JP2007534186A5 - - Google Patents

Claims (83)

The multiple symbols, each having at least one bit, the at least one receiver from a transmitter, a method for transmitting using at least one channel and a predetermined transmission power,
The symbol is transmitted with transmission energy specific to the receiver, and the transmission energy specific to the receiver is an upper limit value related to the receiver or a lower error recognition rate than the upper limit value on the receiver side. The reception of the symbol occurs with the reception energy corresponding to
Said receiver-specific transmission energy, at the same time, depending on the current transmission conditions between the transmitter and the receiver, in order to achieve a high bit rate as possible, the symbol duration, transmitted bit wherein the number per symbol, or the number per symbol of the symbol duration and the transmitted bits are adapted. A way to organize your network,
For each transmission of a plurality of symbols each having at least one bit from the transmitter to the at least one receiver, using at least one channel and a predetermined transmission power, the symbol is transmitted by the receiver-specific transmission energy ,
The receiver-specific transmission energy, the receiver side, resulting the reception of the symbols received energy corresponding to a lower value of the error recognition rate compared to the upper limit value or the upper limit value associated with the receiver,
Depending on the current conditions of transmission between the transmitter and the individual receiver, said a receiver-specific transmission energy, in order to achieve a high bit rate as possible at the same time, the symbol duration, or transmitted bit wherein the number per symbol or number per symbol of the symbol duration and the transmission bit is adapted. The method according to claim 1 or 2, only the symbol duration is relevant. Three available conform options, that is, the symbol duration of conformance, the number of conformance per symbol of the transmitted bit, and, per 1 symbol bits transmitted and the symbol duration the method according to claim 1 or 2 comprising the step of selecting from among the number both of conformance of. Spectral power density associated with a given transmit power and / or radiated electric field strength and / or radiated magnetic field strength and / or allowable power radiation amount in a channel-specific manner on a time average, or one the parameters related to the parameters described above, the method according to any one of assumed claims 1 to 4 the limit value corresponding to the maximum transmission energy available per time with respect to the allowed amount of radiation units . The predetermined transmission power, the method according to any one of claims 1 to 5 at most Oite time average in the technical design of the transmitter. The method according to the transmit power of any one of claims 1 to 6 that can be predetermined. 8. A method as claimed in any preceding claim , comprising the additional step of ascertaining a current value for the received energy at a given transmitted energy.   The method according to claim 1, wherein RSSI (Radio Signal Strength Indicator) measurement on the received power is performed on the receiver side and a signal depending on the measurement result is transmitted to the transmitter. 10. A method according to any one of the preceding claims, comprising another or additional step of ascertaining a current value for the error recognition rate. The method of claim 10, wherein the error recognition rate is confirmed by measuring a number of errors in a received data frame. The method according to claim 10 or 11, wherein the error recognition rate is ascertained by averaging the number of errors in a number of data frames. The method of claim 12, wherein the error recognition rate is ascertained by the number of negative received signals from a receiver in a scheduled period. The method according to any one of claims 1 to 13, wherein the error recognition rate is a bit error rate (BER), a block error rate (BLER), or a frame error rate (FER). Conformance of the symbol duration, the reception terminal, any one of claims 1 to 14 the current value of the error recognition rate, or, to be performed in dependence on the current magnitude of the noise power density at the receiving terminal The method described in one. 16. A method as claimed in any preceding claim, wherein the receiver communicates a current error recognition rate or current noise power density magnitude to a transmitter. The method according to claim 1, wherein the transmitter estimates a current magnitude of a current error recognition rate or noise power density at a receiving terminal. The symbol or the number of bits contained in the symbol, or both, is the current transmission between the transmitter and the receiver on the existing connection or on-going data update without interruption of the connection or data update. the method according to any one of claims 1 to 17 depending on the condition being adjusted dynamically. 19. A method as claimed in any preceding claim, wherein the change in symbol duration occurs continuously with respect to time, occurs semi-continuously, or occurs at a predetermined time interval . The symbol duration, for each channel, that is, the method according to any one of claims 1 to 19, which is conform the channels each being used. 21. A method according to any one of the preceding claims, wherein the symbol duration is limited towards a short symbol duration value for each channel depending on the channel bandwidth. The method according to claim 1, wherein the symbol duration is determined from a spectrum of consecutive values. The symbol duration is determined from the spectrum of discrete values, the spectrum of the discrete values, according to any one of claims 1 to 21 containing the most integral multiple of shorter symbol duration allowed per channel the method of.

