CN1446414A

CN1446414A - Communication methods and devices providing dynamic allocation of radio resources

Info

Publication number: CN1446414A
Application number: CN 01814106
Authority: CN
Inventors: P·W·登特
Original assignee: Ericsson Inc
Current assignee: Ericsson Inc
Priority date: 2000-08-14
Filing date: 2001-07-16
Publication date: 2003-10-01
Also published as: EP1310052A1; WO2002015435A1; AU2001280569A1

Abstract

Communications can be provided by communicating a first data burst using a first bandwidth and a first burst duration, and communicating a second data burst using a second bandwidth and a second burst duration. In particular, the first bandwidth can be greater than the second bandwidth, and the first burst duration can be less than the second burst duration. In addition, a product of the first bandwidth and the first burst duration can be substantially equal to a product of the second bandwidth and the second burst duration.

Description

The communication means and the equipment of Radio Resource dynamic assignment are provided

Background of invention

The present invention relates to the communications field and be particularly related to wireless communication system and method.

In the wire communication of using modulator-demodulator, desirable may be data transmission bauds to be fitted to an accessible peak data rate keep reliable communication by the circuit that some quality scale is provided simultaneously.These wire message way are not used by a plurality of users usually simultaneously, so the wire communication of a plurality of accesses is not also used usually usually.These wire communications usually by from the some more relatively bits of each code element of a good ＂ circuit of ＂ one of to the less bit of each code element of the bad ＂ circuit of a ＂ one of change modulator approach or ＂ signal constellation (in digital modulation) ＂ (signal constellation) come adaptation data speed.Selectively, the error correction coding of different stage can be selected to provide different balances between throughput and reliability.

Wireless communication system such as cellular radio is at present to providing more diverse direction based on digital data service to launch, and modulation and the adaptive of coding are proposed.For example, digital cellular standard GSM (global system for mobile communications) uses GMSK (GMSK (Guassian Minimum Shift Keying)) modulation (before coding) of each hertz bandwidth 1.35 bits at first.GSM standard is now to EDGE standard (GSM evolution enhanced data rates) development, and the EDGE standard comprises adaptively selected (before the coding) of 8 PSK of each hertz bandwidth 4.05 bits, and this is as the replacement option of GMSK when situation allows.Consider desired signal (carrier wave) and interference signal (interferences) than (C/I), from the distance (path loss) of transmitted from transmitter to receiver thus and/or can constitute the selection that GMSK modulation or 8 PSK modulate in the validity of wireless terminal or a pattern of network base station or other pattern.According to the EDGE standard, GMSK and 8 PSK modulation both are turned round according to substantially the same channel standard.

According to the third generation cellular radiotelephone standard that is called 3G (third generation), the Wideband Code Division Multiple Access (WCDMA) (WCDMA) with variable bit rate orthogonal coding can be used for providing a series of available data rate that increase with 2 power.Factor such as portable terminal and network performance and capacity validity can be used to influence the selection of data rate.For example, if network by heavy load, then can not have enough capacity to give the highest data rate to each user, therefore a lower data rate can be used.In addition, higher data rate can be provided in the Microcell that each square kilometre have intrinsic more high power capacity.According to the WCDMA standard, bandwidth can be fixed on the 5MHz place, thereby its data rate is by changing basic data rate and change expansion to come by the adaptive fixed-bandwidth that provides.

, cdma system may need accurate feedback power control so that lucky correct power is used for just in time only allowing acceptable received.In order to keep closed power control, receiving terminal may need usually to launch, and therefore is provided at a constant drain on the battery.

Tdma system is more insensitive to keeping accurate power control inherently, disturbs because tdma system avoids containing cochannel usually in same sub-district.By reduce spreading rate, increase data rate and to different portable terminals provide high data rate to burst in order to replace to different mobile terminal parallels provide lower data speed to reduce to disturb in the sub-district, then cdma system can be shifted to the TDMA function.The maximum data rate that is provided by a 5MHz bandwidth system is difficult to decode when existing at multipath distortion (it increases along with data rate usually).In other words, receiver may not be when multipath distortion exists be decoded to the high data rate transfer of using a 5MHz bandwidth emission, because needed receiver complexity may increase exponentially with respect to the increase as the multidiameter that function calculated in data symbols cycle.

Summary of the invention

According to various aspects of the present invention, can transmit first data burst and utilize second bandwidth and second duration of bursting to transmit second data burst and provide and communicate by letter by utilizing first bandwidth and first duration of bursting.More particularly, first bandwidth can be greater than second bandwidth, and first duration of bursting can burst the duration less than second.Therefore communication between base station and portable terminal (group) can dynamically be assigned with to next time frame from a time frame by the bandwidth and the duration of bursting.In addition, image duration common time, can be assigned with different burst duration and bandwidth with a plurality of communications of Mobile Terminals.

Description of drawings

Fig. 1 has illustrated first method and apparatus that distributes bandwidth, tdma slot and chip rate according to the embodiment of the invention.

Fig. 2 has illustrated second method and apparatus that distributes bandwidth, tdma slot and chip rate according to the embodiment of the invention.

Fig. 3 has illustrated the operable common issue of full-time crack, half son's time slot and 1/4th sub-slots/reception burst format for Fig. 1 or 2.

Fig. 4 A has illustrated the embodiment according to portable terminal of the present invention and method.

Fig. 4 B has illustrated the embodiment according to communication network of the present invention and method.

Fig. 4 C has illustrated the embodiment according to network base station of the present invention and method.

Fig. 5 has illustrated the additional embodiments according to portable terminal of the present invention and method.

Fig. 6 has illustrated according to other embodiment of portable terminal of the present invention.

Preferred forms

Now will more completely describe the present invention with reference to the accompanying drawings hereinafter, the preferred embodiments of the present invention have been shown in the accompanying drawing.Yet the present invention can be embodied as many different forms and should not be construed as limited to the embodiment that illustrates herein; But, provide these embodiment so that the disclosure with comprehensive and complete, and will fully be expressed scope of the present invention to those skilled in the art.Same numeral is meant same throughout element.As it should be appreciated by those skilled in the art that the present invention can be embodied in method or equipment.Therefore, the present invention can take the form of hardware embodiment, software implementation example or software and hardware two aspect combinations.

Can operate with the transmit symbol speed of the 13MHz/48 of emission from the network station to the portable terminal such as digital cellular radio telephone according to the GSM standard operation.Further developing of GSM standard is called EDGE, introduced 8 PSK at same chip rate place and modulated a higher data rate is provided.Therefore 8 PSK options can be burst at one provides a Maximum Bit Rate before the coding at 13MHz/16 during (time slot that takies a time frame), with the GMSK chopping phase of the GSM maximum data throughput than triplication.By select basic (GMSK) or 8PSK modulation or by coding dynamically distribute one more big figure or more the time slot of peanut give different users keep a public chip rate simultaneously and burst/time slot format then can adapt to different user's requests.According to the tehse technology, a fixing bandwidth is held, that is, and and the 200kHz channel spacing.In other words, each time frame of first portable terminal can be assigned with single time slot, and each time frame of second portable terminal can be assigned with two or more time slots, and a lower data rate is provided for first terminal so that higher data rate is provided for second terminal.

The further increase of data rate may provide by using the symbol constellations greater than 8 PSK modulation.Yet, because the caused possibility to noise, interference and multipath transmisstion increase sensitivity of this type of high-order symbol constellations, so the use of this type of high-order symbol constellations may not be preferred.

Increase bandwidth and chip rate then can provide the higher bit rate of bursting by some factors (such as 2 or 4 the factor), but when code element was short duration, then multipath distortion (also common name postpones expansion or time dispersive) may become the code-element period of a bigger quantity.Therefore can use an equalizer to compensate multipath distortion, and the equalizer complexity is about will being increased progressively exponentially by the code-element period quantity of the multipath distortion of equilibrium.According to embodiments of the invention, therefore desirable may be: provide the chip rate of an increase for the portable terminal of suffering less multipath distortion by the bandwidth of an increase in one period cycle short period, and the chip rate of a reduction is provided in cycle longer time by a bandwidth that reduces for the portable terminal of suffering bigger multipath distortion.

For example, first communications of Mobile Terminals of suffering a relative high level multipath distortion can utilize first bandwidth to be provided with first chip rate in first emission/reception duration of bursting; Second communications of Mobile Terminals of suffering the medium level multipath distortion can burst the duration in the second emission/reception (such as half of the cycle very first time) utilize second bandwidth (such as doubling first bandwidth) to be provided with second chip rate (such as doubling first chip rate); And suffer the 3rd communications of Mobile Terminals of low level multipath distortion relatively can burst the duration in the 3rd emission/reception (such as the cycle very first time 1/4th) utilize the 3rd bandwidth (such as being four times in first bandwidth) to be provided with the 3rd code element speed (such as being four times in first chip rate).In addition, burst these distribution of duration and/or bandwidth of chip rate, emission/reception can dynamically be carried out according to the service that the moving of portable terminal, power system capacity and/or change offer different mobile terminal.

