CN1716930A - Communication system, radio communication device and data communication method - Google Patents
Communication system, radio communication device and data communication method Download PDFInfo
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- CN1716930A CN1716930A CN 200510078584 CN200510078584A CN1716930A CN 1716930 A CN1716930 A CN 1716930A CN 200510078584 CN200510078584 CN 200510078584 CN 200510078584 A CN200510078584 A CN 200510078584A CN 1716930 A CN1716930 A CN 1716930A
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Abstract
The second layer processing part (203) of a base station (2a) divides the transmitted data into the size corresponding to a modulation mode, and generates a plurality of divided data blocks. A first-layer processing part (202) modulates the divided data according to the modulation mode, and transmits the data to a wireless communication terminal through an antenna (201). The first-layer processing part (202) determines the modulation mode for transmitting the divided the data based on the quality of circuits, and informs the second-layer processing part (203) of the modulation mode.
Description
Technical field
The present invention relates to a kind of communication system, radio communication device and data communications method of when data communication, seeking to improve throughput.
Background technology
With PHS (Personal Handyphone System) is example, adopts Figure 16, and just the communication sequence in the radio communication in the past describes.Order when the figure shows the 2 pairs of wireless communication terminals in base station, 1 transmission data.At this, the data of transmission are 80 bytes, by per 20 bytes data 4 are cut apart, and send with the modulated back of π/4 shift QPSK (Quadrature Phase Shift Keying, quarternary phase-shift keying (QPSK)) modulation system.
Put down in writing the ground floor (physical layer) in wireless communication terminal 1 and the base station 2 and the transmission control and treatment of the second layer (data link layer) among Figure 16, omitted processing of its more upper layer among the figure.Be designated as L1, be designated as L2 for ground floor for the second layer.At first, in the data of 80 bytes, the data of initial 20 bytes (partition data) are transmitted (step S1601) from the second layer to ground floor as the L2 frame.In the ground floor, for these data, implement modulation treatment according to π/4 shift QPSK, data are by being wirelessly sent to wireless communication terminal 1 (step S1602).
At the ground floor of wireless communication terminal 1, after data are accepted and implement demodulation process, just be transferred to the second layer (step S1603).Afterwards, similarly per 20 bytes of data are carried out demodulation according to π/4 shiftQPSK, and send to wireless communication terminal 1 (step S1604～S1609) by base station 2.At the second layer of wireless communication terminal 1, after receiving 4 data of cutting apart, each data is combined, be combined into the data of original 80 bytes.The data of combination are delivered to upper layer as L3 (the 3rd layer) frame.
Open in the flat 6-232871 communique the spy, put down in writing a kind of wireless communication system, received the source of the posting a letter wireless terminal of asking packets of information from referring to again of the other side's wireless terminal, generate carry information bag again behind the Bit String of asking carrier information to judge to send again according to referring to again in this packets of information, adopt according to normally accepting the carrier frequency of communicating by letter that carrier information is judged, with this again the carry information bag send to and accept wireless communication terminal.
In the above-mentioned PHS communication mode, no matter circuit quality (communication quality) quality all is to communicate according to fixing modulation system (π/4 shift QPSK).Modulation system, the order low with bit rate has successively: BPSK (Binary Phase Shift Keying, binary phase shift keying), QPSK, 8PSK (8Phase Shift Keying, octaphase-shift keying), 16QAM (16QuadratureAmplitude Modulation, 16 phase quadrature amplitude modulation) etc.
Circuit quality is all changing constantly when communication, for reaching the high speed of data communication, wishes to adopt the adaptive modulation system that switches multiple modulation system to communicate according to circuit quality.Modulation system is altered to communication speed not simultaneously, even the frame length of wireless zone is identical, because the data volume that each cell comprises changes, transmissible data volume also changes, and it is the maximum length variation of L2 frame as a result.For this reason, at receiver side, which kind of mode needs to specify the modulation system of the signal that is received in advance is.But, in the PHS communication mode,, the second layer changes because can't knowing the maximum length of the L2 frame that the variation along with modulation system causes, if after transmitter side switches modulation system, transmit, will produce mistake at receiver side.Therefore, can not adopt adaptive modulation system to communicate, existence can not realize the high speed of data communication, improve the problem of throughput more.
Summary of the invention
The present invention, in view of the above problems, its purpose is to provide a kind of communication system, radio communication device and data communications method that can further improve throughput.
According to the present invention, can obtain the effect of further raising throughput.
One of the present invention provides a kind of communication system, the base station that has wireless communication terminal and carry out data communication with this wireless communication terminal.Square device comprises one of in described wireless communication terminal and the described base station: data partitioning unit, and it will send data and be divided into and modulation system size accordingly, and generate a plurality of partition datas; The modulation system notification unit, it is according to the communication quality decision modulation system to the described partition data that next sends, and to described data partitioning unit notice; Data transmission unit, it is modulated described partition data with the described modulation system that is determined, and sends to the opposing party's device in described wireless communication terminal and the described base station.Described the opposing party's device comprises: data are accepted the unit, and it accepts the described partition data by described data transmission unit sent; The data combining unit, it is with described a plurality of partition data combinations of being accepted, and recovery is described transmission data.
