CN101855857A - Method of automatic retransmission in wireless communication network and device thereof - Google Patents
Method of automatic retransmission in wireless communication network and device thereof Download PDFInfo
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- CN101855857A CN101855857A CN200780100784A CN200780100784A CN101855857A CN 101855857 A CN101855857 A CN 101855857A CN 200780100784 A CN200780100784 A CN 200780100784A CN 200780100784 A CN200780100784 A CN 200780100784A CN 101855857 A CN101855857 A CN 101855857A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
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Abstract
A method of automatic retransmission in source equipment of wireless communication network and device thereof are disclosed. The source equipment first receives an automatic retransmission request message from a next level network equipment; second, it retransmits the signal previously sent with an increased output power according to the automatic retransmission request message. During the process of retransmission, the source equipment adjusts its output power (increasing its output power) to retransmit the signal previously sent every time that it receives an automatic request message. Because the original equipment retransmits the signal previously sent with an increased output power, the reliability of signal retransmission is greatly increased, and average network delay time is thereby reduced.
Description
It is used for the method and apparatus technical field for carrying out autonomous retransmission in cordless communication network
The present invention relates to the apparatus and method retransmitted in cordless communication network, more particularly to cordless communication network based on HARQ to signal.Background technology
At present, cordless communication network generally uses automatic retransmission mechanism（ARQ) to solve data transmission fails the problem of.Specifically, primary network station equipment is received after the signal from the upper level network equipment instantly, and the signal can be verified.When check results are correct, the signal is forwarded to the next stage network equipment again by the next stage network equipment；When check results is mistakes, the next stage network equipment sends HARQ（ARQ) the supreme primary network station equipment of message, when the upper level network equipment receives the HARQ（ARQ) after message, the signal being previously sent is retransmitted, until the next stage network equipment receives correct transmission signal or reaches maximum number of retransmissions set in advance, the signal from the upper level network equipment received is just forwarded to the next stage network equipment again by the next stage network equipment.
Specifically, Fig. 1, which is shown in the schematic network structure Wu line Zhong Ji Wang Network according to prior art, figure, shows user equipment 1, relay station 2 and base station 3.Although it will be understood by those skilled in the art that merely illustrating a relay station in figure, multiple relay stations can be included in a particular application.More specifically, under the relay station 2 shown in Fig. 1 is operated in before decoding to repeater mode, relay station is received after the signal from user equipment 1, and the signal is verified, when check results are correct, the signal is forwarded to base station 3 by relay station 2;When check results is mistakes, relay station 2 sends HARQ（ARQ) message is to user equipment 1, when user equipment 1 receives the HARQ（ARQ) after message, the signal being previously sent is retransmitted, until relay station 2 receives correct transmission signal or reaches maximum number of retransmissions set in advance, the signal from user equipment 1 received is forwarded to base station 3 by the ability of relay station 2.It will be understood by those skilled in the art that described verification can include cyclic redundancy（CRC) verification or even-odd check, can also include other kinds of code check mode
Under the relay station 2 shown in Fig. 1 is operated in before amplification to repeater mode, relay station connects 2 and received after the signal from user equipment 1, the signal is not decoded, and base station 3 is forwarded to after being only amplified to the signal, i.e., relay station 2 is not verified to the signal from user equipment 1.After base station 3 is received from the signal that relay station 2 is forwarded, it is verified, when check results is mistakes, base station 3 sends HARQ（ARQ) message is to relay station 2, and then, relay station 2 is forwarded to user equipment 1 again, when user equipment 1 receives the HARQ（ARQ) after message, the signal being previously sent is retransmitted, just stops retransmitting the signal being previously sent until base station 3 receives correct transmission signal or reaches maximum number of retransmissions set in advance.
