CN103067143A

CN103067143A - Wireless communication device

Info

Publication number: CN103067143A
Application number: CN2013100263765A
Authority: CN
Inventors: 篠原千昌; 大渕一央; 清水浩利; 音成昭英; 副岛良则; 山崎美树; 冈本慎也
Original assignee: Fujitsu Ltd
Current assignee: Fujitsu Ltd
Priority date: 2007-10-03
Filing date: 2007-10-03
Publication date: 2013-04-24
Anticipated expiration: 2027-10-03
Also published as: CN103067142A; CN103067142B; CN103067143B

Abstract

The invention provides a wireless communication device, which uses a data check bit to receive and send a data communication protocol, and aims at improving the overall throughput of a system. The wireless communication device comprises a received data determination part, a received result sending part, a format determination part, and a resending requesting part, wherein the received data determination part performs data check on received data by using the data check bit, to determine whether the data are wrong; the received result sending part discards the data when the determination result shows the data are wrong, and sends a resending request for the data to another wireless communication device of a sending source, and sends the data with normal meaning to another wireless communication device when the determination result shows the data are not wrong; the format determination part determines whether the format of the data is normal or abnormal, and when the format is determined to be normal, transfers the data to a specified device for processing; and the resending requesting part discards the data when the format of the data is determined to be abnormal, and requests the received result sending part to make a resending request for the data.

Description

Radio communication device

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 come with the additional data check digit radio communication device of the communication protocol of transceiving data.

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 among this 3G, except the original 3G that in FOMA etc., adopts, communication speed portable telephone more high speed, that be called as the agreement of 3.5G or HSDPA also occurs adopting, and then also studied the agreement that is called as Super3G or 3.9G now.

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 control), 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 the 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, in layer 2 more upper, also there is layer 3, but herein owing to have direct relation to omit to illustrate 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 is the figure of an example of the data flow of the expression PDU that added control information.

In the RLC entity, to the RLC-SDU(Source Data Unit that from the PDCP entity of identical LCH, receives) 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 the 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 unusual verification, when normal (CRC-OK), send ACK(Acknowledgment to transmission source), when receiving unusual (CRC-NG) by transmission NACK(NegatieAcknowledgement) carry out re-send request may.

Fig. 3 is the figure of the data flow of the expression loopback that comprises ACK, NACK that receiver side HARQ carries 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, receive the CRC check of carrying out in the control part this each MAC-PDU that receives at the HARQ of receiver side.The result of this CRC check thinks that MAC-PDU#1 receives unusual (CRC-NG), and send NACK to transmitter side this moment, and in the HARQ of the transmitter side transmission control part, when receiving NACK, carries out the repeating transmission control of this identical MAC-PDU#1.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 and receive the identifier of unusual MAC-PDU at the receiver side of MAC-PDU, and only by sending NACK, can know in the transmitter side of this MAC-PDU, in which MAC-PDU, to have occured to send unusually.

About the MAC-PDU#2 that sends from transmitter side after the 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 about the repeating transmission control of MAC-PDU#2, send the MAC-PDU(that next should send and be MAC-PDU#n herein).

In the 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 unusual form.

Fig. 4 is the schematic diagram of the normal/abnormal determination processing of the form of the PDU in the expression MAC-PDU determination processing section.

As mentioned above, in HARQ receives control part, send ACK when the CRC check result is judged as to receive when normal to transmitter side, simultaneously this MAC-PDU is sent to MAC-PDU determination processing section.In MAC-PDU determination processing section, when receiving control part reception MAC-PDU from HARQ, the form of judging this MAC-PDU is normal or unusual.

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, when being normal format, be assigned to the MAC-SDU of each LCH and send to the RLC entity (with reference to Fig. 2) of each LCH, 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 in the RLC entity, do not retransmit control, 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 of the control of the repeating transmission in the RLC entity can not implement to retransmit control immediately.

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 is the block diagram that the summary of the dispensing device of MIMO and receiving system is adopted in expression, and Fig. 6 is the figure of the data flow of expression when adopting MIMO.