In addition, burst that to provide compatibility between the known system of duration may be useful use changing burst system and method for the present invention and use fixed-bandwidth, chip rate and/or the emission/reception of duration of bandwidth, chip rate and/or emission.According to the example of discussing in the above, duration and first (minimum) bandwidth is burst in first (minimum) chip rate, first (the longest) emission/reception can be with identical according to those of GSM standard use.The burst combination of the duration and first bandwidth of first chip rate, the first emission/reception also can be used for providing back compatible to previous existing portable terminal, and is too big and adapt to can not support the second or the 3rd code element speed the time and the communicating by letter of new terminal with convenient multipath distortion.In addition, a new portable terminal with wide relatively and narrow bandwidth available channel may be able to receive and handle the signal of each type and can excessively not increase the quantity of employed each process chip and/or program.The variation that this system can also adapt to wide and narrow band link according to the change sum of region (can influence multipath distortion) and/or portable terminal mixes.

Fig. 1 has illustrated first example according to allocated bandwidth of the present invention, tdma slot and chip rate.In Fig. 1, each piece (1a-d, 2aa-b, 2aa-ab, 3aa-bb, 4aa-bb, 5a-d, 6a-d, 7a-d, and 8a-d) expression an emission/reception burst, this burst the duration (scope in the time domain) quilt represented along transverse axis, same Time Bandwidth (scope in the frequency domain also is generally called frequency spectrum or bandwidth occupancy) is represented along the longitudinal axis.In the example of Fig. 1, the tdma frame cycle can equal the frame period (4.615 milliseconds) of GSM standard.This frame period can be divided into 8 full-time cracks, and each has a duration according to 576.92 μ S of GSM standard.According to embodiments of the invention, a full-time crack can be divided into two semi-continuous chronon time slots (each has the duration of one 288.46 μ s) or four 1/4th duration sub-slots (each has the duration of 144.23 μ s).

In addition as shown in Figure 1, having emission/reception that the sub-slots of shorter duration launches for use bursts a wideer bandwidth can be provided.As shown, emission/reception of using full duration time slot to be launched 5a-d that bursts, 6a-d, 7a-d and 8a-d can take the bandwidth of the 200kHz of GSM standard regulation; Use the emission/reception of the semi-continuous chronon time slot emission 2aa-ab that bursts, 3aa-bb and 4aa-bb can take the bandwidth of 400kHz; And burst 1a-d and 2a-b of emission/reception of using the sub-slots emission of 1/4th duration can take the bandwidth of 800kHz.In addition, complete, half and the division of 1/4th duration time slots can come from the time slot to the time slot, dynamically to change according to the multipath distortion between use, each portable terminal and the system of power system capacity and the service of each portable terminal support.

Therefore emission/the reception that the takies full duration time slot 5a-d that bursts, 6a-d, 7a-d and 8a-d can provide compatibility for GSM mobile termination in the GMSK modulation when being used; And/or provide compatibility when being used when 8 PSK modulation for the EDGE portable terminal.When multipath distortion surpassed a predetermined threshold, full duration time slot can also be used according to portable terminal of the present invention.In addition, if since multipath distortion cause when a longer duration of bursting is not desirable concerning obtaining to receive reliably, then can use available bob to penetrate/receive to burst the duration that service for portable terminal of the present invention is provided.

Fig. 1 also illustrated according to specific embodiment of the present invention, different emission/receptions burst one common time bandwidth product can be saved.By example, the emission/reception that provides on the full duration time slot 6a that bursts can have the duration of one 576.92 μ s and the bandwidth of a 200kHz, thereby the time bandwidth product of a 115.384sHz is provided; Burst bandwidth that 4aa can have the duration of one 288.46 μ s and a 400kHz of the emission/reception that provides on semi-continuous chronon time slot provides the time bandwidth product of 115.384sHz; And the emission/reception that provides on 1/4th duration sub-slots 2a that bursts can have the duration of one 144.23 μ s and the bandwidth of a 800kHz, thereby the time bandwidth product of a 115.384sHz is provided.Each combination for time slot/sub-slots keeps a set time bandwidth product to can be provided in following advantage discussed in detail., be not limited to those embodiment of the set time bandwidth product of time slot that various durations is provided and sub-slots according to system of the present invention, terminal and method.

As Fig. 1 further shown in, the parallel emission/reception that takies full duration time slot burst (such as the 6a-d that bursts) can take the different frequency bands of 800kHz bandwidth altogether.Similarly, Bing Hang emission/reception burst (during semi-continuous chronon time slot, transmit such as 4aa-ab) can take the different frequency bands of 800kHz bandwidth altogether.Can see in Fig. 1: two borders between the 200kHz bandwidth can be depended in the center of 400kHz or 800kHz bandwidth, promptly depend on the multiple of the 100kHz of an odd number.Yet if desired, this can be by being avoided 400kHz or 800kHz channels offset 100kHz with respect to the 200kHz channel.

Fig. 2 has illustrated second example according to allocated bandwidth of the present invention, tdma slot and chip rate.In Fig. 2, each piece (1a-d, 2ab, 2aa-ab, 3a-b, 3ab-bb, 4aa-bb, 5a, 5ba-bb, 5d, 6a-d, 7aa-ab, 7c-d, and 8a-d) expression an emission/reception burst, this burst the duration (scope in the time domain) quilt represented along transverse axis, same Time Bandwidth (scope in the frequency domain is also referred to as frequency spectrum or bandwidth occupancy) is represented along the longitudinal axis.As in the example of Fig. 1, the tdma frame cycle can equal the frame period (4.615 milliseconds) of GSM standard.This frame period can be divided into 8 full-time cracks equally, and each has a duration according to 576.92 μ S of GSM standard.According to embodiments of the invention, a full-time crack can be divided into two semi-continuous chronon time slots (each has the duration of one 288.46 μ s) or four 1/4th duration sub-slots (each has the duration of 144.23 μ s).

In Fig. 2, piece 1a-d, 2a-b, 2aa-ab, 3ab-bb, 4aa-bb, 5a, 5d, 6a-d, 7c-d is identical with corresponding piece among Fig. 1 with 8a-d.Yet, piece 3a-b, 5ba-bb illustrates the different distribution of full-time crack and semi-continuous chronon time slot with 7aa-ab, thereby the dynamic assignment example from a TDMA time frame to another one TDMA time frame is provided.For example, taking burst 3aa and the 3ba of Fig. 1 of semi-continuous chronon time slot can be during a TDMA time frame provide for two corresponding mobile terminals according to the present invention and communicates by letter, its each all have a propagation path of enough low multipath distortions so that on semi-continuous chronon time slot, adapt to communication.Yet, if the multipath distortion increase of one of two portable terminals exceeds a certain predetermined threshold, a dynamic reallocation of duration and the bandwidth of then bursting can be used in the 2nd TDMA time frame of Fig. 2 to adapt to and two communications of Mobile Terminals, so that burst 3a and 3b are used to support and two communications of Mobile Terminals then.Selectively, one of two portable terminals can stop communication, and burst 3a and the 3b of Fig. 2 can be provided to support and communicating by letter according to the traditional mobile terminal of GSM and/or EDGE standard then.Similarly reallocation illustrates by burst 5ba-bb and 7aa-ab.

Fig. 3 has illustrated the example of common issue/reception burst format, and it can be used in the full duration time slot of Fig. 1, semi-continuous chronon time slot and 1/4th duration sub-slots.These emission/reception burst format can with GSM and EDGE standard provide identical so that can use full duration time slot and be supported according to the portable terminal of GSM and EDGE standard operation.As shown in Figure 3, emission/reception form can comprise initial rising edge (upramping) cycle 91, one group of initial ＂ afterbody ＂ bit 92,57 data code elements 93 of first group, 94,26 synchronization bits of first market bit, 95, the second market bit 96,57 data code elements 97 of second group, the ＂ afterbody ＂ bit 98 of end and trailing edge (downramping) cycle 99.

According to the form of Fig. 3, a code element transmission rate of a full duration time slot can be 13MHz/48, and therefore an element duration can be 48/13 μ s (just in time under 4 μ s).The code element transmission rate of semi-continuous chronon time slot can be doubled to 13MHz/24, simultaneously also bandwidth is doubled to 400kHz, and the code element transmission rate of 1/4th duration sub-slots can be increased four times to 13MHZ/12, also bandwidth is increased by four times to 800kHz simultaneously.Therefore, the same capacity of data and form can be launched during full duration time slot, semi-continuous chronon time slot or 1/4th duration sub-slots, keep simultaneously one regular time bandwidth product.In other words, converting duration of each format character and with same factor inverse proportion conversion bandwidth by direct proportion, then can be emission/reception burst format that all bandwidth keep Fig. 3.By a public burst format using various durations to burst, thereby then common techniques can be used for encoding, launch, receive, balanced and/or decode that this is burst and can reduce the complexity of emittor/receiver.

According to an example of the present invention, can use a plurality of time frames of public 800kHz bandwidth frequency band (it has different bursting each time frame of supporting the downlink transmission from the base station to a plurality of portable terminals) illustrated time frame in defining according to Fig. 1 and 2.For example, the 3a that bursts of burst 3aa and Fig. 2 of Fig. 1 can be used for being supported in during the communication session from the base station to the transmission of first portable terminal.In addition, the 3ab that bursts of Fig. 1 can be used for providing from the base station to the transmission of second portable terminal.In other words, can support from the base station to the downlink transmission of a plurality of portable terminals according to single the bursting of the time frame structure of Fig. 1 and 2.

