CN1264523A - Radio transmission method and wireless telephone especialy for digital reinforced wireless telephone standard - Google Patents
Radio transmission method and wireless telephone especialy for digital reinforced wireless telephone standard Download PDFInfo
- Publication number
- CN1264523A CN1264523A CN98807372A CN98807372A CN1264523A CN 1264523 A CN1264523 A CN 1264523A CN 98807372 A CN98807372 A CN 98807372A CN 98807372 A CN98807372 A CN 98807372A CN 1264523 A CN1264523 A CN 1264523A
- Authority
- CN
- China
- Prior art keywords
- signal
- signalling
- transmission
- interruption
- cordless telephone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/725—Cordless telephones
- H04M1/72502—Cordless telephones with one base station connected to a single line
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
- H04B7/2656—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for structure of frame, burst
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/08—Details of telephonic subscriber devices home cordless telephone systems using the DECT standard
Abstract
The present invention relates to a radio transmission method between a transmitter apparatus and a receiver apparatus, wherein said method uses a service channel (area B) for transmitting voice signals and/or data signals as well as a signalling channel (area A) comprising an error correction symbol for transmitting signalling data. When a signalling pause is detected, the transmitter apparatus sends an identification signal for the signalling pauses (P) to the receiver apparatus through the signalling channel. The signals received during the reception of the identification signal for the signalling pauses at the service channel (area B) are not used by the receiver apparatus. Since the signalling channel includes an error correction, no signal can be reliably transmitted during the signalling pause at the receiver apparatus, thus avoiding the transmission errors that may occur upon transmission in the service channel during the signalling pause or subsequent to the actuation of a mute key.
Description
The present invention relates between transmitting apparatus and receiving equipment a kind of radio transmission method and especially according to a kind of cordless telephone of DECT (Digital Enhanced Cordless Telephone) standard.
More and more being subjected to everybody according to the digital cordless phone of dect standard likes.Technical specification is for example at work David, and Benter shows " Digitale Mobilfunksysteme (digital mobile radio system) ", and the Stuttgart is described in 1996, the 8.1 chapters.Outdoor interface by the DECT definition builds on the basis of FDMA (frequency division multiple access) and TDMA (time division multiple access) combination.Frequency spectrum for domination is divided into 10 carrier frequency with each 1728KHz channel spacing from 1800MHz to 1900MHz.Each carrier frequency respectively is subdivided into composition and has 24 time slots that a length overall is the frame of 10ms as what describe at accompanying drawing 1.12 channels at first are intended for the descending connection from the moving-member to the fixed station, and 12 time slots subsequently are intended for the up connection between fixed station and the moving-member.Duplex connects by a pair of time slot, and for example time slot 11 and time slot 23 form.And up connection and the descending Duplex Spacing that is connected by each 5ms are separated from each other.
Fig. 2 is from magazine, and parts (Components) 31 are rolled up (1993), the 6th phase, the 215th to 218 page; S.Althammer, D.Bruckmann: " Hochoptimierte IC ' Sf ü r DECT Schnurlostelefone (integrated circuit that is used for the height optimization of DECT cordless telephone) " set out base station BS that cordless telephone apparatus is shown and principle electrical circuit structure of moving-member MT.Base station BS and moving-member MT have in order to be used to send and radio unit FKT and signal handling equipment SVE and the central controller ZST of the antenna ANT arranging of receiving radio signals according to this, and they are connected to each other according to illustrated mode.In radio unit FKT, mainly comprise known equipment such as transmitter SE, receiver EM and synthesizer SYN.In signal handling equipment SVE, comprise encoder/decoder CODEC in addition.Central controller ZST both also had installation according to the [reference (1): Unterrichtsblaetter-Deutsche Telecom. (Germany's communication report), volume 48,2/1995, the 102-111 page or leaf of OSI/ISO-hierarchical mode for moving-member MT for base station BS; (2) ETSI-Publikation (publication) ETS 300175-1..9, October 1992] the microprocessor μ P of the procedural model PGM that sets up, a signal control component SST and a digital signal processor DSP, they are connected to each other according to illustrated mode.From level, only represented to be important initial 4 layers directly to base station BS and moving-member MT according to the hierarchical mode definition.Signal control component SST constitutes as clock switch controller TSC in base station BS, and constitute as burst mode controller BMC at moving-member MT.At two signal control component TSC, the main difference between the BMC is: compare the function of exchange (switching function) that the signal control component TSC commitment of base station special use is outer with the signal control component BMC of moving-member special use.
