EP1072108A2

EP1072108A2 - Telecommunications system with wireless code and time-division multiplex based telecommuncation between mobile and/or stationary transmitting/receiving devices

Info

Publication number: EP1072108A2
Application number: EP99917817A
Authority: EP
Inventors: Erich Kamperschroer; Uwe Schwark
Original assignee: Siemens AG
Current assignee: Siemens AG
Priority date: 1998-02-27
Filing date: 1999-03-01
Publication date: 2001-01-31
Also published as: CN1298579A; WO1999044323A3; KR100377659B1; JP2002505549A; CN1214545C; WO1999044323A2; KR20010041390A; AU3596799A

Abstract

In order to improve the "bearer handling" compared to prior art solutions for telecommunications systems with wireless code and time-division multiplex based telecommuncation between mobile and/or stationary transmitting/receiving devices, the invention provides that in both a TDD mode and an FDD mode of the telecommunications system, logical channels of the telecommunications system such as the AGCH channel, the BCCH channel, the PCH channel, the RACH channel and/or the FACCH channel, said channels being required in a downlink direction and/or in an uplink direction, are bundled as transmission path services configured as "bearer services" in a code plane expanded by a code (C1...C8).

Description

description

Telecommunication systems with wireless, based on code and time division multiplex telecommunication between mobile and / or stationary transceivers

Telecommunication systems with wireless telecommunication between mobile and / or stationary transceivers are special message systems with a message transmission link between a message source and a message sink, in which for example base stations and mobile parts for message processing and transmission are used as transmitters and receivers and in which 1) the message processing and message transmission can take place in a preferred transmission direction (simplex mode) or in both transmission directions (duplex mode), 2) the message processing is preferably digital, 3) the message transmission over the long-distance transmission path is wireless based on various message transmission methods Multiple use of the message transmission link FDMA (Frequency Division Multiple Access), TDMA (Time Division Multiple Access) and / or CDMA (Code Division Multiple Access) - e.g. B. according to radio standards such as

DECT [Digital Enhanced (formerly: European) Cordless Telecommunication; see. Telecommunications Electronics 42 (1992) Jan. / Feb. No. 1, Berlin, DE; U. Pilger "Structure of the DECT standard", pages 23 to 29 in connection with the ETSI publication ETS 300175-1. . . October 9, 1992 and the DECT

Publication of the DECT Forum, February 1997, pages 1 to 16], GSM [Groupe Speciale Mobile or Global System for Mobile Communication; see. Informatik Spektrum 14 (1991) June, No. 3, Berlin, DE; A.Mann: "The GSM standard - basis for digital European mobile radio networks", pages 137 to 152 in connection with the publication telekom praxis 4/1993, P. Smolka "GSM radio interface - elements and functions" , Pages 17 to 24],

UMTS [Universal Mobile Telecommunication System; see. (1): Kommunikationstechnik Electronics, Berlin 45, 1995, Issue 1, Pages 10 to 14 and Issue 2, Pages 24 to 21; F. Jung, B.Steiner: "Concept of a CDMA mobile radio system with joint detection for the third generation of mobile communications"; (2): Kommunikationstechnik Electronics, Berlin 41, 1991, Issue 6, pages 223 to 227 and page 234; PW Baier, P. Jung, A. Klein: "CDMA - an inexpensive multiple access method for frequency-selective and time-variant mobile radio channels"; (3): IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E79-A, No. 12, December 1996, pages 1930 to 1937; PW Baier, P. Jung: "CDMA Myths and Realities Revised", '(4): IEEE Personal Communications, February 1995, pages 38 to 47; A. Urie, M. Streeton, C. Mourot: "An Advanced TDMA Mobile Access System for UMTS"; (5): telekom praxis, 5/1995, pages 9 to 14; PW Baier: "Spread Spectru Technology and CDMA - an originally military technology conquered the civilian sector", '(6): IEEE Personal Communications, February 1995, pages 48 to 53; PGAndermo, LM Ewerbring: "An CDMA-Based Radio Access Design for UMTS"; (7): ITG Fachberichte 124 (1993), Berlin, Offenbach: VDE Verlag ISBN 3-8007-1965-7, pages 67 to 75; Dr. T. Zimmermann, Siemens AG: "Application of CDMA in Mobile Communication"; (8): telcom report 16, (1993), volume 1, pages 38 to 41; Dr. T. Ketseoglou, Siemens AG and Dr. T. Zimmermann, Siemens AG: "Efficient subscriber access for the 3rd generation of mobile communication - multiple access procedure CDMA makes the air interface more flexible"; (9): Funkschau 6/98: R.Sietmann "Wrestling for the UMTS interface", pages 76 to 81] ACS or PACS, IS-54, IS-95, PHS, PDC etc. [cf. IEEE Communications Magazine, January 1995, pages 50 to 57; DD Falconer et al: "Time Division Multiple Access Methods for ireless Personal Communications"]. "Message" is a superordinate term that stands for both the meaning (information) and the physical representation (signal). Despite the same meaning of a message - that is, the same information - different signal forms can occur. For example, a message related to an item

