EP1059012A1 - Telecommunications system with wireless code and time-division multiplex based telecommuncation between mobile and/or stationary transmitting/receiving devices - Google PatentsTelecommunications system with wireless code and time-division multiplex based telecommuncation between mobile and/or stationary transmitting/receiving devices
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- EP1059012A1 EP1059012A1 EP19990913203 EP99913203A EP1059012A1 EP 1059012 A1 EP1059012 A1 EP 1059012A1 EP 19990913203 EP19990913203 EP 19990913203 EP 99913203 A EP99913203 A EP 99913203A EP 1059012 A1 EP1059012 A1 EP 1059012A1
- European Patent Office
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
Telecommunication systems with wireless, to code and time multiplex-based telecommunication between mobile and / or stationary transmitting / receiving appliances
Telecommunications systems using wireless telecommunication between mobile and / or stationary transmitting / receiving devices are special messaging systems with a Nachrichtenüber- 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 the transmitting and receiving devices and in which 1) the message processing and message transmission in a preferred direction of transmission can take place (simplex mode), or (in both transmission directions duplex mode), 2) the message processing is preferably digital, 3) the transmission of messages via the remote transmission path wirelessly on the basis of various message transmission process for multiple use of the message transmission path FDMA (Frequency Division multiple Access), TDMA (Time Division multiple Access) and / or CDMA (code Division multiple Access) - for example, by radio standards such as
DECT [Digital Enhanced (previously: European) Cordless Telecom u- nication; see. News Elektronik 42 (1992) Jan. / Feb. No. 1, Berlin, DE. U. Pilger "Structure of the DECT standards," Be th in conjunction with the ETSI publication ETS 3001 75-1 23 to 29. , , 9 October 1992 and the DECT
Publication of the DECT Forum, February 1997 Be th 1 to 1 6] GSM [Groupe Speciale Mobile or Global System for Mobile Communication; see. Computer science spectrum 14 (1991) June, No. 3, Berlin, DE. A.Mann: "The GSM standard - the basis for di - gi tale European mobile f unknetze" Be th 137-152 in conjunction with the publication telekom praxis 4/1993, P. Smolka ttstelle n GSM Funkschni - elements and functions "2 pages 17 to 24]
UMTS [Universal Mobile Telecommunication System; see. (1): Nachrichtentechnik Elektronik, Berlin 45, 1995, Issue 1, pages 10 to 14 and Volume 2, pages 24 to 27; "Spark generation concept of a CDMA mobile radio system with joint detection for the third mobile"; P.Jung, B.Steiner (2): Nachrichtentechnik Elektronik, Berlin 41, 1991, Issue 6, pages 223-227 and page 234; PW Baier, P.Jung, A. Klein, "CDMA - a discount multiple access method for frequenzselek- tive and time-variant mobile radio channels"; (3):. IEICE Transacti- ons on Fundamentals of Electonics, Communications and Computer Sciences, Vol E79-A, No. 12, December 1996, pages 1930-1937; PN Baier, P.Jung: "Myths and Realities CDMA revi- sited"; (4): IEEE Personal Communications, February 1995, pages 38 to 41; A.ürie, M.Streeton, C.Mourot: "An Advanced TDMA Mobile Access System for UMTS"; telecom practice, 5/1995, pages 9 to 14; (5) P. VI. Baier: "Sp re ad-Spectrum technology and CDMA - originally a military technology conquers the civil 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 61 to 15; Dr. T.Zimmermann, Siemens AG: "Application of CDMA in mobile communications"; (8): Telcom Report 16 (1993), Issue 1, pages 38 to 41; Dr. T. Ketseoglou, Siemens AG and Dr. ■ T.Zimmermann, Siemens AG: "Efficient subscriber access to the third generation of mobile communications - Multiple Access CDMA sver drive makes air interface flexible"; (9): Funkschau 6/98: R.Siet ann "rings around the UMTS interface", pages 16 to 81] ACS or PACS, IS-54, IS- 95, PHS, PDC etc. [cp. IEEE Communications Magazine, January 1995, pages 50 to 57; DD Falconer et al: "Time Division Multiple Access Methods for ireless Personal Communications"] takes place. 3 "Message" is a generic term which stands both for the meaning content (information) and the physical representation (signal). Despite the same sense held ¬ tes a message - say the same information - you may experience different signal forms. For example, a message relating to an object
(1) in the form of an image,
(2) as the spoken word,
(3) be transmitted as a written word, (4) as an encrypted word or image.
The transmission according to (1) ... (3) is normally characterized by continuous (analog) signals thus arise currency ¬ rend in accordance with the transmission (4) is usually discontinuous signals (eg, pulses, digital signals).
The following figures 1 to 7 show:
FIGURE 1 "three-tier structure" of a WCDMA / FDD air interface in the "downlink"
FIGURE 2 "three-tier structure" of a WCDMA / FDD air interface in the "uplink"
FIGURE 3 "three-layer structure" a TDCDMA / TDD air interface ¬ steep,
FIGURE 4 radio scenario with channel multiple utilization according to the frequency / time / code division,
5 shows the basic structure of a device as a transmitting / receiving base station formed,
FIGURE 6 shows the basic structure of a likewise designed as a transmitting / receiving unit mobile station,
FIGURE 7 is a DECT Ubertragungszeitrahmen. In the UMTS scenario (3rd mobile radio generation or IMT-2000), there are, for example, according to the document Funkschau 6/98: R. Sietmann "rings around the UMTS Schni ttstelle" Be th 16-81 two sub-scenarios. In a first sub-scenario of the licensed catalyzed coordinated mobile radio is based on WCDMA technology (Wideband Code Division Multiple Access) and, as in GSM, (Frequency Division Duplex) in the FDD mode operated while unko- in a second sub-scenario of the unlicensed ordained mobile on a TD-CDMA technology (Time Division-code Division Multiple Access) based and, as with DECT, in TDD mode (Frequency Division duplex) is operated.
