CN103152147A - Wireless communication device and method thereof and wireless communication control device and method thereof - Google Patents
Wireless communication device and method thereof and wireless communication control device and method thereof Download PDFInfo
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- CN103152147A CN103152147A CN2013100444968A CN201310044496A CN103152147A CN 103152147 A CN103152147 A CN 103152147A CN 2013100444968 A CN2013100444968 A CN 2013100444968A CN 201310044496 A CN201310044496 A CN 201310044496A CN 103152147 A CN103152147 A CN 103152147A
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Abstract
The invention provides a wireless communication device and a method thereof, and a wireless communication control device and a method thereof. Data communication protocols are received and dispatched through using of additional data check bits for improving integral throughput capacity of a system. The system comprises a data receiving judging part, a result receiving sending part, a form judging part and a resending request part. The method comprises that the data receiving judging part carries out data check by means of using of the data check bits for received data, and judges whether the data are right or not; when judging results are wrong, the result receiving sending part discards the data, sends a resending request of the data to another wireless communication device of a sending source, and sends the data with normal meanings to the another wireless communication device of the sending source when the judging results are not wrong; the form judging part judges whether forms of the data are normal or abnormal, and hands over the data to specified processing when the forms of the data are judged to be normal; and the resending request part discards the data when the forms of the data are judged to be abnormal, and requests the data receiving judging part to carry out resending requests of the data.
Description
The application is to be on October 3rd, 2007 applying date, and application number is 200780100941.0, and denomination of invention is divided an application for the application for a patent for invention of " radio communication device, radio communication control apparatus, wireless communications method and wireless communication control method ".
Technical field
The present invention relates to the additional data check digit come the communication protocol of transceiving data radio communication device, be used for the control communication of this radio communication device radio communication control apparatus, use the wireless communications method of this radio communication device and be used for this radio communication device and use the wireless communication control method of the radio communication control apparatus of controlling communication.
Background technology
In recent years, extensively adopt be called as 3G(3rd generation) the agreement (non-patent literature 1) of wireless communication system.
Several developing stage are also arranged in this 3G, except the original 3G that adopts in FOMA etc., occurred also adopting that communication speed is more high speed, portable telephone that be called as the agreement of 3.5G or HSDPA, so now also research be called as the agreement of Super3G or 3.9G.
Agreement in the wireless communication system of the group of this 3G is divided into a plurality of layers, and layer 1 wherein is the layer that is called as physical layer, and this layer 1 is the part of being responsible for actual communication.
Fig. 1 is the agreement pie graph of layer 2.
The layer 2 that is positioned at layer 1 upper strata is by by MAC(MediumAccess Control, media interviews control), RLC(Radio Link Control, Radio Link is controlled), PDCP(Packet Date Convergence Protocol, packet data convergence protocol) 3 sublayers consisting of consist of.
Herein, the piece that is configured in a processing capacity of a layer or a sublayer is called as entity (entity), PDCP entity and RLC entity are corresponding to each LCH(Logical Channel: logic channel), the number of the LCH that only exist to use (being this n of #1～#n in example shown in Figure 1), and corresponding with 1 pair 1 and carry out PDU(Protocol Data Unit respectively) handing-over.Herein, in the PDCP entity, at 3.9G(Super3G) in carry out the processing of the secret grade of data, in the RLC entity, carry out the processing of the repeating transmission control etc. of data.
And, the PDU that the MAC entity will send by each LCH from each RLC entity comprehensively to 1 PDU and send to HARQ(Hybrid Automatic Repeat reQuest), HARQ is by TRCH(Transport Channel, transmission channel) send it to the layer 1 as lower layer.
At receiver side, the MAC entity will be assigned to from the PDU that layer 1 sends by TRCH one or more PDU, and each PDU of cutting apart is sent to each RLC entity by each LCH.
In addition, also there is layer 3 in layer 2 more upper, but herein owing to having direct relation to omit diagram and explanation.
Herein, for each PDU, by 3GPP(3rd Generation Partnersship Project) studied following form: not only can additional user data, can also add the required control information of entity of the other side's side, carry out information exchange with the other side's side.
Fig. 2 means the figure of an example of the data flow of the PDU that has added control information.
In the RLC entity, to the RLC-SDU(Source Data Unit that receives from the PDCP entity of identical LCH) additional header H, and as the PDU(RLC-PDU in the RLC sublayer) send to the MAC entity.In the MAC entity, the RLC-PDU that will send from the RLC entity of a plurality of LCH is as the SDU(MAC-SDU media access control sublayer) receive, and these a plurality of MAC-SDU are integrated, further additional MAC control information, further additional header H is used as 1 MAC-PDU and sends to layer 1.In layer 1, the MAC-PDU that sends from media access control sublayer with wireless transmission.
On the other hand, at receiver side, layer 1 MAC-PDU that receives sent in the MAC entity, and the MAC-PDU that the MAC entity will receive is assigned to the MAC-SDU of each LCH and sends to the RLC entity of each LCH.
In addition; in this Fig. 2; although understand the situation of normal transmitting-receiving; but at the HARQ(that consists of the MAC entity with reference to Fig. 1) in; by CRC(Cyclic Redundancy Check; cyclic redundancy check (CRC)) receive and normally still receive abnormal verification, send ACK(Acknowledgment to transmission source when normal (CRC-OK)), when receiving abnormal (CRC-NG) by transmission NACK(Negatie Acknowledgement) carry out re-send request may.
Fig. 3 means the figure of data flow of the loopback of the ACK, the NACK that comprise receiver side HARQ and carry out.