Operational mode on the aforementioned circuit unit principle is for example at magazine, and parts 31 (1993), are described in the 215-218 page or leaf at the 6th phase.
If people consider as previously mentioned, have 10 carrier frequency can supply domination, then total capacity adds up to 120 duplexing channels.So the DECT cordless system selects to have separately the preferably channel of quality of connection automatically.
The bottom of Fig. 1 simply illustrates the composition of the single time slot with 416.6 μ s duration of suitable 480 total.At first exist to have 60 protection frequency band, so that adjacent time slot is separated reliably.Task synchronously (S-district) by 32 branches in 420 that stay, and 4 branches are tasked parity control (X-district).64 branches are tasked signaling channel (A-district), wherein have 16 again and distribute to error code, for example Cyclic Redundancy Check.Stay 48 are available for the signaling domination, for example are used to the information that connects, and the exchange identification code is transferred to another network cell (transfer).Therefore the signaling rate of duplexing channel is 64/10 milliseconds=6.4 kbps.The data of transmitting in signaling channel prevent error of transmission by error correction bit.320 of Traffic Channel (B-districts) are not subjected to preventing error of transmission specially in contrast.Transmission rate in Traffic Channel is 32 kbps.
Learn a kind of method and apparatus of the wireless transmission that is used for voice signal and the same radio channel of data-signal between transmitting apparatus and receiving equipment from DE-195 15 546 A1.In transmitting apparatus data-signal be used at least one control signal that identifiable language interrupts together through same radio channel and the same transmission of voice signal that is used for receiving equipment, wherein data-signal separates with control signal and exports during voice interruption.Data-signal also can send on same radio channel and receive when the language interruption occurring and not sending voice signal in this manner.This causes making full use of the radio transmission path relevant with message transmission in two transmission equipments.
Learn when carrying out the phone connection with cordless telephone from DE-42 36 088 A1, a kind of method that reduces the interference effect of bad quality of voice transmission, wherein be used to follow the DECT-A district in groups of link information to be responsible for the district, and when wherein carrying out telephone relation between the base station of cordless telephone parts and moving-member, the squelch circuit of settling in by the relevant parts at cordless telephone at the noise made in coughing or vomiting warbling of the oriole noise that is occurred by error code between voice ADPCM transmission period and interference noise according to the DECT-standard (noise elimination of voice signal suppresses) is stoped.
If when in DECT-cordless telephone-moving-member, signal interruption occurring, for example the language based on the cordless telephone user interrupts, ambient noise can be transferred to fixed station then or in the B channel, be transferred to the phone partner subsequently, or terminating machine transmits a purified signal (noise elimination suppresses signal, forms by 1 entirely) to the conversation partner when collecting signal interruption.Under the 1st kind of situation, ambient noise is as being received of quite disturbing, especially when the sensitivity of pick-up is mated with the signal level of collection.If when the 2nd kind of situation purified signal transmitted in Traffic Channel (B-district), then this signal is decoded and receiving on the loud speaker during at error free reception and produce " static state " as normal audio data at receiving terminal.If when error of transmission appears in this inhibition noise elimination-signal, then replace this signal and strong interference noise occurs.
Therefore task of the present invention is to continue the method and the cordless telephone of the wireless radio transmission of development between transmitting apparatus and receiving equipment, so that improve transmission quality.Especially should prevent from when signal interruption, to occur interference signal or interference noise.