For the WCDMA / FDD operation of the universal mobile telecommunications system, the air interface of the telecommunications system in up and down direction of telecommunications according to the document ETSI STC SMG2 UMTS-Ll, Tdoc SMG2 UMTS Ll 1 63/98 contains: " UTRA Physical layer Descripti on FDD Parts "verse. 0. 3, respectively 1998-05-29 more physical channels, of which a first physical channel, called the Dedicated Physical Control CHannel DPCCH, and a second physical channel, the so-called Dedicated Physical Data Channel DPDCH, with respect to a "three- layer structure "(three-layer structure), consisting of 720 ms long (T MZR = 720 ms) multi- timeframe * (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 (time slot) ZS, which are shown in FIGURES 1 and 2. FIG. The respective multi time frames MZR contains, for example, 72 time frames ZR, while each time frame ZR in turn has, for example, 16 time slots ZS1 ... ZS16. The individual time slot ZS, ZS1 ... ZS16 (burst) has with respect to the first physical channel DPCCH as a burst structure of a pilot sequence PS with Npnot bits for channel estimation, a TPC sequence TPCS with N TPC bits for power control (Traffic Power Control) and a relative TFCI sequence TFCIS with N bits for TFC τ Transportformatangäbe (Traffic channel format Indication) and the 5 second physical channel DPDCH a Nutzdatensequenz NDS with N data bits on.
In the "downlink" (downward direction of telecommunications; radio link from the base station to mobile station) of the
WCDMA / FDD system by ETSI and 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 link from the mobile station to base station) - FIGURE 2 - a I / Q multiplexing is taking place, wherein the second physical channel DPDCH in the I channel and the first physical channel DPCCH in the Q channel is transmitted.
For the TDCDMA / TDD operation of the universal mobile telecommunications system, the air interface of the telecommunications system is based in up and down direction of telecommunications according to document TSG RAN WG1 (S1. 21): "3 rd Generation Partnership Project (3GPP) "verse. 0. 0. 1, 1999-01 turn on the "three-layer structure", consisting of the multi time frames MZR, ZR, and the time frame the time slots ZS, for all physical channels is shown in FIG. 3 In turn, the respective multi time frames MZR contains, for example, 72 time frames ZR, while each time frame ZR in turn has, for example, the 16 time slots ZS1 ... ZS16. The individual time slot ZS, ZS1 ... ZS16 (burst) has either according to the ARIB proposal for a first time slot structure (burst structure) ZSS1, in the order consisting of a first Nutzdatense- frequency NDS1 with N Da tai bits, the pilot sequence PS with N P ii ot bits for channel estimation, the TPC sequence TPCS with N TPC bits for power control, TFCI sequence TFCIS with N TFC τ bits for traffic format channel indication, a second Nutzdatensequenz NDS2 and a guard time zone SZZ (guard period ) with N Gua rd bits, or in accordance with the ETSI proposal, a second time slot structure (burst structure) ZSS2, in the sequence consisting of the first Nutzdatensequenz NDS1, a first TFCI sequence 6 TFCIS1, a midamble sequence MIS for channel estimation, a second TFCI sequence TFCIS2, the second Nutzdatensequenz NDS2 and the guard time zone SZZ on.
FIGURE 4 shows, for example based on a GSM radio scenario with for example, two radio cells and arranged therein base stations (Base Transceiver Station), a first base station BTS1 (transmitter / receiver) a first radio cell FZ1 and a second base station BTS2 (transmitting / receiving unit) a second radio cell FZ2 omnidirectional "illuminates", and starting from FIGURES 1 and 2, a radio scenario with channel multiple utilization after the frequency / time / code division, wherein the base stations BTS1, BTS2 with a designed for the radio scenario air interface more in the radio cells FZ1, located FZ2 mobile stations MSI ... MS5 (send / receive device) by wireless uni- or bidirectional - uplink UL (up link) and / or downlink DL (down link) - telecommunications on corresponding transmission channels TRC are (transmission channel) or can be connected. The base stations BTS1, BTS2 are in a known manner (see FIG. GSM telecommunication system) with a base station controller BSC (Base Station Controller), which takes over the spectrum management and switching functions under the control of the base stations. The base station controller BSC is in turn through a mobile switching center MSC
(Mobile Switching Center) with the overall telecommunications network, such as the PSTN (Public Switched Telecommunication Network), respectively. The mobile switching center MSC is systematically the management center for the illustrated telecommunications. It handles the complete call management and with associated registers (not shown), the Authentisie- tion of telecommunications subscribers as well as the local monitoring network.
FIGURE 5 shows the basic structure of the constructed as a transmitting / receiving device the base station BTS1, BTS2, while FIGURE 6 shows the basic configuration of the mobile station MS1 which is also constructed as a transmission 7 / receiving device displays ... MS5. The base station BTS1, BTS2 accepts sending and receiving radio messages from and to the mobile station MS1..MS5, while the mobile station MS1 ... MS5 accepts sending and receiving radio messages from and to the base station BTS1, BTS2. For this purpose, the base station on a transmitting antenna and a receiving antenna EAN SAN, while the mobile station MS1 MS5 controllable by an antenna switching AU comprises ... a for sending and receiving common antenna ANT. In the upstream direction (reception path), the base station BTS1, BTS2 receives, via the receiving antenna EAN, for example, at least one radio message FN with a frequency / time / code component of at least one of the mobile stations MS1 ... MS5, while the mobile station MS1 ... MS5 in the waste (reception path) via the common antenna ANT forward direction, for example, at least one radio message FN with a frequency / time / code component of at least one base station BTS1, BTS2 receives. The radio message FN consists of a wideband spread signal having a modulated carrier composed of data symbols of information.
