CN100512085C - Radio communication device and communication mode alter method - Google Patents
Radio communication device and communication mode alter method Download PDFInfo
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- CN100512085C CN100512085C CNB2005100871183A CN200510087118A CN100512085C CN 100512085 C CN100512085 C CN 100512085C CN B2005100871183 A CNB2005100871183 A CN B2005100871183A CN 200510087118 A CN200510087118 A CN 200510087118A CN 100512085 C CN100512085 C CN 100512085C
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Abstract
The present invention provides a radio communication apparatus, a communication mode changing method and a program which can increase the possibility capable of continuing communication. The radio communication apparatus comprises: an RF part 44 which performs radio communication using at least one frequency channel; and a control part 40 which acquires monitoring object frequency channel receiving state data indicating a receiving state of a signal to be received in at least one frequency channel except a communication midfrequency channel which is a frequency channel used by the RF part 44 and changes the modulation system used when a radio communication means transmits a radio signal based on a receiving state indicated by the monitoring object frequency channel receiving state data monitored by a monitoring object frequency channel receiving state acquisition means.
Description
Technical field
The present invention relates to a kind of radio communication device and communication pattern variation, particularly relate to a kind of technology that changes communication patterns such as modulation system corresponding to the electric wave accepting state.
Background technology
As while changing the communication pattern when sending wireless signal, the technology that communicates, while be well known that link circuit self-adapting (linkadaptation) technology that changes modulation system, communicates.In this link adaptation techniques, change modulation system corresponding to the electric wave accepting state, can realize using best modulation system to communicate thus corresponding to wireless communication state.In addition, in patent documentation 1, the technology that is used for alleviating at the mobile terminals of diversity (diversity) mode the disturbing wave influence is disclosed.
Patent documentation 1: the spy opens the 2002-319879 communique
Summary of the invention
In above-mentioned existing link adaptation techniques, the SINR (Signalto Interference plus Noise Ratio: signal and interference-to-noise ratio) of received signal is obtained as accepting state.Then, change modulation system corresponding to this SINR.
But, under the situation of the many-valued degree of modification such as quadrature phase Modulation and Amplitude Modulation mode, be worth manyly more, disturbing wave and The noise are just big more.Therefore, by improving under the situation that many-valued degree changes modulation system, unconspicuous disturbing wave of performance and The noise become obvious among the SINR of the received signal under the low state of many-valued degree.That is, only changing under the situation of modulation system corresponding to the SINR of received signal, if change modulation system in the mode that improves many-valued degree, then can not demodulation, thus there is the possibility that can not continue to communicate by letter.
The present invention proposes in view of the above problems, its purpose is, changing in the mode that improves many-valued degree under the situation of modulation system even provide a kind of, radio communication device, communication pattern variation and the communication pattern that also can improve the possibility that can continue to communicate by letter alter the procedure.
The present invention in order to address the above problem is characterized in that, comprises with the lower part: wireless communication unit, and it uses at least one frequency channels to carry out radio communication; Monitored object frequency channels accepting state obtains the unit, it will promptly communicate by letter at least one frequency channels the medium frequency channel as the monitored object frequency channels except the frequency channels that is used by above-mentioned wireless communication unit, obtain the monitored object frequency channels accepting state data of the accepting state of the signal that expression receives by this monitored object frequency channels; And modulation system change unit, it changes the modulation system of using when above-mentioned wireless communication unit sends wireless signal according to the accepting state by above-mentioned monitored object frequency channels accepting state data representation.
Thus, can be according to monitored object frequency channels accepting state data, the change modulation system, so before the change modulation system, can confirm at least a portion of the unconspicuous disturbing wave of performance and noise among the SINR of the received signal under the low state of many-valued degree in advance, changed modulation system with the situation that increases many-valued degree under, also can improve the possibility that can continue to communicate by letter.
In addition, above-mentioned radio communication device is equipped with a plurality of antennas, above-mentioned wireless communication unit uses at least one antenna in above-mentioned a plurality of antenna to carry out radio communication, this radio communication device also comprises antenna amount change unit, the modulation system that it uses when sending wireless signal according to above-mentioned wireless communication unit, the antenna amount that change is used by above-mentioned wireless communication unit.Thus, can be according to the accepting state of the signal that in the monitored object frequency channels that uses by above-mentioned wireless communication unit, receives, the change modulation system is so can improve the possibility that continues communication.