Herein, the HARQ of transmitter side sends control part and carries out work, and these 2 MAC-PDU of MAC-PDU# 1 and MAC-PDU# 2 are sent to receiver side.Receive this 2 MAC-PDU at receiver side, carry out the CRC check to this each MAC-PDU that receives in the HARQ of receiver side receives control part.The result of this CRC check thinks that MAC-PDU# 1 receives abnormal (CRC-NG), and send NACK to transmitter side this moment, and in the HARQ of transmitter side transmission control part, when receiving NACK, carries out the repeating transmission of this identical MAC-PDU# 1 and control.At transmitter side, management has sent the moment of MAC-PDU# 1, and can identify this NACK from the time of reception of this NACK when receiving NACK is the NACK which MAC-PDU of request retransmits.Therefore, do not send the identifier of the abnormal MAC-PDU of reception at the receiver side of MAC-PDU, and only by sending NACK, can know to have occured to send extremely in the transmitter side of this MAC-PDU in which MAC-PDU.
About the MAC-PDU# 2 that sends from transmitter side after MAC-PDU# 1, when receiving normal (CRC-OK), HARQ receives control part this MAC-PDU# 2 is sent to MAC-PDU determination processing section, sends ACK to transmitter side simultaneously.Receive the transmitter side of this ACK, do not recognize and need to control about the repeating transmission of MAC-PDU# 2, send the MAC-PDU(that next should send and be MAC-PDU#n herein).
In MAC-PDU determination processing section, judge from this HARQ to receive the MAC-PDU# 2 of control part reception as being the PDU of normal format or the PDU of abnormal form.
Fig. 4 means the schematic diagram of the determination processing that the form of the PDU in MAC-PDU determination processing section is normal/abnormal.
As mentioned above, in HARQ receives control part, send ACK to transmitter side when the CRC check result is judged as to receive when normal, simultaneously this MAC-PDU is sent to MAC-PDU determination processing section.In MAC-PDU determination processing section, when receiving control part from HARQ and receive MAC-PDU, the form of judging this MAC-PDU is normal or abnormal.
For example exemplify following situation as incorrect form.
(1) identifier of LCH is extraneous situation;
(2) head is masked as ON than regulation many (in E(Extension)) situation;
(3) summation of the Length information in the head situation longer than the MAC-PDU that receives;
(4) identifier of MAC control information is extraneous situation;
(5) situation that the identifier of MAC control information is different from Length etc.
In MAC-PDU determination processing section, judge that this MAC-PDU is normal format or incorrect form, be assigned to the MAC-SDU of each LCH and send to the RLC entity (with reference to Fig. 2) of each LCH when being normal format, but when being incorrect form, this MAC-PDU is dropped.At this moment, do not implement to retransmit control in the MAC entity.As mentioned above, owing to not retransmitting control in the RLC entity, therefore when not receiving the RLC-PDU that this RLC entity should receive, from RLC solid generation re-send request may, but existence condition in the enforcement that the repeating transmission in the RLC entity is controlled can not be implemented immediately to retransmit and control.
Then, as the technology related with the present invention, the MIMO(Multiple-Input Maltiple-Output that uses a plurality of antennas to communicate is described, multiple-input and multiple-output) summary.
Fig. 5 means the block diagram of the summary of the dispensing device that adopts MIMO and receiving system, and Fig. 6 means the figure of the data flow when adopting MIMO.
As shown in Figure 2, the MAC-PDU of transmitter side generates in handling part 11, the RLC-PDU(MAC-SDU that comprehensively receives from each RLC) generate MAC-PDU.This MAC-PDU generates a plurality of according to the generation that should send data, but has represented MAC-PDU# 1 and these 2 MAC-PDU of MAC-PDU# 2 as representative in this Fig. 5, Fig. 6.MAC-PDU generates MAC-PDU that handling part 11 generates and sends control part 12 through HARQ and be input to layer 1 transmission processing section 13, each MAC-PDU is distributed a plurality of (being made as 2 as an example herein) antenna 14a, 14b, and share transmission by these 2 antenna 14a, 14b.
At receiver side, the MAC-PDU that sends from 2 antenna 14a, 14b of transmitter side receives and sends to layer 1 Return Reception Dept. 23 by 2 antenna 24a, 24b.In Fig. 6, with dual-mode antenna to being called the MIMO antenna, and according to every pair with; 1,, ﹠amp; 2 represent.
The MAC-PDU that is received by a plurality of antenna 24a, 24b by layer 1 Return Reception Dept. 22 of receiver side receives control part 22 according to HARQ to carry out the transmission of CRC check and NACK, ACK and sends to MAC-PDU determination processing section 21, in MAC-PDU determination processing section 21, judge above-mentioned form normal/incorrect, be assigned to the MAC-SDU of each LCH and send to each RLC entity when normal format.The MAC-PDU of incorrect form abandon by MAC-PDU determination processing section 21.
As mentioned above, MIMO is the technology of using a plurality of antennas to walk abreast and receive and dispatch, can carry out broadband high-speed communication by using a plurality of antennas.
Non-patent literature 1:http: //www.3gpp.org/
In the situation of above-mentioned communication protocol, have problem as described below: the form of the MAC-PDU that receives in the MAC-PDU of receiver side determination processing section is normal or abnormal judgement, and when being abnormal form, this MAC-PDU is dropped.Require the repeating transmission control in the RLC entity to carry out obtaining of these data that abandon, but as mentioned above, the repeating transmission in the RLC entity is controlled and can not be implemented immediately, needs the time till re-send request may, thereby cause whole total throughout to reduce.