(1) in the form of an image,

(2) as a spoken word,

(3) as a written word, (4) as an encrypted word or image.

The type of transmission according to (1) ... (3) is usually characterized by continuous (analog) signals, while the type of transmission according to (4) usually produces discontinuous signals (e.g. pulses, digital signals).

The following FIGURES 1 to 7 show:

FIGURE 1 "three-level structure" of a WCDMA / FDD air interface in the "downlink",

FIGURE 2 "three-level structure" of a WCDMA / FDD air interface in the "uplink",

FIGURE 3 "three-layer structure" a TDCDMA / TDD air interface ^¬ spot,

FIGURE 4 radio scenario with multiple channel utilization after frequency, / time, / code multiplex,

5 shows the basic structure of a base station designed as a transceiver,

6 shows the basic structure of a mobile station which is also designed as a transceiver,

FIGURE 7 shows a DECT transmission time frame. In the UMTS scenario (3rd generation of mobile telephony or IMT-2000) there are two partial scenarios, for example according to Funkschau 6/98: R. Sietmann "Wrestling for the UMTS Interface", pages 76 to 81. In a first sub-scenario, the licensed coordinated mobile radio is based on WCDMA technology (ideband code division multiple access) and, as with GSM, is operated in FDD mode (Frequency Division Duplex), while in a second sub-scenario the unlicensed uncoded ordinated mobile radio based on TD-CDMA technology (Time Division-Code Division Multiple Access) and, as with DECT, operated in TDD mode (Frequency Division Duplex).

For the WCDMA / FDD operation of the universal mobile telecommunication system, the air interface of the telecommunication system in the up and down direction of the telecommunication according to the publication ETSI STC SMG2 UMTS-Ll, Tdoc SMG2 UMTS-Ll 163/98 contains: "UTRA Physical Layer Description FDD Parts" Vers. 0. 3, 1998-05-29 each have several physical channels, of which a first physical channel, the so-called Dedicated Physical Control CHannel DPCCH, and a second physical channel, the so-called Dedicated Physical Data CHannel DPDCH, in relation to a "three-level structure", consisting of 720 ms long (T _MZR = 720 ms) multi-time frame - (super frame) MZR, 10 ms long (T _FZR = 10 ms) time frame (radio frame) ZR and 0.625 ms long (T _zs = 0.625 ms) time slots (timeslot) ZS, which are shown in FIGURES 1 and 2. The respective multi-time frame MZR contains, for example, 72 time frames ZR, while each time frame ZR, for example, again has 16 time slots ZS1 ... ZS16. The individual time slot ZS, ZS1 ... ZS16 (burst) has a pilot sequence PS with Npiiot bits for channel estimation with respect to the first physical channel DPCCH as a burst structure, a TPC sequence TPCS with N _TPC bits for power control (Traffic Power Control) and a TFCI sequence TFCIS with N _TFCι bits for specifying the transport format (Traffic Format Channel Indication) and with respect to the second physical channel DPDCH a user data sequence NDS with No _a ta bits.

In the "Downlink" (downward direction of telecommunications; radio connection from the base station to the mobile station) of the

WCDMA / FDD Systems from ETSI or ARIB - FIGURE 1 - the first physical channel ["Dedicated Physical Control Channel (DPCCH)] and the second physical channel [" Dedicated Physical Data Channel (DPDCH)] are time-multiplexed, while in the "uplink "(Upward direction of telecommunications; radio connection from the mobile station to the base station) - FIGURE 2 - an I / Q multiplex takes place, in which the second physical channel DPDCH is transmitted in the I channel and the first physical channel DPCCH in the Q channel.