The present invention's two, in described communication system, described the opposing party's device also has to refer to again asks transmitting element, its described partition data not by the described situation of accepting to accept the unit under, will be used to ask described side's device to ask information to send to referring to again of sending again of described partition data; Described side's device also has to refer to ask again accepts the unit, and it accepts the described information of asking of referring to again; Described data partitioning unit is receiving described referring to again under the situation of asking information, according to the modulation system of being notified by described modulation system notification unit, generate contain requested described partition data send data again, and to described data transmission unit output; Described data transmission unit is modulated the described data of sending again with the described modulation system that is determined, and sends to described the opposing party's device.
The present invention's three, in described communication system, described data partitioning unit, receiving described referring to again under the situation of asking information, to contain from asking the represented specific described partition data of information to send data again to the data of described transmission till with the terminal of data by described referring to again, be divided into and the modulation system of being notified by described modulation system notification unit size accordingly, generate a plurality of partition datas that send again, and export to described data transmission unit; Described data transmission unit with described a plurality of send partition data and described announcement information to modulate again with the described modulation system that is determined after, and send to described the opposing party's device.
The present invention's four, in described communication system, described data partitioning unit, receiving described referring to again under the situation of asking information, when the modulation system of being notified by described modulation system notification unit is identical with the modulation system of described specific partition data when sending, with described specific partition data as sending data to export again to described data transmission unit; Described data transmission unit with described send data to modulate again with the described modulation system when described send after, and send to described the opposing party's device.
The present invention's five in described communication system, has the modulation system memory cell; Described data partitioning unit, in the modulation system of being notified by described modulation system notification unit, with the modulation system of described specific partition data when sending when inequality, with reference to the modulation system of described stored this specific partition data when sending, and the corresponding described specific partition data conduct of modulation system will be with described the transmission time send data to export to described data transmission unit again; Described data transmission unit is modulated described modulation system when sending data with described send again, and sends to described the opposing party's device.
The present invention's six provides a kind of and will send the radio communication device that data send, and comprises: data partitioning unit, and it is divided into described transmission data with modulation system big or small accordingly, and generates a plurality of partition datas; The modulation system notification unit, it is according to the communication quality decision modulation system to the described partition data that next sends, and to described data partitioning unit notice; Data transmission unit, it is modulated described partition data with the described modulation system that is determined, and sends.
The present invention's seven in described radio communication device, also has to refer to ask again and accepts the unit, and its acceptance is used to ask refer to the information of asking again to what described partition data sent again; Described data partitioning unit is receiving described referring to again under the situation of asking information, according to the modulation system of being notified by described modulation system notification unit, generate contain requested described partition data send data again, and to described data transmission unit output; Described data transmission unit is modulated the described data of sending again with the described modulation system that is determined, and sends.
The present invention's eight, in described radio communication device, described data partitioning unit, receiving described referring to again under the situation of asking information, to contain from by described refer to again ask the data of the represented specific described partition data of information till the terminal of described transmission data send data again, be divided into and the modulation system of being notified by described modulation system notification unit size accordingly, generate a plurality of data of sending again, and export to described data transmission unit; Described data transmission unit is modulated described a plurality of partition data and described announcement informations of sending again with the described modulation system that is determined, and sends.
The present invention's nine, in described radio communication device, described data partitioning unit, receiving described referring to again under the situation of asking information, when the modulation system of being notified by described modulation system notification unit is identical with the modulation system of described specific partition data when sending, with described specific partition data as sending data to export to described data transmission unit again; Described data transmission unit is modulated the described data of sending again with the described modulation system when described send, and sends.
The present invention's ten in described radio communication device, has the data that will cut apart by the modulation system memory cell to the determined number storage; Described data partitioning unit, when the modulation system of being notified by described modulation system notification unit and the modulation system of described specific partition data when sending are inequality, with reference to this specific partition data of being stored modulation system when sending, and the corresponding described specific partition data conduct of modulation system will be with described the transmission time send data to export to described data transmission unit again; Described data transmission unit is modulated described modulation system when sending data with described send again, and sends.
The present invention's 11, a kind of data communications method is provided, wireless communication terminal and and this wireless communication terminal carry out communicating between the base station of data communication, comprise: the side's device in described radio communication device and the described base station will send that data are divided into and the step of the corresponding size of modulation system; Generate the step of a plurality of partition datas; According to communication quality decision step to the modulation system of the described partition data that next sends; The step that described partition data is modulated with the described modulation system that is determined; The step that the opposing party's device in described wireless communication terminal and described base station sends; Accept the step of the described partition data of described transmission; With step with a plurality of data combinations of described acceptance.