In the signal retransmission processes according to the cordless communication network based on HARQ of prior art, the upper level network equipment periodically increases its power output and the signal being previously sent is retransmitted, and within cycle regular time, the upper level network equipment is all that the signal being previously sent is retransmitted with identical power output.Therefore, in the case of signal to noise ratio is relatively low, within cycle regular time, the possibility that retransmission error occurs again when being retransmitted with identical power output to the signal being previously sent for the upper level network equipment is very high, so as to cause the increase of number of retransmissions, the reinforcement mouthful of the average delay time of whole network is further resulted in.The content of the invention
To solve disadvantages mentioned above of the prior art, the present invention proposes a kind of method and apparatus for being used to carry out signal based on HARQ autonomous retransmission in the source device of cordless communication network, the signal being previously sent is resend with the power output increased after HARQ message is received by source device, to improve the reliability of signal re-transmission, so as to reduce the average delay time of whole network.
According to an aspect of the invention, there is provided a kind of method for being used to carry out signal based on HARQ autonomous retransmission in the source device of cordless communication network, it is characterised in that Bao include Yi Xia Bu Sudden：Receive the HARQ message from the next stage network equipment；According to the HARQ message, the signal being previously sent is retransmitted with the power output increased.
There is provided a kind of automatic retransmission device for being used to carry out signal based on HARQ autonomous retransmission in the source device of wireless network according to another aspect of the present invention, it is characterised in that including：Reception device, for receiving the HARQ message from the next stage network equipment；Signal retransmission arrangement, for according to the HARQ message, the signal being previously sent to be retransmitted with the power output increased.
In the present invention, instantly the signal from source device that primary network station equipment interconnection is received verified obtained by result for mistake when, the next stage network equipment sends HARQ to source device, source device re-starts transmission to the signal being previously sent according to the HARQ with the power output increased.In signal retransmission processes, source device often receives a HARQ message, just adjusts its power output（Increase its power output）The signal being previously sent is retransmitted, because source device is that the signal being previously sent is resend with the power output of increase, therefore, the reliability that signal is retransmitted is greatly increased, so as to reduce the average delay time of network.Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, other features, objects and advantages of the invention will become more apparent：
Fig. 1 shows the wireless relay network Wang Network structural representations according to prior art；Fig. 2 a show the schematic network structure of the wireless relay network according to the present invention, wherein, relay station is worked under the preceding mode of operation to relaying of decoding；
Fig. 2 b show the schematic network structure of the wireless relay network according to the present invention, wherein, relay station is worked under the preceding mode of operation to relaying of amplification；
Fig. 3 is shown according to the specific embodiment of the present invention, and the flow chart for carrying out the method for autonomous retransmission to signal based on HARQ is used in the source device of cordless communication network；
Fig. 4 is shown according to a preferred embodiment of the present invention, and the flow chart for carrying out the method for autonomous retransmission to signal based on HARQ is used in the source device of cordless communication network；
Fig. 5 is shown according to another preferred embodiment of the invention, in cordless communication network
It is used for the flow chart for carrying out the method for autonomous retransmission to signal based on HARQ in source device；
Fig. 6 is shown according to the specific embodiment of the present invention, and the structural representation for carrying out the automatic retransmission device of autonomous retransmission to signal based on HARQ is used in the source device of wireless network；
Fig. 7 is shown according to a preferred embodiment of the present invention, and the structural representation for carrying out the automatic retransmission device of autonomous retransmission to signal based on HARQ is used in the source device of wireless network；And
Fig. 8 is shown according to a further advantageous embodiment of the invention, and the structural representation for carrying out the automatic retransmission device of autonomous retransmission to signal based on HARQ is used in the source device of wireless network.
Same or analogous reference represents same or analogous part in accompanying drawing.Embodiment
Hereinafter with reference to accompanying drawing, the present invention will be described in detail.
Fig. 2 a show the schematic network structure of the wireless relay network according to the present invention, wherein, relay station is worked under the preceding mode of operation to relaying of decoding.
Schematic network structure shown in Fig. 2 a includes user equipment 1, relay station 2 and base station 3.Although it will be understood by those skilled in the art that merely illustrating a relay station in figure, in a particular application, the situation of multiple relay stations, i.e. hop relay network can be included.Relay station 2 described in figure is worked under the preceding mode of operation to relaying of decoding.