For the TDCDMA / TDD operation of the universal mobile telecommunications system, the air interface of the telecommunications system, the document TSG RAN WG1 based in up and down direction of telecommunications according to (S1. 21): "3 ^rd Generation Partnership Project (3GPP) "Vers. 0. 0. 1, 1999-01 again on the "three-level structure", consisting of the multi-time frame MZR, the time frame ZR and the time slots ZS, for all physical channels, which is shown in FIG. 3. The respective multi-time frame MZR again contains, for example, 72 time frames ZR, while each time frame ZR, for example, again has the 16 time slots ZS1 ... ZS16. The individual time slot ZS, ZS1 ... ZS16 (burst) either has a first time slot structure (burst structure) ZSS1, in accordance with the ARIB proposal, in the sequence consisting of a first user data sequence NDS1 with N _data ι bits, the pilot -Sequence PS with N _pi ι ₀ t bits for channel estimation, the TPC sequence TPCS with N _TPC bits for power control, the TFCI sequence TFCIS with N _TFC ι bits for specifying the transport format, a second user data sequence NDS2 and a protection time zone SZZ (guard period) with N _Gu ard bits, or according to the ETSI proposal, a second time slot structure (burst structure) ZSS2, in the order consisting of the first user data sequence NDS1, a first TFCI sequence TFCIS1, a midamble sequence MIS for channel estimation, a second TFCI sequence TFCIS2, the second user data sequence NDS2 and the protection time zone SZZ.

FIGURE 4 shows e.g. based on a GSM radio scenario with e.g. two radio cells and base stations arranged therein (base transceiver station), a first base station BTS1 (transceiver) a first radio cell FZ1 and a second base station BTS2 (transceiver) omnidirectionally "illuminating" a second radio cell FZ2, and starting from the FIGURES 1 and 2 show a radio scenario with multiple use of channels according to frequency / time / code multiplex, in which the base stations BTS1, BTS2 have an air interface designed for the radio scenario with a plurality of mobile stations MSI ... located in the radio cells FZ1, FZ2. MS5 (transmit

/ Receiving device) by wireless unidirectional or bidirectional - upward direction UL (up link) and / or downward direction DL (down link) - telecommunication are connected or connectable to corresponding transmission channels TRC (transmission channel). The base stations BTS1, BTS2 are known

Way (cf. GSM telecommunications system) connected to a base station controller BSC (BaseStation Controller), which takes over the frequency management and switching functions as part of the control of the base stations. The base station controller BSC is in turn connected via a mobile switching center MSC ■ (Mobile Switching Center) to the higher-level telecommunications network, e.g. the PSTN (Public Switched Telecommunications Network). The mobile switching center MSC is the administration center for the telecommunications system shown. It takes over the complete call management and, with associated registers (not shown), the authentication of the telecommunication participants and the location monitoring in the network.

FIG. 5 shows the basic structure of the base station BTS1, BTS2 designed as a transceiver, while FIG. 6 shows the basic structure of the base station, also as a / Receiving device trained mobile station MS1 ... MS5 shows. The base station BTS1, BTS2 takes over the sending and receiving of radio messages from and to the mobile station MS1..MS5, while the mobile station MS1 ... MS5 takes over the sending and receiving of radio messages from and to the base station BTS1, BTS2. For this purpose, the base station has a transmitting antenna SAN and a receiving antenna EAN, while the mobile station MS1 ... MS5 has an antenna ANT that can be controlled by an antenna switch AU for transmission and reception. In the upward direction (receive path), the base station BTS1, BTS2 receives, for example, at least one radio message FN with a frequency / time / code component from at least one of the mobile stations MS1 ... MS5 via the receive antenna EAN, while the mobile station MS1 ... receives in the waste ^• forward direction (reception path) via the common antenna ANT, for example, at least one radio message FN with a frequency / time / code component of at least one base station BTS1, BTS2 MS5. The radio message FN consists of a broadband spread carrier signal with information modulated onto data symbols.

The received carrier signal is filtered in a radio receiving device FEE (receiver) and mixed down to an intermediate frequency, which in turn is subsequently sampled and quantized. After an analog / digital conversion, the signal, which has been distorted on the radio path by multipath propagation, is fed to an equalizer EQL, which largely compensates for the distortions (Stw.: Synchronization).

An attempt is then made in a channel estimator KS to estimate the transmission properties of the transmission channel TRC on which the radio message FN has been transmitted. The transmission properties of the channel are specified in the time domain by the channel impulse response. So that the channel impulse response can be estimated, the radio FN sends or assigns special (in the present case from the mobile station MS1 ... MS5 or the base station BTS1, BTS2) special training information sequence in the form of a so-called midi.