In addition, above-mentioned radio communication device comprises that also communication medium frequency channel reception status obtains the unit, it obtains the communication medium frequency channel electric wave accepting state data of expression by the accepting state of the signal of above-mentioned communication medium frequency channel reception, above-mentioned modulation system change unit, according to accepting state, change the modulation system of using when above-mentioned wireless communication unit sends wireless signal by above-mentioned communication medium frequency channel reception status data representation.Thus, under the situation of change modulation system, can further improve the possibility that continues communication.
In addition, above-mentioned radio communication device also comprises disturbing wave intensity data computing unit, it is according to by the accepting state of above-mentioned monitored object frequency channels accepting state data representation and accepting state by the above-mentioned medium frequency channel reception status data representation of communicating by letter, calculate the disturbing wave intensity data of expression at the disturbing wave intensity of above-mentioned communication medium frequency channel, above-mentioned modulation system change unit, according to above-mentioned disturbing wave intensity data, change the modulation system of using when above-mentioned wireless communication unit sends wireless signal.Thus, can be according to the disturbing wave intensity data, the change modulation system.
In addition, above-mentioned radio communication device, comprise a plurality of above-mentioned wireless communication units, above-mentioned monitored object frequency channels accepting state obtains the unit, will except the frequency channels that uses by first wireless communication unit promptly at least one frequency channels the first communication medium frequency channel as the first monitored object frequency channels, second wireless communication unit except above-mentioned first wireless communication unit receives the signal of the above-mentioned first monitored object frequency channels, obtains the first monitored object frequency channels accepting state data of expression by the accepting state of the signal of this first monitored object frequency channels reception thus.Thus, can in other wireless communication units, calculate monitored object frequency channels accepting state data, thereby can use wireless communication unit effectively.
In addition, above-mentioned radio communication device also comprises: the carrier wave generation unit, and it generates the carrier wave of assigned frequency; And the carrier wave input unit, it will import above-mentioned wireless communication unit by the carrier wave that above-mentioned carrier wave generation unit generates, and above-mentioned second wireless communication unit receives the signal of the above-mentioned first monitored object frequency channels according to the carrier wave by above-mentioned carrier wave input unit input.
In addition, in above-mentioned radio communication device, above-mentioned monitored object frequency channels accepting state obtains the unit, will except a plurality of frequency channels the above-mentioned first communication medium frequency channel as the second monitored object frequency channels, above-mentioned carrier wave generation unit, in a plurality of frequencies of switching the above-mentioned second monitored object frequency channels, generate above-mentioned carrier wave.
In addition, in above-mentioned radio communication device, the frequency of the above-mentioned second monitored object frequency channels is the adjacent channel and time adjacent channel of the above-mentioned first communication medium frequency channel.
In addition, the radio communication device of another embodiment of the invention is characterized in that, comprises with the lower part: a plurality of antennas; Wireless communication unit, it uses at least one frequency channels and at least one antenna to carry out radio communication; Monitored object frequency channels accepting state obtains the unit, it will promptly communicate by letter at least one frequency channels the medium frequency channel as the monitored object frequency channels except the frequency channels that is used by above-mentioned wireless communication unit, obtain the monitored object frequency channels accepting state data of the accepting state of the signal that expression receives by this monitored object frequency channels; And antenna amount change unit, it is according to the accepting state by above-mentioned monitored object frequency channels accepting state data representation, and change is by the antenna amount of above-mentioned wireless communication unit use.
In addition, communication pattern variation of the present invention is characterized in that, may further comprise the steps: the radio communication step, and it uses at least one frequency channels to carry out radio communication; Monitored object frequency channels accepting state obtains step, it will promptly communicate by letter at least one frequency channels the medium frequency channel as the monitored object frequency channels except the frequency channels that uses in above-mentioned radio communication step, obtain the monitored object frequency channels accepting state data of the accepting state of the signal that expression receives by this monitored object frequency channels; And modulation system change step, it changes the modulation system of using when sending wireless signal in above-mentioned radio communication step according to the accepting state by above-mentioned monitored object frequency channels accepting state data representation.