The symbol duration T _symbol is determined at the transmitting terminal based on the formula: where E _min is the received energy corresponding to the upper limit associated with the receiver in terms of error recognition rate, and P _send is the maximum transmit power in it, r is the distance between the transmitter and the receiver, r ₀ is the reference distance, and, alpha a method according to any one of claims 1 to 23 is the propagation coefficient. The choice of the number per transmission bit symbol is the current value of the error recognition rate at the receiving terminal, or any one of claims 1 to 24 executed by the current magnitude of the noise power density at the receiving terminal The method according to one. 26. The method according to any one of claims 1 to 25, wherein the number of transmitted bits per symbol is adapted for each channel. When the shortest symbol duration for each channel is already in use, the method according to any one of claims 1 to 26 conform number per symbol of the transmitted bit is performed. Possible types of a symbol with the maximum number of bits is selected for transmission, the type at the receiving terminal, according to any one of claims 1 to 27 which does not exceed the upper limit of the error recognition rate Method. The method according to any one of claims 1 to 28, wherein the symbol is transmitted in a state of being divided into a plurality of sequences of chips. The symbols are expanded with respect to the frequency which is modulated by noise or pseudo-noise sequence, The method of claim 29 the noise or pseudo-noise sequences are known to the receiver. The method of claim 30, wherein the noise or pseudo-noise sequence is dynamically adapted to a selected symbol duration. 32. A method according to any of claims 1-31, wherein the symbols are conveyed in such a way that the available channel bandwidth is fully used. The method according to any one of claims 1 to 32, wherein the symbols are transmitted in terms of frequency. 34. A method according to any one of claims 1 to 33, wherein the symbols are conveyed in the form of a chirp signal. Chirp signal from the transmitter is directed to the respective receiver, the method according to claim 34 which is superposition time. Mutually the superposition chirp signals, the sum of the transmission power which is temporally radiation instantaneously The method of claim 35, wherein equal to the maximum allowed transmit power for each channel. 37. A method according to any one of claims 1 to 36, wherein the symbols are transmitted in a CDMA sequence. The method according to any one of claims 1 to 37, wherein the symbol is transmitted in a frame of FDMA method. Division into FDMA channel, The method of claim 38 dynamically carried out to allocate the bandwidth of the lower good channel transmission state receiver.   40. The method according to any one of claims 1 to 39, wherein the TDMA method is used on at least one channel. 41. The transmitter according to claim 1, wherein the transmitter is a user's mobile terminal and receives information about a frequency band to be used for transmission from the base station before transmitting a symbol to the base station. The method described in 1. The base station operating as the transmitter checks a signal arriving in a plurality of modulation modes from a mobile terminal operating as a transmitter, and determines a modulation mode recognized as accurate for reception of the signal from the mobile terminal. 42. A method according to any one of claims 1 to 41 for use. The base station operating as the receiver receives the incoming signals according to multiple receivers, the modulation mode is associated with each receiver, the mobile terminal operating as the transmitter, for transmission symbol to the base station 43. The method according to any of claims 1 to 42, wherein one of the modulation modes available at the transmitting terminal is used. Transmitter that perform the method of any of claims 1-43. A transmitter performing the method of any of claims 1-43,
1-bit or logic symbols (hereinafter, referred to as symbols) indicating a plurality of bits to generate a signal representative of a transmission unit that radiate a signal of that,
The current based on the items of information present on the transmission state, the upper limit value or on the error recognition rate associated with the receiver error recognition rate lower than the upper limit value between the transmitter and the receiver of the symbol receiver-specific transmission energy corresponding and a control unit you supply generates control signals defining for said transmission unit,
Wherein the control unit further current depending on the transmission state, in order to achieve a high bit rate receiver-specific transmission energy and as much as possible, the symbol duration, suitably conform between the transmitter and the receiver symbol having a time, or a symbol having a number that is properly conform per symbol of transmitted bits or, suitably adapted appropriately adapted symbols with the number per symbol of the symbol duration and the transmission bit transmitter generates a control signal you define for the transmission units used, and supplying the. The control unit has a suitably adapted symbol duration to achieve a receiver specific transmission energy and as high a bit rate as possible, depending on the current transmission state between the transmitter and the receiver 45. A transmitter as claimed in claim 44, wherein only the alternative means for generating and supplying a control signal defining the use of symbols for the transmitting unit . The control unit selects one or more of many available application options, and the current transmission state between the transmitter and receiver to create and provide a signal indicative of the determined selection is adapted in dependence on the application option, the symbol duration of conformance, conformance of the number of transmission bits per symbol, and, according to claim 44, including both conformance of the number of transmission bits per symbol duration and the symbol 45, 46 or 46. Transmit power and / or radiated field strength and / or radiated magnetic field strength and / or spectral power density related to allowable power radiation is equal to a predetermined maximum value or within the limits of the technical design of the transmitter or a maximum value, or the parameters associated with one or more of the aforementioned parameters, any one of claims 44 to 47 taking the limit value corresponding to the allowable maximum transmission energy per unit associated time the permissible radiation The transmitter according to one. Control unit, the current error recognition rate of the receiver or transmitter according to any one of claims 44 to 48 current magnitude that also estimates the noise power density. Depending on the current conditions of transmission between the transmitter and the receiver, the bit number, or both are included in the symbol duration or a symbol, dynamically re-determined by the existing connection or data communication is in progress, was treated similarly to the transmission unit by appropriate control signal, the transmission unit is connected or without interrupting data communication, in any one of claims 44 to 49 you implement a defined adapted The transmitter described. 51. The control unit according to any one of claims 44 to 50, wherein the control unit is adapted to continuously re-determine a symbol duration in time by quasi-continuously changing or changing to a predetermined time interval. Transmitter. 52. Transmitter according to any one of claims 44 to 51, wherein the control unit is adapted to determine the symbol duration in a channel specific manner, i.e. individually for each channel used.