Specifically, because relay station 2 is operated in before decoding under relaying mode of operation, after relay station 2 receives the signal from user equipment 1, the relay station 2 does not forward the signal directly to base station 3, but the signal is verified.When check results are correct, the signal is forwarded to base station 3 by relay station 2;When check results is mistakes, relay station 2 sends HARQ（ARQ) message is to user equipment 1.When user equipment 1 receives the HARQ from relay station 2（ARQ) after message, its power output is adjusted according to the HARQ（Increase power output）, then, the signal being previously sent is retransmitted with the power output increased.If relay station 2 is received after the signal of re-transmission, to the re-transmission signal
The result verified is still mistake, then repeats above-mentioned step, until relay station 2 receives correct re-transmission signal or reaches maximum number of retransmissions set in advance, the signal from user equipment 1 received just is forwarded into base station 3.
Similarly, after base station 3 receives the signal from relay station 2, the signal is verified.When check results is mistakes, base station 3 sends HARQ（ARQ) message is to relay station 2.When relay station 2 receives the HARQ from base station 3（ARQ) after message, its power output is adjusted according to the HARQ（Increase power output）, then, the signal being previously sent is retransmitted with the power output increased.As bright base station 3 is received after the signal of re-transmission, the result verified to the re-transmission signal is still mistake, then repeat above-mentioned step, until base station 3 receives correct re-transmission signal or reaches maximum number of retransmissions set in advance, just stop retransmitting the signal being previously sent.
In the wireless relay network shown in Fig. 2 a, user equipment and relay station can adjust its power output after the HARQ message from the next stage network equipment is received, and (increase its power output）, and the signal being previously sent is retransmitted with the power output increased.
Fig. 2 b show the schematic network structure of the wireless relay network according to the present invention, wherein, relay station is worked under the preceding mode of operation to relaying of amplification.
Schematic network structure shown in Fig. 2 b includes user equipment Γ, relay station 2, and base station 3,.Although it will be understood by those skilled in the art that merely illustrating a relay station in figure, in a particular application, multiple relay stations can be included.Relay station 2 described in figure, are worked under the preceding mode of operation to relaying of amplification.
Specifically, due to relay station 2, it is operated in before amplification under relaying mode of operation, when relay station 2, receive from user equipment 1, signal after, the signal is not verified, but base station 3 is forwarded directly to after being amplified to the signal,, when base station 3, receive from relay station 2, after the signal of forwarding, the signal is verified.When check results is mistakes, base station 3' sends HARQ（ARQ) message is to relay station 2, relay station 2 forwards it to user equipment 1 again after receiving the HARQ message,.When user equipment 1, receive from relay station 2, the HARQ of forwarding（ARQ) after message, its power output is adjusted according to the HARQ（Increase power output）, then, the signal being previously sent is retransmitted with the power output increased.If base station 3, is received after the signal of re-transmission, heavy to this
The result that biography signal is verified is still mistake, then repeats above-mentioned step, until base station 3, receives correct re-transmission signal or arrival maximum number of retransmissions set in advance, just stops retransmitting the signal being previously sent.
In the wireless relay network shown in Fig. 2 b, only user equipment Γ ability bases receive the HARQ message from base station and adjust its power output (increasing its power output), and retransmitted the signal being previously sent with the power output increased, and relay station 2, not power adjustment.
In above-mentioned Fig. 2 a and Fig. 2 b, the schematic network structure for the wireless relay network according to the present invention under two kinds of relaying mode of operations is briefly described, and the present invention is further described in detail hereinafter with reference to accompanying drawing 3-8：
Fig. 3 is shown according to the specific embodiment of the present invention, and the flow chart for carrying out the method for autonomous retransmission to signal based on HARQ is used in the source device of cordless communication network.
In this embodiment, step S11 is first carried out, the HARQ message from the next stage network equipment is received；
Secondly perform step S12, new power output determined according to the HARQ message, this it is new it is pleased go out power should more former power output have certain increment, so as to improve the reliability for retransmitting signal；
Step S13 is finally performed, the signal being previously sent is retransmitted with the new power output.
In this embodiment, next stage Wang Network equipment is received after the signal from source device, and code check is carried out to the signal.The code check can include Cyclic Redundancy Code（CRC) school long-mouth dog or even-odd check, other kinds of code check mode can also be included, as long as can be judged to correctness of the signal from source device in transmitting procedure, this is that those skilled in the art will be understood that, therefore not to repeat here.
