JP2003032147A - Wireless communication method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless communication method and device that conducts proper processing such as processing of suppressing or avoiding data collision depending on the priority determined in advance on transmission data in the case of transceiving data by a frequency or time hopping communication system. SOLUTION: The wireless communication method and device conducts data transmission attended with the frequency or time hopping under a condition that data collisions for a prescribed number of times for transmission data in each hopping period are permitted, detects reception status information data depicting information with respect to a data reception status from a receiver side and conducts control in response to the information carried by the detected reception status information data and a predetermined priority as to the transmission data in a data transmission mode within a hopping period after the detection as the reception status information data when the reception status information data are detected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention described in the claims of the present application is directed to a plurality of times each set by a unit time section and a unit frequency section, which are set by a pattern determined in each cycle. Frequency hopping data transmission for transmitting data using frequency slots,
Alternatively, a wireless communication method for performing time-hopping data transmission in which data is transmitted using a plurality of time slots, each set by a predetermined pattern within each cycle, and specified by a unit time segment, and its implementation. Wireless communication device.

[0002]

2. Description of the Related Art In the field of wireless communication for transmitting and receiving various data, frequency hopping or a frequency hopping is one of the measures for enabling multiplex communication within a predetermined frequency band allocated for communication. A communication method (frequency hopping communication method or time hopping communication method) for transmitting and receiving data with time hopping has been proposed.

In the frequency hopping communication system, a hopping cycle composed of a plurality of unit time sections and a use frequency band composed of a plurality of unit frequency sections are defined, and each hopping cycle has a unit time section and a unit. The selected plurality of time-frequency slots specified by the frequency division are set with a predetermined pattern (hopping pattern), and the plurality of time-frequency slots (hopping sequence) set with the hopping pattern are set. ) Is used to intermittently transmit data. Then, on the receiving side, the data transmitted for each of a plurality of time-frequency slots is sequentially received.

FIGS. 6A and 6B show examples of hopping sequences under the frequency hopping communication system. A of FIG.
In each of B and B, t represents time, and f represents frequency (the same applies to other figures below). In FIG. 6A, a hopping sequence FPA ₀ formed by a time-frequency slot attached with “0” and a hopping sequence FPA formed by a time-frequency slot attached with “1” in the hopping sequence group Fa. Two hopping sequences, _one and _one , are shown. Further, in FIG. 6B, a hopping sequence FPB ₀ formed by a time-frequency slot with “0” in the hopping sequence group Fb,
Two hopping sequences are shown, with the hopping sequence FPB ₁ formed by the time-frequency slots labeled "1".

On the other hand, in the time hopping communication system, a hopping cycle in which a plurality of frames each including a plurality of unit time sections are included is defined, and for each hopping cycle, a selected unit time section in each frame is determined. A plurality of time slots specified by is set with a predetermined pattern (hopping pattern), and a plurality of time slots (hopping sequence) set with such a hopping pattern are used to intermittently transmit data. Be seen. At that time, the used frequency band is fixed. Then, on the receiving side, the data transmitted for each of the plurality of time slots are sequentially received.

FIG. 7A shows an example of the relationship between the hopping cycle, the frame and the unit time segment (time slot) under the time hopping communication system. In this example,
Each frame consists of a total of 13 time slots from 0 to 12, and the hopping cycle includes 13 frames. Then, the time slot selected in each frame is used for data transmission.

FIG. 7B shows a hopping sequence group Ta as an example of a hopping sequence under the time hopping communication system.
₁ shows one hopping sequence TPA ₀ and one hopping sequence TPB ₁ in the hopping sequence group Tb.

In this way, when data transmission / reception is performed by the frequency hopping communication system or the time hopping communication system in which the predetermined hopping cycle is set, the multiple communication state is set within the common frequency band used, and the data is transmitted. A collision may occur. Data collision is a time-frequency slot or time used for data transmission between data transmission / reception performed with a hopping sequence in a hopping sequence group and data transmission / reception performed with a hopping sequence in another hopping sequence group. It means that slots (data transmission slots) overlap.

FIG. 6C shows a hopping sequence FPA ₀ in the hopping sequence group Fa shown in FIG. 6A under the data transmission / reception by the frequency hopping communication system,
An example of data collision that occurs between the hopping sequences FPB ₀ and FPB ₁ in the hopping sequence group Fb shown in B of FIG. 6 is shown. In this example, each of the hopping sequences FPB ₀ and FPB ₁ has one data collision with the hopping sequence FPA ₀ in each hopping cycle.

Further, in FIG. 7B, data is exchanged between the hopping sequence TPA ₀ in the hopping sequence group Ta and the hopping sequence TPB ₁ in the hopping sequence group Tb under the data transmission / reception by the time hopping communication system. The situation in which a collision occurs is shown.

In both the data transmission / reception by the frequency hopping communication method and the data transmission / reception by the time hopping communication method, a plurality of hopping sequences belonging to one hopping sequence group are set so that data collision does not occur between them. It

[0012]

When the data collision as described above occurs, the transmitted data is partially not properly received by the receiving side. Therefore, the transmitting side can avoid the data collision. Are required to be taken.

In this connection, for example, Japanese Unexamined Patent Publication:
Japanese Patent Laid-Open No. 6-343066 discloses that in performing spread spectrum wireless communication by a frequency hopping communication system,
When a collision occurs as a result of signal transmission, the signal transmission frequency-time slot in which the collision occurs is moved to a unit frequency section within the hopping period or another frequency-time slot having a different unit time section. , Or
A collision is avoided by changing a signal transmission frequency-time slot that has caused a collision into a frequency-time slot that is not used for signal transmission, and not performing signal transmission in the frequency-time slot. Is described.

However, such a published patent publication:
In the conventional measure proposed in Japanese Patent Laid-Open No. 6-343066, when a collision occurs, the collision occurs regardless of the characteristics, importance, priority, etc. of the signal being transmitted at that time. A process of migrating the signal transmission frequency-time slot to another frequency-time slot within the hopping cycle, or a process of not performing signal transmission in the signal transmission frequency-time slot in which the collision has occurred. Therefore, in avoiding the collision, it cannot be said that appropriate processing is performed according to the characteristics, importance, priority, etc. of the signal being transmitted. Therefore,
In the conventional measures, there is room for improvement in that there is no guarantee that appropriate processing will be performed according to the characteristics, importance, priority, etc. of the signal being transmitted.

In view of the above point, the invention described in the claims of the present application requires that when data is transmitted and received by the frequency hopping communication method or the time hopping communication method in which a predetermined hopping cycle is set, In the state where the data collision of the transmission data is permitted a predetermined number of times, the transmission data is transmitted on the receiving side according to the data reception situation such as the situation where the data collision occurs or the situation where the data collision is predicted. A wireless communication method and a wireless communication provided for the execution thereof, in which appropriate processing such as processing for suppressing or avoiding data collision can be performed under consideration of a predetermined priority. Provide a device.

[0016]

The wireless communication method according to the invention described in any one of claims 1 to 9 in the claims of the present application is a frequency hopping or a time hopping with a predetermined hopping cycle. The data transmission accompanied by is performed while allowing a predetermined number of data collisions of the transmission data within each hopping cycle, and the detection of the reception status information data that conveys the information regarding the data reception status from the receiving side is performed. When the reception status information data is detected, the information transmitted by the detected reception status information data regarding the data transmission mode within the hopping cycle after the detection of the reception status information data and the predetermined priority for the transmission data are It is assumed that the control according to is performed.