In addition, communication pattern of the present invention alters the procedure, and it is characterized in that, computer is played a role as following components: wireless communication unit, and it uses at least one frequency channels to carry out radio communication; Monitored object frequency channels accepting state obtains the unit, it will promptly communicate by letter at least one frequency channels the medium frequency channel as the monitored object frequency channels except the frequency channels that is used by above-mentioned wireless communication unit, obtain the monitored object frequency channels accepting state data of the accepting state of the signal that expression receives by this monitored object frequency channels; And modulation system change unit, it changes the modulation system of using when above-mentioned wireless communication unit sends wireless signal according to the accepting state by above-mentioned monitored object frequency channels accepting state data representation.
Description of drawings
Fig. 1 is the pie graph of the mobile communication system of embodiment of the present invention.
Fig. 2 is the hardware structure diagram of the base station apparatus of embodiment of the present invention.
Fig. 3 is the hardware structure diagram of the mobile station apparatus of embodiment of the present invention.
Fig. 4 is the functional block diagram of the base station apparatus of embodiment of the present invention.
Fig. 5 is the hardware structure diagram of the acceptance division of embodiment of the present invention.
Fig. 6 is the processing spec figure when detecting disturbing wave of embodiment of the present invention.
Fig. 7 is the process chart of the base station apparatus of present embodiment.
Embodiment
Following with reference to accompanying drawing, embodiments of the present invention are described.
The mobile communication system 1 of present embodiment as shown in Figure 1, comprises base station apparatus 2, mobile station apparatus 3, communication network 4 and constitutes.Base station apparatus 2 communicates with a plurality of mobile station apparatus 3 usually.
Base station apparatus 2 comprises control part 21, storage part 22, wireless communication part 23, network interface portion 24 and constitutes as shown in Figure 2.The each several part of control part 21 control base station apparatus 2, the processing that execution is relevant with conversation or data communication.Storage part 22 is as the working storage of control part 21 and move.In addition, program of the present invention is also stored in these storage part 22 maintenances and relevant program and the parameter of various processing that control part 21 carries out.Wireless communication part 23 is equipped with a plurality of antennas and a plurality of detector arrangements corresponding with each antenna, and carry out following processing, promptly receive respectively and demodulation comes from the audio signal of at least one mobile station apparatus 3 or communication with packet etc., export to control part 21 then, perhaps according to indication from control part 21 inputs, to modulating with packet etc., export via antenna then from the audio signal of control part 21 input or communication.Network interface portion 24 is connected with communication network 4, receives the audio signal come from communication network 4 or communication with packet etc., exports to control part 21 then, perhaps according to the indication of control part 21, sends audio signals or communication with packet etc. to communication network 4.
Mobile station apparatus 3 comprises control part 31, storage part 32, wireless communication part 33 and constitutes as shown in Figure 3.The each several part of control part 31 control mobile station apparatus 3, the processing that execution is relevant with conversation or data communication.Storage part 32 is as the working storage of control part 31 and move.In addition, program of the present invention is also stored in these storage part 32 maintenances and relevant program or the parameter of various processing that control part 31 carries out.Wireless communication part 33 is equipped with antenna and detector arrangement, and carry out following processing, promptly according to indication from control part 31 inputs, audio signal or communication are modulated with packet etc., export via antenna then, perhaps reception and demodulation send to the audio signal of antenna or communicate by letter and use packet, export to control part 31 then.
In the base station apparatus 2 and the communication between the mobile station apparatus 3 of present embodiment, and use TDMA (Time Division Multiple Access: time division multiple access)-TDD (TimeDivision Duplex: mode time division duplex).
Fig. 4 is the functional block diagram of the base station apparatus 2 of present embodiment.This base station apparatus 2 as shown in Figure 4, comprise that (Radio Frequency: portion 44 and constituting radio frequency), each RF portion 44 comprise sending part 45, acceptance division 46 respectively and constitute for control part 40, a plurality of oscillating portion 41, a plurality of switching part 42, a plurality of dispenser 43, a plurality of RF.Oscillating portion 41 is made of 2 paired oscillating portions.That is, oscillating portion 41-1-1 and oscillating portion 41-1-2 become a pair of.Equally, oscillating portion 41-2-1 and oscillating portion 41-2-2 become a pair of.
Control part 40 is realized by control part 21, will will export to for example network interface portion 24 from the signal of RF portion 44 outputs simultaneously from the signal input RF portion 44 of for example network interface portion 24 inputs.In addition, decision should be by the frequency of the carrier wave of oscillating portion 41 vibration.And, control oscillating portion 41, indication oscillating portion 41 generates carrier waves, and this carrier wave is to use in the frequency translation when carrying out signal transmitting and receiving in RF portion 44.