In a subsequent data detector DD common to all received signals, the individual mobile station-specific signal components contained in the common signal are equalized and separated in a known manner. After equalization and separation, the previously existing data symbols are converted into binary data in a symbol-to-data converter SDW. The original bit stream is then obtained from the intermediate frequency in a demodulator DMOD before the individual time slots are assigned to the correct logical channels and thus also to the different mobile stations in a demultiplexer DMUX.

The bit sequence obtained is decoded channel by channel in a channel codec KC. Depending on the channel, the bit information is assigned to the control and signaling time slot or a voice time slot and - in the case of the base station (FIGURE 5) - the control and signaling data and the voice data for transmission to the base station controller BSC together for signaling and voice coding / decoding (Voice codec) handover the responsible interface SS, while - in the case of the mobile station (FIGURE 6) - the control and signaling data of a control and signaling unit STSE responsible for complete signaling and control of the mobile station and the voice data one for voice input and - output speech codec SPC are passed.

In the speech codec of the interface SS in the base station BTS1, BTS2, the speech data are stored in a predetermined data stream (for example 64 kbit / s stream in the network direction or 13 kbit / s stream from the network direction). The complete control of the base station BTS1, BTS2 is carried out in a control unit STE.

In the downward direction (transmission path), the base station BTS1, BTS2 sends, for example, at least one radio message FN with a frequency / time / code component to at least one of the mobile stations MS1 ... MS5 via the transmitting antenna SAN, while the mobile station MS1 ... MS5 in the upward direction (transmission path) via the common antenna ANT, for example, sends at least one radio message FN with a frequency / time / code component to at least one base station BTS1, BTS2.

The transmission path begins at the base station BTS1, BTS2 in

FIGURE 5 with the fact that in the channel codec KC control and signaling data as well as voice data received from the base station controller BSC via the interface SS are assigned to a control and signaling time slot or a voice time slot and these are coded channel by channel into a bit sequence.

The transmission path begins at the mobile station MS1 ... MS5 in FIGURE 6 with the fact that in the channel codec KC speech data received from the speech codec SPC and control and signaling data received from the control and signaling unit STSE a control and signaling time slot or are assigned to a speech time slot and these are coded channel-wise into a bit sequence.

The bit sequence obtained in the base station BTS1, BTS2 and in the mobile station MS1 ... MS5 is in each case converted into data symbols in a data-to-symbol converter DSW. Subsequently, the data symbols are each in a spreading device SPE with a subscriber-specific one

Spread code. In the burst generator BG, consisting of a burst composer BZS and a multiplexer MUX, after a training information sequence in the form of a supplement to the channel estimation is added to the spread data symbols in the burst composer BZS and the burst information obtained in this way is set to the correct time slot in the multiplexer MUX. Finally, the burst obtained is each modulated at high frequency in a modulator MOD and converted to digital / analog before the signal obtained in this way is emitted as a radio message FN via a radio transmission device FSE (transmitter) on the transmission antenna SAN or the common antenna ANT.

TDD (Time Division Duplex) telecommunication systems are telecommunication systems in which the transmission time frame, consisting of several time slots, is divided for the downward transmission direction (downlink) and the upward transmission direction (uplink), preferably in the middle.

A TDD telecommunication system having such a transmission time frame is e.g. the well-known DECT system [Digital Enhanced (formerly: European) Cordless Telecommunication; see. Telecommunications Electronics 42 (1992) Jan. / Feb. No. 1, Berlin, DE; U. Pilger "Structure of the DECT Standard", pages 23 to 29 in connection with the ETSI publication ETS 3001 75-1... 9, October 1992 and the DECT publication of the DECT Forum, February 1997, pages 1 to 16].

FIGURE 7 shows a DECT transmission time frame with a time duration of 10 ms, consisting of 12 “downlink” time slots and 12 “uplink” time slots. For any bidirectional telecommunication connection on a predetermined frequency in the downlink direction DL (down link) and uplink direction UL (up link), a free time slot pair with a “downlink” time slot ZS _D ON and an “uplink” is used in accordance with the DECT standard "Time slot ZSUP selected, in which the distance between the" downlink "-

Time slot ZS _D OWN and the "uplink" time slot ZSUP also According to the DECT standard, half the length (5 ms) of the DECT transmission time frame is.