Description of drawings
Fig. 1 is the block diagram of the structure of communication system according to an embodiment of the present invention.
Fig. 2 represents the block diagram according to the structure of the wireless communication terminal of this execution mode.
Fig. 3 represents the block diagram of structure of the base station of this execution mode.
Fig. 4 is the precedence diagram of the communication sequence of the 1st action in the example of this execution mode.
Fig. 5 is the precedence diagram of the communication sequence of the 1st action in the example of this execution mode.
Fig. 6 is the precedence diagram of the communication sequence of the 2nd action in the example of this execution mode.
Fig. 7 is the precedence diagram of the communication sequence of the 2nd action in the example of this execution mode.
Fig. 8 is the precedence diagram that is used for illustrating the communication hypothesis problem of this execution mode.
Fig. 9 is the precedence diagram that is used for illustrating the communication hypothesis problem of this execution mode.
Figure 10 is expressed as the precedence diagram of communication sequence in the 3rd action example of this execution mode.
Figure 11 is expressed as the precedence diagram of communication sequence in the 3rd action example of this execution mode.
Figure 12 is expressed as the precedence diagram of communication sequence in the 4th action example of this execution mode.
Figure 13 is expressed as the precedence diagram of communication sequence in the 4th action example of this execution mode.
Figure 14 is expressed as the precedence diagram of communication sequence in the 5th action example of this execution mode.
Figure 15 is expressed as the precedence diagram of communication sequence in the 5th action example of this execution mode.
Figure 16 is the precedence diagram of communication sequence in the past.
Embodiment
Below, with reference to description of drawings preferred implementation of the present invention.Fig. 1 is the structured flowchart of the communication system of an embodiment of the present invention.Among the figure, wireless communication terminal 1a and 1b are the terminals with radio communication function of phs terminal etc. for example. Wireless communication terminal 1a and 1b are respectively with base station 2a and 2b direct communication.Base station 2a and 2b are connected with network 3.Server 4 is content servers of content-datas such as dispensing motion image data or music data.Wireless communication terminal 1a or the transmitting-receiving etc. of carrying out voice data with wireless communication terminal 1b in when conversation by base station 2a, network 3 and base station 2b are perhaps passed through base station 2a and network 3 from server 4 data download.About wireless communication terminal 1b too.
Fig. 2 represents the wireless communication terminal 1a structured flowchart of (wireless communication terminal 1b too).Below, each structure among the figure is described.Antenna 101 carries out the transmitting-receiving of electric wave with base station 2a.Ground floor handling part 102 sends the transmission control and treatment of the ground floor of the detection of the modulation treatment of data, the demodulation process of accepting data, circuit quality etc., simultaneously according to the circuit quality decision modulation system that detects.Second layer handling part 103 carries out the transmission control and treatment of the second layer of ARQ (Automatic Repeat Request) control (sending control automatically again) etc.The demodulation mode of the previously treated data of temporary transient storage part 104 temporary transient storages etc.
Each several part in the control part 105 control wireless communication terminal 1a.Data such as the telephone number of 106 pairs of our stations of storage part or store from various data such as server 4 data downloaded.Display part 107 has the liquid crystal panel of display message etc.Enter key 108 has the various keys of being operated by the user.Codec 109 generates the drive signal that is used to drive loud speaker 110 based on the voice data of partner, and generates the voice data that sends usefulness based on the user's who exports from microphone 111 voice signal.Loud speaker 110 produces the sound of partner based on the drive signal that is generated by codec 109.Microphone 111 converts user's sound to voice signal.
Fig. 3 represents base station 2a () structured flowchart about base station 2a too.Below, each structure among the figure is described.The function of antenna 201～storage part 206, since identical with the function of each several part of antenna 101～storage part 106 among the wireless communication terminal 1a, explanation therefore omitted.Interface 207 is and the communication interface of network 3, carries out the transmitting-receiving of data by network 3 and base station 2b and server 4.
Then, describe with regard to the 1st action example when communicating in the present embodiment as the wireless communication terminal 1a of radio communication device and base station 2a.Here, be connected with server 4 by base station 2a and network 3 with wireless communication terminal 1a and under the situation of server 4 data download communicating by letter between wireless communication terminal 1a and the base station 2a be that example describes.Below in all action example, though be base station 2a to be sent data conditions to wireless communication terminal 1a describe, but wireless communication terminal 1a sends data conditions to base station 2a, or it is also identical to carry out the situation of data transmit-receive between wireless communication terminal 1b and the base station 2b.