Selectively or in addition, burst according to those of the time frame structure that illustrates among Fig. 1 and 2 and can support uplink transmission from a plurality of portable terminals to the base station.As should be appreciated, different 800kHz frequency bands can be provided for up link and downlink band.Therefore, during a communication session, such as the 3ba that bursts of Fig. 1 one bursts and can be used for providing first uplink transmission from first portable terminal to the base station, and such as the 3b that bursts of Fig. 2 one bursts and can be used for providing second uplink transmission from first portable terminal to the base station.In addition, those that use to remove that another different 800kHz frequency band frequency bands of those uses of bursting of the time frame that is configured for downlink transmission provides the time frame that is configured for uplink transmission are burst, and its frequency separation is called ＂ Duplex Spacing ＂.Similarly, other is burst and can be used for supporting ul transmissions from other portable terminal to the base station.

Referring now to Fig. 4 A,, can comprise: antenna 300, combiner 302, receiver 304, controller 306, a transmitter 308 and an I/O piece 310 according to a portable terminal of the embodiment of the invention.Combiner 302 can comprise a transmit/receive switch and/or a duplexer.Between combiner coupled antenna 300 and the receiver 304 and the signal between transmitter 308 and the antenna 300.More particularly, receiver 304 can comprise a filter 312 and an equalizer 314.Filter 312 can be carried out filtering to received signal at bandwidth and the frequency place selected by adaptive, and comes with sampling of each code element signal to be sampled so that catch the sampling (such as 156 sampling) that ascertains the number in advance in memory (it can be considered to the part of receiver 304) with selected chip rate (perhaps its multiple).

(that is, use and the irrelevant equalizer techniques of the bandwidth of using in non real-time), then can handle the sampling of being caught by equalizer 314 off lines ground.For example, equalizer can use 26 known synchronization bits 95 to determine that expression arrives one group of channel coefficients of the multipath transmisstion path characteristics of antenna 300.The equalizer therefore sampling of demodulate reception uses determined channel coefficients compensation multipath transmisstion simultaneously.The equalizer that is used for compensating multipath transmisstion for example is described at following United States Patent (USP): title is the U.S. Patent No. 5,331,666 of ＂ Adaptive Maximum Likelihood Demodulator ＂ (self-adaptive maximum likelihood demodulator); Title is the U.S. Patent No. 5,335,250 of ＂ Method And Apparatus For Bidirectional Demodulation OfDigitally Modulated Signals ＂ (method and apparatus that is used for the bidirectional demodulation of digital modulation signals); Title is the U.S. Patent No. 5,557,068 of ＂ GeneralizedDirect Update Viterbi Equalizer ＂ (general direct renewal viterbi equalizer); Title is the U.S. Patent No. 5,557,645 of ＂ Channel-IndependentEqualizer Device ＂ (channel is equalizer equipment independently); Title is the U.S. Patent No. 5,841,816 of ＂ Diversity Pi/4-DQPSK Demodulation ＂ (diversity Pi/4-DQPSK demodulation); With title be the U.S. Patent No. 5,909,465 of ＂ Method And Apparatus For Bidirectional Demodulation ofDigitally Modulated Signals ＂ (method and apparatus that is used for the bidirectional demodulation of digital modulation signals).Therefore each of these patents is in this whole combined by with reference to it.And the application's inventor is the inventor of above-mentioned each referenced patent.

As mentioned above, equalizer 314 can use synchronization bit 95 to calculate a channel estimating of the propagation path from a network base station to antenna 300 and calculate the channel coefficients of representing this propagation path.If equalizer is determined multipath distortion and is in or exceeds its computing capability limit, then receiver can be exported an indication and give controller 306, and in response, controller 306 can make transmitter 308 send a signal to network station so that be reduced to chip rate and the reduction bandwidth that emission/receptions of portable terminal burst.By lowering chip rate and bandwidth, the time delay expansion of the multipath distortion of measuring in code-element period can be lowered.

Network base station can send then a new channel allocation to portable terminal so that use the bandwidth of a minimizing, the duration received signal of bursting of increase.For example, the semi-continuous chronon time slot that portable terminal can be dispensed on the 400kHz place replaces previous 1/4th duration sub-slots that distribute at the 800kHz place, and perhaps this portable terminal can be dispensed on the semi-continuous chronon time slot that full duration time slot replacement had before distributed at the 400kHz place at 200kHz place.New channel allocation is also with particular time-slot (perhaps sub-slots) in the instruction time frame and the special frequency band that will be used.Therefore use the difference emission/reception of the different mobile terminal of same bandwidth to burst can be grouped into as the 2aa-ab that burst by emission/reception of Fig. 1,3aa-ab, 3ba-ab, 4aa-ab, 4ba-bb, 5a-d, 6a-d is in the public time slot or sub-slots that 7a-d and 8a-d are illustrated.

The numerical data that is successfully received at receiver 304 places can controlled device be delivered to I/O piece 310.The I/O piece can comprise output equipment, such as loud speaker, visual display unit, and/or a communication link of other equipment of arriving.The I/O piece can also accept to want controlled device 306, transmitter 308, combiner 302 and antenna 360 to be transmitted into the input of network station.The I/O piece can comprise input equipment, such as transmitter, keypad, touch control screen and/or to or from a communication link of other equipment.

Example according to cellular communications network of the present invention is illustrated in Fig. 4 B.As shown, a cellular communications network according to the present invention can comprise two or

more base stations

502 and 504, its can be used for providing by corresponding wireless communications path to and from a plurality of portable terminals 506,508,510,514,516 and 518 communicate by letter.A MTSO (MTSO) 500 can be used for being coupled in this cellular communications network the base station and can be used for this cellular communications network and a Public Switched Telephone Network 512 are coupled.Each portable terminal can use by about Fig. 1,2,3 with time frame that 4A discusses in the above in the emission/reception (or communication) of time slot/sub-slots, bandwidth and frequency definition burst to communicate by letter with a relevant base station.

For example, the time frame of Fig. 1 and the time frame of Fig. 2 can be frames continuous time that is used for the 800kHz frequency band, and it is made by base station 504 and is used for being transmitted into a plurality of portable terminals that comprise portable terminal 506,508 and 510.One or more these portable terminals can receive and/or emission has first bandwidth and duration one and bursts in image duration very first time of Fig. 1, received during second time frame of Fig. 2 then and/or emission has second bandwidth and duration one and bursts.Portable terminal 506 for example can receive first 3aa that bursts on having the semi-continuous chronon time slot of Fig. 1 of 400kHz bandwidth the image duration very first time, then receive second 3a that bursts on the full-time crack of the Fig. 2 that has the 200kHz bandwidth during second time frame.Can carry out the switching of in second time frame, a lower bandwidth being communicated by letter so that adapt to the increase of multipath distortion, perhaps so that in second time frame, use the 3b that bursts to adapt to and the another one communications of Mobile Terminals on the 200kHz place full-time crack.

Similarly, portable terminal 508 can use the full-time crack of the Fig. 1 with 200kHz bandwidth to receive and/or launches first 5b that bursts in the image duration very first time, uses the semi-continuous chronon time slot with 400kHz bandwidth to receive then during second time frame and/or launches second 5ba that bursts.Switch to a higher bandwidth and can provide the communication of identical data on cycle short period, and switch to a higher bandwidth a desirable increase can be provided in multipath distortion, it can use diversity receiving technology to improve reception.By allow portable terminal one period cycle short period launching near total power, thereby the use of being burst by the shorter duration of portable terminal emission at high bandwidth place more can also reduce the power that is consumed by portable terminal.

Be used in according to time slot/sub-slots that transmits data burst between network base station of the present invention and the portable terminal and bandwidth and therefore can dynamically be assigned with to next time frame from a time frame.In addition, time slot/sub-slots and the bandwidth that is used for the transmission from network base station to portable terminal separately and is used for the transmission from the portable terminal to the base station can be distributed independently.In addition, can be provided for one of the emission of network base station or reception according to time slot/sub-slots of the present invention and allocated bandwidth but be not used in another one.

Network base station 502,504 according to the present invention can also provide and those communications of Mobile Terminals of not supporting time slot/sub-slots of the present invention and Bandwidth Dynamic Allocation.In above-mentioned example, portable terminal 510 for example can be burst having during the time frame on the full-time crack of 200kHz bandwidth to transmit and receive according to GSM and/or EDGE standard operation.In other words, portable terminal 510 can be distributed a full-time crack by each time frame for expectation communication.

Fig. 4 C is the block diagram according to network base station of the present invention.Just as shown, this network base station can comprise: antenna 607, combiner 600, transmitter 603, a receiver 602 and a controller 605.Combiner 600 can be coupled to antenna 607 to transmitter 603 and receiver 602 and reduce therebetween interference.Therefore, receiver 602 can receive from communications of Mobile Terminals by antenna 607 and combiner 600, and transmitter 603 is transmitted into communications of Mobile Terminals by combiner 600 and antenna 607.Selectively, thus separate transmit and receive antenna and can be used and do not need combiner.Therefore controller 605 can determine to be transmitted to separately the data of portable terminal and the time slot/sub-slots and the bandwidth that will be used for each portable terminal for each time frame, and transmitter 603 can be launched those that discuss about Fig. 1,2,3,4A and 4B in the above and bursts.Similarly, receiver 602 may be received on the time slot/sub-slots that is assigned with and the bandwidth by those of portable terminal emission and bursts.