FDD (Frequency Division Duplex) telecommunication systems are telecommunication systems in which the time frame, consisting of several time slots, is transmitted in a first frequency band for the downlink direction and in a second frequency band for the uplink direction.

An FDD telecommunication system that transmits the time frame in this way is e.g. the well-known GSM system [Groupe Speciale Mobile or Global System for Mobile Communication; see. Informatik Spektrum 14 (1991) June, No. 3, Berlin, DE; A. Mann: "The GSM standard - basis for digital European mobile radio networks", pages 137 to 152 in connection with the publication telekom praxis 4/1993, P. Smolka "GSM radio interface - elements and functions", pages 17 to 24].

The air interface for the GSM system knows a variety of logical channels called bearer services, e.g. an AGCH channel (Access Grant CHannel), a BCCH channel (BroadCast CHannel), a FACCH channel (Fast Associated Control CHannel), a PCH channel (Paging CHhannel), an RACH channel (Random Access CHannel) and a TCH channel (Traffic CHannel), whose respective function in the air interface, for example in the publication Informatik Spektrum 14 (1991) June, No. 3, Berlin, DE; A.Mann: "The GSM standard - the basis for digital European mobiles funknet- net ", pages 137 to 152 in connection with the publication telekom praxis 4/1993, P. Smolka" GSM radio interface - elements and functions ", pages 17 to 24 is described.

Since WCDMA / FDD operation and TDCDMA / TDD operation are to be used together in the UMTS scenario (3rd generation of mobile telephony or IMT-2000), efficient use of the logical channels and the transmission path services Most (bearer handling) in the air interface for telecommunication systems with wireless, based on code and time division based telecommunication between mobile and / or stationary transceivers is desirable.

The object on which the invention is based is to improve this "bearer handling" compared to previous solutions for telecommunication systems with wireless telecommunication based on code and time multiplex between mobile and / or stationary transceivers.

This object is solved by the features of claims 1 and 6, respectively.

The idea underlying the invention is that - according to claims 1 and 6 - for telecommunications systems with wireless, based on code and time division multiplex telecommunications between mobile and / or stationary transceivers, both in the TDD mode and also in the FDD mode as "bearer services" trained transmission path services - for example according to claims 2 or 7 logical channels of the telecommunication system such as the AGCH channel, the BCCH channel, the PCH channel, the RACH channel and / or the FACCH channel, which are required in the telecommunication system in the downward direction and / or upward direction, are bundled in a code level spanned by codes.

In the development of the invention according to claim 5 or claim 10, it is advantageous that in the TDD mode, the performance and the spectral efficiency of the telecommunication system is in part significantly improved compared to known TDD systems.

Further advantageous developments of the invention are specified in the remaining claims. An embodiment of the invention will be explained with reference to FIGURES 8 and 9. These show:

FIG. 8 shows a comparison with the time frames in FIGS. 1 to 3 and the DECT transmission time frame in FIG. 7 with regard to the number of time slots (modified) TDD time-division multiplex frames,

FIGURE 9, on the basis of the time-division multiplex frame according to FIGURE 8, a channel allocation table for channels with a frequency, code and time-division multiplex component

FIGURE 8 shows, starting from the time frames in FIGS. 1 to 3 and the DECT transmission time frame in FIGURE 7, a (modified) TDD time-division multiplex frame ZMR with eight time slots ZS ^Λ 1 ... ZS ^Λ 8, the first four time slots ZS 1. ..ZS for the downward transmission direction DL and the second four time slots ZS ^x 5 ... ZS ^λ 8 for the upward transmission direction UL are provided. The number of time slots has been reduced from "16" according to FIGURES 1 and 3 to "8" only for the sake of illustration for the channel allocation table in FIGURE 9 and has no restrictive, limiting influence on the invention. On the contrary - the number of time slots - like the other physical resources (eg code, frequency, etc.) - can be varied to a greater or lesser extent depending on the telecommunications system.

FIGURE 9 shows, based on the time-division multiplex frame according to FIGURE 8, a channel allocation table for channels with a frequency, code and time-division multiplex component. The time division multiplex component of this table comprises the time slots ZS ^Λ 1 ... ZS with the TDD division according to FIGURE 8. The frequency division multiplex component comprises 12 frequencies FR1 ... FR12, while the code multiplex component 8 codes (pseudo random signals) C1 ... C8 contains.