In particular, in the wireless communication method according to the invention described in claim 2, the information transmitted by the detected reception status information data indicates that the occurrence of data collision or the prediction of data collision has been brought about. When it is information that represents, control for changing the error correction coding mode for transmission data according to a predetermined priority for transmission data, data transmission slot within the hopping cycle after detection of reception status information data The transmission slot timing control for changing the timing or the transmission slot number control for reducing the number of data transmission slots in the hopping period after detection of the reception status information data is performed.

Further, in the radio communication method according to the invention described in claim 3, the transmission slot timing control or the transmission slot number control is performed in the same manner as the radio communication method according to the invention described in claim 2. The transmission slot timing control is performed by shifting the data transmission slot that caused the occurrence of data collision or the prediction of data collision to another slot within the hopping cycle. The slot number control is executed by changing a data transmission slot which has caused a data collision occurrence or a data collision prediction by data transmission to a slot which is not used for data transmission.

The radio communication apparatus according to the invention described in any one of claims 10 to 17 in the claims of the present application is a data transmission with frequency hopping or time hopping with a predetermined hopping cycle. In each hopping period, while permitting a predetermined number of data collisions with respect to the transmission data, a receiving means for receiving the data transmitted from the receiving side, and a receiving side received by the receiving means. Of the reception status information data that conveys information regarding the data reception status in the data transmitted from the data detection means, and the reception status information data when the reception status information data is detected by the data detection means. Hopping period in data transmission by the data transmission means performed after detection of Of the data transmission mode, and it includes a data transmission control means for performing control in accordance with the predetermined priority for the transmission data and the detected reception status information data convey information.

Particularly, in the wireless communication apparatus according to the invention described in claim 11, the information transmitted by the reception status information data detected by the data detection means by the data transmission control means is data collision or data collision. When the information indicates that the prediction of the collision has been brought about, the data transmitted by the data transmitting unit after the reception status information data is detected according to the predetermined priority of the transmission data transmitted by the data transmitting unit. With regard to transmission, control for changing the mode of error correction coding for transmission data,
Transmission slot timing control for changing the timing of data transmission slots within the hopping cycle or transmission slot number control for reducing the number of data transmission slots within the hopping cycle is performed.

Further, in the wireless communication device according to the invention described in claim 12, the data transmission control means has the same transmission slot as in the case of the wireless communication device according to the invention described in claim 11. Timing control or transmission slot number control is performed, and at that time, transmission slot timing control shifts the data transmission slot that has caused the occurrence or prediction of data collision due to data transmission to another slot within the hopping cycle. Also, the transmission slot number control is performed by changing the data transmission slot that caused the occurrence of data collision or the prediction of data collision due to data transmission to the slot not used for data transmission. .

The wireless communication method according to the invention described in any one of claims 1 to 9 in the claims of the present application as described above, or any one of claims 10 to 17 In the wireless communication device according to the described invention, data transmission accompanied by frequency hopping or time hopping with a predetermined hopping period allows a predetermined number of data collisions of transmission data within each hopping period. Done in. The number of allowed data collisions is determined in relation to the error correction coding scheme that adds redundancy to the transmitted data.

Then, as a result of the data transmission, the reception status information data is transmitted from the reception side, and when the reception status information data is received and detected, the reception status information data is detected within the hopping cycle after the detection. Control is performed according to the information transmitted by the detected reception status information data and the predetermined priority of the transmission data regarding the mode of data transmission. Specifically, when the information transmitted by the detected reception status information data is, for example, information indicating that the occurrence of a data collision or the prediction of a data collision has been brought about, a predetermined priority for transmission data is set. According to, control for changing the mode of error correction coding for transmission data, transmission slot timing control for changing the timing of the data transmission slot within the hopping period after detection of the reception status information data, or
Transmission slot number control is performed to reduce the number of data transmission slots within the hopping period after detection of the reception status information data. Then, more specifically, the transmission slot timing control is performed, for example, by shifting a data transmission slot that has caused a data collision occurrence or a data collision prediction due to data transmission to another slot within the hopping cycle. Also, the transmission slot number control changes the data transmission slot that caused the occurrence of data collision or the prediction of data collision due to data transmission to a slot not used for data transmission, and does not perform data transmission in the slot. It is done by

Thereby, the wireless communication method according to the invention described in any one of claims 1 to 9 in the scope of claims of the present application or any one of claims 10 to 17 According to the wireless communication device of the present invention described above, data transmission is performed, and as a result, the reception status information data transmitted from the reception side represents, for example, a situation where a data collision occurs, a data collision occurs at the reception side. Depending on the data reception status such as the predicted status, for example, depending on the priority of the transmission data, such as processing for suppressing or avoiding data collision under consideration of the predetermined priority of the transmission data. Appropriate processing is performed.

The number of transmission slots is controlled according to the data reception status on the receiving side, and the data transmission slot which causes the occurrence of data collision or the prediction of data collision by data transmission is not used for data transmission. Alternatively, if data transmission is not performed in the slot, some of the plurality of slots forming the hopping sequence in the hopping cycle will not be used for data transmission. Thus, rather than using all of the plurality of slots forming the hopping sequence in the hopping period for data transmission, not using some of them for data transmission is itself a document: Wang, CC, Pottie, GJ, ”Interference
Avoidance and Power Control Strategies for Coded
Frequency Hopped Cellular Systems ”, IEEE ICC '9
5, pp1737-1741 vol.3. This document states that the performance of the entire transmission / reception system can be improved by not using a part of a plurality of slots forming a hopping sequence within a hopping cycle for data transmission.

Further, the wireless communication method according to the invention described in any one of claims 1 to 9 in the claims of the present application, or claims 10 to 1
The wireless communication device according to the invention described in any one of 7 to 7 is also applied when data is transmitted and received by the ultra wide band transmission method.

[0027]

1 is a block diagram of a wireless communication method according to an embodiment of the present invention, in which an example of a wireless communication method according to the present invention is implemented. An example of a wireless communication device according to the invention described in any one of claims 10 to 17 in the range is shown.

In the example shown in FIG. 1, a transmission data transmission section 11 for transmitting transmission data DIT which is data to be transmitted is provided. The transmission data DIT transmitted from the transmission data transmission unit 11 is supplied to the error correction coding unit 12.

In the error correction coding unit 12, the transmission data DIT is subjected to error correction coding processing according to the control signal CECT from the error correction coding control unit 13,
Thereby, the data DCIT is obtained. Error correction coding unit 1
The data DCIT obtained in 2 is supplied to the interleaving unit 14 and subjected to a predetermined interleaving process in the interleaving unit 14 to obtain the data DL.
IT is supplied to the data burst synthesizing unit 15.

In the data burst synthesizing unit 15, based on the data DLIT subjected to the interleave processing,
Burst data DBIT for each time-frequency slot for data transmission by the frequency hopping communication system or each time slot for data transmission by the time hopping communication system is synthesized. At this time, the burst data DBIT are sequentially combined under the preset hopping cycle, and the timing within each hopping cycle is controlled by the control signal CTST from the timing controller 16.
Is set according to.

The consecutive burst data DBIT obtained from the data burst synthesizer 15 is supplied to the modulator 17. In the modulator 17, the burst data DBI
By using T as modulation information, a carrier signal selected in advance is subjected to modulation processing according to a preset modulation method to form carrier data DMTT that are successively connected, and these are supplied to the frequency conversion unit 18.