According to embodiments of the invention, be used to be transmitted into and receive determined by the controller 605 of network base station from the time slot/sub-slots of portable terminal and the distribution of bandwidth.This distribution can be used control channel and send the corresponding mobile terminal to, and if the reallocation be transmitted to affected portable terminal (group), then the reallocation of time slot/sub-slots and bandwidth can be provided for the next one from a time frame.Especially, reallocation can be done provide higher bandwidth/data rate to supporting the more portable terminal of high data rate; Provide lower bandwidth/data rate to the portable terminal of suffering multipath distortion; Come to use diversity receiving technology and improve higher bandwidth/data rate is provided when receiving in the increase of resulting multipath distortion; And/or a higher bandwidth/data rate is provided so that portable terminal can one period short time cycle approaching full power transmissions, thereby can reduce battery consumption.

Portable terminal additional embodiments according to the present invention is illustrated in Fig. 5.Portable terminal according to Fig. 5 can comprise an antenna 100, and this antenna is coupled to receiver 99 and transmitter 104 by coupler 101.If do not need to receive and dispatch simultaneously (as situation common in the tdma system), then coupler 101 can comprise a transmit/receive switch.Transmitting-receiving simultaneously if desired, then coupler 101 can comprise a duplexer filter.Pass to receiver front end 102 from the received signal of antenna 100 through coupler 101, receiver front end 102 can comprise that is used for filter, a low noise amplifier and the downconverter that downconverts to intermediate frequency (IF) signal that the band signal of unwanted frequency band signal (transmission frequency band signal) and hope is separated.Intermediate frequency (IF) thus band pass filter 105 may operate on the intermediate frequency and optionally to transmit the signal that is present within the channel width.Further channel filtering can be provided intermediate frequency amplifier 106a so that the definition receiver selectivity channel accepting to select and refuse adjacent channel signal.

For example, filter 105 and intermediate frequency amplifier 106a can accept wide channels bandwidth (800kHz in Fig. 1 and 2 example), and use compound mode number transducer 106b, and then whole bandwidth can be switched to numeric field.For example can use in the U.S. Patent No. 5 of title as ＂ Log-Polar SignalProcessing ＂ (processing of logarithm polar signal), 048, the logarithm polarity technology of discussing in 059 is carried out compound A D conversion, wherein phase information for example can be used such as in the U.S. Patent No. 5 of title as ＂ Logarithmic Amplifier/Detector DelayCompensation ＂ (logarithmic amplifier/detector delay compensation), 070,303 or title be the U.S. Patent No. 5 of ＂ Direct Phase Digitization ＂ (Direct Phase digitlization), discuss in 084,669 and so on a phase digitization transducer be digitized; And wherein amplitude information can be digitized with the compensation of relative delay, as the U.S. Patent No. 5 that at title is ＂ Method And An Arrangement For AccurateDigita1 Determination Of The Time Or Phase Position Of A SignalPulse Train ＂ (method and configuration that the time of signal pulse sequence or the precise figures of phase position are determined), discussed in 148,373.Therefore each of these patents is in this whole combined by with reference to it.In addition, the application's inventor is the inventor of above-mentioned each referenced patent.

For the embodiment that in Fig. 5, is illustrated, physics filtering can be used for transmitting the wideest self-adaptation selectable and selects bandwidth, and the digital filter of being realized by digital signal processor 107 in numeric field can further reduce bandwidth for the centre and the narrowest bandwidth selected.Digital filter can be limited in the dynamic range by the dynamic range 106b of compound AD converter, if other signal in the receiver pass-band is higher unlike desired signal basically on signal level, the dynamic range that then causes may be enough.

In addition, during same time slot or sub-slots (for example emission/reception of Fig. 1 burst 4aa-ab or 5a-d), take the signal that signal that the different frequency of wide channels bandwidth divides can be selected as similar strength.If desired, then signal can be exchanged so that the classification of signal strength signal intensity is provided between the time slot that uses same frequency division.In other words, use emission/receptions of Fig. 1 5a-d that bursts, the signal that launch in those full-time cracks that 6a-d, 7a-d and 8a-d take can be classified so that the unlike signal of similar strength is launched during public time slot at network station.When a signal strength signal intensity was not more than other signal basically, signal that (5a and 5b for example, burst) launch can adapt to better then to use emission/receptions take public time slot/sub-slots and adjacent channel bandwidth to burst.

According to the optional embodiment of Fig. 5, IF filter 105 can comprise the different optional physical filter that is fit to come by the unlike signal bandwidth.Different optional filters can come selected by the control signal that is produced by controller 108 on control bus 98 according to the bandwidth (group) in using.The use of optional physical filter can allow bigger endurable adjacent channels interference, and physics and digital filter can make together and be used for strengthening to not wishing the refusal of adjacent channel signal.The digital filter that broadband receiver is converted to narrow-band receiver is the U.S. Patent No. 5 of ＂ Dual-Mode Radio Receiver For Receiving Narrowband AndWideband Signals ＂ (being used to receive the dual-mode wireless receiver of arrowband and broadband signal) at for example title, 668, therefore be described in 837, this patent is in this whole combined by with reference to it.In addition, the application's inventor is above-mentioned by the inventor of the patent of reference.

Coupler 101 can be a transmit/receive switch in the portable terminal that does not does not transmit and receive simultaneously.Utilize a transmit/receive switch, controller 108 can be coupled to coupler 101 so that determine receiver 99 or transmitter 104 is coupled to antenna 100 by control bus 98.Controller 108 can also be coupled to frequency synthesizer 103 so that mention the tuning sign indicating number of synthesizer there, and controller can be coupled to shown other unit and carves in due course to different units power supply and outage so that preserve the power of battery.Frequency synthesizer 102 can provide a local oscillator signals to a downconverter in the receiver front end 102, and it is offered modulator and emission power amplifier in the transmitter 104.Therefore, take place on the tranmitting frequency channel that emission (if desired) can be assigned with in emission band.Digital signal processor 107 can also produce multiplex modulated signal in numeric field, before the transmission carrier frequency that modulation is assigned with, it can be utilized compound DA converter 109 and be transformed into analog signal.

Compound DA converter 109 and a modulator that is included in the transmitter 104 for example can be to be the U.S. Patent No. 5 of ＂ Quadrature Modulator With Integrated Distribution RCFilters ＂ (quadrature modulator with comprehensive distribution RC filter) at title, 530, I, the Q modulator design described in 772, this patent are therefore in this whole combined by with reference to it.In addition, the application's inventor is above-mentioned by the inventor of the patent of reference.Selectively, a modulator of compound DA converter and transmitter can use the r-theta modulation, wherein, modulator only at first produces a constant amplitude signal with expectation form phase change, comes to add the envelope of expecting conversion with the r signal in amplitude afterwards and modulates.(for example, as employed in) the situation, may there be changes in amplitude to be modulated again, in the GMSK modulation because a normally permanent width of cloth modulation of GMSK signal according to GSM standard., 8PSK modulation (for example, as according in the employed situation of GSM/EDGE standard), amplitude conversion (that is linear modulation) can be used better so that comprise the signal that is launched in allotted channel.

The other embodiment of portable terminal of the present invention is utilized the receiver explanation that has merged homodyne technique in Fig. 6.As shown, can be delivered to homodyne downconverter 200 by coupler 401 (it can comprise a transmit/receive switch) from the received signal of antenna 400.Received signal can use band pass filter 201 filtered, use low noise amplifier 202 be exaggerated and use orthogonal mixer 203 and 204 by quadrature down-conversion to composite baseband.Orthogonal mixer 203,204 mixes signal with cosine and sinusoidal local oscillator such as oscillator 205.Frequency of utilization synthesizer phase-locked loop circuit 403, then oscillator 205 can be controlled to the center of expectation receive frequency channel.

Compound baseband signal can utilize filter amplifier 206 and 207 to be low pass filtering and amplify and utilize AD converter 208 to be changed by AD then.By use AD converter 208 and have enough dynamic ranges with do not make the saturated filter amplifier of DC shifted signal 206 with 207 with homodyne radio receiver in DC be offset relevant problem and can be compensated.Use digital signal processor 407 to use the technology of discussing such as in following United States Patent (USP), then the DC skew can be estimated and be eliminated, these patents are that title is the U.S. Patent No. 5 of ＂ D.C.Offset Compensation In A Radio Receiver ＂ (the DC migration in wireless receiver), 241,702 and title be the U.S. Patent No. 5 of ＂ Slope Drift And Offset Compensation In Zero-IF Receivers ＂ (slope deviation and skew in zero-IF receivers), 568,520.Therefore each of these patents is in this whole combined by with reference to it.In addition, the application's inventor is the inventor of above-mentioned each referenced patent.These patents have been discussed the method for compensation homodyne radio receiver imperfection.