In a radio receiving device FEE (receiver) is filtered the received carrier signal and frequency down-mixed to an intermediate-, in turn, is sampled and quantized in the other. After analog / digital conversion, the signal which has been distorted on the radio path due to multipath propagation, an equalizer EQL is supplied which compensates for the distortions of to a large extent (Stw. Synchronization of).
the transmission properties of the transmission channel TRC is then in a channel estimator KS tries to which the radio message FN has been transferred to appreciate. The transmission characteristics of the channel are indicated in the time domain by the channel impulse response. Thus, the channel impulse response can be estimated, the Funknach- (MS5 or the base station BTS1, BTS2 in the case of the mobile station MS1 ...) is Judges FN transmitting end assigned to a specific, configured as a training information sequence additional information in the form of a so-called mid-amble or associated ,
In a subsequent common for all signals received data detector DD each mobile station-specific Si contained in the common signal are in a known manner gnalanteile equalized and separated. After equalization and separation in a symbol-zuDaten converter SDW the available data symbols are converted into binary data. Thereafter, obtained in a demodulator DMOD from the intermediate frequency of the original bit stream, before the individual time slots are assigned to the correct logical channels, and hence the different mobile stations in a demultiplexer DMUX.
In a channel codec KC, the bit sequence obtained is channel-decoded example. Depending on the channel, the bit information of the monitoring and signaling time slot or to a voice time slot are assigned, and - in the case of the base station (Figure 5) - the control and signaling data and voice data together for transmission to the base station controller BSC one for signaling and speech coding / - decoding (speech codec) competent interface SS passed, while - in the case of the mobile station (FIGURE 6) - the control and signaling data from a competent for the entire signaling, and control of the mobile station control and signaling unit STSE and the voice data to one for the speech input and - ausgäbe designed voice codec SPC are passed.
In the voice codec of the interface SS in the base station BTS1, BTS2 the voice data in a predetermined data stream (for example 64 kbit / s stream in network direction or 13kbit / s stream of power direction). In a control unit STE complete control of the base station BTS1, BTS2 is performed.
In the downlink direction (transmit path), the base station BTS1, BTS2 transmits via the transmitting antenna SAN, for example, at least one radio message FN with a frequency / time / code component to at least one of the mobile stations MS1 ... MS5, while the mobile station MS1 ... MS5 in the upward direction (transmission path), for example, at least one radio message FN transmits via the common antenna ANT with a frequency / time / code component to at least one base station BTS1, BTS2.
The transmission path starts at the base station BTS1, BTS2 in
FIGURE 5 so that a monitoring and signaling time slot or a Sprachzeit- be allocated slot in the channel codec KC of the base station controller BSC via the interface SS control obtained and signaling data and voice data, and they are channel-coded into a bit sequence.
The transmission path starts at the mobile station MS1 ... MS5 in FIGURE 6 so that obtained in the channel codec KC from the voice codec SPC voice data and obtained by the control and Signalsiereinheit STSE control and signaling data to a monitoring and signaling time slot or a speech time slot to be assigned and these are channel-coded into a bit sequence.
The bit sequence obtained in the base station BTS1, BTS2 and in the mobile station MS1 ... MS5 is converted in each case in a data-symbol converter DSW in data symbols. Thereafter, the data symbols are each zeinrichtung in a Sprei- SPE with a subscriber-specific in each case
Code-spread. In the burst generator BG, comprising a burst assembler BZS and a multiplexer MUX is DA respectively added 10 according to the burst assembler BZS the spread data symbols, a training information sequence in the form of a Mitambel for channel estimation and in the multiplexer MUX the burst information obtained in this manner to the respective correct time slot set. Finally, the burst obtained is high-frequency modulated each in a modulator MOD and digital / analog converted before the signal obtained in this way as a radio message FN via a radio transmission device FSE (sender) to the transmitting antenna SAN or the common antenna ANT is emitted.
TDD telecommunications systems (Time Division Duplex) are telecommunications systems in which the Ubertragungszeitrah- men, consisting of several time slots for the downlink transmission direction (downlink) and the Aufwärtsübertragungs- direction (uplink) - is divided - preferably in the middle.
A TDD telecommunication system comprising tragungszeitrahmen such excess is, for example, the known DECT system [Digital Enhanced (previously: European) Cordless Telecommunication; see. News Elektronik 42 (1992) Jan. / Feb. No. 1, Berlin, DE. th U. Pilger "structure of the DECT standard," Be th 23 to 29 in conjunction with the ETSI publication ETS 3001 15-1... 9, October 1992 and the DECT publication of the DECT Forum, February 1991 Be 1 to 16].
FIGURE 7 shows a DECT transmission time frame having a duration of 10 ms, consisting of 12 "downlink, N -Zeitschlit- zen and 12" uplink w -Zeitschlitzen. For any bidirectional telecommunications connection at a predetermined frequency in downlink direction DL (Down Link) and upstream transmission direction UL (Up Link), according to the DECT standard a free pair of time slots with a "down-link" time slot ZS DO W N and a " uplink "Z SUP time slot selected in which the distance between the" downlink "-
Time slot ZS d0wn and the "Uplink" time slot ZS UP 11 half the length according to the DECT standard (5 ms) of the DECT transmission time frame is also.
FDD telecommunication systems (Frequency Division Duplex) are telecommunications systems in which the time frame consisting of several time slots, for the Abwärtsübertragungs- direction (downlink) in a first frequency band and for the uplink transmission direction (uplink) is transmitted in a second frequency band.
One FDD telecommunications system which transmits the time frame in this way is known as the GSM system [Groupe Speciale Mobile or Global System for Mobile Communication; see. Computer science spectrum 14 (1991) June, No. 3, Berlin, DE. A.Mann: "The GSM standard - the basis for digital European of specific mobile unknetze f" th Be 131-152 in connection with the publication telecom practice 4/1993, P. Smolka "GSM radio interface '- elements and Functions", pages 11 to 24].