Oscillating portion 41 generates carrier wave according to the indication of control part 40, exports to switching part 42 then.Switching part 42 is according to the indication of control part 40, switches the oscillating portion 41 that is connected with dispenser 43, and the carrier wave of the frequency corresponding with each time slot is selected in the timing of the time slot (time slot) with corresponding to TDMA mode for example the time, imports RF portion 44 then.
Dispenser 43 will be given each sending part 45 and acceptance division 46 from the allocation of carriers of switching part 42 inputs.Because mobile communication system 1 is used the TDD mode, so send and receive with regard to switching every official hour.Profit in such a way, dispenser 43 will be given sending part 45 from the allocation of carriers of switching part 42 inputs at the time band that sends, and at the time band that receives, will give acceptance division 46 from the allocation of carriers of switching part 42 inputs.
44-1 of RF portion and the 44-2 of RF portion can realize signal transmitting and receiving diversity or adaptive array.45 pairs of sending parts are encoded and are modulated from the signals of control part 40 inputs, obtain modulation signal, by with this modulation signal with synthetic from the carrier wave of dispenser 43 inputs, and carry out frequency translation, then from the antenna transmission to the radio zone between.The carrier wave of importing sending part 45-1 and sending part 45-2 respectively is to import from dispenser 43-1 and dispenser 43-2 respectively, but these carrier waves can be the carrier waves of same frequency.Thus, can realize that signal sends the transmission directive property in diversity or the adaptive array.
Like this, can in 1 RF portion 44, receive the signal of 2 frequencies, a signal can be used to receive and the relevant signal of communicating by letter thus, and another signal is used to detect disturbing wave.So-called disturbing wave is the electromagnetic wave that disturbs the frequency of the signal frequency relevant with communication.In the present embodiment, in order to detect this disturbing wave, in oscillating portion 41-1-1 and oscillating portion 41-1-2, generate the carrier wave that is used to receive with the relevant signal of communicating by letter, in oscillating portion 41-2-1 and oscillating portion 41-2-2, generate the carrier wave that is used to receive the signal relevant with disturbing wave.Like this, by the synthetic carrier wave that is generated by oscillating portion 41-2-1 and oscillating portion 41-2-2, acceptance division 46 can receive disturbing wave.In addition, calculating for the reception power that in acceptance division 46-1 and acceptance division 46-2, realizes signal receive diversity or adaptive array, importing acceptance division 46-1 and acceptance division 46-2 and the carrier wave relevant signal of communicating by letter respectively from dispenser 43-1 and dispenser 43-2, is the carrier wave of same frequency.
Below describe in detail and be used to carry out the processing that disturbing wave detects.Fig. 6 is the key diagram that is used to illustrate the processing when detecting disturbing wave.In mobile communication system 1, use the TDMA-TDD mode, receive repeatedly/send along time shaft, simultaneously, each process of reception/transmission is divided into littler time slot, to carry out a plurality of communications.In Fig. 6, the time slot that is used to receive represents that with 100-m-n (m, n are natural numbers) time slot that is used to send is represented with 101-m-n (m, n are natural numbers).At this m is in the time slot of same numbers, uses identical frequency to communicate.
In 1 time slot, acceptance division 46 or sending part 45 utilize the carrier wave of same frequency, and the signal relevant with above-mentioned communication carried out frequency translation.In the present embodiment, as mentioned above, when receiving the signal relevant, also receive the signal relevant with disturbing wave with communication.Also receiving under the situation of the signal relevant with this disturbing wave, from the carrier wave of dispenser 43-2 input, in 1 time slot, switch 4 frequencies, can receive the signal relevant thus with the disturbing wave of 4 frequencies.These 4 frequencies are respectively adjacent channel and the inferior adjacent channels with the frequency of the relevant signal of communication.Channel is in the first-class arranged spaced of frequency axis, so-called adjacent channel is meant channel adjacent with the frequency of signal of communication on frequency axis, so-called adjacent channel, being channel adjacent with the frequency of adjacent channel on frequency axis, is the channel with frequency of the frequency that is different from the signal relevant with communication.In Fig. 6, represent frequency with the relevant signal of communication with x, represent the frequency of adjacent channel with x-1, x+1, represent the frequency of inferior adjacent channel with x-2, x+2.In addition, here as an example, show the situation of the signal that receives 4 frequencies, but also can not be 4.