The frequency conversion section 18 performs frequency conversion processing on each of the consecutive carrier wave data DMTT from the modulation section 17 in accordance with the control signal CFRT from the frequency control section 19 to form transmission data DFTT, It is supplied to the transmitter 20. The transmission unit 20 transmits the transmission data DFTT from the frequency conversion unit 18 through the transmission / reception demultiplexing unit 21 and the transmission / reception antenna 22.

Under such a condition, when data is transmitted by the frequency hopping communication system, the control signal CFRT from the frequency control unit 19 for each of the consecutive carrier data DMTT in the frequency conversion unit 18 is transmitted.
The frequency conversion processing in accordance with the above is performed in a manner corresponding to a predetermined hopping sequence within a preset use frequency band. Thereby, the transmission data DF
The TT will be transmitted within each hopping period using a plurality of time-frequency slots forming a defined hopping sequence. In the following, the time-frequency slot used for transmitting the transmission data DFTT is referred to as data transmission time-frequency slot.

On the other hand, when data is transmitted by the time hopping communication system, the timing control unit 16 synthesizes the burst data DBIT based on the interleaved data DLIT in the data burst synthesis unit 15. Under each timing of hopping, the timing is controlled by the control signal CTST at a timing corresponding to a predetermined hopping sequence. Further, the frequency conversion processing in the frequency conversion unit 18 according to the control signal CFRT from the frequency control unit 19 for each of the consecutive carrier wave data DMTT makes the transmission data DFTT have a constant frequency. To be done. Thereby, the transmission data DF
The TT will be transmitted within each hopping period using a plurality of time slots forming a defined hopping sequence. Hereinafter, the time slot used for transmitting the transmission data DFTT is referred to as a data transmission time slot.

Further, the example shown in FIG. 1 is provided with a receiving section 25 for receiving the sending data DFRT from the receiving side through the transmitting / receiving antenna 22 and the transmitting / receiving branching section 21. The transmission data DFRT received from the reception side by the reception unit 25 is supplied to the frequency conversion unit 26.

In the frequency converter 26, the receiver 25
Frequency control unit 2 for the transmission data DFRT from
Frequency conversion processing is performed according to the control signal CFRR from 7 to obtain carrier wave data DMRT that are successively connected in each hopping cycle, and the carrier wave data DMRT are supplied to the demodulation unit 28. The demodulation unit 28 performs demodulation processing according to a preset demodulation method on each of the carrier wave data DMRT successively connected in each hopping cycle, obtains sequentially burst data DBJT, and extracts them as a data burst. It is supplied to the part 29.

In the data burst extraction unit 29, the burst data DBJT from the demodulation unit 28 is subjected to a data burst extraction process according to the control signal CTSR from the timing control unit 30 to form a series of data DDJT. . The data DDJT obtained in the data burst extraction unit 29 is supplied to the deinterleave unit 31 and is subjected to a predetermined deinterleave processing in the deinterleave unit 31 to be data DCJT, which is then supplied to the error correction decoding unit 32. Supplied.

In the error correction decoding unit 32, the data DCJT is subjected to error correction decoding processing to obtain reproduced data DJT. The reproduction data DJT obtained in the error correction decoding unit 32 is derived through the reproduction data deriving unit 33.

Further, the example shown in FIG. 1 is provided with an operation control section 40 constructed by using, for example, a microcomputer. Due to its function, the operation control unit 40 is substantially the same as the hopping sequence determination unit 41,
Error correction mode determination unit 42, data transmission slot determination unit 4
3, transmission number determination unit 44 within the hopping period, collision information /
Collision prediction information detector 45 and transmission condition control information detector 4
Built-in 6.

Then, the operation control section 40 is supplied with a data transmission command CTR requesting execution of a data transmission operation from the outside and reproduction data DJT obtained in the error correction decoding section 32.

The operation control section 40 uses the data transmission command C.
When the TR is supplied, the transmission data DIT sent from the transmission data sending unit 11 at that time enters an operating state for data transmission by the frequency hopping communication system or data transmission by the time hopping communication system.

For example, the operation control unit 40 determines that the transmission data D
In the operation control section 40, when the operation state for data transmission by the frequency hopping communication method for IT is taken, the hopping sequence determination section 41 causes the frequency hopping communication in response to the supplied data transmission command CTR. A hopping sequence in each hopping cycle for data transmission according to the method is determined. Thereby, the installation state of the plurality of time-frequency slots forming the hopping sequence in each hopping cycle is determined. Then, the error correction mode determination unit 42, the data transmission slot determination unit 43, and the number of transmissions within the hopping period determination unit 44 determine the transmission data D
A mode of error correction coding for transmission data DIT according to the characteristics of IT, a data transmission slot (plurality) which is a time-frequency slot used for transmission in each hopping cycle, and a hopping cycle. Number of transmissions to be made (time-number of frequency slots or less forming hopping sequence in each hopping cycle)
, Respectively. At this time, the mode of error correction coding for the transmission data DIT, the plurality of data transmission slots within each hopping period, and The number of transmissions to be made within the hopping period is determined.

Then, the error correction mode determination unit 42 forms the error correction control signal OEC corresponding to the determined error correction coding mode, and the hopping sequence determination unit 41 determines the frequency corresponding to the determined hopping sequence. Control signal OHP
And the data transmission slot determination unit 43 further
The timing control signal OTS corresponding to the data transmission slot in each determined hopping cycle is formed.

In this way, in the operation control section 40, the transmission data D sent from the transmission data sending section 11 is sent.
When the error correction control signal OEC, the frequency control signal OHP, and the timing control signal OTS for the IT are formed, the operation control unit 40 sends the error correction control signal OEC to the error correction coding control unit 13 and the frequency control signal. The OHP is sent to the frequency control units 19 and 27, and the timing control signal OTS
Are supplied to the timing control units 16 and 30, respectively. Further, the operation control unit 40 includes the error correction information data DEC representing the error correction coding mode determined by the error correction mode determination unit 42, and the data transmission slot determination unit 43.
Data transmission slot information data D representing the data transmission slot in each hopping cycle determined by
The SP is supplied to the data burst synthesis unit 15.

As a result, the error coding control unit 13 supplies the control signal CECT corresponding to the error correction control signal OEC to the error correction coding unit 12, and the timing control unit 16
The control signal CTST according to the timing control signal OTS is supplied to the data burst synthesizing unit 15, and the frequency control unit 19
Supplies the control signal CFRT corresponding to the frequency control signal OHP to the frequency conversion unit 18, the frequency control unit 27 supplies the control signal CFRR corresponding to the frequency control signal OHP to the frequency conversion unit 26, and the timing control unit 30. Supplies the control signal CTSR according to the timing control signal OTS to the data burst extraction unit 29, and also sequentially supplies the burst data DB obtained from the data burst synthesis unit 15.
IT is assumed to include error correction information data DEC and data transmission slot information data DSP. Then, the transmission data DFTT from the transmission unit 20 is transmitted through the transmission / reception demultiplexing unit 21 and the transmission / reception antenna 22 while using the data transmission time-frequency slot set in the frequency conversion unit 18, and the transmission / reception antenna 22. Then, the state in which the transmission data DFRT from the reception side through the transmission / reception demultiplexing unit 21 is received by the reception unit 25 is set.