The present invention proposes a kind of radio transmission method between transmitting apparatus and receiving equipment, wherein when interrupting, acquired signal through signaling channel (A-district) signal interruption-identification signal is transferred to receiving equipment by transmitting apparatus, not be used in the signal that receives in the Traffic Channel during sending interruption-identification signal receiving on the receiver thereupon, especially do not decode fully and/or amplify.Because signal interruption-identification signal is transmitted in preventing the signaling channel of error of transmission (A-district), it can reduce the appearance of error of transmission greatly when signal interruption.
Method of the present invention especially can be used for the digital cordless phone according to the DECT-standard.
The present invention proposes a kind of cordless telephone, and it has device that acquired signal interrupts and the device of transmission signals interruption-identification signal when collecting signal interruption.
The operation logic of the inventive method is described as follows with demonstrating with reference to the accompanying drawings, that is:
Fig. 1 schematically show use in the inventive method the time frame structure an example;
Fig. 2 illustrates the block diagram according to the known cordless telephone apparatus of DECT-standard.
Cordless telephone generally uses in the combination by base station and one or more mobile radio stations.By mobile radio station signal is transferred to the base station through radio, the base station is connected with the phone fixed network and signal is transferred to the conversation partner, and this partner can use a fixed network phone, cordless telephone or mobile phone or analog.Predetermined time slot 0 to 11 is used for from the base station to the moving-member transmission signals, and predetermined time slot 12 to 23 is used for the signal transmission of from the mobile device to the base station (up connection).Base station and moving-member can constitute as shown in Figure 2.Yet the central control unit ZST of moving-member MT additionally has identification signal to interrupt, and promptly interrupts or be in a kind of equipment of the analog of certain incoming level below the fixed value at the user speech of moving-member.Pause if recognize signal interruption or signal, then in the A district, i.e. transmission signals interruption-identification signal P in the signaling channel of time slot.Fixed station is identified in the signal of signal interruption-identification signal P in the A district and interrupt decoder, amplification and/or switching reception in B district.Because the signaling data in the A district prevents error of transmission by error correcting code (CRC), so transmission signals interruption-identification signal reliably.Perhaps be included in transmission in the B district-reception data of error correction coding not and disturb therefore and switch through, so on receiver, cannot hear without fixed station.Therefore the transmission quality of DECE cordless telephone system of the present invention is improved.
Claims (5)
- Transmitting apparatus (BS, MT) and receiving equipment (MT, BS) between the method for wireless radio transmission, wherein,For transmission of speech signals and/or data-signal provide a Traffic Channel (B-district) and for the command transmitting data provide a signaling channel (A-district) that the error correction symbol is housed, it is characterized by,When collecting a signal interruption, from transmitting apparatus (BS, MT) send a signal interruption～identification signal (P) to receiving equipment (MT through signaling channel, BS), (MT BS) upward no longer handles the signal that receives in Traffic Channel during received signal interruption-identification signal (P) at receiving equipment immediately.
- 2. according to the method for claim 1, it is characterized by,To (MT, BS) signal that receives in Traffic Channel during received signal interruption-identification signal is not decoded and/or amplified at receiving equipment.
- 3. according to the method for claim 1 or 2, it is characterized by,Transmitting apparatus (BS, MT) and receiving equipment (MT BS) is cordless telephone according to the DECT-standard.
- 4. the cordless telephone that is used for telephone system wherein provides a Traffic Channel (B-district) for transmission of speech signals and/or data-signal and for the command transmitting data provide a signaling channel (A-district) that the error correction symbol is housed, it is characterized by,Cordless telephone (BS, MT) have equipment that acquired signal interrupts and equipment that when collecting signal interruption, is used for transmission signals interruption-identification signal (P) (ZST, SVE, FKT, ANT).