If check results are correct, the next stage network equipment sends ack signal（ACK) to source device, and the signal from source device received is forwarded to the next stage network equipment again；If check results are mistake, the next stage network equipment sends HARQ message (ARQ, or NAK) to source device.The source device can include user equipment, can also wrap
Mobile-relay station is included, as long as source device can adjust its power output according to the HARQ received, this is that those skilled in the art will be understood that, therefore not to repeat here.
For step S12, in a preferred embodiment, under one or many re-transmission failure scenarios, source device may receive the multiple HARQ for same signal（In pre-determined number）, to cause the reliability retransmitted every time, once transmission increases earlier above, and source device needs to make the power output retransmitted every time certain adjustment.Preferably, source device can preserve the power output retransmitted every time, when receiving another repeat requests, and simply source output power value is added with the power increment value and can determine that new output power value.More preferably, when source device can also be counted to HARQ (ARQ) message for same signal from next stage Wang Network equipment, then, source device determines the corresponding new power output of this repeat requests according to the number of times of the HARQ message and the increment of each power adjustment.
For step S12, in a further advantageous embodiment, when source device receives the HARQ from the next stage network equipment（ARQ) after message, power adjustment configured information is obtained from the HARQ message, then, new power output is determined according to power adjustment configured information is changed.Specifically, the power adjustment configured information can directly include source device and retransmit the power output size that the signal being previously sent should be used, or the power output and the difference of the power output of current source device that should be used including the signal that source device re-transmission is previously sent.Further, the power adjusts the particular state for the channel that configured information can also be transmitted according to current demand signal to adaptively determine.
The signal being previously sent is retransmitted with the new power output after source device determines new power output according to HARQ message.
Above-mentioned two preferred embodiment is described in detail below with reference to Figure 4 and 5.
Fig. 4 is shown according to a preferred embodiment of the present invention, and the flow chart for carrying out the method for autonomous retransmission to signal based on HARQ is used in the source device of cordless communication network.
In this embodiment, step sir is first carried out, the HARQ message from the next stage network equipment is received；
Secondly step S12 is performed, new output work is determined according to the HARQ message
Rate；
Step S13 is finally performed, the signal being previously sent is retransmitted with the new power output.
Specifically, step S12, including step S121, and step S122,.
In step S12, in, step S 121 is first carried out, the HARQ message to same signal received is counted；
Secondly step S122 is performed, the new power output is determined according to the number of times of the HARQ message and the increment of each power adjustment.
Fig. 4 be one of the present invention preferred embodiment, although include step S121 ' in preferred embodiment at this, it is understood by one skilled in the art that in specific application, step S121 is optional.
Specifically, primary network station equipment instantly receive it is correct retransmit signal or reach source device after maximum number of retransmissions set in advance just output it in the case that power is reset to initial value, source device can be with the increment of its pre-set each power, after source device receives the HARQ message from next network equipment every time, just its power output is adjusted according to the power increment, the power increment is added i.e. in original power output, obtains new power output to retransmit the signal being previously sent.If the next stage network equipment is received after re-transmission signal, it is still mistake that check results are carried out to the re-transmission signal, then repeat above-mentioned step, until the next stage network equipment receives correct re-transmission signal or reaches maximum number of retransmissions set in advance, the signal from source device received is just forwarded to the next stage network equipment again by the next stage network equipment, meanwhile, source device outputs it performance number and is reset to initial value.