The control unit is adapted to determine the symbol duration T _symbol , where E _min is the received energy corresponding to the upper limit of the error recognition rate associated with the receiver, and P _send is the maximum transmit power, r is the distance between the transmitter and the receiver, r ₀ is the reference distance, and, alpha is claimed in any one of claims 44 to 52 is the propagation coefficient Transmitter. The control unit may select the number of transmitted bits per symbol depending on the current error recognition rate at the receiving terminal or depending on the current noise power density at the receiving terminal. the transmitter according to any one of claims 44 to 53 performed. 55. A transmitter as claimed in any one of claims 44 to 54, wherein the control unit adapts the number of transmitted bits per symbol in a channel specific relationship. When the shortest symbol duration in channel-specific relationship is used, the control unit, according to any one to claims 44 to 55 that perform conformance number per symbol of transmitted bits Transmitter. Wherein the control unit selects the maximum of the types of symbol bits available for transmission, the receiver terminal, as claimed in any one of claims 44 to 56 not to exceed the upper limit of the error recognition rate Transmitter. The transmission unit includes a transmitter according to any one of claims 44-57 that radiate the symbols to be distributed to a sequence of chips. The transmission unit has been predetermined by the control unit, as long as modulating the symbols in the known noise or pseudo-noise sequence in the receiver, either of claims 44 to 58 that radiate an enlarged symbol frequency The transmitter according to any one of the above. Wherein the control unit, the noise or pseudo noise sequence to be used by the transmitting unit, the transmitter according to any one of claims 44 to 59 which are dynamically adapted to the selected symbol duration. The control unit, as available channel bandwidth is fully used, the transmitter according to any one of claims 44 to 60 which Ru is actuated transmission unit for symbol radiation. The transmission unit includes a transmitter according to any one of claims 44-61 that radiate symbols enlarged with respect to frequency. The transmitter according to the transmission unit, any one of claims 44-62 that radiate symbols in the form of a chirp signal. The transmission unit includes a transmitter according to any one of claims 44 to 63 for superposition the intended chirp signal for each receiver with respect to time. Are mutually superposition chirp signals, the sum of the transmission power emitted instantaneously transmitter of claim 64 is equal to the maximum permitted transmission power in each channel. The transmission unit includes a transmitter according to any one of claims 44 to 65 that sends symbols in the form of a form or TDMA methods CDMA series form or FDMA method. The control unit determines a control signal for the transmitting unit that uses one of a plurality of available access methods in communication with the receiver, depending on the current transmission state between the transmitter and the receiver, transmitter according to create, and any one of claims 44 to 66 you supply. 68. The transmitter of claim 67, wherein the transmission unit is connected to a data memory that includes transmission parameters or signal patterns of different symbol types. The transmitter according to any one of claims 44 to 68 having a distributed delay unit for signal enhancement. Connected to said transmitter unit and transmitter according to any one of claims 44 to 69 that generates an m-sequence for signal enhancement. The transmitter according to any one of claims 44 to 70 capable of reading out of radiation can signal either stored in memory, or from the shift register structure. The transmitter unit produces a signal that will be emitted by execution of one or more algorithms performed in the form of a corresponding circuit or Sofutouaea, depending on the control signal from the control unit Ki base is currently emitted the transmitter according to any one of claims 44 to 71 that generates a signal. Said transmission unit has a signal sequencer and an IQ modulator connected to its output side, and the signal to be transmitted to the signal sequencer after the creation of that signal and then to the IQ modulator unit passed through a, and, then, the transmitter according to any one of claims 44 to 72 that converts direct its signal to the conveyor belt. The transmission unit generates a signal to be transmitted internally in digital, the transmission unit according to claim digital signal generated internally has a digital-to-analog converter which passes in front of the radiation 44-73 The transmitter according to any one of the above. The transmitter according to any one of claims 44 to 74 having programmable transmission mechanism forming (software defined radio). The transmitter of claim 75 wherein the transmission mechanism forming is a dynamic variable.   77. A transmitter as claimed in any one of claims 44 to 76, comprising a channel estimation unit. 78. A transceiver comprising a transmitter device and a receiver device, wherein the transmitter device has the transmitter characteristics of any one of claims 44-77. The receiver device, the information about the frequency band used in the transmission, receiving from the base station related, and, prior to transmission of the symbol to the base station, directing the information to the transmitter device, the user 79. A transceiver as claimed in claim 78 in the form of a mobile terminal.   80. A transceiver as claimed in claim 79 in the form of a base transmitter station of a mobile radio network. The receiver device, by the communication channel, perform the RSSI measurements of the power received from the second transceiver (radio signal strength indicator), and a signal based on the measurement result is adapted to transmit the transmitter device, the transmitter device, a transceiver according to any one of the signals representing the measured results second claim Ru transmitted to transceiver 78-80. The control unit of the transmitter device, the results of the RSSI measurement from the second transmission receiver, transceiver of claim 81 that creates its control signal. Receiver for implementing the method according to any one of claims 1-43.