As mentioned above, by in 1 time slot, detecting 4 disturbing waves, can according to the signal relevant with this disturbing wave with the signal of communicating by letter and being correlated with, obtain disturbing wave intensity data with the relevant signal of communicating by letter.In the disturbing wave intensity data, desired signal) and the ratio of the accepting state of the signal of being correlated with (UndesiredSignal: not desired signal) for example can use D/U than (Desired/Undesired ratio), the signal that this D/U is more relevant with communication than expression (Desired Signal: with disturbing wave.That is, disturbing wave with respect to the bigger situation of the relevant signal of communication under, be difficult to from signal of communication, separate useful signal.The disturbing wave intensity data uses as the data of representing this difficulty.In addition, as the frequency channels accepting state data of each signal accepting state of expression, can use each RSSI of signals (Received Signal Strength Indicator, receiving intensity) or SINR.Below, the situation of using D/U to liken to the disturbing wave intensity data is described.
According to the disturbing wave intensity data of obtaining like this, the communication pattern of the signal that change is relevant with communication.Specifically, under the little situation of disturbing wave intensity data, the receiving intensity that is disturbing wave can change to the modulation system strong to disturbing wave than under the big situation of the receiving intensity of expectation ripple, also can decide the quantity of employed antenna corresponding to the disturbing wave intensity data.
Below the more specifically example of the processing of communication pattern is changed in explanation.
In first embodiment, will be average to RSSI and the data that obtain as total receiving intensity, utilize following calculating formula (1) to calculate D/U then than E, described RSSI is as the data of the accepting state of expression adjacent channel and time adjacent channel.Wherein, D is the RSSI of signals relevant with communication, and Ui is the RSSI of signals relevant with the disturbing wave of frequency i.In addition, n (wherein n=4) is a channel quantity of measuring disturbing wave.
E＝D/(n×(U
x-2+U
x-1+U
x+1+U
x+2))……(1)
Then, than E, the table 1 below utilizing decides the modulation system with the relevant signal of communicating by letter according to the D/U that obtains like this.Specifically, according to D/U ratio based on the RSSI of the disturbing wave of in time slot 100-1-1, measuring, the modulation system of the signal relevant among the decision time slot 100-1-1 with communication.
(table 1)
| E[dB] | More than or equal to 44 | 45～44 | 43～41 | 40～38 | Be less than or equal to 37 |
| Modulation system | π/4DQPSK | 16QAM | 24QAM | 32QAM | 64QAM |
Thus, can change modulation system corresponding to the disturbing wave intensity data relevant, thereby can improve the possibility that can continue to communicate by letter with communication.
In a second embodiment, will to RSSI add up to and the data that obtain as total receiving intensity, utilize following calculating formula (2) to calculate D/U then than E, described RSSI obtains the disturbing wave weighting of each channel of measuring disturbing wave.Wherein, making the power of adjacent channel is 2 times of time adjacent channel.In addition, n (wherein n=1+2+2+1=6) is the channel quantity of the disturbing wave after the mensuration weighting.
E＝D/(n×(U
x-2+U
x-1×2+U
x+1×2+U
x+2))……(2)
Then, utilize and the same table of table 1, than E, decide modulation system with the relevant signal of communicating by letter according to D/U.Thus, can change modulation system corresponding to the disturbing wave intensity data relevant, thereby can improve the possibility that can continue to communicate by letter with communication.
In the 3rd embodiment,, calculate the D/U ratio for each channel of measuring disturbing wave.Specifically, shown in following calculating formula (3), calculate the D/U corresponding and compare E with each channel
i
E
i＝D/U
i(i＝x-2，x-1，x+1，x+2)……(3)
Then, compare E according to the D/U that obtains like this
i, the table 2 below utilizing decides the modulation system with the relevant signal of communicating by letter.That is, select the easiest modulation system of carrying out Signal Separation in 4 kinds of modulation systems, described 4 kinds of modulation systems are respectively the influence that the disturbing wave intensity data with the relevant signal of communicating by letter applies to be obtained according to each disturbing wave.For example, at E
X-2=45, E
X-1=40, E
X+1=36, E
X+2Under=30 the situation, the modulation system of obtaining respectively according to these data is π/4DQPSK, π/4DQPSK, 16QAM, 64QAM, but selects the easiest modulation system π of demodulation in them/4DQPSK.