Transmission path services designed as “bearer services”, for example logical channels of the telecommunication system such as the control channel for signaling, the AGCH channel, the BCCH channel, the PCH channel, the RACH channel, the TCH channel and / or the FACCH channel, which are required in the telecommunication system in the downward direction and / or upward direction, in one by the codes

C1 ... C8 spanned code level bundled. This bundling has proven to be expedient for the above-mentioned telecommunication systems because it avoids unnecessary occupancy of time slots, that is to say the resource “time”.

FIGURE 9 shows a preferred embodiment, according to which on the first frequency FR1 in the downward transmission direction in a first time slot ZS ^λ l as a fixed (agreed) first selection time slot and in the upward transmission direction in a fifth time slot ZS ^Λ 5 as a fixedly specified (agreed) second selection time slot, preferably all codes C1 ... C8 are used for the bundling of the transmission path services mentioned. It is of course also possible to use less or, if more than these eight codes are available, also more codes.

With this bundling shown in FIGURE 9, for example, the codes C1 ... C8 in the first time slot ZS 1 are divided so that one code for the control channel for signaling and the AGCH channel, another code for the BCCH channel and the PCH channel and the remaining six codes are reserved for the TCH channel, while the codes C1 ... C8 are divided in the fifth time slot ZS ^λ 5 so that a code for the RACH channel is one further code for the FACCH channel for handover indication and the remaining ones six codes are reserved or assigned for the TCH channel.

The spectral efficiency and / or the performance of the telecommunications system can also be further improved if - as shown in FIGURE 9 - for different connection scenarios, a first connection scenario VSZ1, a second connection scenario VSZ2, a third connection scenario VSZ3, one fourth connection scenario VSZ4 and a fifth connection scenario VSZ5, in each case several bidirectional TDD telecommunication connections, for which the physical resource “code, frequency, time” in the downlink and uplink transmission direction are partly identical and partly unequally occupied. For each ver - The binding scenario VSZ1 ... VSZ5 includes, for example, a first group of telecommunication connections G1, which is marked with an ascending and descending hatching, and a second group of telecommunication connections G2, which is marked with a descending hatching, each group containing at least one bidirectional ionic telecommunication connection.

In the first connection scenario VSZ1, the first group of telecommunication connections G1 occupies six codes on a second frequency FR2 in the downward transmission direction in a second time slot ZS ^r 2 - a first code C1, a second code C2, a third code C3, a fourth code C4, one fifth code C5 and a sixth code C6 - and in the upward transmission direction in a sixth time slot ZS 6 again the six codes C1 ... C6, while the second group of telecommunications connections G2 on the second frequency FR2 in the downward transmission direction in a fourth time slot ZS ^λ 4 den first code Cl and in the upward transmission direction in an eighth time slot ZS ^λ 8 again occupies the first code Cl. The fourth time slot ZS and the second time slot ZS 2 are "downlink" time slots ZSD _O W _N while the sixth time slot ZS ^λ 6 and the eighth time slot ZS ^λ 8 are "uplink" time slots ZSUP.

For each telecommunications connection in the groups G1, G2, a first distance AS1 between the "downlink" time slot ZS _D ON and the "uplink" time slot ZS _UP - according to the prior art (cf. FIG. 7) - is so long , like half the time division multiplex frame ZMR. The distance AS1 is thus a fraction of the length of the time-division multiplex frame ZMR, the fraction having the value 0.5.

In the second connection scenario VSZ2, the first group of telecommunication connections G1 occupies the six codes C1 ... C6 on a fourth frequency FR4 in the downward transmission direction in the fourth time slot ZS and again in the seventh time slot ZS ^λ 6 in the seventh time slot the six codes C1. ..C6, while the second group of telecommunications connections G2 on the fourth frequency FR4 in the downward transmission direction in a second time slot ZS 2 the codes C1 ... C4 and in the upward transmission direction in the fifth time slot ZS ^Λ 5 the first code Cl and the second Code C2 occupied.

The fourth time slot ZS and the second time slot ZS ^Λ 2 are - like in the first connection scenario VSZ1 - "downlink" time slots ZS _DOWN while the seventh time slot ZS ^λ 7 and the fifth time slot ZS 5 are "uplink" time slots ZS _UP .