The advantage of a homodyne radio receiver is: can provide channel filtering by low pass filter 206 and 207, low pass filter 206 and 207 can be provided the integrated device electronics relative with the band pass filter 105 of Fig. 5, and the band pass filter of Fig. 5 can be provided as an external module (group).The use of integrated low pass filter can reduce the size and the cost of a portable terminal.In addition, a plurality of different filter bandwidhts can be integrated into and comprise a plurality of or whole homodyne radio receivers 200 in interior single chip, thereby realize a plurality of bandwidth capacitys and do not increase the quantity of employed chip or assembly significantly.It is selected that the filter bandwidht of an expectation can produce signal along control bus (for clearly purpose is not shown in Fig. 6) by processor controls 408, and this control bus coupling need be from all pieces of control signal in the processor controls 408 and/or power ON/OFF signal.

Therefore can select wide relatively bandwidth and high relatively data rate to be used between wireless network and this portable terminal, transmitting data according to portable terminal of the present invention, therefore in the time of a reduction, finish this communication.So, then in cycle short period, provide the data rate of an increase concerning this portable terminal, to remain favourable because in the duration of bursting of reducing, can use big bandwidth to provide higher data rate can keep constant relatively the time by the message capacity of the product definition of time and bandwidth.Especially, because emission and/or reception can be done in shorter time, so the power of battery at portable terminal place can be saved.

In some cases, can reduce the Internet resources of finishing a given data forwarding of consumption with the selection of the higher bandwidth of higher data rate on the duration is burst in short emission/reception.Especially, when two or more multipath rays had the relative delay that equals an element duration or the independent decay that presents more, then multipath transmisstion can be useful.Therefore independent ray can provide the similar effect with the diversity reception channel, and it can significantly reduce the power that successful signal post needs and can improve tolerance to disturbing.When from the path of transmitted from transmitter to receiver when a narrow relatively bandwidth does not provide relative delay more than or equal to an element duration, if bandwidth and data rate are increased so that element duration is lowered, then a delay difference according to code-element period will be increased, thereby improve diversity gain available from multipath transmisstion.

On the contrary, in the time of can not being received machine equalizer (it may be implemented as the part of digital signal processor 107 or 407) compensation if multidiameter (according to code-element period) is too big, then reducing burst bandwidth and data rate (so increasing code-element period) of emission/reception and can improve communication performance.Therefore, increase or reduce emission/reception bandwidth and data rate so that provide the multidiameter of an expected range can improve data communication with respect to element duration.This network can be determined propagation conditions by receiving from an indication (it can be taken in the affirmation of success or unsuccessful Data Receiving slightly) of portable terminal.Selectively, its receiver equalization device of network use and channel estimator then can be determined the propagation conditions from the portable terminal to the network, and the path of supposition from the network to the portable terminal has similar multidiameter expansion.

When network determined bandwidth, the data rate of change and communication of mobile terminal and bursts the duration, then new bandwidth, frequency channels and time slot/sub-slots distribute can be transmitted to portable terminal.For example, as the expansion of GSM, GPRS or EDGE agreement, this reallocation can be performed, and above-mentioned each agreement relates to portable terminal and listens to a control channel and receive the channel allocation that is used to transmit and receive subsequent data packet.Can select by fixed-bandwidth for a given group of packet, estimate based on success, failure or other then, make one and judge that the follow-up group that comes for packet carries out one other channel and distributes.

For example, by receiving a click from the portable terminal microbrowser, the GPRS/EDGE standard is given portable terminal by begin Data transmission in response to a request usually.Portable terminal is listened to control channel for the message first of coming automatic network then, and it listens to described message informing which frequency channels and which time slot and receive the data of being asked.Network is launched message first being addressed on the control channel of this portable terminal, it provides the channel allocation that can comprise frequency channels, time slot and modulation type parameter.According to the present invention, this that comes automatic network then message also can comprise the bandwidth and the chip rate that will be used, and the time slot indication can also define its sub-slots.Portable terminal can the acknowledgement channel assignment messages reception, thereby indicate this portable terminal will listen to this allotted channel.Network is launched the data of being asked then on this allotted channel, replace with the data that are addressed to other portable terminals.

Portable terminal can be to decoding and leach those packets of having loaded its address (burst transmit by corresponding emission/reception) being assigned with the data that receive on the channel.The successful reception of packet can be confirmed this network by this portable terminal.Selectively, portable terminal can be burst by emission/reception separately and be received a string packet, and if this string when not being successfully received then an indication that does not receive each packet only is provided.In other words, for can not the decoded packet in zero defect ground and network is got back in an indication emission, if all groupings in this string are can zero defect ground decoded then do not launch this indication.The grouping that this network then can repeat its transmission be lost or is not identified.

Channel assignment message also can comprise the short temporarily ID sign indicating number of 3 bits, is used for when terminal can be sent out affirmation, signals to this portable terminal and does not conflict with the emission of other portable terminal.Described 3 bit code can be included in the data of launching in the allotted channel, even when another portable terminal is arrived in the described data addressing that is launched.When detecting the emission of this 3 bit code in the data that this portable terminal is launched on allotted channel, then this portable terminal is authorized to come determining in advance in next time frame to launch on the time slot.

When a common time, bandwidth product can be kept for bursting according to the emission/reception of the different pieces of information speed of the embodiment of the invention, do not have to retrain especially to following: with the more exactly parallel ground of the down link from the network to the portable terminal, the up link frame format from the portable terminal to the network station needs to be divided on time and frequency.As an alternative, advantageously: for example, as what in following United States Patent (USP), discussed, use different bandwidth in different directions, it is the U.S. Patent No. 5 of " Satellite/Cellular Phone UsingDifferent Channel Spacings On Fotward And Return Links " (at the satellite/cell phone of the forward direction channel spacing different with use on the return link) that these United States Patent (USP)s have title, 960,364; Title is the U.S. Patent No. 5 of " Methods And Apparatus For Mobile StationTo Mobile Station Communications In A Mobile SatelliteCommunications System " (in mobile satellite communication system from mobile-to-mobile method for communicating and equipment), 943,324; Title is the U.S. Patent No. 5 of ＂ Method AndApparatus For Enabling Mobile-To-Mobile Calls In ACommunication System ＂ (being used to realize the method and apparatus of mobile-to-mobile call in communication system), 809,141; Title is the U.S. Patent No. 5,566,168 of ＂ TDMA/FDMA/CDMAHybrid Radio Access Methods ＂ (TDMA/FDMA/CDMA hybrid radio access methods).Therefore each of these patents is in this whole combined by with reference to it.In addition, the application's inventor is the inventor of above-mentioned each referenced patent.

Especially, this disclose when launch wide bandwidth more longer when bursting with the too much peak power of needs portable terminal launch more that longer the bursting of narrow bandwidth may be favourable.On the other hand, this disclose when launch narrow bandwidth more longer burst with basically need be the time less than maximum power with approach maximum power transmission more the shorter of wide bandwidth burst, then a battery-operated terminal can obtain longer battery life.Generally speaking, if because with (promptly less than maximum power, transmitter retreats) thus emission may cause low portable terminal transmitter of conversion efficiency that the power of battery arrives RF power the shortest may be in the time during as far as possible near maximum power transmission, then this portable terminal transmitter can be used most effectively.Therefore channel assignment message can define the different channels characteristic of bursting of bursting and launching of emission from the network station to the portable terminal from the portable terminal to the network station, so that the valid function of portable terminal transmitter is provided.

When uplink pathloss and time dispersive allowed, the more high bandwidth that then is used for the portable terminal emission distributed (allow a shorter time in the cycle with high power transmission more) that the battery life of increase also can be provided portable terminal.When allowing (for example when portable terminal relatively near network base station time), path loss replaces retreating when launch, then portable terminal so can in the duration of bursting that reduces, launch with the transmit data rate and the bandwidth of increase than low rate from max transmitter power.For a shorter time, the latter is lower than the efficient of full power transmissions, thereby influences battery life unfriendly.

Therefore according to the present invention by using first bandwidth and first duration of bursting to transmit first data burst and use second bandwidth and second duration of bursting was transmitted second data burst, communication can be provided.More particularly, first bandwidth can be greater than second bandwidth, and first duration of bursting can burst the duration less than second.Therefore communication between base station and mobile radio station (group) can dynamically be assigned with to next time frame from a time frame by the bandwidth and the duration of bursting.In addition, image duration common time, can be assigned with different burst duration and bandwidth with a plurality of communications of Mobile Terminals.

For example, communication can be launched into second communication equipment from first communication equipment during a communication session, and wherein communication session can be defined as comprising and a plurality ofly be used for supporting transmitting such as the related data of a Service events of call; Transmitting and receiving of Email, paging or other data; An internet session; Perhaps other related datas between two communication equipments are transmitted.More particularly, first data burst can use first bandwidth and first duration of bursting to be launched during this communication session, and second data burst can use second bandwidth and second duration of bursting to be launched during this communication session.

The 3rd data burst also can use the 3rd bandwidth and the 3rd duration of bursting to be launched, and wherein first and second bandwidth are greater than the 3rd bandwidth, and wherein first and second duration of bursting burst the duration less than the 3rd.According to a specific example, first data burst can be launched in the image duration very first time, and second data burst can be launched during second time frame, thereby wherein each frame structure that all has a common frame cycle and a repetition of first and second time frames uses first and second time frames to provide time division multiple access to insert.