As a result, regarding the transmission data DIT,
Data transmission accompanied by frequency hopping with a predetermined hopping period is performed while allowing a predetermined number of data collisions within each hopping period, and the sending data DFRT from the receiving side is received to reproduce the reproduction data DJT. The condition obtained is taken.

Under the above circumstances, in the operation control section 40, the collision information / collision prediction information detection section 45 and the transmission condition control information detection section 46 supply from the error correction decoding section 32 to the operation control section 40. The reception status information data, which is included in the reproduced data DJT to be reproduced and represents the information regarding the data reception status on the reception side, is detected. Then, when the reception status information data is detected, regarding the data transmission mode within the hopping cycle after the detection of the reception status information data by the data transmission slot determination unit 43 and the number of transmissions within the hopping cycle determination unit 44,
Control is performed according to the information represented by the detected reception status information data and the predetermined priority of the transmission data DIT.

At this time, the reception status information data is used, for example, on the receiving side, in addition to receiving the sending data DFTT from the sending unit 20 that is sent within each hopping cycle, sending the sending data DFTT. Reception is also performed for the slots that have not been processed, and based on the result, the reception side sends out. Then, when the information represented by the detected reception status information data is the information indicating that the occurrence of the data collision or the prediction of the data collision is brought, the information is detected by the collision information / collision prediction information detecting unit 45. When the information that is detected and that the detected reception status information data represents is information that indicates the presence of a time-frequency slot that is not used for data transmission, such information is the transmission condition control information detection unit 46.
Detected by.

When the collision information / collision prediction information detection unit 45 detects the information indicating that the occurrence of data collision or the prediction of data collision has been detected, the error correction mode determination unit 42 and the data transmission slot determination unit. 43 and the number-of-times-of-transmission determination section 44 in the hopping period, the transmission data D
A state in which the data transmission mode within the hopping cycle is not changed in accordance with a predetermined priority for IT,
A state in which the error correction mode determination unit 42 performs control to change the mode of error correction coding for transmission data in data transmission within the hopping cycle, and the data transmission slot determination unit 43 causes the transmission data DIT to have a predetermined priority. Depending on the frequency, the data transmission time in the hopping cycle after detection of the above reception status information data-a state in which transmission slot timing control is performed to change the timing of the frequency slot, or the number of times of transmission within the hopping cycle determination unit 44 transmits In accordance with a predetermined priority for the data DIT, a state of performing control of the number of transmission slots to reduce the number of data transmission time-frequency slots in the hopping cycle is set.

In such a case, for example, when the predetermined priority of the transmission data DIT is the highest, the error correction mode determination unit 42, the data transmission slot determination unit 43, and the number of transmissions within the hopping period determination unit 44 determine the hopping period. Of the transmission data DIT within the hopping cycle, or the error correction mode determination unit 42 changes the mode of error correction coding for the transmission data DIT in the data transmission within the hopping cycle. It is placed in a situation where it controls to increase the redundancy.

When the predetermined priority of the transmission data DIT is relatively high, the data transmission slot determining unit 43 attempts transmission slot timing control. When performing the transmission slot timing control, the data transmission slot determination unit 43 causes the transmission slot timing control, for example, to cause the occurrence of data collision or the prediction of data collision by transmitting the transmission data DFTT. The data transmission time-frequency slot is changed to another slot within the hopping cycle.

Furthermore, when the predetermined priority of the transmission data DIT is relatively low, the in-hopping-cycle transmission count determination unit 44 attempts to control the number of transmission slots. Then, when performing the transmission slot number control, the intra-hopping period transmission number determination unit 44 performs such transmission slot number control by, for example, data that causes data collision or data collision prediction by data transmission. This is done by changing the transmission slot to a slot not used for data transmission. When it is necessary to increase the redundancy of the transmission data DIT in performing the transmission slot number control and reducing the number of data transmission time-frequency slots in the hopping cycle, the error correction mode determination unit 42 The error correction coding mode of the transmission data DIT is changed to perform the operation for increasing the redundancy of the transmission data DIT.

On the other hand, when the transmission condition control information detecting unit 46 detects the information indicating the existence of the time-frequency slot which is not used for data transmission, the data transmission slot determining unit 43 predetermines the transmission data DIT. Depending on the priority, the state of considering the execution of the transmission slot timing control for changing the data transmission time-frequency slot timing within the hopping cycle or the transmission slot number control for increasing the data transmission time-frequency slot is taken. . Then, the data transmission slot determining unit 43, when performing the transmission slot timing control, performs such control by selecting the selected data transmission time-frequency slot in the hopping cycle,
This is done by shifting to a time-frequency slot that is not used for data transmission, which is informed by the reception status information data.

Under the circumstances as described above, the predetermined priority of the transmission data DIT detected by the data transmission slot determining unit 43 and the transmission number within hopping period determining unit 44 is, for example, as shown in FIG. It is determined according to the data priority table shown. Figure 2
In the data priority table shown in, the telephone voice data has the highest priority (priority 1), and hereinafter, the real-time transfer protocol (RTP) data (priority 2),
File transfer protocol (FTP) data (priority level 3), hypertext transfer protocol (HTTP) data (priority level 4), electronic mail data (priority level 5),
The priority goes down. Therefore, the transmission data DIT
, The transmission data DIT is determined according to the data priority table shown in FIG.
Telephone voice data, RTP data, FTP data, HTT
It is determined which of the P data and the electronic mail data it belongs to, and the priority is determined.

As described above, the transmission slot timing control by the data transmission slot determination unit 43 or the transmission slot number control by the number of transmissions within the hopping period determination unit 44 is performed according to the predetermined priority for the transmission data DIT. Then, the data transmission slot determination unit 4
3 is a new timing control signal O corresponding to the changed plurality of data transmission slots within the hopping period.
Form TS. Then, the operation control unit 40 supplies the new timing control signal OTS formed by the data transmission slot determination unit 43 to the timing control unit 16 and the timing control unit 30. Furthermore, the operation control unit 40
Is an error correction information data DEC that represents an error correction coding mode for the transmission data DIT that has been changed by the error correction mode determination section 42 or that has been maintained without being changed, and a data transmission slot determination section. The data transmission slot information data DSP representing the data transmission slot in each hopping cycle newly determined by 43 is supplied to the data burst synthesizing unit 15.

As a result, the timing control unit 16 causes the control signal CTS corresponding to the new timing control signal OTS.
T is supplied to the data burst synthesizing unit 15, and the timing control unit 30 supplies the control signal CTSR corresponding to the new timing control signal OTS to the data burst deriving unit 29 and is obtained from the data burst synthesizing unit 15. The burst data DBIT that is successively connected includes new error correction information data DEC and data transmission slot information data DSP. Then, assuming that the transmission data DFTT from the transmission unit 20 uses the data transmission time-frequency slot newly set in the frequency conversion unit 18, the transmission / reception demultiplexing unit 21 and the transmission / reception antenna 22.
Data DF transmitted from the receiving side through the transmission / reception antenna 22 and the transmission / reception demultiplexing unit 21
The RT is received by the receiving unit 25.

By carrying out such an operation, the state in which the data collision of the sending data DFTT transmitted from the transmitting unit 20 is suppressed or the state is avoided.