Summary of the invention
The object of the invention is to, a kind of radio communication device, radio communication control apparatus, wireless communications method and wireless communication control method of realizing that total throughout improves is provided in view of the above problems.
Realize the 1st radio communication device in the radio communication device of the present invention of above-mentioned purpose, this radio communication device comes the communication protocol of transceiving data with the additional data check digit, it is characterized in that, this radio communication device comprises: acceptance division, and it is from the other radio communication device receive data of transmission source; The receive data detection unit, its data to receiving are carried out data check with the data check position of these data, judge whether mistake of these data; The reception result sending part, when it is wrong in result of determination, abandon data, the re-send request may of these data is sent to the other radio communication device of transmission source, when being not mistake, data are sent to the other radio communication device of transmission source in result of determination for the normal meaning; Form detection unit, the form of its decision data are normal or incorrect, are being judged to be when normal, data handover are given the processing of regulation; And retransmission requesting section, its form in data is judged as when incorrect, abandons this data, requires the reception result sending part to carry out the re-send request may of these data.
The 1st radio communication device of the present invention judges that the form of the data that receive is normal or incorrect; and have when being judged to be when incorrect; abandon this data; the retransmission requesting section of above-mentioned reception result sending part is carried out the re-send request may requirement of these data; therefore carry out immediately re-send request may at the form of data when being incorrect, improved the throughput of communication.
Herein, the communication protocol of above-mentioned the 1st radio communication device typically comprises MAC(Medium Access Control) agreement, above-mentioned data check is CRC(Cyclic Redundancy Check), the processing of afore mentioned rules is RLC(Radio Link Control).
And, realize the 2nd radio communication device in the radio communication device of the present invention of above-mentioned purpose, this radio communication device is received and dispatched the communication protocol of the data that comprise communication control information with the additional data check digit, it is characterized in that, this radio communication device comprises: acceptance division, and it is from the other radio communication device receive data of transmission source; Sending part, it sends data to the other radio communication device that sends the destination; The receive data detection unit, its data to receiving are carried out data check with the data check position of these data, and whether decision data mistake; The reception result sending part, when it is wrong in result of determination, abandon data, the re-send request may of these data is sent to the other radio communication device of transmission source, when being not mistake, data are sent to the other radio communication device of transmission source in result of determination for the normal meaning; Form detection unit, the form of its decision data are normal or incorrect, are being judged to be when normal, data handover are given the processing of regulation; And retransmission requesting section, its form in data is judged as when incorrect, abandons data, enrolls re-send request may and requires sending part to carry out the transmission of data in the communication control information of the data of the other radio communication device that sends to transmission source.
The form of the 2nd radio communication device decision data of the present invention is normal or incorrect; and has a retransmission requesting section; being used for form in data is judged as when incorrect; abandon this data; enroll re-send request may and require the retransmission requesting section of sending part to carry out the transmission of these data in the communication control information of the data that send to this transmission source; therefore carry out rapidly the re-send request may of data at the communication control information of data when being incorrect, improve the throughput of communication.
Herein, in above-mentioned the 2nd radio communication device, retransmission requesting section preferably enroll in the communication control information of the data of the other radio communication device that sends to transmission source comprise the data that receive the time of reception information re-send request may come the requirement sending part to carry out the transmission of data.
The delivery time that sends data to the transmission source of sending incorrect data is not uniformly determined, therefore by enroll the information time of reception that comprises incorrect data in the communication control information of the data that will send to this transmission source, can easily determine this incorrect data in sending the transmission source of incorrect data.
And, above-mentioned the 2nd radio communication device preferably also has a plurality of antennas, use these a plurality of antennas to carry out MIMO (Multiple-Input Multiple-Output) communication, retransmission requesting section is enrolled the re-send request may that the information time of reception that not only comprises the data that receive also comprises the antenna identifying information in the communication control information of the data of the other radio communication device that sends to transmission source, require sending part to carry out the transmission of data.
In the situation that adopt the radio communication device of MIMO technology, use a plurality of antennas to carry out concurrently radio communication, therefore be programmed into communication control information by not only comprising the re-send request may that above-mentioned time of reception, information also comprised the antenna identifying information of the antenna of determining to receive incorrect data, in the transmission source that sends this incorrect data, can by these information and antenna identifying information, easily determine the incorrect data of this transmission time of reception.
The communication protocol of the 2nd radio communication device typically comprises MAC(Medium Access Control) agreement, above-mentioned data check is CRC(Cyclic Redundancy Check), above-mentioned communication control information is the MAC control information, and the processing of afore mentioned rules is RLC(Radio Link Control).
And, in any one of above-mentioned the 1st radio communication device and the 2nd radio communication device, when the communication control information that preferred above-mentioned retransmission requesting section comprises in retransmitting the data of coming is identical content incorrect, the re-send request may of these data no longer.
Identical when incorrect when comprising in the data of retransmitting, can not eliminate in transmission source that this is incorrect, even carry out re-send request may, the possibility that can obtain to eliminate these incorrect data is also very low again, only cause increasing the traffic, therefore preferably no longer carry out re-send request may.