The air interface of the GSM system knows a large number of the transmission service (bearer services) designated logical channels, such as an AGCH (Access Grant CHannel), a BCCH channel (Broadcast Channel, a FACCH channel (Fast Associated Control CHannel ), a PCH (patent went CHhannel), a RACH (Random Access cHannel) and (a TCH channel Traffic cHannel), whose respective function in the air interface Selle example in the publication computer science spectrum 14 (1991) in June, . No. 3, Berlin, DE; A.Mann: "the GSM standard - basis for digital European mobile networks ze", pages 131 to 152 in conjunction with the publication te- lekom practical 4/1993, P. Smolka "GSM radio interface - elements and functions ", pages 11 to 24 is described.
The biggest difference between the frequency and time level having operated in a coordinated, licensed mode GSM system, and also a frequency and time plane having DECT system in egg nem 12 uncoordinated, unlicensed mode is operated is in the way, as the physical resource "channel" is allocated to the respective Sytemteilnehmer or telecommunication subscriber.
In the coordinated, licensed telecommunications system, the channel allocation is controlled by a central instance, the network operator. This is possible because all is staying within a radio range of a base station mobile stations use the same time base, so be operated synchronously. The synchronous operation allows a clear definition of time slot boundaries and thus a clear separation of different telecommunication subscribers. Neighboring base stations need not be operated in synchronization, since the separation of channels are used in adjacent radio cells, is generally carried out by a frequency planning in the frequency plane. This A-rt of the channel allocation is called "Fixed Channel Allocation (FCA)".
In the uncoordinated unlicensed telecommunications system, where such a central instance for channel allocation is not present, the channels are first dynamically selected - "Dynamic Channel Selection (DCS)" - and then allocated. The frequency / time plane serves both the "Dynamic Channel Selection (DCS)" as well as for channel allocation as a platform or "pool". In such a system the handset regularly monitors the frequency / time plane and finally selects the frequency / timeslot combination is the least disturbed by interference occurring in the transmission channel. Because neighboring uncoordinated defined operating base stations and handsets are always asynchronous and therefore run into each other the time bases with each other or one another drift, often creates a situation where the degree of interference extends an unacceptable level ER. In this case, a handoff of the Telekommun- must cation compound - a handover "- to a different channel, say einge- another frequency / timeslot combination leads 13 and are initiated is referred to in such a case of one." Intracell handover " ,
Since the WCDMA / FDD operation and the TDCDMA / TDD operation are common application in the context of the UMTS scenario (3rd mobile radio generation or IMT-2000), is next to an efficient use of the logical channels and the transmission services ( bearer handling) particularly from the above, the realization of a suitable "handover" - procedure for telecommunication systems with wireless, based on code and time division multiplex telecommunication between mobile and / or stationary transmitting / receiving appliances indispensable.
Which the object underlying the invention is to provide for telecommunication systems with wireless, based on code and time division multiplex telecommunication between mobile and / or stationary transmitting / receiving appliances after displaying of a "handover" safe "handover" procedure.
This object is solved by the features of claim 1.
The basis of the invention idea is that - fishing gear in the for telecommunication systems with wireless, based on code and time division multiplex telecommunication between mobile and / or stationary transmitting / receive in both the TDD mode as well as - according to claim 1 is the FDD mode 1) determined during a first phase of a "handover" procedure, displaying a "handover", a "handover" -Zeitschlitzpaar from a stationary transmitting / receiving device, 2) during a second phase of the "handover M procedure, the initiation of a "handover", the associated stationary transmitting / receiving device "handover Request" a first message to the stationary transmitting / receiving unit transmits mobile transmitting / receiving devices, with which the static 14 tionary transmitting / receiving device the mobile transmitter / receiver devices, the "handover" -Zeitschlitzpaar tells and the stationary transmitting / receiving device "handover request" the first message as long as the mobile Se nde- / reception apparatus transmits, to all associated with the stationary transmitting / receiving unit have confirmed by the first message mobile transmitter / receiver devices initiating the "handover", 3) during a third phase of the "handover" procedure, performing a " terminates handover "procedure handover" the ".
Advantageous developments of the invention are specified in the subclaims.
An embodiment of the invention will be explained with reference to Figures 8 to 10 degrees. These show:
FIGURE 8 is a relation to the time frame in FIGURES 1 to 3 and the DECT transmission time frame in FIGURE 7 with respect to the time slot number (modified) TDD Zeitmultiplexrah- men,
FIGURE 9 on the basis of the time-division multiplex frame of FIGURE 8, a channel assignment table for channels with a frequency, code and time division multiplex component,
FIGURE 10 is a Meldungsflußdiagramm a "handover" procedure.
FIGURE 8 shows, starting from the time frame in FIGURES 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 l ... ZS Λ 8, wherein the first four time slots ZS λ l ... ZS for the downlink transmission direction DL and the second four time slots ZS ZS 5 ... λ 8 for the Aufwärtsüber- tragungsrichtung UL are provided. The number of time slots has been merely for purposes of illustration for the Kanalzuweisungstabel- 15 le in FIGURE reduced from "16" according to Figures 1 and 3 to "8" 9 and has no restrictive, limiting effect on the invention. On the contrary - the number of time slots may - like the other physical resources (eg code, frequency, etc.) - Rather be varied more or less arbitrarily, depending on the telecommunications system.