(table 2)
| Ei[dB] | More than or equal to 44 | 45～44 | 43～41 | 40～38 | Be less than or equal to 37 |
| i＝x-2 | π/4DQPSK | 16QAM | 24QAM | 32QAM | 64QAM |
| i＝x-1 | π/4DQPSK | π/4DQPSK | π/4DQPSK | 16QAM | 24QAM |
| i＝x+1 | π/4DQPSK | π/4DQPSK | π/4DQPSK | 16QAM | 24QAM |
| i＝x+2 | π/4DQPSK | 16QAM | 24QAM | 32QAM | 64QAM |
Thus, control part 40 can change modulation system corresponding to the disturbing wave intensity data relevant with communication, thereby can improve the possibility that can continue to communicate by letter.
To determine under the situation of modulation system according to above-mentioned execution mode, can to change the antenna amount that uses with communicating by letter relevant signal in order receiving and dispatching, i.e. the quantity of RF portion 44.
That is, when by the change modulation system, and when making the many-valued degree of modulation system improve, owing to dying down with respect to noise or disturbing wave, so essence signal reach shortens.Therefore, if do not increase transmitted power, improve SINR, the zone will narrow down.In addition, improve the many-valued degree of modulation system more, just serious more at the noise effect of the disturbing wave of modulating.Therefore,,, then can increase the transmitted power of the signal relevant, can access the effect of signal transmitting and receiving diversity simultaneously with communication if increase antenna amount by changing antenna amount corresponding to modulation system.That is, utilize the signal transmitting and receiving diversity, can carry out signal transmitting and receiving more reliably.
Even under the situation that does not change modulation system, also can change the antenna amount that uses with communicating by letter relevant signal in order to receive and dispatch.No matter surpass under the situation of setting at the RSSI of disturbing wave, be any modulation system, all has the interference that is subjected to this disturbing wave and possibility that can not demodulation.Therefore, by the change antenna amount,, then can access the effect of signal transmitting and receiving diversity if increase antenna amount.That is, utilize the signal transmitting and receiving diversity, can carry out signal transmitting and receiving more reliably.
Following with reference to flow chart, above processing is described in more detail.Fig. 7 is the process chart of the base station apparatus 2 of present embodiment.In the figure, to be used to receive and dispatch RF portion 44 with the relevant signal of communicating by letter as the A of RF portion, and the RF portion 44 that will be used to receive the signal relevant with disturbing wave describes as the B of RF portion, but as mentioned above, receive simultaneously under the situation of 2 signals in 1 RF portion 44, A of RF portion and the B of RF portion can be arranged in the same RF portion 44 physically.
Under the A of RF portion is in situation in the communication, judge whether the B of RF portion is used (S100).As the B of RF portion, as mentioned above, can be arranged in the same RF portion 44 with the A of RF portion, can use does not have the acceptance division 46 that uses yet in other RF portions 44.Under these circumstances, owing to can use idle acceptance division 46 to measure disturbing wave, judge so whether this acceptance division 46 be used.
Do not have in the A of RF portion, to measure SINR (S110) under the idle situation at the B of RF portion, decide the modulation system (S112) of the A of RF portion corresponding to this SINR.The processing of this S110 and S112 is that link circuit self-adapting commonly known in the art is handled.
Under the situation of the B of RF portion free time, in the A of RF portion, measure SINR and RSSI (S102), in the B of RF portion, measure the RSSI (S104) of disturbing wave simultaneously.At this moment, by receiving the signal of adjacent channel/time adjacent channel, can measure disturbing wave.In addition, in order to receive these signals in 1 time slot, preferred use is the oscillating portion 41 and the switching part 42 of switching frequency at high speed.Then, according to RSSI that is measured and SINR, calculate D/U than (S106).In addition, in the calculating of D/U ratio, noise and the disturbing wave of measuring in order to calculate SINR can be used as the disturbing wave composition.
Then, control part 40 is according to the D/U ratio that calculates, and the modulation system (S108) of the decision RF A of portion in the next signal sending time slots, is used this modulation system, modulates.
Thus, can improve the possibility that continues communication.Promptly, under the situation that will change modulation system, detect disturbing wave in advance, decide modulation system according to the situation of this disturbing wave, can under the situation that has changed modulation system, the interference effect that is subjected to the unconspicuous disturbing wave of performance in the SINR of received signal be dropped to Min. thus.In addition, by changing antenna amount simultaneously, under the situation that has changed modulation system, can carry out signal transmitting and receiving more reliably.