For each telecommunication connection in groups G1, G2, a second distance AS2 between the "downlink" time slot ZS _DOWN and the "uplink" time slot ZS _U P SO is as long as a fraction (distance) of the length of the time plexrahms ZMR, the fraction so dimensioned and larger or smaller than the value 0.5 that the second distance AS2 is fixed. In the third connection scenario VSZ3, the first group of telecommunication connections G1 in the downward transmission direction on a sixth frequency FR6 in the second time slot ZS ^λ 2 occupies the four codes C1 ... C4 and in the upward transmission direction on a fifth frequency FR5 in the eighth time slot ZS ^λ 8 the six codes C1 ... C6 as well as a seventh code C7 and an eighth code C8, while the second group of telecommunication connections G2 in the downward transmission direction on the sixth frequency FR6 in a third time slot ZS ^Λ 3 the codes C1 .. .C3 and in the upward transmission direction on the fifth frequency FR5 in the fifth time slot ZS ^λ 5 occupies the codes C1 ... C4.

The second time slot ZS ^Λ 2 and the third time slot ZS 3 are “downlink” time slots ZSDOWN / while the eighth time slot ZS ^Λ 8 and the fifth time slot ZS ^Λ 5 are “uplink” time slots ZSU _P.

For each telecommunication connection in groups G1, G2, a third distance AS3 between the "downlink" time slot ZS _DO W _N and the "uplink" time slot ZS _{UP is} a fraction (distance) of the length of the time division multiplex frame ZMR, the fraction in each case is dimensioned such that the third distance AS3 is variable.

In the fourth connection scenario VSZ4, the first group of telecommunication connections Gl occupies the first code C1 in the downward transmission direction on an eighth frequency \ FR8 in the fourth time slot ZS and in the upward transmission direction on a ninth frequency FR9 in the sixth time slot ZS 6 the seven codes C1 ... C7, while the second group of telecommunication connections G2 in the downward transmission direction on the eighth frequency FR8 in the third time slot ZS 3 the first code Cl and in the upward transmission direction on the ninth frequency FR9 in the fifth time slot ZS ^Λ 5 the first code Cl occupied. The fourth time slot ZS and the third time slot ZS 3 are “downlink” time slots ZS _DO W _N , while the sixth time slot ZS ^X 6 and the fifth time slot ZS ^λ 5 are “uplink” time slots ZSUP.

For each telecommunications connection in the groups G1, G2, a fourth distance AS4 between the "downlink" time slot ZSDOWN and the "uplink" time slot ZS _{UP is} a fraction (distance) of the length of the time-division multiplex frame ZMR, the fraction always being so it is dimensioned that the fourth distance AS4 is fixed.

In the fifth call scenario VSZ5 the first group of telecommunications connections Gl is onto an eleventh frequency FRLL in the downward direction of transmission in the fourth time slot ZS the first code Cl and the second code C2, and ^λ in the uplink transmission direction in the fifth time slot ZS 5 again the first code Cl and second code C2, while the second group of telecommunications connections G2 occupies the codes C1 ... C5 on the eleventh frequency FRll in the downward transmission direction in the first time slot ZS ^λ l and in the upward direction in the eighth time slot ZS 8 the codes C1 ... C3.

The fourth time slot ZS and the first time slot ZS 1 are “downlink” time slots ZS _DO W _{N /} while the fifth time slot ZS ^Λ 5 and the eighth time slot ZS ^λ 8 are “uplink” time slots ZS _UP .

For each telecommunications connection in groups G1, G2, a fifth distance AS5 between the "downlink" time slot ZS _DOWN and the "uplink" time slot ZS _{UP is} as long as a fraction (distance) of the length of the time-division multiplex frame ZMR, the fraction so dimensioned that the second distance AS2 is variable.

Claims

claims

1. Air interface for telecommunication systems with wireless, based on code and time division multiplex telecommunication between mobile and / or stationary transceivers with the following features:

(a) Carrier frequencies (FR1 ... FR12) predefined for the telecommunications system are each divided into a number of time slots (ZS 1 ... ZS 8) each with a predefined time slot duration (T _zs ) such that the

Telecommunication system can be operated in TDD mode or FDD mode, the time slots (ZS ^Λ l ... ZS 8) per carrier frequency (FR1 ... FR12) each forming a time division multiplex frame (ZMR), (b) in the time slots (ZS ^Λ l ... ZS ^x 8) or the frequency ranges of the telecommunication system are at most a predetermined number of bidirectional telecommunication connections in the up and down direction between telecommunication subscribers of the mobile transceivers (MS1 ... MS5) and / or stationary transmissions -

/ Receiving devices (BTS1, BTS2) of the telecommunication system can be produced simultaneously, the transmitted subscriber signals being linked to the subscribers to be assigned individually assigned pseudo-random signals (C1 ... C8), the so-called codes,

(c) Transmission path services designed as “bearer services”, which are required in the telecommunication system in the downward direction and / or upward direction, are bundled in a code level spanned by the codes (C1 ... C8).