And, realize the 1st radio communication control apparatus in the radio communication control apparatus of the present invention of above-mentioned purpose, this radio communication control apparatus is used for radio communication device and controls communication, this radio communication device comes the communication protocol of transceiving data with the additional data check digit, and have acceptance division and a reception result sending part, the 1st radio communication control apparatus is characterised in that, this radio communication control apparatus comprises: the receive data detection unit, its data to receiving, data check is carried out in data check position with these data, judges whether mistake of these data; Reception result sends instruction unit, when it is wrong in result of determination, abandon data, indication reception result sending part, make its re-send request may with these data send to the other radio communication device of transmission source, when being not mistake, indication reception result sending part makes it these data be sent to the other radio communication device of transmission source for the normal meaning in result of determination; Form detection unit, the form of its decision data are normal or incorrect, are being judged to be when normal, data handover are given the processing of regulation; And retransmission requesting section, its form in data is judged as when incorrect, abandons this data, requires the reception result sending part to carry out the re-send request may of these data.
and, realize the 2nd radio communication control apparatus in the radio communication control apparatus of the present invention of above-mentioned purpose, this radio communication control apparatus is used for radio communication device and controls communication, this radio communication device is received and dispatched the communication protocol of the data that comprise communication control information with the additional data check digit, and have acceptance division and sending part and a reception result sending part, the 2nd radio communication control apparatus is characterised in that, this radio communication control apparatus comprises: the receive data detection unit, its data to receiving, data check is carried out in data check position with these data, judge whether mistake of these data, reception result sends instruction unit, when it is wrong in result of determination, abandon data, indication reception result sending part, make its re-send request may with these data send to the other radio communication device of transmission source, when being not mistake, indication reception result sending part makes it these data be sent to the other radio communication device of transmission source for the normal meaning in result of determination, form detection unit, the form of its decision data are normal or incorrect, are being judged to be when normal, data handover are given the processing of regulation, and retransmission requesting section, its form in data is judged as when incorrect, abandons this data, requires to enroll re-send request may in this sending part sends to the communication control information of data of other radio communication device of transmission source.
And, realize the 1st wireless communications method in the wireless communications method of the present invention of above-mentioned purpose, this wireless communications method has used radio communication device, this radio communication device comprises acceptance division, receive data detection unit, reception result sending part, form detection unit and retransmission requesting section, and come the communication protocol of transceiving data with the additional data check digit, this wireless communications method is characterised in that, this wireless communications method comprises: receiving step, use acceptance division, from the other radio communication device receive data of transmission source; The receive data determination step uses the receive data detection unit, to the data that receive, carries out data check with the data check position of these data, and whether decision data mistake; The reception result forwarding step uses the reception result sending part, when result of determination is mistake, abandon data, the re-send request may of these data is sent to the radio communication device of transmission source, when being not mistake, data are sent to the radio communication device of transmission source in result of determination for the normal meaning; The form determination step, using form detection unit, the form of decision data are normal or incorrect, are being judged to be when normal, data handover are given the processing of regulation; And the retransmission requesting step, use retransmission requesting section, be judged as when incorrect at the form of data, abandon this data, require the reception result sending part to carry out the re-send request may of these data.
and, realize the 2nd wireless communications method in the wireless communications method of the present invention of above-mentioned purpose, this wireless communications method has used radio communication device, this radio communication device comprises acceptance division, sending part, the receive data detection unit, the reception result sending part, form detection unit and retransmission requesting section, and receive and dispatch the communication protocol of the data that comprise communication control information with the additional data check digit, this wireless communications method is characterised in that, this wireless communications method comprises: receiving step, use acceptance division, other radio communication device receive data from transmission source, the receive data determination step uses the receive data detection unit, to the data that receive, carries out data check with the data check position of these data, judges whether mistake of these data, the reception result forwarding step, use the reception result sending part, when result of determination is mistake, abandon data, the re-send request may of these data is sent to the other radio communication device of transmission source, when being not mistake, data are sent to the radio communication device of transmission source in result of determination for the normal meaning, the form determination step, using form detection unit, the form of decision data are normal or incorrect, are being judged to be when normal, data handover are given the processing of regulation, the retransmission requesting step is used retransmission requesting section, is judged as when incorrect at the form of data, abandons data, enrolls re-send request may in the communication control information of the data of the radio communication device that sends to transmission source, requires sending part to carry out the transmission of these data, and use sending part to send the step of the data with the communication control information that has enrolled re-send request may to the radio communication device of transmission source.
and, realize the 1st wireless communication control method in the wireless communication control method of the present invention of above-mentioned purpose, this wireless communication control method has used the radio communication control apparatus that is used for radio communication device and controls communication, this radio communication device comes the communication protocol of transceiving data with the additional data check digit, and have acceptance division and a reception result sending part, this wireless communication control method is characterised in that, this wireless communication control method comprises: the receive data determination step, to the described data that receive, data check is carried out in data check position with these data, whether decision data mistake, reception result sends the indication step, when result of determination is mistake, abandon data, indication reception result sending part, make its re-send request may with these data send to the other radio communication device of transmission source, when being not mistake, indication reception result sending part makes it data be sent to the other radio communication device of transmission source for the normal meaning in result of determination, form determination step, the form of decision data are normal or incorrect, are being judged to be when normal, data handover are given the processing of regulation, and the retransmission requesting step, be judged as when incorrect at the form of data, abandon data, require the reception result sending part to carry out the re-send request may of these data.
and, realize the 2nd wireless communication control method in the wireless communication control method of the present invention of above-mentioned purpose, this wireless communication control method has used the radio communication control apparatus that is used for radio communication device and controls communication, this radio communication device is received and dispatched the communication protocol of the data that comprise communication control information with the additional data check digit, and have acceptance division and sending part and a reception result sending part, this wireless communication control method is characterised in that, this wireless communication control method comprises: the receive data determination step, to the data that receive, data check is carried out in data check position with these data, whether decision data mistake, reception result sends the indication step, when result of determination is mistake, abandon data, indication reception result sending part, make its re-send request may with these data send to the other radio communication device of transmission source, when being not mistake, indication reception result sending part makes it data be sent to the other radio communication device of transmission source for the normal meaning in result of determination, form determination step, the form of decision data are normal also incorrect, being judged to be when normal, data handover are given the processing of stipulating, and the retransmission requesting step, use retransmission requesting section, be judged as when incorrect at the form of data, abandon data, require to enroll re-send request may in sending part sends to the communication control information of data of radio communication device of transmission source.