Claims (10)
1. a radio communication device is characterized in that, comprises with the lower part:
Wireless communication unit, it uses at least one frequency channels to carry out radio communication;
Monitored object frequency channels accepting state obtains the unit, it will promptly communicate by letter at least one frequency channels the medium frequency channel as the monitored object frequency channels except the frequency channels that is used by above-mentioned wireless communication unit, obtain the monitored object frequency channels accepting state data of the accepting state of the signal that expression receives by this monitored object frequency channels; And
Modulation system change unit, it changes the modulation system of using when above-mentioned wireless communication unit sends wireless signal according to the accepting state by above-mentioned monitored object frequency channels accepting state data representation.
2. radio communication device according to claim 1 is characterized in that,
A plurality of antennas are equipped with,
Above-mentioned wireless communication unit uses at least one antenna in above-mentioned a plurality of antenna to carry out radio communication,
This radio communication device also comprises antenna amount change unit, the modulation system that it uses when sending wireless signal according to above-mentioned wireless communication unit, the antenna amount that change is used by above-mentioned wireless communication unit.
3. radio communication device according to claim 1 and 2 is characterized in that,
Comprise that also communication medium frequency channel reception status obtains the unit, it obtains the communication medium frequency channel reception status data of expression by the accepting state of the signal of above-mentioned communication medium frequency channel reception,
Above-mentioned modulation system change unit also according to the accepting state by above-mentioned communication medium frequency channel reception status data representation, changes the modulation system of using when above-mentioned wireless communication unit sends wireless signal.
4. radio communication device according to claim 3 is characterized in that,
Also comprise disturbing wave intensity data computing unit, it is according to by the accepting state of above-mentioned monitored object frequency channels accepting state data representation and accepting state by the above-mentioned medium frequency channel reception status data representation of communicating by letter, calculate the disturbing wave intensity data of expression at the disturbing wave intensity of above-mentioned communication medium frequency channel
Above-mentioned modulation system change unit according to above-mentioned disturbing wave intensity data, changes the modulation system of using when above-mentioned wireless communication unit sends wireless signal.
5. radio communication device according to claim 1 is characterized in that,
Comprise first wireless communication unit and second wireless communication unit, wherein above-mentioned first wireless communication unit uses at least one frequency channels to carry out radio communication,
Above-mentioned monitored object frequency channels accepting state obtains the unit, will except the frequency channels that uses by above-mentioned first wireless communication unit promptly at least one frequency channels the first communication medium frequency channel as the first monitored object frequency channels, above-mentioned second wireless communication unit receives the signal of the above-mentioned first monitored object frequency channels, obtains the first monitored object frequency channels accepting state data of expression by the accepting state of the signal of this first monitored object frequency channels reception thus.
6. radio communication device according to claim 5 is characterized in that,
Also comprise:
The carrier wave generation unit, it generates the carrier wave of assigned frequency; And
The carrier wave input unit, it will import above-mentioned first wireless communication unit and above-mentioned second wireless communication unit by the carrier wave that above-mentioned carrier wave generation unit generates,
Above-mentioned second wireless communication unit receives the signal of the above-mentioned first monitored object frequency channels according to the carrier wave by above-mentioned carrier wave input unit input.
7. according to right 6 described radio communication devices, it is characterized in that,
Above-mentioned monitored object frequency channels accepting state obtains the unit, will except a plurality of frequency channels above-mentioned first communication medium frequency channel and the above-mentioned first monitored object frequency channels as the second monitored object frequency channels,
Above-mentioned carrier wave generation unit in a plurality of frequencies of switching the above-mentioned second monitored object frequency channels, generates above-mentioned carrier wave.
8. radio communication device according to claim 7 is characterized in that,
The above-mentioned second monitored object frequency channels is the adjacent channel and time adjacent channel of the above-mentioned first communication medium frequency channel.
9. a radio communication device is characterized in that, comprises with the lower part:
A plurality of antennas;
Wireless communication unit, it uses at least one frequency channels and at least one antenna to carry out radio communication;
Monitored object frequency channels accepting state obtains the unit, it will promptly communicate by letter at least one frequency channels the medium frequency channel as the monitored object frequency channels except the frequency channels that is used by above-mentioned wireless communication unit, obtain the monitored object frequency channels accepting state data of the accepting state of the signal that expression receives by this monitored object frequency channels; And
Antenna amount change unit, it is according to the accepting state by above-mentioned monitored object frequency channels accepting state data representation, and change is by the antenna amount of above-mentioned wireless communication unit use.