- 5. according to the cordless telephone of claim 4, it is characterized by,(BS MT) is a kind of digital cordless phone according to the DECT-standard to cordless telephone.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19730984.4 | 1997-07-18 | ||
| DE19730984A DE19730984A1 (en) | 1997-07-18 | 1997-07-18 | Radio transmission method and cordless telephone, especially for the DECT standard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1264523A true CN1264523A (en) | 2000-08-23 |
Family
ID=7836206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98807372A Pending CN1264523A (en) | 1997-07-18 | 1998-05-25 | Radio transmission method and wireless telephone especialy for digital reinforced wireless telephone standard |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1016294A1 (en) |
| JP (1) | JP2001510972A (en) |
| CN (1) | CN1264523A (en) |
| AR (1) | AR009886A1 (en) |
| AU (1) | AU8430598A (en) |
| CA (1) | CA2297054A1 (en) |
| DE (1) | DE19730984A1 (en) |
| WO (1) | WO1999004586A1 (en) |
| ZA (1) | ZA986317B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI105635B (en) * | 1998-09-01 | 2000-09-15 | Nokia Mobile Phones Ltd | Method of transmitting background noise information during data transfer in data frames |
| CA2796965C (en) | 2010-04-28 | 2019-04-16 | Kimberly-Clark Worldwide, Inc. | Method for increasing permeability of an epithelial barrier |
| JP6055431B2 (en) * | 2014-03-13 | 2016-12-27 | サクサ株式会社 | Cordless telephone device and wireless communication method |
| JP7042463B2 (en) * | 2018-06-13 | 2022-03-28 | パナソニックＩｐマネジメント株式会社 | Cordless phone and base unit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5537509A (en) * | 1990-12-06 | 1996-07-16 | Hughes Electronics | Comfort noise generation for digital communication systems |
| DE4236088A1 (en) * | 1992-10-26 | 1994-04-28 | Siemens Ag | Method for reducing the adverse effects of poor voice transmission quality when connected to a cordless telephone |
| JP3090842B2 (en) * | 1994-04-28 | 2000-09-25 | 沖電気工業株式会社 | Transmitter adapted to Viterbi decoding method |
| FI99066C (en) * | 1995-01-31 | 1997-09-25 | Nokia Mobile Phones Ltd | data Transfer method |
| FI100932B (en) * | 1995-04-12 | 1998-03-13 | Nokia Telecommunications Oy | Transmission of audio frequency signals in a radiotelephone system |
| DE19515546C2 (en) * | 1995-04-27 | 1999-01-07 | Siemens Ag | Method and arrangement for wireless transmission of voice signals and data signals over the same radio channel between a transmitting device and a receiving device |
-
1997
- 1997-07-18 DE DE19730984A patent/DE19730984A1/en not_active Ceased
-
1998
- 1998-05-25 CN CN98807372A patent/CN1264523A/en active Pending
- 1998-05-25 AU AU84305/98A patent/AU8430598A/en not_active Abandoned
- 1998-05-25 WO PCT/DE1998/001413 patent/WO1999004586A1/en not_active Application Discontinuation
- 1998-05-25 EP EP98934778A patent/EP1016294A1/en not_active Withdrawn
- 1998-05-25 CA CA002297054A patent/CA2297054A1/en not_active Abandoned
- 1998-05-25 JP JP2000503674A patent/JP2001510972A/en active Pending
- 1998-07-14 AR ARP980103418A patent/AR009886A1/en active IP Right Grant
- 1998-07-16 ZA ZA986317A patent/ZA986317B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE19730984A1 (en) | 1999-02-11 |
| JP2001510972A (en) | 2001-08-07 |
| EP1016294A1 (en) | 2000-07-05 |
| AU8430598A (en) | 1999-02-10 |
| CA2297054A1 (en) | 1999-01-28 |
| AR009886A1 (en) | 2000-05-03 |
| ZA986317B (en) | 1999-01-22 |
| WO1999004586A1 (en) | 1999-01-28 |
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