FIG. 3 is a flow chart showing an example of the control operation performed by the operation control section 40 configured as described above. In the control operation represented by the flowchart shown in FIG. 3, step 5 is performed after the start.
At 0, it is determined whether or not there is a request for data transmission according to the supply state of the data transmission command CTR. As a result, when there is no request for data transmission, the determination in step 50 is repeated, and when there is a request for data transmission, in step 51, the hopping sequence determination unit 41 determines the hopping sequence. .

Next, at step 52, the error-correction mode determination unit 42 determines the error-correction coding mode for the transmission data DIT, and the data transmission slot determination unit 43 uses the time-frequency slots used for transmission within each hopping cycle. Data transmission slot (plural)
And the number of transmissions in the hopping cycle determination unit 44 determines the number of transmissions to be performed in each hopping cycle, and the process proceeds to step 53.

In step 53, the error correction control signal OEC is sent to the error coding control unit 13 and the frequency control signal OEC is sent.
The HP is sent to the frequency control units 19 and 27, the timing control signal OTS is sent to the timing control units 16 and 30, and the error correction information data DEC and the data transmission slot information data DSP are sent to the data burst synthesizing unit 15.
And the transmission data DFTT from the transmission unit 20 is
Data transmission time set in the frequency converter 18 −
A state in which the frequency slot is used, the data is transmitted through the transmission / reception demultiplexing unit 21 and the transmission / reception antenna 22, and the transmission data DFRT from the reception side through the transmission / reception antenna 22 and the transmission / reception demultiplexing unit 21 is received by the reception unit 25. To be taken.

Next, at step 54, whether the collision information / collision prediction information detection unit 45 has detected the information represented by the reception status information data and indicating that the occurrence of the data collision or the prediction of the data collision has occurred. Determine whether or not. As a result, when the information indicating the occurrence of the data collision or the prediction of the data collision is detected, in step 55, the data transmission slot determination unit 43 and the transmission count determination unit 44 in the hopping period are determined.
However, in accordance with a predetermined priority for the transmission data DIT, a state in which the data transmission mode in the hopping cycle is not changed, the data transmission slot determination unit 43, in accordance with the predetermined priority for the transmission data DIT, Data transmission time in the hopping cycle after detection of the reception status information data-a state in which transmission slot timing control is performed to change the timing of the frequency slot, or the number of times of transmission in the hopping cycle determination unit 44 is predetermined for the transmission data DIT. In accordance with the priority, a state of controlling the number of transmission slots to reduce the number of data transmission time-frequency slots in the hopping cycle is set, and then the process proceeds to step 56.

On the other hand, as a result of the judgment in step 54, when the information indicating that the occurrence of the data collision or the prediction of the data collision is brought is not detected, the step 54
Directly proceeds to step 56.

In step 56, the transmission condition control information detecting section 46 represents the reception status information data,
It is determined whether information indicating the presence of a time-frequency slot not used for data transmission is detected. As a result, when the information indicating the existence of the time-frequency slot not used for data transmission is detected, in step 57, the data transmission slot determination unit 43.
However, according to a predetermined priority of the transmission data DIT, the execution of the transmission slot timing control for changing the data transmission time-frequency slot timing within the hopping cycle is examined, and when the transmission slot timing control is executed, , Taking a state of performing such control by shifting the selected data transmission time-frequency slot in the hopping cycle to a time-frequency slot which is not used for data transmission indicated by the reception status information data, Then, it progresses to step 58.

Further, as a result of the judgment in step 56, when the information indicating the existence of the time-frequency slot not used for data transmission is not detected, step 56
Directly proceeds to step 58.

In step 58, it is judged whether or not the transmission of the transmission data DIT from the transmission data transmission unit 11 is completed, and the transmission data DI from the transmission data transmission unit 11 is judged.
If the transmission of T has not been completed, the process returns to step 53 to repeat the steps starting from step 53, and if the transmission of the transmission data DIT from the transmission data transmission unit 11 has been completed, control is performed. finish.

FIG. 4 is a flowchart showing another example of the control operation performed by the operation control section 40. In the control operation represented by the flowchart shown in FIG. 4, after the start, in step 60, it is determined whether or not there is a request for data transmission according to the supply state of the data transmission command CTR. As a result, if there is no request for data transmission, the determination in step 60 is repeated, and if there is a request for data transmission, in step 61, the hopping sequence determination unit 41 determines the hopping sequence. .

Next, at step 62, the error-correction mode determination unit 42 determines the error-correction coding mode for the transmission data DIT, and the data transmission slot determination unit 43 uses the time-frequency slots used for transmission within each hopping cycle. Data transmission slot (plural)
And the number of transmissions in the hopping period determination unit 44 determines the number of transmissions to be performed in each hopping period, and the process proceeds to step 63.

In step 63, the error correction control signal OEC is sent to the error coding control unit 13 and the frequency control signal OEC is sent.
The HP is sent to the frequency control units 19 and 27, the timing control signal OTS is sent to the timing control units 16 and 30, and the error correction information data DEC and the data transmission slot information data DSP are sent to the data burst synthesizing unit 15.
And the transmission data DFTT from the transmission unit 20 is
Data transmission time set in the frequency converter 18 −
A state in which the frequency slot is used, the data is transmitted through the transmission / reception demultiplexing unit 21 and the transmission / reception antenna 22, and the transmission data DFRT from the reception side through the transmission / reception antenna 22 and the transmission / reception demultiplexing unit 21 is received by the reception unit 25. To be taken.

Subsequently, in step 64, the collision information / collision prediction information detection unit 45 detects information represented by the reception status information data, which indicates that the occurrence of data collision or the prediction of data collision has been brought about, It is determined whether it is required to reduce the number of data transmissions in the hopping cycle. As a result, when it is required to reduce the number of data transmissions in the hopping cycle, in step 65, the transmission data D
Determine if it is necessary to change the redundancy for IT.

If it is determined in step 65 that the redundancy of the transmission data DIT needs to be changed, it is determined in step 66 whether the redundancy of the transmission data DIT can be increased. To do. As a result, if it is possible to increase the redundancy of the transmission data DIT, in step 67,
The redundancy for the transmission data DIT is increased, and the process proceeds to step 68. In addition, as a result of the judgment in step 65,
If it is not necessary to change the redundancy of the transmission data DIT, the process directly proceeds from step 65 to step 68. Then, in step 68, the number of data transmissions in the hopping cycle is reduced, and then in step 69.
Proceed to.

On the other hand, as a result of the judgment in step 64, when it is not required to reduce the number of data transmissions in the hopping cycle, the process directly proceeds from step 64 to step 69, and the judgment in step 66 is made. As a result, even when it is not possible to increase the redundancy of the transmission data DIT, the process directly proceeds from step 66 to step 69.

In step 69, the transmission condition control information detecting section 46 represents the reception status information data,
Information indicating the presence of time-frequency slots that are not used for data transmission is detected to determine whether it is possible to increase the number of data transmissions within the hopping period. As a result, when it is possible to increase the number of data transmissions within the hopping cycle, it is determined in step 70 whether or not there is a margin in the number of data transmissions within the hopping cycle.

As a result of the judgment in step 70, when there is a margin in the number of data transmissions within the hopping cycle,
In step 71, it is determined whether or not the transmission rate is improved by increasing the number of times of data transmission within the hopping cycle. As a result, when the transmission rate is improved by increasing the number of times of data transmission within the hopping cycle, the number of times of data transmission within the hopping cycle is increased in step 72, and then the process proceeds to step 73.