Fig. 4 and Fig. 5 represent the communication sequence in the 1st action example.Among Fig. 4, the ground floor (physical layer) among wireless communication terminal 1a and the base station 2a and the transmission control and treatment of the second layer (data link layer) have been put down in writing.Omitted the processing of this more upper layer among the figure.Be designated as L1, be designated as L2 for ground floor for the second layer.In this action example, the data of 120 bytes are cut apart by 4, and send to wireless communication terminal 1a by base station 2a.At first, among the 2a of base station, second layer handling part 203, based on current modulation system (π/4 shift QPSK), with 20 byte datas (partition data) that start in 120 byte datas as the data of frame number 1 and export to ground floor handling part 202 (step S401).
Ground floor handling part 202 carries out modulation treatment etc. for these data, and sends to wireless communication part 1a (S402) by antenna 201.Ground floor handling part 102 among the wireless communication terminal 1a is accepted data by antenna 101.Ground floor handling part 102 is implemented demodulation process to these data, and data length (20 byte) is kept at the head of data as message length, and exports to second layer handling part 103 (step S403).Among the 2a of base station, ground floor handling part 202 is after the data that send frame number 1, and the detection line quality then decides the next modulation system (step S404) of the partition data of the frame number 2 of transmission according to circuit quality.Ground floor handling part 202 for example determines that modulation system is 8PSK, and to second layer handling part 203 notice modulation systems (step 405).
Accept the second layer handling part 203 of modulation system notice, the partition data of 30 bytes that will be corresponding with the 8PSK that is notified cuts out from the data of 100 remaining bytes, and exports to ground floor handling part 202 (step S406) as the data of frame number 2.Same with above-mentioned action, these data are sent to wireless communication terminal 1a (step S407), and export to second layer handling part 103 (step S408) from the ground floor handling part of accepting by antenna 101 102.Among the 2a of base station, the modulation system (step S409) of the data of the ensuing frame number 3 of ground floor handling part 202 decisions, and to second layer handling part 203 notice modulation systems (step S410).
Fig. 5 represents the precedence diagram after Fig. 4.Same with said sequence, frame number 3 and 4 data send to wireless communication terminal 1a (step S411～S420) from base station 2a.When the data of last frame number 4 arrive, the second layer handling part 103 of wireless communication terminal 1a, from the partition data of frame number 1～4, remove head after, carry out combination, restore and be 120 original byte datas.Second layer handling part 103 is exported to control part 105 with data recovered.
Then, the 2nd action example to present embodiment describes.Fig. 6 and Fig. 7 represent the order that the 2nd action is communicated by letter in the example.Among Fig. 6, at first same with the 1st action example, the data of frame number 1 are modulated with π/4 shift QPSK, and send to wireless communication terminal 1a (step S601～S603) from base station 2a.Among the 2a of base station, the modulation system (step S604) of the data of ground floor handling part 202 decision frame numbers 2, and to second layer handling part 203 notice modulation systems (step S605).
Then, the data of frame number 2 (30 byte) are modulated with 8PSK, and send to wireless communication terminal 1a (step S606～S607).Here, suppose that these data lacked to fall before arriving wireless communication terminal 1a.The modulation system (step S608) of the data of ground floor handling part 202 decision frame numbers 3 among the 2a of base station, and to second layer handling part 203 notice modulation systems (step S609).
On the other hand, second layer handling part 103 carries out ARQ control in radio communication device 1a, data according to frame number 2 are not accepted within a certain period of time, then judgment data lacks to fall, and the request that generates send frame number 2 later referring to again of data to ask information (refer to usually again and ask) again, exports to ground floor handling part 102 (step S610).Ground floor handling part 102 asks information to implement modulation treatment for referring to again, sends to base station 2a (step S611) by antenna 101.Ground floor handling part 202 among the 2a of base station accepts to refer to the information of asking by antenna 201 again, implements to export to second layer handling part 203 (step S612) after the demodulation process.
Fig. 7 represents the order after Fig. 6.Second layer handling part 203, based on from ground floor handling part 202 output refer to the information of asking again, send the action of the later data of frame number 2.Second layer handling part 203 will be cut out from the data of remaining 100 bytes by the partition data of pairing 40 bytes of 16QAM of ground floor handling part 202 notice among the step S609, and exports to ground floor handling part 202 (step S613) as the data of frame number 2.
These data, S602～S603 is same with step, sends to wireless communication terminal 1a from base station 2a, handles (step S614～S615) by the wireless communication terminal 1a that it is accepted.Afterwards, same with aforesaid action, the data of frame number 3～4 send to wireless communication terminal 1a (step S616～S625) from base station 2a.When the data of last frame number 4 arrived, the second layer handling part 103 of wireless communication terminal 1a carried out combination remove head from the partition data of frame number 1～4 after, restored to be 120 original byte datas.Second layer handling part 103 is exported to control part 105 with the data of restoring.
In Fig. 6 and the communication shown in Figure 7, lack at certain partition data under the situation about falling, wireless communication terminal 1a detects it, and request is sent lacking all the later data of data that fall again to base station 2a.To this, lack at certain partition data under the situation about falling, request sends the data that lack to wireless communication terminal 1a to base station 2a, can imagine following problem can take place.Below, adopt Fig. 8 and Fig. 9 to describe with regard to this problem.