Figure 9 shows on the basis of the time-division multiplex frame of FIGURE 8, a channel assignment table for channels with a frequency QUENCY, code and time division multiplex component. The time division multiple access component of this table comprises the time slots ZS ZS Λ 1 ... 8 ultiplex- with the TDD arrangement according to FIGURE 8. The frequency component comprises 12 frequencies FR1 ... FR12, while the code multiplex component 8 codes (pseudo random signals) C1 ... C8 contains.
tion are in a first frequency FR1 as "bearer services" trained transmission services, such as logical channels of the telecommunications system, such as the control channel for signaling, the AGCH channel, the BCCH channel, the PCH channel, which
RACH channel, the TCH channel and / or the FACCH channel, which are required in the telecommunications system in the downlink and / or uplink direction, bundled in a plane spanned by the codes C1 ... C8 code level. This combination proves for the aforementioned telecommunication systems as useful, as an unnecessary allocation of time slots, so the resource "time" is avoided.
FIGURE 9 shows a preferred embodiment in accordance with the processing at the first frequency FR1 in the Abwärtsübertragungsrich- in a first time slot ZS Λ 1 than a predetermined (agreed) first selection time slot and in the upward transmission direction in a fifth time slot ZS Λ 5 as a fixed, predetermined (agreed) second Auswahlzeit- preferably slit in each case all codes C1 ... C8 are used for the bundling of said transmission services. It is of course also possible less or if more co CO>> h-> H> cπ o o cπ Cπ O π
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P d CSJ cn P IV H> N Φ rt tr
•> • Φ dd CΛ 3 lJ d) d CΛ Φ d Φ
• d CΛ rt rt o \ -> ι-3 rt d P XI ι-J Φ t cx φ cn XI CΛ • τ) P 1 d Σ: n P) o Φ Φ tr cn Φ • cx Φ dd rt P > O 3 N d φ φ φ Φ x cπ α cn Hi P- tr d tr rt tr P- H 1 d lJ cx. XI 3 50 d Φ ι-lJ CΛ d JM P- Φ φ d = φ d Φ Φ rt P- cn Cl d d Φ 3 X) <d J cn rt o Hi Φ rt CΛ d cx * OMNP öd dd P) P J IV Φ XI φ φ P d cn d CΛ P J rt Φ oo CΛ P Φ o ^ tr d rt d ^
X) d φ O Φ P- P- CX d XI cn CΛ φ d lJ Φ tr Φ φ lJ iJ cn lJ N d
Hi 3 * Φ XI cn d 3 d cx CΛ P- O N lJ P * d
§ 3 ι-J Φ Σ PJ: PJ Φ
? P rt rt P φ M d r Φ rt O rt Σ J <<M d PJ: nd Λ ts. Φ Φ dd since cn rt P lJ PJ d Φ <Φ d P φ Hi tr o P o P CΛ
P- JX d lJ M φ CS3 o O rt PJ d <Φ P- P- o φ MO XI α dd X). * D tr
D Φ P- P- Φ dd lJ dt φ P- lJ CΛ CΛ rt H Φ tr o M φ Φ Φ nd M 1 d
P Φ φ ιv Ό d P * cn rt o P <ts: tr rt rt Φ I * rt d cn n) XI 3 d lJ PJ Ό x cx d rt l_J. ddo Φ t * P lJ cx φ Φ φ X tα cn Φ
Φ φ rt Φ P φ φ Φ dn CΛ M - «• d 1 φ tr P P P O Hi 1 cn tr
P * φ Φ n
3 N lJ (X XI o <! <Tr cx <CΛ N tr Hi P 1 cx d * 5 ^ cn P * l H
Σ: cn O Φ P Φ Φ * a CΛ P- φ Φ Σ d Hl: Φ: rt P- P- PJ d lJ J
N Φ rt PJ dd 3 d ι-3 rt Φ J M CSI d P ds lJ Ml d lJ Φ d φ d cx o
Σ: P Φ CΛ rt P φ dd Φ ^ * tr Cπ cx d X) lJ tr Φ cx cx CΛ P) M Hi o
Φ rt tr rt Hi Ό P- P- - • d φ cn Φ P J <φ cx P o Φ h -1 d X! N
P Φ cn Φ PJ = N cn Ό φ P • ^ dd 3 cn <CΛ Φ Φ d φ Φ dodd • Φ rt d ι-J P Φ Σ: rt Φ M Σ: lJ cx L_J. XI N Φ CΛ IM d cx cx d XI 1 tö OJ cn
Φ 1 d rt P- Φ Φ 1 Φ Φ d Φ CΛ φ φ φ o XI dd 1 P- P- P * d 1 1 1 1 CΛ M 3 Φ CΛ
1 1 1 1 1 1 1 1 x N rt d
17 time slot ZS 2 six codes - a first code Cl, a second code C2, third code C3, a fourth code C4, a fifth code C5 and a sixth code C6 - and in the uplink transmission direction, in a sixth time slot ZS Λ 6 again, the six codes C1 ... C6, while the second group of telecommunication connections G2 at the second frequency FR2 in downlink direction in a fourth time slot ZSM the first code Cl and in uplink transmission direction at an eighth time slot ZS λ 8 again the first code Cl occupied.
The fourth time slot and the second time slot ZS ZS Λ 2 are "downlink" timeslots ZSDOWN, during the sixth time slot ZS Λ 6 and the eighth time slot ZS λ 8 "Uplink" -Time slots ZSU P.
For each telecommunications link in the groups Gl, G2, a first distance between the AS1 "downlink" -Time slot ZSDOWN and the "Uplink" time slot ZSU P is - according to the prior art (see FIG. 7) - as long as the half
TDMA frame ZMR. The distance AS1 is thus a fraction of the length of the time-division multiplex frame ZMR, wherein the fraction has a value of 0.5.