On the other hand, if the result of determination in step 69 is that it is not possible to increase the number of data transmissions within the hopping cycle, the process directly proceeds from step 69 to step 73, and at step 70. Even if the result of the determination is that there is no margin in the number of data transmissions within the hopping cycle, the process directly proceeds from step 70 to step 73.
Proceed to.

In step 73, it is judged whether or not the transmission of the transmission data DIT from the transmission data transmission unit 11 is completed, and the transmission data DI from the transmission data transmission unit 11 is judged.
If the transmission of T has not been completed, the process returns to step 63 to repeat the steps from step 63 onward, and if the transmission of the transmission data DIT from the transmission data transmission unit 11 has been completed, control is performed. finish.

In the above description, the operation control unit 40 is assumed to be in the operation state for data transmission of the transmission data DIT by the frequency hopping communication method. However, the operation control unit 40 performs the operation state of the transmission data DIT. The operation of the operation control unit 40 is substantially the same as described above even when the operation state for data transmission by the time hopping communication system is set. However, in the operation control unit 40,
Instead of the frequency control signal OHP corresponding to the hopping sequence determined by the hopping sequence determination unit 41, a timing control signal OHP corresponding to the hopping sequence determined by the hopping sequence determination unit 41 is formed, and the timing control signal OHP is formed. Is supplied to the timing control unit 16.

Then, the timing control section 16 supplies the control signal CTST according to the timing control signal OTS and the timing control signal OHP to the data burst synthesizing section 15. As a result, a plurality of data transmission time slots forming a hopping sequence in each hopping cycle for data transmission of the transmission data DIT by the time hopping communication method are set in the data burst combining unit 15.

FIG. 5 receives the sending data DFTT sent from the example of the wireless communication apparatus shown in FIG. 1, and sends the sending data DFRT based on the sending data DJT including the reception status information data if necessary. An example of the receiving side radio | wireless communication apparatus which transmits is shown.

In the example shown in FIG. 5, the transmission data DFTT transmitted from the transmission section 20 in the example of the wireless communication apparatus shown in FIG. 1 is transmitted to the reception section 83 through the transmission / reception antenna 81 and the transmission / reception demultiplexing section 82. Guided and received. Transmission data DFTT received by the receiving unit 83
Are supplied to the frequency conversion unit 84.

In the frequency converter 84, the receiver 83
The frequency control unit 8 responds to the transmission data DFTT from
Frequency conversion processing is performed in accordance with the control signal CFRT from 5 to obtain carrier wave data DMTT that are successively connected in each hopping cycle, and these are supplied to the demodulation unit 86. The demodulation unit 86 performs demodulation processing according to a preset demodulation method on each of the carrier wave data DMTT consecutively in each hopping cycle, obtains burst data DBTT consecutively, and extracts them as a data burst. Supply to the part 87. The burst data DBTT includes the error correction information data DEC and the data transmission slot information data D.
It is supposed to include SP.

In the data burst extraction unit 87, the burst data DBTT from the demodulation unit 86 is subjected to a data burst extraction process in accordance with the control signal CTST from the timing control unit 88, and the error correction information data D
Form data DLIT which is supposed to include EC and data transmission slot information data DSP. The data DLIT obtained in the data burst extraction unit 87 is supplied to the deinterleave unit 89, and the deinterleave unit 89
The data is subjected to a predetermined deinterleaving process in 1 to be data DCIT, which is supplied to the error correction decoding unit 90.

In the error correction decoding unit 90, the error correction decoding process is performed on the data DCIT to obtain the reproduced data DKT. Such reproduction data DKT
Includes transmission data DIT, error correction information data DEC, and data transmission slot information data DSP sent from the transmission data sending unit 11 in the example of the wireless communication device shown in FIG. The reproduction data DKT obtained by the error correction decoding unit 90 is derived through the reproduction data deriving unit 91.

The reproduced data DKT obtained by the error correction decoding section 90 is supplied to the error correction mode detecting section 92 and the data transmission slot detecting section 93, respectively. The error correction mode detection unit 92 performs error correction coding performed on the data DLIT in the data burst synthesis unit 15 in the wireless communication device shown in FIG. 1 based on the error correction information data DEC included in the reproduction data DKT. The mode is detected, error correction mode detection data DDE representing the detected mode of error correction coding is formed, and this is supplied to the collision detection unit 94. The data transmission slot detector 93
Based on the data transmission slot information data DSP included in the reproduction data DKT, the data transmission time set in the frequency conversion unit 18 in the wireless communication device shown in FIG. 1 minus the frequency slot is detected, and the detected data transmission time is detected. Data transmission slot detection data DDT representing a frequency slot is formed and supplied to the collision detection unit 94, the collision prediction unit 95, and the slot usage state detection unit 96.

In addition to the error correction mode detection data DDE and the data transmission slot detection data DDT, the collision detection unit 94 is also supplied with the reproduction data DKT obtained by the error correction decoding unit 90. Then, in the collision detection unit 94, the transmission unit 2 in the example of the wireless communication device shown in FIG. 1 is based on the error correction mode detection data DDE, the data transmission slot detection data DDT, and the reproduction data DKT.
The data collision that occurs in the transmission data DFTT transmitted from 0 is detected, the data collision information data DXS that indicates that the occurrence of the data collision has occurred is formed, and the data collision information data DXS is formed in the reception status information data forming unit 97. Supply.

In the collision prediction unit 95 to which the data transmission slot detection data DDT from the data transmission slot detection unit 93 is supplied, the data transmission slot detection data DD
After the supply of T, the data collision that will occur with the sending data DFTT transmitted from the transmission unit 20 in the example of the wireless communication device shown in FIG. 1 is predicted, and the prediction of the data collision is brought about. The data collision prediction data DYS represented is formed and supplied to the reception status information data forming unit 97. For the prediction of such data collision in the collision prediction unit 95, for example, the example of the wireless communication device shown in FIG. 1 and the receiving side wireless communication device shown in FIG. 5 are used under the cellular communication system. In the state in which the receiving side wireless communication device shown in FIG. 2 constitutes a base station in one cell, the example of the wireless communication device shown in FIG. 1 is the receiving side wireless communication device shown in FIG. It is performed when a handover to a cell to be created is to be performed.

Further, in the slot use state detection unit 96 to which the data transmission slot detection data DDT from the data transmission slot detection unit 93 is supplied, the time-frequency slot which is not used for data transmission within the hopping cycle is set. The slot use status data DIF that indicates the existence of the time-frequency slot that is not used for data transmission within the hopping cycle is formed and is supplied to the reception status information data forming unit 97.

In the reception status information data forming unit 97, according to the data collision information data DXS, the data collision prediction data DYS, and the slot usage status data DIF,
Information indicating that the occurrence of data collision has occurred,
Form reception status information data DXI that conveys information indicating that prediction of data collision has occurred or information indicating the presence of time-frequency slots that are not used for data transmission within the hopping period, and add it. Supply to section 98.

The data addition section 98 is also supplied with the transmission data DIR from the transmission data transmission section 99. In the data addition section 98, the transmission data obtained by adding the reception status information data DXI to the transmission data DIR. The DJT is formed. Then, the transmission data DJT obtained from the data addition unit 98 is supplied to the error correction coding unit 100.