All output it after source device is being retransmitted each time in the case that power is reset to initial value, source device can be with the increment of its pre-set each power, after source device receives the HARQ message from next network equipment for the first time, the HARQ is counted and its power output is adjusted according to pre-set increment, the predetermined power increment is added i.e. on the initial value of power output, new power output is obtained to retransmit the signal being previously sent, the power output of source device is reset to initial value again after re-transmission.If the next stage network equipment is received after the re-transmission signal, to the re-transmission signal
The result verified is still mistake, retransmission request message is then sent for the second time to source device, source device to this ' HARQ message counts, and its power output is adjusted according to pre-set increment, the value of twice of predetermined power increment is added i.e. on the basis of power output initial value, obtain new power output to retransmit the signal being previously sent, the power output of source device is reset to initial value again after re-transmission.If the next stage network equipment is received after the re-transmission signal, the result verified to the re-transmission signal is still mistake, then repeat the above steps, i.e. before third time is retransmitted, the value of the predetermined power increment of three times is added on the basis of power output initial value, when retransmitting for the 4th time, the value of four times of predetermined power increment is added on the basis of power output initial value, in n-th retransmission, the value of N times of predetermined power increment is added on the basis of power output initial value, wherein, N is less than maximum number of retransmissions set in advance.Until the next stage network equipment receives correct re-transmission signal or reaches maximum number of retransmissions set in advance, the signal from source device received is just forwarded to the next stage network equipment again by the next stage network equipment.
More specifically, the predetermined power increment can be set according to the concrete condition of channel.Fig. 5 is shown according to another preferred embodiment of the invention, and the flow chart for carrying out the method for autonomous retransmission to signal based on HARQ is used in the source device of cordless communication network.
In this embodiment, step S11 " is first carried out, the HARQ message from the next stage network equipment is received；
Secondly step S12 " is performed, new power output is determined according to the HARQ message；
Step S13 " is finally performed, the signal being previously sent is retransmitted with the new power output.
Specifically , Bu Sudden S12 " including step S121 " and suddenly S122 ".
In step S12 ", step S121 " is first carried out, power adjustment configured information is obtained in the HARQ message；
Secondly step S122 " is performed, adjusts configured information to determine new power output according to the power.
Fig. 5 be the present invention another preferred embodiment, in this embodiment,
Next stage Wang Network equipment is received after the signal from source device, and code check is carried out to the signal.The code check can include Cyclic Redundancy Code（CRC) verification or even-odd check, other kinds of code check can also be included, as long as can be judged to correctness of the signal from source device in transmitting procedure, this is that those skilled in the art will be understood that, therefore not to repeat here.
If check results are correct, the next stage network equipment sends ack signal（ACK) to source device, and the signal from source device received is forwarded to the next stage network equipment again；If check results are mistake, the next stage network equipment sends HARQ message (ARQ, or NAK) to source device.The source device can include user equipment, can also include mobile-relay station, as long as source device can adjust its power output according to the HARQ received, this is that those skilled in the art will be understood that, therefore not to repeat here.
When source device receives the HARQ from the next stage network equipment（ARQ) after message, power adjustment configured information is obtained from the HARQ message.Specifically, the power adjustment configured information can directly include source device and retransmit the power output size that the signal being previously sent should be used, or the power output and the difference of the power output of current source device that should be used including the signal that source device re-transmission is previously sent.When the power, which adjusts configured information, retransmits the difference of power output and the power output of current source device that the signal being previously sent should be used including source device, as long as the difference to be added to the power output of current source device, you can obtain source device and retransmit the power output that the signal being previously sent should be used.
Further, the power adjusts the particular state for the channel that configured information can also be transmitted according to current demand signal to adaptively determine.If the state for the channel that current demand signal is transmitted is poor, the size of the power output needed for the signal that the source device re-transmission that the power adjustment configured information is included is previously sent should correspondingly increase a larger amplitude on the basis of original power output；If the state for the channel that current demand signal is transmitted is preferably, the size of the power output needed for the signal that the source device re-transmission that the power adjustment configured information is included is previously sent should correspondingly increase a less amplitude on the basis of original power output.
After new power output is determined according to the power indicative information, the signal being previously sent is transmitted by source device with the new power output.If the next stage network equipment is received after re-transmission signal, check results are still mistake, then repeat above-mentioned step, until next
The level network equipment receives correct re-transmission signal or reaches maximum number of retransmissions set in advance, the signal from source device received is just forwarded to the next stage network equipment again by the next stage network equipment, meanwhile, source device outputs it performance number and is reset to initial value.Further, source device can also output it power setting for initial value after retransmitting each time, and when retransmitting for second, the power output of source device is to carry out power adjustment again on the basis of initial power output.