According to one particular embodiment of the present invention, the burst product of duration of first bandwidth and first can be substantially equal to the burst product of duration of second bandwidth and second.In addition, first data burst can be transmitted with first data rate, and wherein second data burst can be transmitted with second data rate, and first data rate can be higher than second data rate.According to this embodiment, the data of a public amount are transmitted by first and second data bursts.In addition, first data burst and second data burst are shared a public burst format, and described public burst format according to described first and second data bursts separately first and second burst the duration by convert (scale).

According to an optional aspect of the present invention, communication can be from base station to corresponding first and second portable terminals.Especially, first data burst can use first bandwidth and first duration of bursting to be launched into first portable terminal, and second data burst can use second bandwidth and second duration of bursting to be launched into second portable terminal.As before, first bandwidth can be greater than second bandwidth, and first duration of bursting can burst the duration less than second.In addition, first and second data bursts can be launched during public one in a plurality of time frames, and the frame structure that wherein said time frame has a common frame cycle and a repetition provides time division multiple access communication.

In other words, communication means of the present invention and equipment can provide the adaptive bandwidth time division multiple access to insert, and wherein, for a full-time crack in the time frame that repeats, a super channel width can be defined as equaling the integral multiple of fundamental channel bandwidth.Data burst can use during the full-time crack fundamental channel bandwidth be transmitted (send and/or receive) and/or therein sub-slots have one and use the super channel width of sub-slots to be transmitted during less than the time frame of the duration in full-time crack.

Can imitate embodiment according to one, super channel width can be 800kHz, and an intermediate channels bandwidth can be 400kHz, and a fundamental channel bandwidth can be 200kHz.In this example, the frame period of a repetition can be approximately 4.615ms, and it can be divided into 32 144.23 μ s sub-slots.Single sub-slots can be used for transmitting an emission/reception burst (the super channel of bandwidth that its chip rate with per second 13,/12 1,000,000 code elements uses whole 800kHz); Two sub-slots can be merged transmits two emission/receptions burst (its each all use corresponding 400kHz bandwidth primary channel with the chip rate of per second 13,/24 1,000,000 code elements); And/or four sub-slots can be merged and transmitted four emission/receptions burst (its each all use corresponding 200kHz bandwidth primary channel with the chip rate of per second 13,/48 1,000,000 code elements).

The merging that transmits four sub-slots that an emission/reception with 200kHz bandwidth bursts with the chip rate of per second 13,/48 1,000,000 code elements of merging duration with one 576.92 μ S can be used for supporting the data cellular communication according to GSM and/or EDGE standard.Therefore apparatus and method according to the invention can provide back compatible with respect to existing GSM/EDGE portable terminal and/or basic structure.

Use each bandwidth and time bandwidth product that emission/reception that the duration of bursting merges is burst is identical by providing, common data form can use each bandwidth and the duration of bursting merges to be used so that launch/receive and bursts.In other words, common data form can use at 1/4th duration sub-slots on the 800kHz channel, be used so that transmit the data of same amount at half a duration sub-slots on the 400kHz channel or a full-time crack on a basic 200kHz channel, with respect to basic 200kHz channel, communication is with 2: 1 or 4: 1 time compression and difference.Therefore can receive one in the memory and burst accordingly by with a corresponding sampling rate suitable bandwidth being sampled and sampling being stored in according to receiver of the present invention.These sampling can be used then with using the identical treatment technology of bursting that any bandwidth time slot/sub-slots merging is received and come processed in non real-time.Therefore, can reduce the processing complexity.

In addition, can be according to base station of the present invention for being transmitted into burst allocation time slot/sub-slots duration, bandwidth and the chip rate of the portable terminal of communication with it, so that do not exceed the code-element period that ascertains the number in advance in the multidiameter delay expansion at the bandwidth place that is distributed.In other words, the portable terminal that bears maximum multipath delay spread can receive with minimum chip rate burst, and the portable terminal that bears minimum multidiameter delay expansion can receive with the highest chip rate and burst.Therefore can use same equalizer to come the balanced code element of storing of using according to mobile receiver terminal of the present invention with bursting that any available bandwidth/chip rate receives at each reception period of bursting.Therefore the equalizer capacity can be used as a factor determining the portable terminal channel allocation.

To divide only be that to imitate a time instantaneous Shuo Ming bandwidth and time in the accompanying drawings, for example, and described single tdma frame.As long as the serviced notified channel allocation of portable terminal, then bandwidth and time divide and can be changed to the next one fully from a tdma frame.And channel width is divided and to be provided so that to be assigned to the bandwidth of different mobile terminal during cycle common time not overlapping.

In addition, receiver can be provided to the first bandwidth hypothesis decoding data, and after detecting the good data failure based on this hypothesis, continues to use second bandwidth hypothesis so that handle stored data again.In order to adapt to this, the sampling rate that data can match with a bandwidth and with high bandwidth and sampled and be stored.Stored data then can be by filtering digitally so that reduce bandwidth and sampling rate.Such receiver also can be handled the stored data more than one channel distribution in the same time slot of decoding again by the digital filter that utilizes different center frequency.Receiver can also be instructed to receive the decode continuous a plurality of time slots, and according to the present invention, continuous time slot can be used different bandwidth and data rate is handled.Therefore, this technology can allow receiver to receive above single time slot that uses each frame or the more high data rate that the single frequency channel is transmitted those.

Though at the imitated embodiment of this discussion may developing of GSM and/or EDGE standard has been discussed, gone for for using according to adaptive bandwidth of the present invention and time slot duration such as D-AMPS (IS-136) TDMA standard or such as other mobile communication system of the CDMA standard of IS-95.The 1.2288MHz spreading rate by using it and the son of channel width are divided, and produce more narrow bandwidth channel in the IS-95CDMA standard and are used for using because the data transmission of the all-key sheet speed that is difficult to compensate that the expansion of high multidiameter causes thereby then be directed into according to adaptive bandwidth of the present invention and time slot duration.

In drawing and description, typical preferred embodiment of the present invention is disclosed, and, though used special term, but just nonrestrictive purpose is used them with a kind of general and descriptive understanding, and scope of the present invention is suggested in the appended claims.Just as used in this, term ＂ transmission ＂ can comprise emission or receive.Therefore, the communication system that transmits the receiver of transmitter that action can be by emission data burst (group), reception data burst (group) or transmit and receive data burst (group) is carried out.

Claims

1. one kind is used for the method from first communication equipment emission radio communication to second communication equipment during a communication session, and this method comprises:

During this communication session, use first bandwidth and first duration of bursting to launch first data burst; With

Use second bandwidth and second duration of bursting to launch second data burst during this communication session, wherein first bandwidth is greater than second bandwidth, and wherein first duration of bursting burst the duration less than second.

2. the method for claim 1 also comprises:

Use the 3rd bandwidth and the 3rd duration of bursting to launch the 3rd data burst during this communication session, wherein first and second bandwidth are greater than the 3rd bandwidth, and wherein first and second duration of bursting burst the duration less than the 3rd.

3. the method for claim 1, wherein:

Use first bandwidth and first duration of bursting to launch first data burst and comprise during this communication session: launch first data burst in the image duration very first time, wherein first data burst has a duration less than the duration of very first time frame; With

Using second bandwidth and second duration of bursting to launch second data burst and comprise during this communication session: emission second data burst during second time frame, wherein second data burst has a duration less than the duration of second time frame;

Wherein first and second time frames each all have the frame structure of a common frame cycle and a repetition so that use first and second time frames that time division multiple access communication is provided.

4. the method for claim 1, wherein first bandwidth and first product of bursting the duration are substantially equal to the burst product of duration of second bandwidth and second.

5. the method for claim 1, wherein first data burst is by with the emission of first data rate, and wherein second data burst is by with the emission of second data rate, and wherein first data rate is higher than second data rate.

6. method as claimed in claim 5, wherein, the data of a public amount are launched by first and second data bursts.

7. the method for claim 1, wherein, first data burst and second data burst are shared a public burst format, and wherein said public burst format is by according to described first and second data bursts first and second bursting the duration and convert separately.

8. the method for claim 1, wherein utilize code division multiple access to launch described first and second data bursts.

9. method that is used for from a base station radio communication to corresponding first and second portable terminals, described method comprises:

Use first bandwidth and first duration of bursting to launch first data burst to described first portable terminal; With

Use second bandwidth and second duration of bursting to launch second data burst and give described second portable terminal, wherein said first bandwidth is greater than described second bandwidth, and wherein said first duration of bursting burst the duration less than described second,

Be launched during the wherein said first and second data burst boths public in a plurality of time frames, the frame structure that wherein said time frame has a common frame cycle and a repetition provides time division multiple access communication.

10. method as claimed in claim 9 also comprises:

Launch the 3rd data burst in described image duration common time and give the 3rd portable terminal, wherein said the 3rd data burst uses the 3rd bandwidth that equals described second bandwidth and equaled for described second the 3rd of duration of bursting bursts the duration, wherein side by side transmits the described second and the 3rd data burst by different frequency bands.