Herein, about radio communication control apparatus, wireless communication control method and wireless communication control method, main form has been described, but for radio communication control apparatus of the present invention, wireless communication control method and wireless communication control method, as long as its character is constant, comprise the form of ownership with the form responding that the radio communication device of the invention described above is put down in writing.
Description of drawings
Fig. 1 is the agreement pie graph of layer 2.
Fig. 2 means the figure of an example of the data flow of the PDU that has added control information.
Fig. 3 means the figure of data flow of the loopback of the ACK, the NACK that comprise receiver side HARQ.
Fig. 4 means the schematic diagram of normal/abnormal determination processing of the form of the PDU in MAC-PDU determination processing section.
Fig. 5 means the block diagram of the summary of the dispensing device that adopted MIMO and receiving system.
Fig. 6 means the figure of the data flow when having adopted MIMO.
Fig. 7 means the schematic diagram of an example of the communication system of having used one embodiment of the present invention.
Fig. 8 means that the HARQ in the 1st execution mode of the present invention receives the block diagram of control part and MAC-PDU determination processing section.
Fig. 9 means the figure of the data flow in execution mode shown in Figure 8.
Figure 10 means the block diagram of the structure in media access control sublayer in the 2nd execution mode of the present invention, receiver side.
Figure 11 means the figure of the data flow in execution mode shown in Figure 10.
Embodiment
Embodiments of the present invention below are described.
Fig. 7 means the schematic diagram of an example of the communication system of having used one embodiment of the present invention.
In this Fig. 7, expressed portable telephone 100 and and this portable telephone 100 between carry out the base station 200 of radio communication.In addition, in actual communication system, there are a plurality of portable telephones and a plurality of base station, also have a plurality of switches etc., but herein, only represented the structure of the irreducible minimum that the explanation present embodiment is required.
Carry out radio communication between portable telephone 100 and base station 200, when portable telephone 100 becomes transmitter side, base station 200 becomes receiver side, and when base station 200 becomes transmitter side, portable telephone 100 becomes receiver side.Namely, portable telephone 100 and base station 200 all have the structure of transmitter side of following explanation and the structure of receiver side.
In above-mentioned prior art, exist in the form of received MAC-PDU and abandon this MAC-PDU when incorrect, require re-send request may to RLC, but in present embodiment, when existing in the form of this MAC-PDU when incorrect, as following 2 examples that illustrate, make and carry out re-send request may on media access control sublayer, improve thus the throughput of communication.Be only that re-send request may this point on media access control sublayer is different from above-mentioned prior art, other points are directly to have quoted above-mentioned explanation of the prior art.
Namely, about the structure of block diagram of radio communication device of the present invention, comprise above-mentioned transmitter side shown in Figure 5 and receiver side both sides' structure as an example, and with above-mentioned prior art in difference be only the point of following explanation.
Fig. 8 means that the HARQ in the 1st execution mode of the present invention receives the block diagram of control part and MAC-PDU determination processing section.
When receiving the MAC-PDU that sends from transmitter side, in the HARQ of receiver side receives the receive data detection unit 221 of control part 22, received MAC-PDU is carried out CRC check, when being normal reception (CRC-OK), this MAC-PDU is sent to MAC-PDU determination processing section 21, simultaneously, generate ACK and send request in ACK/NACK sending part 222, carry out from the transmission of ACK/NACK sending part 222 via the ACK of layer 1.Wherein, even the transmission request of 222 generation ACK from receive data detection unit 221 to the ACK/NACK sending part, as described below, ACK/NACK sending part 222 does not carry out the transmission of ACK sometimes, and sends NACK.
When being judged to be reception abnormal (CRC-NG) by receive data detection unit 221,222 generate the transmission request of NACK from receive data detection unit 221 to the ACK/NACK sending part, and pass through layer 1 to transmitter side transmission NACK from ACK/NACK sending part 222.Delivery time at transmitter side managing MAC-PDU, and mainly illustrated when receiving ACK/NACK, can be the ACK/NACK to which PDU according to the identification time of reception of ACK/NACK, when in the situation that MIMO, also still send ACK/NACK from the antenna identical with the antenna of receiver side reception, therefore at the transmitter side of PDU, can be ACK/NACK to which MAC-PDU according to delivery time and the antenna that receives identification.
Herein, be judged to be normal reception (CRC-OK) and send to the MAC-PDU of MAC-PDU determination processing section 21 in receive data detection unit 221, this time be determined the PDU of normal format or the PDU of incorrect form in this MAC-PDU determination processing section 21, when being the PDU of normal format, being assigned to the SDU of each LCH and sending to the RLC entity (with reference to Fig. 2) of each LCH.