Among Fig. 8, same with step S601～S603 of Fig. 6, the data of frame number 1 send to wireless communication terminal 1a (step S801～S803) from base station 2a.Then, S604～S605 is same with step, the modulation system of the data of ground floor handling part 202 decision frame numbers 2, and to second layer handling part 203 notice modulation systems (step S804).The data of frame number 2 (20 byte) lack to fall and no show wireless communication terminal 1a (step S805～S806) though send to wireless communication terminal 1a equally.The modulation system of the data of ground floor handling part 202 decision frame numbers 3, and to second layer handling part 203 notice modulation systems (step S807).
Then, same with the step S625 of step S618～Fig. 7 of Fig. 6, the data of frame number 3～4 send to wireless communication terminal 1a (the step S814 of step S808～Fig. 9) by base station 2a.In wireless communication terminal 1a, owing to do not accept the data of frame number 2, so second layer handling part 103 generates request and only send the selection of the data of frame number 2 to refer to the information of asking again again, and exports to ground floor handling part 102 (step S815).Ground floor handling part 102 is asked information to implement modulation treatment for selecting to refer to again, and is sent to base station 2a (step S816) by antenna 101.Ground floor handling part 202 among the 2a of base station accepts to select to refer to the information of asking by antenna 201 again, and implements to export to second layer handling part 203 (step S817) after the demodulation process.
And, ground floor handling part 202 detection line qualities, the modulation system of the partition data that next decision sends, and to second layer handling part 203 notice modulation systems (step S818).Accept the second layer handling part 203 of notice, prepare frame as pairing 30 bytes of 8PSK of the modulation system of being notified, and will be kept in this frame by the data (20 byte) of the frame number 2 of step S805 output, export to ground floor handling part 202 (step S819) then.Yet, in the space of 30 bytes, only preserve the data of 20 bytes in this frame, 10 remaining bytes are nonsensical.
If these data are sent to wireless communication terminal 1a (step S820), then second layer handling part 103 is collected the frame of 30 bytes in wireless communication terminal 1a, but owing in fact only preserved the data of 20 bytes, therefore second layer handling part 103 can not be understood these data, can not be original data with the data recovery of frame number 1～4.Its result makes a mistake, and wireless communication terminal 1a asks data are sent again for base station 2a.Like this, lack at certain partition data under the situation about falling, if wireless communication terminal 1a is for base station 2a, only request is sent lacking the data that fall again, then about lacking the partition data that falls, under the different situation of the modulation system of modulation system when initial transmission when sending again, wireless communication terminal 1a just can not normally accept data.
Secondly, describe about the communication means that addresses the above problem.Figure 10 and Figure 11 represent the communication sequence of the 3rd action in the example of present embodiment.Among Figure 10,, therefore omit explanation because the action of step S1001～S1014 is identical with the action of step S801～S814 of Fig. 8 and Fig. 9.And, among the step S1015, the modulation system of the ensuing data of ground floor handling part 202 decisions, and to second layer handling part 203 notice modulation systems.But, second layer handling part 203 will be by the modulation system of ground floor handling part 202 notice among step S1001, S1005, S1008 and the S1012, sets up related modulation system information stores in temporary transient storage part 204 with the identifying information (frame number etc.) of the partition data of this modulation system correspondence.Here Cun Chu modulation system is by given frame amount storage.
Then, same with step S815～S817 of Fig. 9, only request a selection that frame number 2 is sent is again referred to and is asked information to send to base station 2a (the step S1016 of Figure 11～S1018) by wireless communication terminal 1a.The 203 following actions of second layer handling part: all data send to wireless communication terminal 1a till the data of the frame number 4 of the data to data terminal of the frame number 2 that will send again from request.But wireless communication terminal 1a is owing to a request is sent the data of frame number 2 again, so base station 2a need notify the data of sending frame number 2～4 again to wireless communication terminal 1a.And, for the data of frame number 2, under the different situation of the modulation system when initial transmission when sending again, base station 2a notifies this thing to wireless communication terminal 1a, second layer handling part 203 is asked information (announcement information) according to following newly referring to again, notifies above-mentioned information to wireless communication terminal 1a.
Second layer handling part 203 is confirmed to select to refer to the information of asking again, and is read modulation system information and reference from temporary transient storage part 204.Second layer handling part 203 is judged according to modulation system, is modulated according to any modulation system of past to send by selecting to refer to the partition data (data of frame number 2) of asking information to be asked to send again again.Here, at the π/4 shift QPSKs of step S1004 notice as the modulation system of the data of frame number 2, behind step S1015 notice 8PSK, second layer handling part 203 judges that the modulation system of the data that send in the past is different with the modulation system of the data that send once more afterwards.Second layer handling part 203 sends the data of requested frame number 2～4 to communication terminal, and modulation system that generates the data that are used to notify frame number 2 and the former different information of asking of newly referring to again, and exports to ground floor handling part 203 (step S1019).