11. method as claimed in claim 9, wherein, first bandwidth and first product of bursting the duration are substantially equal to the burst product of duration of second bandwidth and second.

12. method as claimed in claim 9, wherein first data burst is launched with first data rate, and wherein second data burst is launched with second data rate, and wherein first data rate is higher than second data rate.

13. method as claimed in claim 12, wherein, the data of a public amount are launched by first and second data bursts.

14. method as claimed in claim 9, wherein, first data burst and second data burst are shared a public burst format, and wherein said public burst format is by according to described first and second data bursts first and second bursting the duration and convert separately.

15. method as claimed in claim 9, wherein employing code division multiple access is launched first and second data bursts.

16. one kind is used for receiving method of wireless communication at the first communication equipment place from second communication equipment during a communication session, described method comprises:

During this communication session, use first bandwidth and first duration of bursting to receive first data burst from second communication equipment; With

During described communication session, use second bandwidth and second duration of bursting to receive second data burst from second communication equipment, and wherein said first bandwidth is greater than described second bandwidth, and described first duration of bursting burst the duration less than described second.

17. method as claimed in claim 16 also comprises:

During described communication session, use the 3rd bandwidth and the 3rd duration of bursting to receive the 3rd data burst from second communication equipment, and wherein said first and second bandwidth are greater than described the 3rd bandwidth, and wherein said first and second duration of bursting burst the duration less than the described the 3rd.

18. method as claimed in claim 16,

Wherein, during this communication session, use first bandwidth and first duration of bursting to receive first data burst from second communication equipment and be included in and receive first data burst image duration very first time;

Wherein, using second bandwidth and second duration of bursting to receive and receive second data burst during second data burst from second communication equipment is included in second time frame during this communication session; With

Wherein thereby each frame structure that all has a common frame cycle and a repetition of first and second time frames uses first and second time frames that time division multiple access communication is provided.

19. method as claimed in claim 16, wherein, first bandwidth and first product of bursting the duration are substantially equal to the burst product of duration of second bandwidth and second.

20. method as claimed in claim 16 wherein, receives first data burst with first data rate, wherein, receive second data burst with second data rate, and wherein first data rate is higher than second data rate.

21. method as claimed in claim 20, wherein, the data of a public amount are received by first and second data bursts.

22. method as claimed in claim 16, wherein, first data burst and second data burst are shared a public burst format, and wherein said public burst format was converted according to first and second data bursts, first and second duration of bursting separately.

23. method as claimed in claim 16, wherein, employing code division multiple access receives first and second data bursts.

24. one kind is used in the method for wireless communication of a base station reception from corresponding first and second communication equipments, described method comprises:

Use first bandwidth and first duration of bursting to receive first data burst from described first portable terminal; With

Use second bandwidth and second duration of bursting to receive second data burst from described second portable terminal, wherein said first bandwidth is greater than described second bandwidth, and wherein said first duration of bursting burst the duration less than described second;

The wherein said first and second data burst boths were received in image duration common time of a plurality of time frames, and the frame structure that wherein said a plurality of time frames have a public frame period and a repetition provides time division multiple access communication.

25. method as claimed in claim 24 also comprises:

Be received in three data burst of described image duration common time from the 3rd portable terminal, wherein said the 3rd data burst uses the 3rd bandwidth that equals described second bandwidth and equaled for described second the 3rd of duration of bursting bursts the duration, wherein side by side receives the described second and the 3rd data burst by different frequency bands.

26. method as claimed in claim 24, wherein, first bandwidth and first product of bursting the duration are substantially equal to the burst product of duration of second bandwidth and second.

27. method as claimed in claim 24, wherein first data burst is received with first data rate, and wherein second data burst is received with second data rate, and wherein first data rate is higher than second data rate.

28. method as claimed in claim 27, wherein, the data of a public amount are received by first and second data bursts.

29. method as claimed in claim 24, wherein, first data burst and second data burst are shared a public burst format, and wherein said public burst format is by according to described first and second data bursts first and second bursting the duration and convert separately.

30. method as claimed in claim 24, wherein, employing code division multiple access receives first and second data bursts.

31. a communication equipment comprises:

A controller, it produces first data set and second data set and is used for during a communication session and the second communication devices communicating; With

A transmitter, it uses first bandwidth and first duration of bursting that first data set is transmitted to described second communication equipment as first data burst, and it uses second bandwidth and second duration of bursting that second data set is transmitted to described second communication equipment as second data burst, wherein, described first bandwidth is greater than described second bandwidth, wherein said first duration of bursting burst the duration less than described second, and wherein said first and second data bursts are transmitted to described second communication equipment during communication session.

32. communication equipment as claimed in claim 31, wherein, described controller produces the 3rd data set that is used for described second communication devices communicating during communication session, and wherein said transmitter uses the 3rd bandwidth and the 3rd duration of bursting that described the 3rd data set is launched as the 3rd data burst, wherein said first and second bandwidth are greater than described the 3rd bandwidth, and wherein said first and second duration of bursting burst the duration less than the described the 3rd.

33. communication equipment as claimed in claim 31:

Wherein said transmitter is launched described first data burst in the image duration very first time, wherein said first data burst has a duration less than very first time frame duration; With

Wherein said transmitter is launched described second data burst during second time frame, wherein said second data burst has a duration less than the second time frame duration; With

Each frame structure that all has a public frame period and a repetition of wherein said first and second time frames uses described first and second time frames that time division multiple access communication is provided.

34. communication equipment as claimed in claim 31, wherein, first bandwidth and first product of bursting the duration are substantially equal to the burst product of duration of second bandwidth and second.

35. communication equipment as claimed in claim 31, wherein first data burst is launched with first data rate, and wherein second data burst is launched with second data rate, and wherein first data rate is higher than second data rate.

36. communication equipment as claimed in claim 35, wherein, described first and second data sets comprise the data of a public amount.

37. communication equipment as claimed in claim 31, wherein, first data burst and second data burst are shared a public burst format, and wherein said public burst format is by according to described first and second data bursts first and second bursting the duration and convert separately.

38. communication equipment as claimed in claim 31 also comprises: be coupled to a receiver of described controller, wherein said receiver receives the 3rd data burst.

39. communication equipment as claimed in claim 31, wherein, this communication equipment one of comprises in base station and the portable terminal, and wherein second communication equipment comprises another one in base station and the portable terminal.

40. communication equipment as claimed in claim 31, wherein, the transmitter employing code division multiple access is launched first and second data bursts.

41. the base station of a plurality of portable terminals of communicating by letter, described base station comprises:

A controller, its generation are used for first data set of first communication of mobile terminal and are used for second data set with second communication of mobile terminal; With

A transmitter, it uses first bandwidth and first duration of bursting that first data set is transmitted to described first portable terminal as first data burst, and it uses second bandwidth and second duration of bursting that second data set is transmitted to described second portable terminal as second data burst; Wherein said first bandwidth is greater than described second bandwidth, and wherein said first duration of bursting burst the duration less than described second, the wherein said first and second data burst boths were launched in image duration common time of a plurality of time frames, and the frame structure that wherein said time frame has a common frame cycle and a repetition provides time division multiple access communication.

42. base station as claimed in claim 41, wherein, described controller produces the 3rd data set that is used for the 3rd communications of Mobile Terminals, wherein said transmitter is transmitted to the 3rd portable terminal to described the 3rd data set as the 3rd data burst in described image duration common time, wherein said the 3rd data burst uses the 3rd bandwidth that equals described second bandwidth and equaled for described second the 3rd of duration of bursting bursts the duration, wherein side by side transmits the described second and the 3rd data burst by different frequency bands.

43. base station as claimed in claim 41, wherein, first bandwidth and first product of bursting the duration are substantially equal to the burst product of duration of second bandwidth and second.

44. base station as claimed in claim 41, wherein first data burst is launched with first data rate, and wherein second data burst is launched with second data rate, and wherein first data rate is higher than second data rate.

45. base station as claimed in claim 44, wherein, described first and second data sets comprise the data of a public amount.

46. base station as claimed in claim 41, wherein, first data burst and second data burst are shared a public burst format, and wherein said public burst format is by according to described first and second data bursts first and second bursting the duration and convert separately.

47. base station as claimed in claim 41 also comprises: be coupled to a receiver of described controller, wherein said receiver receives the 3rd data burst.

48. base station as claimed in claim 41, wherein, the transmitter employing code division multiple access is launched first and second data bursts.

49. a communication equipment comprises:

A receiver, it is configured to be received in during the communication session with second communication equipment a plurality of data bursts from described second communication equipment, wherein receiver uses first bandwidth and first duration of bursting to receive first data burst from described second communication equipment during communication session, and it uses second bandwidth and second duration of bursting to receive second data burst from described second communication equipment during communication session, wherein said first bandwidth is greater than described second bandwidth, and wherein said first duration of bursting burst the duration less than described second.

50. communication equipment as claimed in claim 49, wherein, described receiver uses the 3rd bandwidth and the 3rd duration of bursting to receive the 3rd data burst from described second communication equipment during communication session, wherein said first and second bandwidth are greater than described the 3rd bandwidth, and wherein said first and second duration of bursting burst the duration less than the described the 3rd.