On the other hand, when being judged to be when being the PDU of incorrect form, abandon this PDU in MAC-PDU determination processing section 21.Herein with above-mentioned prior art in identical, but in the present embodiment, when MAC-PDU determination processing section 21 is judged to be when being the PDU of incorrect form, abandoning this PDU, receive simultaneously the transmission of the ACK/NACK sending part 222 request NACK of control part 22 to HARQ, and ACK/NACK sending part 222 is rewritten the transmission request of the ACK that brings from receive data detection unit 221.Thereby ACK/NACK sending part 222 is received the request from MAC-PDU determination processing section 21, sends NACK via layer 1 to transmitter side.
Fig. 9 means the figure of the data flow in execution mode shown in Figure 8.
In the example of expression, the base station as transmitter side, is sent in herein as MAC-PDU# 1 and these 2 MAC-PDU of MAC-PDU# 2 of representing, by the portable telephone reception as receiver side from this transmitter side herein.At receiver side, in layer 2 is more specifically normal reception (CRC-OK) or abnormal receive (CRC-NG) for judging in media access control sublayer.
, at first MAC-PDU# 1 is carried out this judgement herein, owing to being normal reception (CRC-OK), therefore will first send ACK to transmitter side herein.Wherein, ACK not yet is sent out, and during this period, the form of judging this MAC-PDU# 1 is normal or incorrect; when the form of this MAC-PDU# 1 when being incorrect, will be owing to being normal reception (CRC-OK) and the ACK that will send is rewritten as NACK and send to transmitter side.Therefore at transmitter side, ability is to the MAC-PDU# 1 of receiver side repeating transmission corresponding to this NACK after receiving NACK.
About MAC-PDU# 2, due to receive also normal, form is also normal, therefore sends ACK to transmitter side, do not retransmit for this MAC-PDU# 2 at transmitter side, and send the MAC-PDU#n that does not send.
Thereby, be not only when receiving abnormal (CRC-NG), even when receiving normal (CRC-OK) and its PDU and be the PDU of incorrect form, also still carry out re-send request may in media access control sublayer, do not wait for from the re-send request may of RLC sublayer and carry out re-send request may, therefore shorten the time till the re-send request may, improved the throughput of entire system.
In addition, herein with the base station as transmitter side, portable telephone is illustrated as receiver side, be that the situation of receiver side is also identical but portable telephone is transmitter side, base station.
In the layer 1 of transmitter side, the temporary transient MAC-PDU that first sends that preserves when the NACK that receives this MAC-PDU that first sends, retransmits the MAC-PDU of this preservation.Therefore, in the situation that the 1st execution mode, for the layer 1 that comprises transmitter side interior, be effective with respect to this layer 1 for the mistake of sneaking into before the MAC-PDU determination processing of receiver side, but the process that generates MAC-PDU at transmitter side, the MAC-PDU that maybe will generate are sent to when sneaking into mistake in layer 1 process of transmitter side in MAC-PDU, no matter retransmit how many times also of no avail.Therefore, in receiver side MAC-PDU determination processing, when the form of retransmitting the MAC-PDU that comes by sending NACK be with retransmit before the identical incorrect form of the form of MAC-PDU the time, no longer carry out re-send request may.Thus, can not repeat repeating transmission for no reason and the Resource Supply of communication be given other PDU.
Then, the 2nd execution mode of the present invention is described.
Figure 10 means the block diagram of the structure in media access control sublayer in the 2nd execution mode of the present invention, receiver side.
The HARQ of receiver side (being made as portable telephone herein) receives in control part 22, with above-mentioned same, the MAC-PDU that receives is carried out CRC check, and according to normal reception (CRC-OK) or reception abnormal (CRC-NG), respectively ACK or NACK are sent to transmitter side (base station).The ACK/NACK of this moment be according to normal receive (CRC-OK) or receive abnormal (CRC-NG) send, do not consider form normally/incorrect.
When HARQ received control part 22 and is judged to be normal reception (CRC-OK), this MAC-PDU was sent to MAC-PDU determination processing section 21.At this moment, receive time information that control part 22 will represent to receive the moment of this MAC-PDU, be to send to MAC-PDU determination processing section 21 together with the reception information that comprises the MIMO aerial information of identifying the antenna that receives when utilizing MIMO from HARQ.In MAC-PDU determination processing section 21, investigate the form of the MAC-PDU of this reception, and judge it is normal format or incorrect form.When being normal format, this MAC-PDU is decomposed into the MAC-SDU=RLC-PDU of each LCH, and sends to the RLC entity of each LCH.
On the other hand, when MAC-PDU determination processing section 21 is judged to be incorrect form, abandon the MAC-PDU that this is judged to be incorrect form, follow the re-send request may of reception information (time information and MIMO aerial information) to be sent to MAC control information making handling part 31.Not expressing in Fig. 5 although handling part 31 is made in this MAC control information, be responsible for the making of the MAC control information of the MAC-PDU of transmission from portable telephone to the base station, is the structural element in media access control sublayer.