This newly refers to the information of asking again, is sent to wireless communication terminal 1a (step S1020), and sends to second layer handling part 103 (step S1021).Ground floor handling part 102 and second layer handling part 103 are newly referred to the information of asking again based on this, confirm the data of frame number 2 different modulation system with previous the transmission time is sent, and the data of frame number 2～4 are sent again.Generate notice by ground floor handling part 102 and send confirmation again, and send to base station 2a (step S1022～S1023) what new information request information was accepted.Also have, the modulation system of the ensuing data of ground floor handling part 202 decisions, and to second layer handling part 203 notice modulation systems (step S1024).After, same with above-mentioned action, the data of frame number 2～4 send to wireless communication terminal 1a (step S1025～S1035) by base station 2a.
The second layer handling part 103 of wireless communication terminal 1a carries out combination remove head from the partition data of frame number 1～4 after, restores to be 110 original byte datas.Second layer handling part 203 is exported to control part 105 with the data of restoring.Second layer handling part 103 generates to be accepted to prepare ending message (RR:Receive Ready), and exports to ground floor handling part 102 (step S1036).This acceptance is prepared ending message and is sent to base station 2a (step S1037～S1038).And, the modulation system of the ensuing data of ground floor handling part 202 decisions, and to second layer handling part 203 notice modulation systems (step S1039).
Next, the 4th action example about present embodiment describes.Figure 12 and Figure 13 represent the order that the 4th action is communicated by letter in the example.The action of the step S1218 of the step S1201 of Figure 12～Figure 13 is identical with the action of the step S1018 of the step S1001 of Figure 10～Figure 11, therefore omits explanation.But the data of frame number 1～4 are all modulated with π/4 shift QPSK, and send to wireless communication terminal 1a.
Then, second layer handling part 203 is confirmed to select to refer to the information of asking again, reads modulation system information and reference from temporary transient storage part 204 simultaneously.Second layer handling part 203 is judged according to modulation system information, is modulated and is sent by which kind of modulation system of past by selecting to refer to the partition data (data of frame number 2) of asking information to be asked to send again again.At the π/4 shift QPSKs of step S1204 notice as the modulation system of the data of frame number 2, because at step S1215 notice π/4 shift QPSK, so second layer handling part 203 judges that the modulation system of the data that send in the past is identical with the modulation system of the data that send once more afterwards.
Second layer handling part 203 in this case, step S1205 will be to the data of ground floor handling part 202 output the data of identical data length export to ground floor handling part 202 (step S1219).Ground floor handling part 202 modulating with identical before modulation system, and sends to wireless communication terminal 1a (step S1220) by antenna 201 with these data.Ground floor handling part 102 is accepted this data by antenna 101, and these data are implemented demodulation process, exports to second layer handling part 103 (step S1221) then.When the data of frame number 2 arrived, the second layer handling part 103 of wireless communication terminal 1a carried out combination remove head from the partition data of frame number 1～4 after, and restored and be 80 original byte datas.Second layer handling part 103 is exported to control part 105 with the data of restoring.The action of step S1223～S1225 is identical with the action of the step S1036 of Figure 11～S1038, therefore omits explanation.
Secondly, the 5th action example to present embodiment describes.Figure 14 and Figure 15 represent the order that the 5th action is communicated by letter in the example.The action of the step S1419 of the step S1401 of Figure 14～Figure 15 is identical with the action of the step S1001 of Figure 10～S1015, therefore omits explanation.But, ground floor handling part 202 when sending partition data to wireless communication terminal 1a, generate will this moment modulation system and the modulation system information that is associated of the identifying information of the partition data of transmission, and be kept at temporary transient storage part 204.Then, same with step S1016～S1018 of Figure 11, ask information (selecting to refer to again the information of asking) to send to base station 2a (step S1420～S1422) to referring to again of sending again of the data of frame number 2 request from wireless communication terminal 1a.
Ground floor handling part 202 is confirmed from what wireless communication terminal 1a accepted to refer to the information of asking again, reads modulation system information and reference from temporary transient storage part 204 simultaneously.Second layer handling part 203 is judged based on modulation system information, is modulated and is sent by which kind of modulation system of past by selecting to refer to the partition data (data of frame number 2) of asking information to be asked to send again again.Because the modulation system of the data of the frame number 2 that sends at step S1407 is 8PSK, so ground floor handling part 202 is 8PSK with the modulation system decision of the data of frame number 2, and is notified to second layer handling part 203 (step S1424).