51. communication equipment as claimed in claim 49:

Wherein said receiver receives first data burst in the image duration very first time;

Wherein said receiver receives second data burst during second time frame; And

52. communication equipment as claimed in claim 49, wherein, first bandwidth and first product of bursting the duration are substantially equal to the burst product of duration of second bandwidth and second.

53. communication equipment as claimed in claim 49, wherein first data burst is received with first data rate, and wherein second data burst is received with second data rate, and wherein first data rate is higher than second data rate.

54. communication equipment as claimed in claim 53, wherein, the data of a public amount are received by first and second data bursts.

55. communication equipment as claimed in claim 49, wherein, first data burst and second data burst are shared a public burst format, and wherein said public burst format is by according to described first and second data bursts first and second bursting the duration and convert separately.

56. communication equipment as claimed in claim 49 also comprises:

Launch a transmitter of the 3rd data burst.

57. communication equipment as claimed in claim 49, wherein, described communication equipment comprises one of a base station and a portable terminal, and wherein said second communication equipment comprises in a base station and the portable terminal another.

58. communication equipment as claimed in claim 49, wherein, described receiver employing code division multiple access receives first and second data bursts.

59. a base station comprises:

A receiver, be configured to receive a plurality of data bursts, wherein said receiver uses first bandwidth and first duration of bursting to receive first data burst from first portable terminal, and it uses second bandwidth and second duration of bursting to receive second data burst from second portable terminal, wherein said first bandwidth is greater than described second bandwidth, and described therein first duration of bursting burst the duration less than described second, the wherein said first and second data burst boths are received during one of a plurality of time frames, and the frame structure that wherein said a plurality of time frame has a common frame cycle and a repetition provides time division multiple access communication.

60. base station as claimed in claim 59, wherein said receiver is at three data burst of described reception image duration common time from the 3rd portable terminal, wherein said the 3rd data burst uses the 3rd bandwidth that equals described second bandwidth and equaled for described second the 3rd of duration of bursting bursts the duration, wherein side by side transmits the described second and the 3rd data burst by different frequency bands.

61. base station as claimed in claim 59, wherein, first bandwidth and first product of bursting the duration are substantially equal to the burst product of duration of second bandwidth and second.

62. base station as claimed in claim 59, wherein first data burst is received with first data rate, and wherein second data burst is received with second data rate, and wherein first data rate is higher than second data rate.

63. base station as claimed in claim 62, wherein, the data of a public amount are received by first and second data bursts.

64. base station as claimed in claim 59, wherein, first data burst and second data burst are shared a public burst format, and wherein said public burst format is by according to described first and second data bursts first and second bursting the duration and convert separately.

65. base station as claimed in claim 59 also comprises:

Launch a transmitter of the 3rd data burst.

66. base station as claimed in claim 59, wherein, described receiver employing code division multiple access receives first and second data bursts.

67. a method that is used for being transmitted into from a communication equipment receiver, described method comprises:

When detect that less than maximum transmission power one is pre-to determine that transmitted power level is enough to be used in the emission of first data rate and first emission duration; With

Determine when transmitted power level is enough to be used in described first data rate and the emission of the described first emission duration speed in advance in response to detecting, to determine a power level of power level and use than higher second data rate of first data rate and use second duration shorter to launch in advance than first duration greater than described.

68. as the described method of claim 67, the emission at the wherein said first data rate place takies first bandwidth and the emission at the described second data rate place takies second bandwidth greater than described first bandwidth.

69. as the described method of claim 67, wherein detect less than one of maximum transmission power to determine when transmitted power level is enough to be used in first data rate and the emission of first duration comprises in advance: expansion is estimated to the multidiameter in the transmission path between communication equipment and receiver.

70., wherein detect less than one of maximum transmission power to determine when transmitted power level is enough to be used in first data rate and the emission of first launch time also comprises in advance: the in advance definite performance of the estimation of described multidiameter expansion with described receiver compared as the described method of claim 69.

71., wherein detect less than one of maximum transmission power to determine when transmitted power level enough also comprises in advance:, select second data rate when the estimation of described multidiameter expansion during less than a predetermined threshold as the described method of claim 69.

72. as the described method of claim 69, wherein detect less than one of maximum transmission power and determine when transmitted power level enough also comprises in advance:, select with described first data rate emission when the estimation of described multidiameter expansion during greater than a predetermined threshold.

73. a method that is used for being transmitted into from a communication equipment receiver, described method comprises:

Detect the emission that a maximum transmission power is not enough to be used for first data rate and first emission duration; With

Be not enough to be used for described first data rate and the emission of the described first emission duration speed in response to detecting described maximum transmission power, with a power level being not more than described maximal power level and use than lower second data rate of first data rate and use second duration longer to launch than first duration.

74. as the described method of claim 73, wherein the emission at the first data rate place takies first bandwidth and the emission at the second data rate place takies second bandwidth greater than first bandwidth.

75. as the described method of claim 73, detect wherein that maximum transmission power is not enough to be used for first data rate and the emission of first duration comprises: the multidiameter expansion to the transmission path between communication equipment and receiver is estimated.

76., wherein detect the emission that maximum transmission power is not enough to be used for first data rate and first emission duration and also comprise: the pre-definite performance of the estimation of described multidiameter expansion with described receiver compared so that compensate multipath transmisstion as the described method of claim 75.

77. as the described method of claim 75, wherein detecting the emission that maximum transmission power is not enough to be used for first data rate and first emission duration also comprises: when described delay spread estimation during less than a predetermined threshold, select described first data rate.

78. as the described method of claim 75, wherein detecting the emission that maximum transmission power is not enough to be used for first data rate and first emission duration also comprises: when the estimation of described delay expansion during greater than a predetermined threshold, with described second data rate emission.

79. a method that is used for emission numerical data between a communication network and a plurality of portable terminal, described method comprises:

The radio spectrum of an amount of distribution is divided into the channel of first channel width and the channel of first channel width further is divided into a plurality of non-overlapped subchannel less than a second channel bandwidth of described first channel width;

The frame period of a repetition is divided into the time slot of first duration, and the described time slot of first duration further is divided into a plurality of non-overlapped sub-slots less than one second duration of the described first time slot duration;

When the transmission path that detects between specific in described communication network and the described portable terminal can support to take the emission of described first channel width with first data rate;

When can provide emission in response to the transmission path between specific that detects in described communication network and described portable terminal with first data rate, at least one sub-slots that distributes described second duration, described specific one that is used for described portable terminal is used described first data rate to launch numerical data; With

When the described transmission path between a communication network and the described specific portable terminal can not be supported emission with first data rate, distribute at least one sub-slots of described second channel bandwidth to be used for during at least one time slot of described first duration with second data rate emission data less than first data rate.

80. an adaptive bandwidth time-division multiple address system is used for transmitting data between a communication website and a plurality of portable terminal, described system comprises:

A TDMA emittor/receiver, the TDMA cycle of its repetition and a given radio spectrum are divided into time slot and frequency channels respectively, and its described time slot and frequency channels further are divided into sub-slots and subchannel respectively;

A time bandwidth distributor circuit, it is constant for the channel width that one of allocation of communications between network station and each portable terminal equals the time cycle of one of one of time slot or sub-slots and equals the frequency channels of subchannel at described frequency channels bandwidth and the product of described time cycle that this distributed basically.

81. as the described system of claim 80, wherein the tdma frame cycle of Chong Fuing equals 60000 circulations of one 13 megahertz clock in the duration.

82. as the described system of claim 80, wherein said time slot is 1/8th of the duration in frame period.

83. as the described system of claim 80, wherein said sub-slots be in the duration time slot half, 1/4th or 1/8th.

84. as the described system of claim 80, wherein said subchannel has a 200kHz bandwidth.

85. as the described system of claim 80, wherein said frequency channels has the bandwidth of 400kHz, a 800kHz or 1600kHz.

86. as the described system of claim 80, wherein said time bandwidth distributor considers that following at least one factor distributes a time and a bandwidth to segment to a specific portable terminal:

At least one propagation loss between described network station and the described user terminal;

To or from the needed power level of the emission of described portable terminal;

Can be used for or to or from a power of described portable terminal;

The multidiameter expansion of the propagation path between described network station and described portable terminal;

Be transmitted into or from another relative signal level of receiving of portable terminal, the bandwidth that another of described portable terminal is assigned with is divided and adjoined the bandwidth segmentation that will be assigned to described portable terminal; With

The performance of an equalizer of compensation multipath distortion in described network or terminal receiver.

87. an adaptive bandwidth communication system is used for transmitting data between a communication network station and a plurality of portable terminal, described system comprises:

A burst format device is used for the data formatting that is used to launch is become a pre-definite continuous modulated symbol;

A speed determiner is used to select a chip rate that is used to launch;

A transmitter is used for launching a signal determining continuous modulated symbol modulation with pre-with the transmission rate of described selection;

A receiver is used for receiving described transmit and described signal sampling and be converted into the Typical Digital sampling that is stored in a memory buffer;

A signal processor is used to handle the data that the digital sampling that is stored recovers to launch, and wherein said signal processor is handled described digital sampling according to substantially the same mode, and irrelevant with the chip rate of described selection.