In the error correction coding unit 100, the transmission data DJT is subjected to error correction coding processing to obtain the data DCJT. Error correction coding unit 100
The data DCJT obtained in the above is supplied to the interleaving unit 101, and is subjected to a predetermined interleaving process in the interleaving unit 101 to obtain the data DJT.
The LJT is supplied to the data burst synthesizing unit 102.

In the data burst synthesizer 102,
Burst data DBJT for each time-frequency slot for data transmission by the frequency hopping communication method or burst data DBJT for each time slot for data transmission by the time hopping communication method are combined based on the interleaved data DLJT. To do. At this time, the burst data DBJT are sequentially combined under the preset hopping cycle, and the timing within each hopping cycle is controlled by the control signal C from the timing control unit 103.
It is set according to TSR.

The consecutive burst data DBJT obtained from the data burst synthesizer 102 is supplied to the modulator 104. In the modulator 104, the burst data DBJT is used as the modulation information, and the carrier signal selected in advance is subjected to the modulation processing according to the preset modulation method,
The carrier wave data DMRT that is sequentially connected is formed and supplied to the frequency conversion unit 105.

The frequency conversion section 105 performs frequency conversion processing on each of the consecutive carrier wave data DMRT from the modulation section 104 according to the control signal CFRR from the frequency control section 106 to form transmission data DFRT, It is supplied to the transmitter 107. The transmission unit 107 transmits the transmission data DFRT from the frequency conversion unit 105 to the transmission / reception demultiplexing unit 8
2 and the transmitting / receiving antenna 81.

Under such a condition, when data is transmitted by the frequency hopping communication system, the control signal CF from the frequency control unit 106 for each of the consecutive carrier data DMRT in the frequency conversion unit 105.
The frequency conversion process according to RR is performed in a preset use frequency band in a manner corresponding to a predetermined hopping sequence. As a result, the transmission data DFRT is transmitted within each hopping cycle using a plurality of time-frequency slots forming a defined hopping sequence.

On the other hand, when data is transmitted by the time hopping communication system, the data burst synthesizing unit 102 synthesizes the burst data DBJT based on the interleaved data DLJT.
Based on the timing control by the control signal CTSR from the timing control unit 103, in each hopping cycle,
It is performed at a timing corresponding to the defined hopping sequence. Further, in the frequency conversion unit 105, the frequency conversion processing according to the control signal CFRR from the frequency control unit 106 for each of the consecutive carrier wave data DMRT is performed so that the transmission data DFRT has a constant frequency. To be done. As a result, the transmission data DFRT is transmitted using a plurality of time slots forming a defined hopping sequence within each hopping cycle.

Thus, in the example of the receiving side wireless communication device shown in FIG. 5, the transmission data including the reception status information data DXI is transmitted from the transmission unit 107 through the transmission / reception demultiplexing unit 82 and the transmission / reception antenna 81. The sending data DFRT based on DJT is sent.

As described above, the example of the wireless communication device shown in FIG. 1 and the example of the receiving side wireless communication device shown in FIG. 5 are used for implementing the wireless communication method in which they perform data transmission by the time hopping communication system. If so, the data transmission can be according to an ultra wide band transmission scheme with time hopping with a predetermined hopping period. That is, the wireless communication method according to the invention described in any one of claims 1 to 9 in the claims of the present application, and any of claims 10 to 17 in the claims of the present application The wireless communication device according to the invention described in 1) can be applied to the ultra wide band transmission system.

The ultra-wide band transmission method is based on base band transmission using a pulse train formed by a series of pulses having an extremely narrow pulse width of, for example, 1 ns (nanosecond) or less. As a method, a modulation method used therein is proposed, for example, as disclosed in Japanese Patent Laid-Open Publication No. 10-508725.

When data transmission / reception by the ultra wide band transmission method is performed by the example of the wireless communication device shown in FIG. 1, ultra wide band transmission is performed by the modulator 17 in the example of the wireless communication device shown in FIG. Modulation processing for the system is performed, and in the demodulation unit 28 in the example of the wireless communication device illustrated in FIG.
Demodulation processing for the ultra wide band transmission system is performed.

[0099]

As is apparent from the above description, the wireless communication method according to the invention described in any one of claims 1 to 9 in the claims of the present application, or
In the wireless communication device according to the invention described in any one of claims 10 to 17, data transmission accompanied by frequency hopping or time hopping with a predetermined hopping cycle is performed by transmitting data within each hopping cycle. For a predetermined number of data collisions. The number of allowed data collisions is determined in relation to the error correction coding scheme that adds redundancy to the transmitted data.

Then, as a result of the data transmission, the reception status information data is transmitted from the receiving side, and when the reception status information data is received and is detected, within the hopping cycle after the detection of the reception status information data. The control is performed according to the information transmitted by the detected reception status information data and the predetermined priority of the transmission data regarding the aspect of the data transmission. Specifically, when the information transmitted by the detected reception status information data is, for example, information indicating that the occurrence of a data collision or the prediction of a data collision has been brought about, a predetermined priority for transmission data is set. According to the control of changing the error correction coding mode for the transmission data, the transmission slot timing control for changing the timing of the data transmission slot within the hopping period after the detection of the reception status information data, or the reception status information data Transmission slot number control is performed to reduce the number of data transmission slots after detection, and more specifically, transmission slot timing control is performed, for example, data transmission that causes data collision or data collision prediction by data transmission. By moving a slot to another slot within the hopping period Done,
Also, the number of transmission slots control is changed to a slot that is not used for data transmission from a data transmission slot that has caused the occurrence of data collision or prediction of data collision by data transmission, and does not perform data transmission in the slot. By doing.

Accordingly, the wireless communication method according to the invention described in any one of claims 1 to 9 in the claims of the present application or any one of claims 10 to 17 According to the wireless communication device of the present invention described above, data transmission is performed, and as a result, the reception status information data transmitted from the reception side represents, for example, a situation where a data collision occurs, a data collision occurs at the reception side. Depending on the data reception status such as the predicted status, for example, depending on the priority of the transmission data, such as processing for suppressing or avoiding data collision under consideration of the predetermined priority of the transmission data. Appropriate processing can be performed.

Furthermore, the wireless communication method according to the invention described in any one of claims 1 to 9 in the claims of the present application, or claims 10 to 1
The wireless communication device according to the invention described in any one of items 7 to 7 can be applied even when performing data transmission / reception by the ultra wide band transmission method.

[Brief description of drawings]

FIG. 1 is a diagram illustrating an example of a wireless communication method according to the invention described in any one of claims 1 to 9 in the claims of the present application; FIG. 18 is a block connection diagram showing an example of a wireless communication device according to the invention described in any one of claims 17 to 17.

FIG. 2 is a table used for explaining the operation of an operation control unit in the example of the wireless communication device shown in FIG.

3 is a flowchart provided for explaining an example of a control operation by an operation control unit in the example of the wireless communication device shown in FIG.

FIG. 4 is a flowchart provided for explaining another example of the control operation by the operation control unit in the example of the wireless communication apparatus shown in FIG.

FIG. 5 is a receiving side wireless communication that receives transmission data transmitted from the example of the wireless communication device shown in FIG. 1 and transmits transmission data based on transmission data including reception status information data as necessary. It is a block connection diagram showing an example of a device.

FIG. 6 is a time chart used for explaining a hopping cycle and a hopping sequence under the frequency hopping communication system.

FIG. 7 is a time chart used for explaining a hopping cycle and a hopping sequence under the time hopping communication system.