Then, the data of frame number 2 are to be sent to wireless communication terminal 1a (step S1425～S1427) after the 8PSK modulation.When the data of frame number 2 arrive, the second layer handling part 103 of wireless communication terminal 1a, carry out combination remove head from the partition data of frame number 1～4 after, restore and be 120 original byte datas, second layer handling part 103 is exported to control part 105 with the data of restoring.
In addition, the length of the partition data of every kind of modulation system is an example, but is not limited to above-mentioned execution mode.And, be not limited to PHS according to the communication system of present embodiment, can also be mobile telephone system.
As above-mentioned, according to the 1st of present embodiment～the 5th action example, ground floor handling part 202 (perhaps the ground floor handling part 102) correspondingly determines the modulation system of the partition data that next sends according to circuit quality, simultaneously to second layer handling part 203 (perhaps second layer handling part 103) notice modulation system, the second layer handling part 203 of accepting notice just can further improve throughput by according to generating partition data with the corresponding size of its modulation system.And, according to the 2nd～the 5th action example, what take place in that the factor certificate is lacked to fall refers to when asking information to be accepted again, second layer handling part 203 generate contain requested frame number data send data again, and ground floor handling part 202 sends by antenna 202 and send data again, even under the situation of mistakes such as taking place that data lack to fall, also can send data again, and improve reliability of data communication.
According to the 2nd action example, to referring to again under the situation about asking usually that the later data of the frame of mistakes such as lacking to fall are sent again, can correspondingly send again according to modulation system sending the wrong later data of frame in the request that takes place.According to the 3rd action example, only the selection that the data of the frame of lack the to fall mistake of etc.ing are sent is again referred under the situation about asking again in the request that takes place, with requested frame, simultaneously data are thereafter correspondingly sent according to modulation system again.
According to the 4th action example, only the selection that the data of the frame of mistakes such as lacking to fall are sent is again referred under the situation about asking again sending request, when the modulation system when sending mistake is identical with the modulation system of the data of sending again once more, send again after just can only the data of requested frame being modulated with this modulation system.According to the 5th action example, in that taking place, request only the selection that the data of the frame of mistakes such as lacking to fall are sent is again referred under the situation about asking again, to the second layer, notify the modulation system when sending mistake to ground floor, and send again after only the data of requested frame being modulated with this modulation system.
More than, having been described in detail with regard to embodiments of the present invention with reference to accompanying drawing, concrete structure is not limited to these execution modes, and various change designs can also be arranged in the scope that does not break away from purport of the present invention.
Claims (11)
1, a kind of communication system, the base station that has wireless communication terminal and carry out data communication with this wireless communication terminal is characterized in that,
Square device comprises one of in described wireless communication terminal and the described base station:
Data partitioning unit, it will send data and be divided into and modulation system size accordingly, and generate a plurality of partition datas;
The modulation system notification unit, it is according to the communication quality decision modulation system to the described partition data that next sends, and to described data partitioning unit notice;
Data transmission unit, it is modulated described partition data with the described modulation system that is determined, and sends to the opposing party's device in described wireless communication terminal and the described base station;
Described the opposing party's device comprises:
Data are accepted the unit, and it accepts the described partition data by described data transmission unit sent;
The data combining unit, it is with described a plurality of partition data combinations of being accepted, and recovery is described transmission data.
2, communication system according to claim 1 is characterized in that,
Described the opposing party's device also has to refer to again asks transmitting element, its described partition data not by the described situation of accepting to accept the unit under, will be used to ask described side's device to ask information to send to referring to again of sending again of described partition data;
Described side's device also has to refer to ask again accepts the unit, and it accepts the described information of asking of referring to again;
Described data partitioning unit is receiving described referring to again under the situation of asking information, according to the modulation system of being notified by described modulation system notification unit, generate contain requested described partition data send data again, and to described data transmission unit output;
Described data transmission unit is modulated the described data of sending again with the described modulation system that is determined, and sends to described the opposing party's device.
3, communication system according to claim 2 is characterized in that,
Described data partitioning unit, receiving described referring to again under the situation of asking information, to contain from asking the represented specific described partition data of information to send data again to the data of described transmission till with the terminal of data by described referring to again, be divided into the modulation system of being notified by described modulation system notification unit big or small accordingly, generate a plurality of partition datas that send again, and to described data transmission unit output;
Described data transmission unit with described a plurality of send partition data and described announcement information to modulate again with the described modulation system that is determined after, and send to described the opposing party's device.
4, communication system according to claim 2 is characterized in that,
Described data partitioning unit, receiving described referring to again under the situation of asking information, when the modulation system of being notified by described modulation system notification unit is identical with the modulation system of described specific partition data when sending, with described specific partition data as sending data to export again to described data transmission unit;
Described data transmission unit with described send data to modulate again with the described modulation system when described send after, and send to described the opposing party's device.