In the second call scenario is the first VSZ2
Group of- telecommunication lines Gl to a fourth frequency FR4 in the downward direction of transmission in the fourth time slot ZS, the six codes C1 ... C6, and in uplink transmission direction in a seventh time slot ZS Λ 6 again, the six codes C1 ... C6, while the second group of telecommunications connections G2 on the fourth frequency FR4 in downlink direction in a second time slot ZS Λ 2, the codes C1 ... C4, and in uplink transmission direction in the fifth time slot ZS λ 5 has the first code Cl and the second code C2. 18 The fourth time slot ZSM and the second time slot ZS X 2 are - like the first connection scenario VSZ1 - "downlink" - time slots ZSDOWN, during the seventh time slot ZS λ 7 and the fifth time slot are ZS 5 "Uplink" timeslots Z SUP.
For each telecommunications link in the groups Gl, G2 a second distance is so long AS2 between the "downlink" -Time slot ZSDOWN and the "Uplink" time slot Z SUP, as a fraction (fractional distance) of the length of the time multiplex plexrahmens ZMR, said fraction is sized and larger or smaller than the value 0.5, said second distance AS2 is fixed.
In the third call scenario VSZ3 the first group of telecommunications connections Gl is in downlink transmission direction on a sixth frequency FR6 in the second time slot ZS 2, 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, and a seventh code C7 and an eighth code C8, while the second group of telecommunication connections G2 in the downward transmission direction to the sixth frequency FR6 in a third time slot ZS λ 3 the codes C1 ... C3, and in upbeat - tragungsrichtung on the fifth frequency FR5 in the fifth time slot ZS Λ 5 the codes C1 ... C4 occupied.
The second time slot ZS Λ 2, and the third time slot ZS Λ 3 are "downlink" timeslots ZSDOWN, during the eighth time slot ZS Λ 8 and the fifth time slot ZS λ 5 "Uplink" -Time slots are Z SUP.
For each telecommunications link in the groups Gl, G2, a third distance is AS3 between the "downlink" -Time slot ZS D OWN and the "Uplink" time slot Z SUP a fraction (fractional distance) of the length of the time-division multiplex frame ZMR, wherein the fraction of each is dimensioned such that the third distance is AS3 variable. 19
In the fourth call scenario VSZ4 the first group of telecommunications connections Gl is in downlink transmission direction of an eighth frequency FR8 in the fourth-th time slot ZSM the first code Cl and in Aufwärtsüber- tragungsrichtung to a ninth frequency FR9 in the sixth time slot ZS Λ 6, the seven codes C1 ... C7, while the second group of telecommunication connections G2 the first code Cl and in the uplink transmission direction on the ninth frequency FR9 in the fifth time slot ZS Λ 5 first in the downward transmission direction to the eighth frequency FR8 in the third time slot ZS Λ 3 code CI occupied.
The fourth time slot ZSM and the third time slot ZS 3 are "downlink" time slots ZS DOWN, during the sixth time slot ZS λ 6 and the fifth time slot ZS'5 "Uplink" -Time slots are Z SUP.
For each telecommunications link in the groups Gl, G2 is a fourth distance AS4 between the "downlink" -Time slot ZS DO W N and the "Uplink" time slot ZS UP a fraction (fractional distance) of the length of the time-division multiplex frame ZMR, wherein the fraction is in each case dimensioned so 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 FR11 in the downward direction of transmission in the fourth time slot ZSM the first code Cl and the second code C2 and in the uplink transmission direction in the fifth time slot ZS λ 5 again the first code Cl and second code C2, while the second group of telecommunication connections G2 at the eleventh frequency FR11 in the downward transmission direction in the first time slot ZS 1, the codes C1 ... C5 and in uplink transmission direction in the eighth time slot ZS Λ 8, the codes C1 ... is C3. 20 The fourth time slot and ZSM the first time slot ZS λ l are "downlink" time slots ZS D OWN, during the fifth time slot ZS λ 5 and the eighth time slot ZS Λ 8 "Uplink" -Time slots ZSU P.
For each telecommunications link in the groups Gl, G2, a fifth distance between the AS5 "downlink" -Time slot ZSDOWN and the "Uplink" time slot ZS UP as long as a fraction (fractional distance) of the length of the time multiplex plexrahmens ZMR wherein the fraction such that the second distance is variable AS2.
FIGURE 10 shows a Meldungsflußdiagramm a "handover." - procedure The "handover" procedure basically consists of three phases, as the display of a "handover" (handover indication) is called a first phase, a second phase, as introducing or initiating a "handover" (handover initiation) is named ``, and is referred to as the execution of a "handover" (handover Executi- on) that run in the order given a third phase.