, can make various MAC control informations according to each needs constantly herein, but as the feature of present embodiment, make in this MAC control information and make the MAC control information that has embedded the re-send request may that receives from MAC-PDU determination processing section 21 in handling part 31.Include reception information (time information and MIMO aerial information) in re-send request may in being embedded into this MAC control information.The MAC-PDU that the MAC control information that this MAC control information making handling part 31 generates is sent in same portable telephone generates handling part 11.In MAC-PDU generates handling part 11, to the RLC-PDU(MAC-SDU that receives from the RLC entity) carry out comprehensive, also generate simultaneously from the MAC control information make MAC control information that handling part 31 receives or, generate the MAC-PDU that has added head further.The MAC-PDU that this MAC-PDU generates handling part 11 generations is sent to HARQ transmission control part 12, and then sends to the base station via the layer 1 of this portable telephone.In the control information of base station side with reference to the MAC-PDU that receives, identify the situation that re-send request may is arranged in this control information, and then identify the MAC-PDU that should retransmit by the additional reception information of this re-send request may (time information and MIMO aerial information), and retransmit this MAC-PDU.At this moment, in base station side, be not saved to the MAC-PDU that receives before ACK/NACK, again received structure from the RLC of each LCH of this base station side and should retransmit the required RLC-PDU(MAC-SDU of MAC-PDU), and regenerate this MAC-PDU and retransmit.
Therefore, in the situation that the 2nd execution mode, the possibility that also can save the mistake of sneaking in layer 1 the process of sending to this transmitter side at the process of the MAC-PDU that generates transmitter side, the MAC-PDU that maybe will generate is high.Even but in this situation, when the MAC-PDU that retransmits be the incorrect form identical with MAC-PDU before repeating transmission, preferably no longer carry out re-send request may.
Figure 11 means the figure of the data flow in execution mode shown in Figure 10.
Represented that as representative MAC-PDU#D1 and these 2 MAC-PDU of MAC-PDU#D2 send to the situation as the portable telephone of receiver side from the base station as transmitter side herein.In the media access control sublayer of receiver side, carry out the transmission of CRC check, ACK/NACK, but herein about this point, due to identical with prior art (with reference to Fig. 3), omit diagram at this.
In the media access control sublayer of receiver side, when after CRC check being normal reception (CRC-OK), then investigate the form of the MAC-PDU of this reception, judge that this form is normal or incorrect.Be judged to be when normal, identical with the situation of prior art or above-mentioned the 1st execution mode.
On the other hand, when this MAC-PDU that receives is judged as the PDU of incorrect form, abandon this MAC-PDU, and this time in the situation that this identical portable telephone embeds the re-send request may of having added the information that receives in becoming the MAC control information of the MAC-PDU that transmitter side consists of, and the MAC-PDU#U1 in this MAC-PDU(Figure 11) sent to the base station, wherein, this reception information comprises the MIMO aerial information that the time information and being used in the moment that expression receives the MAC-PDU of incorrect form determines to receive the antenna of this MAC-PDU.
In the base station, the MAC control information of the MAC-PDU#U1 that this receives is analyzed, and recognizes reply MAC-PDU#D1 and retransmit, and by being retransmitted to portable telephone after this MAC-PDU#D1 regeneration.
In the situation of the 2nd execution mode, when incorrect form, also still carry out re-send request may in media access control sublayer, improve the throughput of entire system.
Claims (13)
1. radio communication device, this radio communication device communication protocol of coming transceiving data with the data check position,
This radio communication device is characterised in that,
Described radio communication device comprises:
Acceptance division, its other radio communication device from transmission source receives described data;
The receive data detection unit, it is to the described data that receive, and carries out data check with described data check position, judges whether described data are mistake;
The reception result sending part, it is in the described result of judging during as mistake, abandon described data, the re-send request may of described data is sent to the described other radio communication device of described transmission source, when being not mistake, described data are sent to the described other radio communication device of described transmission source in the described result of judging for the normal meaning; And
The form detection unit, its form of judging described data is incorrect or normal, when being normal, its result is transferred to the processing of regulation at the described form that is judged to be described data; And
Retransmission requesting section, its described form in described data are judged as when incorrect, abandon described data, require described reception result sending part to carry out repeating transmission to the reception result of described data.
2. radio communication device according to claim 1, is characterized in that,
The described communication protocol of described radio communication device comprises medium access control protocol MAC, and described data check is cyclic redundancy check (CRC), and the processing of described regulation is that Radio Link is controlled RLC.
3. radio communication device according to claim 1, is characterized in that,
Described radio communication device also comprises sending part, and this sending part sends described data to the other radio communication device that sends the destination,
Described retransmission requesting section
Be judged as when incorrect at the form of described data, abandon described data, replace requiring described reception result sending part to carry out repeating transmission to the reception result of described data, and enroll re-send request may in the communication control information of the data of the other radio communication device that sends to described transmission source, require described sending part to carry out the transmission of these data.
4. radio communication device according to claim 3, it is characterized in that, described retransmission requesting section also enroll in the communication control information of the data of the other radio communication device that sends to described transmission source comprise the described data that receive the time of reception information re-send request may come the described sending part of requirement to carry out the transmission of these data.
5. radio communication device according to claim 4, is characterized in that,
Described radio communication device also comprises a plurality of antennas, uses these a plurality of antennas to carry out multiple-input and multiple-output MIMO communication,
Described retransmission requesting section is enrolled the re-send request may that the information time of reception that not only comprises the described data that receive also comprises the antenna identifying information in the communication control information of the data of the other radio communication device that sends to described transmission source, require described sending part to carry out the transmission of these data.
6. the described radio communication device of any one according to claim 3 to 5, it is characterized in that, the described communication protocol of described radio communication device comprises medium access control protocol MAC, described data check is cyclic redundancy check (CRC), described communication control information is the MAC control information, and the processing of described regulation is that Radio Link is controlled RLC.
7. the described radio communication device of any one according to claim 1 to 6, is characterized in that, when described retransmission requesting section has identical incorrect content at the form of retransmitting the data of coming, no longer carries out the re-send request may of these data.