As shown in Figure 2, the MAC-PDU of transmitter side generates in the 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.The MAC-PDU that MAC-PDU generates handling part 11 generations is input to layer 1 a transmission processing section 13 through HARQ transmission control part 12, 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 is received and is sent to layer 1 Return Reception Dept. 23 by 2 antenna 24a, 24b.Among Fig. 6, with dual-mode antenna to being called the MIMO antenna, and according to every pair with; 1,, ﹠amp; 2 represent.

Layer 1 Return Reception Dept. 22 by receiver side carries out the transmission of CRC check and NACK, ACK and sends to MAC-PDU determination processing section 21 according to HARQ reception control part 22 by the MAC-PDU that a plurality of

antenna

24a, 24b receive, in MAC-PDU determination processing section 21, judge above-mentioned form normal/incorrect, when normal format, be assigned to the MAC-SDU of each LCH and send to each RLC entity.The MAC-PDU of incorrect form is abandoned 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 unusual judgement, and when being unusual 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 control in the RLC entity can not be implemented immediately, needs the time till re-send request may, thereby causes 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.

The 1st radio communication device in the radio communication device of the present invention of realization 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, the 2nd radio communication device in the radio communication device of the present invention of realization 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 require 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; in the communication control information of the data that send to this transmission source, enroll re-send request may and require the retransmission requesting section of sending part to carry out the transmission of these data; 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 in the communication control information of the data of the other radio communication device that sends to transmission source, enroll 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 in the communication control information of the data that will send to this transmission source, enrolling the information time of reception that comprises incorrect data, can in sending the transmission source of incorrect data, determine easily this 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 of the radio communication device that adopts the MIMO technology, use a plurality of antennas to carry out concurrently radio communication, therefore be programmed into communication control information by will 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, determine easily 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, the 1st radio communication control apparatus in the radio communication control apparatus of the present invention of realization above-mentioned purpose, this radio communication control apparatus is used for radio communication device and control 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, the 2nd radio communication control apparatus in the radio communication control apparatus of the present invention of realization above-mentioned purpose, this radio communication control apparatus is used for radio communication device and control 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, 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 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, the 1st wireless communications method in the wireless communications method of the present invention of realization 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, the 2nd wireless communications method in the wireless communications method of the present invention of realization 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, 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, 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, the 1st wireless communication control method in the wireless communication control method of the present invention of realization above-mentioned purpose, this wireless communication control method has used the radio communication control apparatus that is used for radio communication device and control 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, and 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, the 2nd wireless communication control method in the wireless communication control method of the present invention of realization above-mentioned purpose, this wireless communication control method has used the radio communication control apparatus that is used for radio communication device and control 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, and 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 in sending part sends to the communication control information of data of radio communication device of transmission source, to enroll re-send request may.

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, then 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. 3 is the figure of data flow of the loopback of the expression ACK, the NACK that comprise receiver side HARQ.

Fig. 4 is the schematic diagram of normal/abnormal determination processing of the form of the PDU in the expression MAC-PDU determination processing section.

Fig. 5 is the block diagram that the summary of the dispensing device of MIMO and receiving system has been adopted in expression.

Fig. 6 is the figure of the data flow of expression when having adopted MIMO.

Fig. 7 is the schematic diagram of an example that the communication system of one embodiment of the present invention has been used in expression.

Fig. 8 is the block diagram that the HARQ in expression the 1st execution mode of the present invention receives control part and MAC-PDU determination processing section.

Fig. 9 is the figure of the data flow in the expression execution mode shown in Figure 8.

Figure 10 is the block diagram of the structure in the media access control sublayer in expression the 2nd execution mode of the present invention, receiver side.

Figure 11 is the figure of the data flow in the expression execution mode shown in Figure 10.

Embodiment

Embodiments of the present invention below are described.

Among 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 the 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, base station 200 became receiver side when portable telephone 100 became transmitter side, and portable telephone 100 became receiver side when base station 200 became transmitter 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 the above-mentioned prior art, in the form of received MAC-PDU, exist and abandon this MAC-PDU when incorrect, require re-send request may to RLC, but in the present embodiment, when existing in the form of this MAC-PDU when incorrect, as following 2 examples that illustrate, so that carry out re-send request may at media access control sublayer, improve thus the throughput of communication.Only be that re-send request may this point on the 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 only be the point of following explanation.

