that move and/or static tranmission/reception apparatus based on the air interface of the ownership communication system of code division multiple access and time division multiple access communication, have following feature:

(a) so be divided into time slot (the ZS ｀ 1 of some respectively for the predetermined carrier frequency of communication system ... ZS ｀ 16), it has each predetermined time slot duration (T _ZS), communication system can be with tdd mode or fdd mode operation, the wherein time slot of every carrier frequency (ZS ｀ 1 ... ZS ｀ 16) form a time-multiplexed frame (ZR) respectively,

(b) at time slot (the ZS ｀ 1 of communication system ... ZS ｀ 16) or in the frequency range, mobile tranmission/reception apparatus (MS1 in communication system ... MS5) can set up a two-way communication that pre-determines number and/or between the communication user of static tranmission/reception apparatus (BTS1, BTS2) on the uplink and downlink direction simultaneously at most connects, wherein to the subscriber signal that can separate of this transmission and unique pseudo-random signal of distributing to the user, it is so-called code logic, connect

(c) time slot (ZS ｀ 1 ... ZS ｀ 16) comprises as " pulse train " respectively

(c1) two application data block-one first application data block (NDB1) and one second application data block (NDB2),

(c2) the training information sequence (TIS) and/or the sync section of a conduct " mid portion " formation, this sequence or sync section are arranged between the application data block (NDB1, NDB2),

Two data segment (DF of " pulse train " conflict identification that (c3) is used to float _SCD), one is arranged in first application data block (NDB1), the first data segment (DF1 before _SCD) and one at second application data block (NDB), the second data segment (DF2 afterwards _SCD),

(c4) be used for data segment (DF of wrong identification _CRC), it is arranged in two " pulse train " conflict recognition data section (DF that are used to float _SCD, DF1 _SCD, DF2 _SCD) between,

(c5) in a protection time zone (SZZ) of the end of " pulse train ",

(d) " pulse train " comprises the data division that forms as fragment, launch with the tape code with an expansion factor of predesignating.

2. 1 air interface as requested is characterized in that, is used for the data segment (DF of wrong identification _CRC) be arranged in " pulse train " conflict identification (DF2 that second application data block (NDB2) and second are used to float _SCD) data segment between.

3. 1 or 2 air interface as requested is characterized in that, is used for the data segment (DF of wrong identification _CRC) be a CRC section.

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