2. Air interface according to claim 1, characterized in that at least part of the logical channels of the telecommunications system - for example the control channel for signaling, the AGCH channel, the BCCH channel, the PCH channel, the RACH channel, the TCH channel and / or the FACCH channel - is bundled as transmission path services in the code level.

3. Air interface according to claim 1 or 2, characterized in that a first selection time slot (ZS ^λ l) in the downward direction and a second selection time slot (ZS ^λ 5) are provided in the upward direction, in which the bundling takes place.

4. Air interface according to claim 3, characterized in that the first selection time slot (ZS ^Λ 1) is a first time slot (ZS ^Λ 1) of the time slots (ZS ^Λ l ... ZS ^λ 8) and the second selection time slot (ZS ^Λ 5) is a fifth time slot (ZS ^λ 5) of the time slots (ZS ^Λ l ... ZS 8).

5. Air interface according to one of claims 1 to 4, characterized in that in the TDD mode a time slot pair, a "downlink" time slot (ZS ^X _DO WN) and an "uplink" time slot (ZSV) can be selected for each telecommunications connection is that the distance (AS2 ... AS5) between the "downlink" time slot (ZS ^Λ _DO WN) and the "uplink" time slot (ZSV) / that of the same carrier frequency (FR1 ... FR12) or different carrier fre- sequences (FR1 ... FR12) are assigned, is a fraction of the length of the time-division multiplex frame (ZMR), the distance (AS2 ... AS5) being fixed or variable.

6. Method for controlling telecommunication connections in telecommunication systems with wireless, on code and

Time-division-based telecommunications between mobile and / or stationary transceivers, with (a) carrier frequencies (FR1 ... FR12) specified for the telecommunications system each in a number of time slots (ZS 1 ... ZS S), each with one predetermined time slot duration (T _zs ) are divided such that the telecommunication system is in TDD mode or FDD mode is drivable, the time slots (ZS ^Λ l ... ZS ^λ 8) per carrier frequency (FR1 ... FR12) each forming a time-division multiplex frame (ZMR), (b) in the time slots (ZS ^Λ l ... ZS 8) or the frequency ranges of the telecommunication system at most a predetermined number of bidirectional telecommunication connections in the upward and downward direction between telecommunication subscribers of the mobile transceivers (MS1 ... MS5) and / or stationary transceivers (BTS1, BTS2) of the telecommunication system can be produced simultaneously, the transmitted subscriber signals for separability being linked to the subscriber individually assigned pseudo-random signals (C1 ... C8), the so-called codes, characterized in that transmission path services designed as “bearer services” are used in the telecommunication system in the downward direction and / or upward direction are required, in a code plane spanned by the codes (C1 ... C8) ne to be bundled.

7. The method according to claim 6, characterized in that at least a part of logical channels of the telecommunications system - e.g. the control channel for signaling, the AGCH channel, the BCCH channel, the PCH channel, the RACH channel, the TCH channel and / or the FACCH channel - are bundled as transmission path services in the code level.

8. The method according to claim 6 or 7, characterized in that the bundling takes place in a first selection time slot (ZS ^X 1) in the downward direction and a second selection time slot (ZS ^Λ 5) in the upward direction.

9. The method according to claim 8, characterized in that the first selection time slot (ZS ^Λ 1) a first time slot

(ZS ^λ L) of time slots (ZS ^λ l ZS ^Λ 8) is assigned, and (5 ZS ^Λ) a fifth time slot (ZS ^λ 5) of the time slots (ZS l ... ZS ^Λ 8) is associated with the second selection time slot.

10. The method according to any one of claims 6 to 9, characterized in that a time slot pair, a "downlink" time slot (ZSVWN) and an "uplink" time slot (ZSV) is selected in the TDD mode for each telecommunications link the distance (AS2 ... AS5) between the "downlink" time slot (ZSVWN) and the "uplink" time slot (ZSV) / that of the same carrier frequency (FR1 ... FR12) or different carrier frequencies (FR1 ... FR12) are assigned, is a fraction of the length of the time-division multiplex frame (ZMR), the distance (AS2 ... AS5) being fixed or variable.