When receiving the MAC-PDU that sends from transmitter side, receive in the receive data detection unit 221 of control part 22 at the HARQ of receiver side, 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, in ACK/NACK sending part 222, generate ACK and send request, 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 by receive data detection unit 221 when receiving unusual (CRC-NG), the 222 transmission requests that generate NACK from receive data detection unit 221 to the ACK/NACK sending part, and send NACK by layer 1 to transmitter side 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, in the situation at 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, in receive data detection unit 221, be judged to be normal reception (CRC-OK) and send to the MAC-PDU of MAC-PDU determination processing section 21, this time in this MAC-PDU determination processing section 21, be determined the PDU of normal format or the PDU of incorrect form, 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 in MAC-PDU determination processing section 21, being judged to be when being the PDU of incorrect form, abandon this PDU.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.

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 normal reception (CRC-OK) or unusual receive (CRC-NG) for judging in the media access control sublayer more specifically.

, at first MAC-PDU#1 is carried out this judgement herein, owing to be normal reception (CRC-OK), therefore will send first 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 and since 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 unusual (CRC-NG), even when receiving normal (CRC-OK) and its PDU and be the PDU of incorrect form, also still in media access control sublayer, carry out re-send request may, 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 sends first that preserves when the NACK that receives this MAC-PDU that sends first, retransmits the MAC-PDU of this preservation.Therefore, in the situation of 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, it is also of no avail no matter to retransmit how many times.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.

The HARQ of receiver side (being made as portable telephone herein) receives in the 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 unusual (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 unusual (CRC-NG) send, do not consider form normally/incorrect.

When HARQ reception control part 22 was 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 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 the 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 the 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 the 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.This MAC-PDU generates MAC-PDU that handling part 11 generates and is sent to HARQ and send 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 the MAC-PDU that should retransmit by the additional reception information of this re-send request may (time information and MIMO aerial information) identification, and retransmit this MAC-PDU.At this moment, in base station side, be not saved to the MAC-PDU that receives before the 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 of the 2nd execution mode, the possibility height 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.Even but in this situation, when the MAC-PDU that retransmits be the incorrect form identical with MAC-PDU before the repeating transmission, preferably no longer carry out re-send request may.

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, since identical with prior art (with reference to Fig. 3), diagram omitted at this.

In the media access control sublayer of receiver side, when after the 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 becoming the MAC control information of the MAC-PDU that consists of in the situation of transmitter side, this identical portable telephone embeds the re-send request may of having added the information that receives, and the MAC-PDU#U1 among 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 obtains analyzing, and recognizes reply MAC-PDU#D1 and retransmit, and by being retransmitted to portable telephone behind this MAC-PDU#D1 regeneration.

In the situation of the 2nd execution mode, when incorrect form, also still in media access control sublayer, carry out re-send request may, improve the throughput of entire system.

Claims

1. radio communication device, this radio communication device communication protocol of receiving and dispatching MAC-PDU with check digit, wherein, this MAC is MediumAccess Control, i.e. media interviews control, this PDU is Protocol Data Unit, i.e. protocol Data Unit,

This radio communication device is characterised in that,

Described radio communication device comprises:

Acceptance division, it receives described MAC-PDU from other radio communication device;

The 1st detection unit, it carries out data check to the described MAC-PDU that receives with described check digit, judges whether described MAC-PDU is mistake;

Sending part, it generates the described MAC-PDU of expression during as mistake in the described result who judges is the 1st wrong message, generates when being not mistake in the described result who judges to represent that described MAC-PDU is normal the 2nd message; And

The 2nd detection unit, its identifier of judging the MAC control information as scope outside the time, abandon described MAC-PDU.

2. radio communication device according to claim 1 is characterized in that,

The described communication protocol of described radio communication device comprises the MAC agreement, and described data check is that CRC is cyclic redundancy check (CRC).