In the case of a deterioration in the quality of the service to be transmitted [Quality of Service (QoS)] is sisstation of a Ba BS a "handover" is displayed, that is, a first phase of the "handover" procedure starts. The deterioration of the quality of the to be transmitted service [Quality of Service (QoS)] can be alternatively determined from a mobile member, a first mobile part MT1, a second handset HS2 or an nth handset MTn, that then this deterioration in the base station BS , eg via the FACCH channel communicates. In this case, the base station BS with respect to the "handover" procedure of the "master", while the handset MTl ... is MTn the "slave". However, it is also possible that the mobile part with respect to the "handover" procedure of is "Master" and the base station of the "slave". ω CΛJ ro M M>
Cπ cπ O O Cπ cπ
cn cx d * CΛ P cx CΛ CΛ n P P Φ § 3 d * CX P t≥x XI P * TJ rt? _ Α tsi öd d α JX CX IV N Φ Σ; 3 tr φ tr P- p- PJ odd d 3 M 3 O Φ rt Φ Φ Φ P- oo Cl O d P- PJ: P- tr 3 Φ tr φ Φ rt lJ φ d φ Φ O dod d 3 ι- <cn P n cn φ <<3 d tr rt
P * lJ P x M P H lJ IV tr XI N 1 § PJ rt X φ φ 3 d:
P- rt P * σ φ CΛ rt O φ Λ 'td d Φ öd α d Hi * *: cn 1 • * N lJ H 5 d tr rt rt α o H rt 3 P * IJ d lJ cx cx PJ PJ \ cx cx rt X lJ P d Hi tα n ^ 5 tα Σ: * d Φ Φ ≥ tα:
N Σ; PJ: N 3 PJ cn P rt Φ cn ts. Φ φ Φ Φ P- P- PJ d O tr Φ PJ J 1 P- PJ cx 3
X) X * d XJ σ d J x Φ P- rt P- φ d 3 lJ lJ M PJ d IV nddd P * IS. -τ) ^ rt d P 00
P 1 rt o P * cx P P> cx rt φ iJ PJ M cx φ OJ
PJ) d Φ Φ o cn cn P CΛ cx cn J
P) P- PJ Σ: rt CΛ d d φ d öd CΛ rt Φ M n P n rt rt 3 o rt o Φ P- rt PJ o O cn & lJ d N lJ P> XI cn d n rt cn M d tr d PJ φ P O <N <rt N P XI <φ N
Φ IV d Φ I * d £ N n P) O Mi Hi P CΛ O Φ X! P φ <V cn φ O Φ φ Φ cn X cn P φ x CX Φ "φ tc rt tr O o Φ XI rt d Φ M PJ d ι- (tr O P dd lJ P *
Φ d Φ P> PJ P 1 P P * M cx cn cn - i J - * PJ tr d cn "" "tr 3 ω t Si 3 d IV lJ 1 d CX d rt ^ o P XI 3 Φ? 1 P N 1 M α CΛ P 1 lJ N Φ 1 Φ Φ
O φ d (X d cn PJ PJ rt d lJ N PJ P- 3 Φ S Φ Φ P- cx INI φ d Φ P d TSJ
P- P * CX CX φ Φ od I- * O d N d O φ rt P- P- Φ n od 3 tr rt P- φ cn
P) P rt ts. iJ lJ <XI tr PJ P- P- P tr od α * * P rt Φ P- Φ x N cx rt ö P x) Φ d Φ cn rt CX φ cn Φ P 1 CΛ α no Φ rt cn d rt PJ XI φ Ό φ cn P rt P * P * O χι Φ P ι-J rt lJ £ Φ P Φ rd • - lJ cn PJ PJ O CΛ do P- MP) 3 O φ cn φ d φ tr Φ cn rt PJ Φ P "lJ rt P φ φ Φ cn Ml d tr do Hi O d P) tr dn P 1 Φ
I * lJ CΛ XJ d \ tr N d P dd M • S Hi tr tr Σ: d M s c n tr cn cn
P CΛ od ts. Σ: d d XI PJ Φ Σ d = P P * 1 PJ rt rt P- X Σ: tr rt rt tr tα d £ φ P- PJ d cx φ X ^^ Hl o P- tr rt P- cx d PJ tr Φ P- Φ rt N
N P- Φ P> P XI Φ P- H x P) φ P) ö d CΛ Hi Φ Φ rt rt P * N α d Φ Φ cn rt P- N tα Φ cn rt P- d cx Φ M 3 φ d Mi P> P- Φ lJ x i 3 N * d Q) (x lJ P * x) N cn rt PJ ds cx cx cx x CΛ d Φ lJ tr rt o P- rt P> χi IV 3 O Φ x !P) σ Ό φ d
PJ φ φ o N dn cx Φ σ cn CΛ o P> Φ ^ Φ XI -JP) PJ P <P Φ P) Φ PJ cx
I * CX j Φ lJ d tr Φ do rt <dd 1 φ) M σ PJ d 1 φ rt rt d M cn PJ J o
X Φ Φ d Xt P * d) Σ; Φ φ 1 S CΛ N XI Φ o lJ Hi INI ^ lJ cn cn • lJ d <
Φ cn d M P £ dd M cx σ o rt Σ: Φ cn Σ: φ φ cx Φ tr Φ di cx d S o rt £ P * S 1 Φ P P_ PJ Φ dd cn P CX Hi φ MP > PJ M
3 1-3 XI 1 φ Hi tr o N cx P * Φ 1 Φ cn H P • d 5 P- P- rt PJ • τ) Φ cn ddd - *
P Φ tsi CΛ o J tr P P P * Φ Σ; φ CΛ cn P- £ p M cn cx fυ d tsi d cn rt rt rt P Φ 1 S h CΛ P- PJ P * φ IV cx dd φ cn Φ Φ cn cn d oo rt cn x
M Φ P- 1 l- * 3 3 Φ PJ rt P * d n P- rt rt 1 Φ IV ι- (φ tr (XN • X Φ rt φ rt φ d cx IV) rt rt φ ι J-3 . 1 d rt Φ n d cx 2 3 I - ** P Φ P) M M P- tr
Φ o PJ cn I * rt N Φ Φ P- P- tsi X! cn tα - '? Σ: tr CX 1 φ φ P cx d PJ Φ do
H 3 "d φ O P- rt P- CΛ rt φ P * 1 O Φ P- P) Φ INI d ^ rt d Φ cx P 1 P φ tr
[J3 Hl IV tr o Φ P- tr * A cn cn rt P- Φ n ö N oh dd M cn öd d P * od CX 3 tα Φ α rt PJ rt P * d cx Φ Φ P- P- PJ O • "<cn cx cx
PJ dx P w Φ P P d £ Φ cn) P d PJ Φ d rt 3 Σ: CX Λ φ rt CX Φ 5 ^! P- P- tn Φ rt 3 d φ rt rt rt HMO d CΛ d Φ P M Φ PJ PJ 3 φ
P iv 3 N d XI £ P "tr cx NP *" rt CΛ Hi Φ o <J P * CΛ CΛ PJ d cn d cn PJ X) d .- .. öd Φ Ml • dd P * 1 o X ) cn • p P M d tr φ P cn CΛ CX PJ dd cn rt 03 P) P ö PJ rt M> • P) P <PJ 3 d Hi P * M d rt -X) tr P - PJ rt P n PJ IV J CΛ φ • • cn rt φ P) P d> O P IV IV tα J cn tr φ φ PJ cn
P> o π lJ PJ rt P * P • P- S NMM d P Φ 1 X Φ * lJ rt PJ rt PJ rt cn d d rt P- φ rt Φ CΛ d X • Ml cn Φ rt rt PJ 3 N tr \ d P P φ cn rt O cn cn
P- ω 1 CΛ CΛ P- d sd rt cn cn CX CX 0 PJ d JM INI cx rt O φ Φ tr cn d p
ONPO 1 rt • Ml • et Φ Φ Φ d P 1 rt CX cn Φ od P rt d P)) rt d Φ P> Hi d ö PJ PJ d cn xo d = 3 Φ Φ o Φ P * P * 3 <P * (X ^ P Φ tr P) n H