[Explanation of symbols]

11, 99 ... Transmission data sending unit, 12, 100 ...
..Error correction coding unit, 13 ... Error correction coding control unit, 14, 101, ... Interleave unit, 1
5, 102 ... Data burst synthesizing unit, 16, 3
0,88,103 ... Timing control unit, 17,1
04 ... Modulator, 18, 26, 84, 105 ...
Frequency converter, 19, 27, 85, 106 ... Frequency controller, 20, 107 ... Transmitter, 21, 82 ...
..Transmitting and receiving demultiplexing units, 22, 81 ... Transmitting and receiving antennas,
25, 83 ... Receiving unit, 28, 86 ... Demodulating unit, 29, 87 ... Data burst extracting unit, 31,
89 ... Deinterleave part, 32, 90 ...
Error correction decoding unit, 33, 91 ... Reproduced data deriving unit, 40 ... Operation control unit, 41 ... Hopping sequence determination unit, 42 ... Error correction mode determination unit, 4
3 ... Data transmission slot determination unit, 44 ... Transmission frequency determination unit within hopping period, 45 ... Collision information /
Collision prediction information detector, 46 ... Transmission condition control information detector, 92 ... Error correction mode detector, 93 ...
Data transmission slot detector, 94 ... Collision detector,
95 ... Collision predicting unit, 96 ... Slot usage state detecting unit, 97 ... Reception status information data forming unit,
98: Data addition unit

Claims (17)

[Claims] 1. Data transmission with frequency hopping or time hopping with a predetermined hopping period,
Within each hopping cycle, while allowing for a predetermined number of data collisions regarding the transmission data, the reception status information data that conveys information regarding the data reception status from the receiving side is detected, and the reception status information data When the detection is made, according to the information transmitted by the detected reception status information data and the predetermined priority of the transmission data regarding the data transmission mode within the hopping cycle after the detection of the reception status information data. A wireless communication method for controlling. 2. When the information transmitted by the detected reception status information data is information indicating that the occurrence of a data collision or the prediction of a data collision has been brought about, according to a predetermined priority for transmission data. , Control for changing the mode of error correction coding for the transmission data, transmission slot timing control for changing the timing of the data transmission slot within the hopping period after detection of the reception status information data, or of the reception status information data 2. The wireless communication method according to claim 1, wherein transmission slot number control is performed to reduce the number of data transmission slots in the hopping cycle after detection. 3. A transmission slot timing control is performed by shifting a data transmission slot which has caused a data collision occurrence or a data collision prediction due to data transmission to another slot within a hopping cycle. 3. The wireless communication method according to claim 2, wherein the number control is performed by changing a data transmission slot that has caused a data collision or predicted a data collision by data transmission to a slot not used for data transmission. 4. The control of the number of transmission slots is performed by changing the data transmission slot that causes the occurrence of data collision or the prediction of data collision by data transmission to a slot not used for data transmission. 4. The wireless communication method according to claim 3, wherein the mode of error correction coding is changed as necessary. 5. When the predetermined priority of the transmission data is higher than the others, the control for changing the error correction coding mode for the transmission data is tried, and the predetermined priority of the transmission data is changed. 4. The wireless communication method according to claim 3, wherein the transmission slot timing control is attempted when the transmission data is relatively high, and the transmission slot number control is attempted when the predetermined priority of the transmission data is relatively low. 6. Within each hopping cycle, in addition to receiving transmission data transmitted while allowing a predetermined number of data collisions, reception is also performed for slots not used for transmission of the transmission data. The wireless communication method according to claim 1, wherein the reception status information data is transmitted based on the result. 7. When the information transmitted by the detected reception status information data is information indicating the existence of a slot that is not used for data transmission, the reception status information is transmitted according to a predetermined priority for the transmission data. Considering the execution of transmission slot timing control that changes the timing of the data transmission slot in the hopping cycle after data detection, or the control of the number of transmission slots that increases the data transmission slot in the hopping cycle after detection of the above reception status upper data The wireless communication method according to claim 1, further comprising: 8. The transmission slot timing control is performed by shifting a selected data transmission slot within a hopping cycle to a slot which is informed by the reception status information data and is not used for data transmission. The wireless communication method according to claim 7. 9. The radio according to claim 1, wherein the data transmission is performed according to an ultra wide band transmission system with time hopping with a predetermined hopping cycle. Communication method. 10. Data transmission means for performing data transmission with frequency hopping or time hopping with a predetermined hopping period while allowing a predetermined number of transmission data collisions of the transmission data within each hopping period, and receiving. Receiving means for receiving the data transmitted from the receiving side, and data detecting means for detecting the receiving status information data that conveys the information regarding the data receiving status in the data transmitted from the receiving side received by the receiving means A detection of the data transmission mode within the hopping cycle in the data transmission performed by the data transmission means after the reception status information data is detected by the data detection means. The information transmitted by the received reception status information data and the transmission data. Wireless communication device configured to include a data transmission control means for performing control in accordance with a predetermined priority Te. 11. The data transmission control means transmits data when the information transmitted by the reception status information data detected by the data detection means is information indicating that the occurrence of data collision or the prediction of data collision has been brought about. Regarding the data transmission by the data transmitting means performed after the reception status information data is detected, the mode of error correction coding for the transmission data is changed according to a predetermined priority of the transmission data transmitted by the means. 11. The transmission slot timing control for changing the timing of the data transmission slot within the hopping cycle, or the transmission slot number control for reducing the number of data transmission slots within the hopping cycle is performed.
The wireless communication device described. 12. The data transmission control means performs transmission slot timing control by shifting a data transmission slot which has caused a data collision occurrence or a data collision prediction by data transmission to another slot within a hopping cycle. 12. The control of the number of transmission slots is performed by changing a data transmission slot that causes data collision or prediction of data collision by data transmission to a slot not used for data transmission. The wireless communication device described. 13. A data transmission control means performs control of the number of transmission slots by changing a data transmission slot which has caused or predicted data collision due to data transmission to a slot which is not used for data transmission. 13. The wireless communication device according to claim 12, wherein the mode of error correction coding for the transmission data transmitted by the data transmission means is changed as necessary. 14. A control for changing a mode of error correction coding for the transmission data when the data transmission control means has a predetermined priority of the transmission data transmitted by the data transmission means higher than the others. , The transmission slot timing control is attempted when the predetermined priority of the transmission data transmitted by the data transmitting means is relatively high, and the transmission slot timing control is attempted when the predetermined priority of the transmission data is relatively low. 13. The wireless communication device according to claim 12, wherein the number of slots control is tried. 15. The data transmission control means transmits when the information transmitted by the reception status information data detected by the data detection means is information indicating the presence of a slot not used for data transmission. Transmission slot timing control for changing the timing of the data transmission slot within the hopping cycle in the data transmission by the data transmission means performed after the reception status information data is detected according to a predetermined priority of the transmission data, or The wireless communication device according to claim 10, wherein execution of control of the number of transmission slots for increasing the number of data transmission slots within a hopping cycle is considered. 16. The data transmission control means uses the transmission slot timing control to select the data transmission slot within the hopping cycle in the data transmission by the data transmission means for the data transmission informed by the reception status information data. 16. The wireless communication device according to claim 15, wherein the wireless communication device is performed by shifting to a non-existing slot. 17. The data transmission means performs data transmission according to an ultra wide band transmission system with time hopping having a predetermined hopping cycle, according to any one of claims 10 to 16. Wireless communication device.