5, communication system according to claim 2 is characterized in that,
Has the modulation system memory cell;
Described data partitioning unit, in the modulation system of being notified by described modulation system notification unit, with the modulation system of described specific partition data when sending when inequality, with reference to the modulation system of described stored this specific partition data when sending, and the corresponding described specific partition data conduct of modulation system will be with described the transmission time send data to export to described data transmission unit again;
Described data transmission unit is modulated described modulation system when sending data with described send again, and sends to described the opposing party's device.
6, a kind ofly will send the radio communication device that data send, it is characterized in that, comprise:
Data partitioning unit, it is divided into described transmission data with modulation system big or small accordingly, and generates a plurality of partition datas;
The modulation system notification unit, it is according to the communication quality decision modulation system to the described partition data that next sends, and to described data partitioning unit notice;
Data transmission unit, it is modulated described partition data with the described modulation system that is determined, and sends.
7, radio communication device according to claim 6 is characterized in that,
Also have to refer to ask again and accept the unit, its acceptance is used to ask refer to the information of asking again to what described partition data sent again;
Described data partitioning unit is receiving described referring to again under the situation of asking information, according to the modulation system of being notified by described modulation system notification unit, generate contain requested described partition data send data again, and to described data transmission unit output;
Described data transmission unit is modulated the described data of sending again with the described modulation system that is determined, and sends.
8, radio communication device according to claim 7 is characterized in that,
Described data partitioning unit, receiving described referring to again under the situation of asking information, to contain from by described refer to again ask the data of the represented specific described partition data of information till the terminal of described transmission data send data again, be divided into the modulation system of being notified by described modulation system notification unit big or small accordingly, generate a plurality of data of sending again, and to described data transmission unit output;
Described data transmission unit is modulated described a plurality of partition data and described announcement informations of sending again with the described modulation system that is determined, and sends.
9, radio communication device according to claim 7 is characterized in that,
Described data partitioning unit, receiving described referring to again under the situation of asking information, when the modulation system of being notified by described modulation system notification unit is identical with the modulation system of described specific partition data when sending, with described specific partition data as sending data to export to described data transmission unit again;
Described data transmission unit is modulated the described data of sending again with the described modulation system when described send, and sends.
10, radio communication device according to claim 7 is characterized in that,
Have the data that to cut apart by modulation system memory cell to the determined number storage;
Described data partitioning unit, when the modulation system of being notified by described modulation system notification unit and the modulation system of described specific partition data when sending are inequality, with reference to this specific partition data of being stored modulation system when sending, and the corresponding described specific partition data conduct of modulation system will be with described the transmission time send data to export to described data transmission unit again;
Described data transmission unit is modulated described modulation system when sending data with described send again, and sends.
11, a kind of data communications method, wireless communication terminal and and this wireless communication terminal carry out communicating between the base station of data communication, it is characterized in that, comprise:
Side's device in described radio communication device and the described base station will send data and be divided into and the corresponding big or small step of modulation system;
Generate the step of a plurality of partition datas;
According to communication quality decision step to the modulation system of the described partition data that next sends;
The step that described partition data is modulated with the described modulation system that is determined;
The step that the opposing party's device in described wireless communication terminal and described base station sends;
Accept the step of the described partition data of described transmission; With
Step with a plurality of data combinations of described acceptance.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2004191671A JP4503367B2 (en) | 2004-06-29 | 2004-06-29 | COMMUNICATION SYSTEM, RADIO COMMUNICATION DEVICE, AND COMMUNICATION METHOD |
| JP2004191671 | 2004-06-29 |
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| CN1716930A true CN1716930A (en) | 2006-01-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106792904A (en) * | 2016-11-23 | 2017-05-31 | 中国联合网络通信集团有限公司 | The transmission method of small bag data and base station |
| WO2018028154A1 (en) * | 2016-08-12 | 2018-02-15 | 中兴通讯股份有限公司 | Data segmentation method, apparatus, and terminal |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6657575B2 (en) * | 2015-03-09 | 2020-03-04 | 富士通株式会社 | Distribution system and distribution method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003319457A (en) * | 2002-04-24 | 2003-11-07 | Mitsubishi Electric Corp | Mobile communication system and method for adaptively modulating |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018028154A1 (en) * | 2016-08-12 | 2018-02-15 | 中兴通讯股份有限公司 | Data segmentation method, apparatus, and terminal |
| US11444721B2 (en) | 2016-08-12 | 2022-09-13 | Zte Corporation | Data segmentation method, apparatus, and terminal |
| CN106792904A (en) * | 2016-11-23 | 2017-05-31 | 中国联合网络通信集团有限公司 | The transmission method of small bag data and base station |
| CN106792904B (en) * | 2016-11-23 | 2020-05-12 | 中国联合网络通信集团有限公司 | Small packet data transmission method and base station |
Also Published As
| Publication number | Publication date |
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| JP4503367B2 (en) | 2010-07-14 |
| JP2006014197A (en) | 2006-01-12 |
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