P do CΛ P rt t≥, s rt d σ cx <O O cn rt Φ Φ dd JX Φ d P * J rt rt td PJ lJ N φ P PJ CX P P * Ml φ φ 5 P- Φ d CX CΛ P- l
CΛ 1 rt Φ d O P rt o Φ CΛ M ö S -J CΛ MP) M tdn • *: cx rt
P * M O r XI Φ ι-3 Φ cn φ P: P * O
P cn d tr φ d * P rt rt o Φ d Φ cn tr Φ 1 d; rt cn d
<P d rt rt cx φ 3 M Σ: ι- (P P * P * P> tα ι-3 rt φ dd 1 Φ öd cx • τ) P Öd IV PJ: d rt o - - Φ d P- Φ PJ Φ ffi cx cx Φ öd lJ Λ Φ O φ o CΛ XI 1 M tr 1 σ rt φ P- P- PJ d Φ CΛ rt 1 M 1 1 3 t * PJ J d 1 d 1 Φ cn 1 1 1 1 1 1
22-bound handsets MTI ... MTn confirmed by the first message Ml initiating the "handover".
The problems associated with the base station BS handsets MTl ... MTn change if the handsets concerned MTl ... MTn have to transfer ongoing data after receiving the first message Ml directly from the Telekommunikationszeitschlitz- couple to the "handover" -Zeitschlitzpaar . Here, the data transmission in the telecommunication time slot pair is det terminate and in the "handover" -Zeitschlitzpaar seamlessly (seamless) continued.
When the handsets concerned MTl ... MTn, however, have to transfer ongoing data, then the respective mobile part MT1 ... MTn transmits a second "Handover Confirm" message M2 on a Signalisierugskanal to the base station BS.
The base station BS receives the one hand, thus simultaneously data in the telecommunication time slot pair and the "handover" - time slot pair and on the other hand, the second message M2 The.
Initiating the "handover" by the first message Ml is viewed from the base station BS ultimately confirmed when - in the first case - that of the respective handset MTI ... MTn on the "uplink" time slot of the "handover" - transmitted time slot pair data is received from the base station BS without error, or if - the base station BS receives the second message M2 - in the second case.
The second phase of the "handover" procedure initiating egg nes "handover" is complete when all handsets
MTI ... MTn confirmed by the first message Ml initiating the "handover".
In the third phase, the "handover" procedure, the execution of a "handover", is then after all handsets
Have confirmed the initiation of the "handover" by the first Mel ¬ dung Ml MTl ... MTn, the "handover" so -Zeitschlitzpaar 23, is finally the transmission in the existing telecommunications pair of time slots as a new telecommunications time slot pair terminated.
Priority Applications (4)
|Application Number||Priority Date||Filing Date||Title|
|PCT/EP1999/001316 WO1999044383A1 (en)||1998-02-27||1999-03-01||Telecommunications system with wireless code and time-division multiplex based telecommuncation between mobile and/or stationary transmitting/receiving devices|
|EP19990913203 EP1059012A1 (en)||1998-02-27||1999-03-01||Telecommunications system with wireless code and time-division multiplex based telecommuncation between mobile and/or stationary transmitting/receiving devices|
Applications Claiming Priority (1)
|Application Number||Priority Date||Filing Date||Title|
|EP19990913203 EP1059012A1 (en)||1998-02-27||1999-03-01||Telecommunications system with wireless code and time-division multiplex based telecommuncation between mobile and/or stationary transmitting/receiving devices|
|Publication Number||Publication Date|
|EP1059012A1 true EP1059012A1 (en)||2000-12-13|
Family Applications (1)
|Application Number||Title||Priority Date||Filing Date|
|EP19990913203 Withdrawn EP1059012A1 (en)||1998-02-27||1999-03-01|
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|EP (1)||EP1059012A1 (en)|
|JP (1)||JP2002505563A (en)|
|KR (1)||KR100377661B1 (en)|
|CN (1)||CN1298616A (en)|
|AU (1)||AU3142599A (en)|
|RU (1)||RU2214070C2 (en)|
|WO (1)||WO1999044383A1 (en)|
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- 1999-03-01 EP EP19990913203 patent/EP1059012A1/en not_active Withdrawn
- 1999-03-01 CN CN 99805566 patent/CN1298616A/en not_active Application Discontinuation
- 1999-03-01 WO PCT/EP1999/001316 patent/WO1999044383A1/en not_active Application Discontinuation
- 1999-03-01 AU AU31425/99A patent/AU3142599A/en not_active Abandoned
- 1999-03-01 RU RU2000124529/09A patent/RU2214070C2/en not_active IP Right Cessation
- 1999-03-01 KR KR20007009522A patent/KR100377661B1/en not_active IP Right Cessation
- 1999-03-01 JP JP2000534018A patent/JP2002505563A/en active Pending
Non-Patent Citations (1)
|See references of WO9944383A1 *|
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