8. radio communication control apparatus, this radio communication control apparatus is used for radio communication device and controls communication, and described radio communication device uses the data check position to come the communication protocol of transceiving data, and comprises acceptance division and reception result sending part, this radio communication control apparatus is characterised in that
Described radio communication control apparatus comprises:
The receive data detection unit, it is to the described data that receive, and carries out data check with described data check position, judges whether described data are mistake;
Reception result sends instruction unit, it is in the described result of judging during as mistake, abandon described data, indicate described reception result sending part, make its re-send request may with these data send to the other radio communication device of transmission source, when being not mistake, indicate described reception result sending part in the described result of judging, make it described data be sent to the other radio communication device of described transmission source for the normal meaning;
The form detection unit, its form of judging described data is incorrect or normal, when being normal, its result is transferred to the processing of regulation at the described form that is judged to be described data; And
Retransmission requesting section, its described form in described data are judged as when incorrect, abandon described data, require described reception result sending part to carry out repeating transmission to the reception result of described data.
9. radio communication control apparatus according to claim 8, is characterized in that,
Described radio communication device also comprises sending part,
Described retransmission requesting section
Be judged as when incorrect at the form of described data, abandon described data, replace requiring described reception result sending part to carry out repeating transmission to the reception result of described data, and require to enroll re-send request may in described sending part sends to the communication control information of data of other radio communication device of described transmission source.
10. wireless communications method, this wireless communications method has used radio communication device, this radio communication device comprises acceptance division, receive data detection unit, reception result sending part, form detection unit and retransmission requesting section, and use the communication protocol of coming transceiving data with the data check position, this wireless communications method is characterised in that
This wireless communications method comprises:
Receiving step uses described acceptance division, from the other described data of radio communication device reception of transmission source;
The receive data determination step uses described receive data detection unit, to the described data that receive, carries out data check with described data check position, judges whether described data are mistake;
The reception result forwarding step, use described reception result sending part, in the described result of judging during as mistake, abandon described data, the re-send request may of described data is sent to the radio communication device of described transmission source, when being not mistake, described data are sent to the radio communication device of described transmission source in the described result of judging for the normal meaning;
The form determination step uses described form detection unit, judges that the form of described data is incorrect or normal, when being normal, its result is transferred to the processing of regulation at the described form that is judged to be described data; And
The retransmission requesting step is used described retransmission requesting section, is judged as when incorrect at the form of described data, abandons described data, requires described reception result sending part to carry out repeating transmission to the reception result of described data.
11. wireless communications method according to claim 10 is characterized in that,
Described radio communication device also comprises sending part,
This wireless communications method comprises that also the described sending part of use sends the step of the data with the communication control information that has enrolled re-send request may to the radio communication device of described transmission source,
In described retransmission requesting step, use described retransmission requesting section, be judged as when incorrect at the form of described data, abandon described data, replace requiring described reception result sending part to carry out repeating transmission to the reception result of described data, and enroll re-send request may in the communication control information of the data of the radio communication device that sends to described transmission source, require described sending part to carry out the transmission of these data.
12. wireless communication control method, this wireless communication control method has used the radio communication control apparatus that is used for radio communication device and controls communication, this radio communication device uses the data check position to come the communication protocol of transceiving data, and comprises acceptance division and reception result sending part
This wireless communication control method is characterised in that,
Described wireless communication control method comprises:
The receive data determination step to the described data that receive, carries out data check with described data check position, judges whether described data are mistake;
Reception result sends the indication step, in the described result of judging during as mistake, abandon described data, indicate described reception result sending part, make its re-send request may with these data send to the other radio communication device of described transmission source, when being not mistake, indicate described reception result sending part in the described result of judging, make it described data be sent to the other radio communication device of described transmission source for the normal meaning;
The form determination step judges that the form of described data is incorrect or normal, when being normal, its result is transferred to the processing of regulation at the described form that is judged to be described data; And
The retransmission requesting step is judged as when incorrect at the form of described data, abandons described data, requires described reception result sending part to carry out repeating transmission to the reception result of described data.
13. wireless communication control method according to claim 12 is characterized in that,
Described radio communication device also comprises sending part,
This wireless communication control method comprises that also the described sending part of use sends the step of the data with the communication control information that has enrolled re-send request may to the radio communication device of described transmission source,
In described retransmission requesting step, use described retransmission requesting section, be judged as when incorrect at the form of described data, abandon described data, replace requiring described reception result sending part to carry out repeating transmission to the reception result of described data, and require to enroll re-send request may in described sending part sends to the communication control information of data of radio communication device of described transmission source.
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| CN201310044496.8A CN103152147B (en) | 2007-10-03 | 2007-10-03 | Radio communication device, radio communication control apparatus |
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| CN2007801009410A CN101816143B (en) | 2007-10-03 | 2007-10-03 | Radio communication device, radio communication control device, radio communication method, radio communication control method |
| CN201310044496.8A CN103152147B (en) | 2007-10-03 | 2007-10-03 | Radio communication device, radio communication control apparatus |
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| US7310336B2 (en) * | 2001-05-18 | 2007-12-18 | Esa Malkamaki | Hybrid automatic repeat request (HARQ) scheme with in-sequence delivery of packets |
| CN1165129C (en) * | 2002-05-16 | 2004-09-01 | 武汉汉网高技术有限公司 | ARQ mechanism able to automatically request retransmissions for multiple rejections |
| CN101034965B (en) * | 2006-03-07 | 2010-05-12 | 华为技术有限公司 | Transmission method of the protocol data unit in the high-speed downlink packet access and its system |
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