10. a communication pattern variation is characterized in that, may further comprise the steps:
The radio communication step, it uses at least one frequency channels to carry out radio communication;
Monitored object frequency channels accepting state obtains step, it will promptly communicate by letter at least one frequency channels the medium frequency channel as the monitored object frequency channels except the frequency channels that uses in above-mentioned radio communication step, obtain the monitored object frequency channels accepting state data of the accepting state of the signal that expression receives by this monitored object frequency channels; And
Modulation system change step, it changes the modulation system of using when sending wireless signal in above-mentioned radio communication step according to the accepting state by above-mentioned monitored object frequency channels accepting state data representation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004222518A JP4583096B2 (en) | 2004-07-29 | 2004-07-29 | Wireless communication apparatus, communication mode changing method, and program |
| JP2004222518 | 2004-07-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1728625A CN1728625A (en) | 2006-02-01 |
| CN100512085C true CN100512085C (en) | 2009-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100871183A Expired - Fee Related CN100512085C (en) | 2004-07-29 | 2005-07-26 | Radio communication device and communication mode alter method |
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| JP (1) | JP4583096B2 (en) |
| CN (1) | CN100512085C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105282684A (en) * | 2014-07-09 | 2016-01-27 | 株式会社东芝 | Wireless communication device and wireless communication method |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101501625B1 (en) * | 2007-04-24 | 2015-03-12 | 가부시키가이샤 엔티티 도코모 | Mobile communication method, radio base station, mobile station, processor |
| JP4976914B2 (en) * | 2007-05-01 | 2012-07-18 | 株式会社エヌ・ティ・ティ・ドコモ | Base station apparatus and communication control method |
| JP6146716B2 (en) * | 2013-11-05 | 2017-06-14 | パナソニックＩｐマネジメント株式会社 | RADIO COMMUNICATION SYSTEM, RECEPTION DEVICE, TRANSMISSION DEVICE, AND TRANSMISSION RATE CONTROL METHOD |
| JP6372740B2 (en) * | 2014-05-09 | 2018-08-15 | パナソニックＩｐマネジメント株式会社 | Wireless communication device, transmission rate control method, and transmission rate control program |
| CN112702694A (en) | 2015-03-02 | 2021-04-23 | 洛卡解决方案有限责任公司 | System and method for monitoring transported items |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03761Y2 (en) * | 1985-02-28 | 1991-01-11 | ||
| JPS63177630A (en) * | 1987-01-19 | 1988-07-21 | Nippon Telegr & Teleph Corp <Ntt> | Interference detecting circuit |
| JP3581282B2 (en) * | 1999-09-17 | 2004-10-27 | 松下電器産業株式会社 | Base station apparatus and antenna control method |
| JP2002290246A (en) * | 2001-03-28 | 2002-10-04 | Hitachi Kokusai Electric Inc | Transmitter-receiver |
| JP3553047B2 (en) * | 2002-02-28 | 2004-08-11 | 株式会社エヌ・ティ・ティ・ドコモ | SIR measurement device, SIR measurement method, SIR measurement program, and computer-readable recording medium recording SIR measurement program |
| JP3732830B2 (en) * | 2002-10-10 | 2006-01-11 | 松下電器産業株式会社 | Multicarrier transmission apparatus and multicarrier transmission method |
| JP2004153466A (en) * | 2002-10-29 | 2004-05-27 | Matsushita Electric Ind Co Ltd | Receiving method, receiving system, and wireless transmission system |
| JP3877708B2 (en) * | 2003-05-23 | 2007-02-07 | 三洋電機株式会社 | Base station apparatus, terminal apparatus, communication system |
-
2004
- 2004-07-29 JP JP2004222518A patent/JP4583096B2/en not_active Expired - Fee Related
-
2005
- 2005-07-26 CN CNB2005100871183A patent/CN100512085C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105282684A (en) * | 2014-07-09 | 2016-01-27 | 株式会社东芝 | Wireless communication device and wireless communication method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1728625A (en) | 2006-02-01 |
| JP4583096B2 (en) | 2010-11-17 |
| JP2006042203A (en) | 2006-02-09 |
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