Fig. 6 is shown according to the specific embodiment of the present invention, and the structural representation for carrying out the automatic retransmission device of autonomous retransmission to signal based on HARQ is used in the source device of wireless network.The automatic retransmission device 1 includes reception device 11 and signal retransmission arrangement 12.
First, reception device 11 is used to receive the HARQ message from the next stage network equipment；
Secondly, signal retransmission arrangement 12 is used for according to the HARQ message, and the signal being previously sent is retransmitted with the power output increased.
In this embodiment, the next stage network equipment is received after the signal from source device, and code check is carried out to the signal.The code check can include cyclic redundancy（CRC) verification or even-odd check, other kinds of code check can also be included, as long as can be judged to correctness of the signal from source device in transmitting procedure, this is that those skilled in the art will be understood that, therefore not to repeat here.
If school long-mouth dog result is correct, the next stage network equipment sends ack signal（ACK) to source device, and the signal from source device received is forwarded to the next stage network equipment again；If check results are mistake, the next stage network equipment sends HARQ message (ARQ, or NAK) to source device.The source device can include user equipment, can also include mobile-relay station, as long as source device can adjust its power output according to the HARQ received, this is that those skilled in the art will be understood that, therefore not to repeat here.
In a preferred embodiment, under one or many re-transmission failure scenarios, reception device 11 may receive the multiple HARQ for same signal（In pre-determined number）, to cause the reliability retransmitted every time, once transmission increases earlier above, and source device needs to make the power output retransmitted every time certain adjustment.Preferably, source device can preserve retransmit every time defeated
Go out power, when receiving another repeat requests, using aforesaid way, simply source output power value is added with the power increment value and can determine that new output power value.It is highly preferred that also can be by counting device to the HARQ for same signal from next stage Wang Network equipment（ARQ) message is counted, then, and power determining device is according to the HARQ；%, number of times and the increment of each power adjustment determine the corresponding new power output of this repeat requests.
In a further advantageous embodiment, when reception device 11 receives the HARQ from the next stage network equipment（ARQ) after message, acquisition device obtains power adjustment configured information from the HARQ message, then, and power determining device adjusts configured information according to the power and determines new power output.Specifically, the power adjustment configured information can directly include source device and retransmit the power output size that the signal being previously sent should be used, or the power output and the difference of the power output of current source device that should be used including the signal that source device re-transmission is previously sent.Further, the power adjusts the particular state for the channel that configured information can also be transmitted according to current demand signal to adaptively determine.
After power determining device determines new power output according to HARQ message, signal retransmission arrangement 12 is retransmitted the signal being previously sent with the new power output.
It is described in detail referring to Fig. 7 and 8 pair of above two preferred embodiment.
Fig. 7 is shown according to a preferred embodiment of the present invention, and the structural representation for carrying out the automatic retransmission device of autonomous retransmission to signal based on HARQ is used in the source device of wireless network.The automatic retransmission device Γ includes the Γ of reception device 1, signal retransmission arrangement 12, and counting device 13,；The signal retransmission arrangement 12, including the first power determining device 123, and the first retransmission arrangement 124,.Wherein, reception device 11, are same devices with the reception device 11 described in Fig. 4, and it realizes identical function.
First, reception device 11, for receiving the HARQ message from the next stage network equipment；
Secondly, counting device 13, for being counted to the HARQ message to same signal received；
Finally, signal retransmission arrangement 12, for according to the HARQ message, by first
The signal of preceding transmission re-starts re-transmission with the power output increased.
Specifically, signal retransmission arrangement 12, in the first power determining device 123, for being disappeared according to the HARQ, number of times and the increment of each power adjustment determine the new power output；
First retransmission arrangement 124, for the signal being previously sent to be retransmitted with the new power output.
In this embodiment, the next stage network equipment is received after the signal from source device, and code check is carried out to the signal.The code check can include cyclic redundancy（CRC) verification or even-odd check, other kinds of code check can also be included, as long as can be judged to correctness of the signal from source device in transmitting procedure, this is that those skilled in the art will be understood that, therefore not to repeat here.
If check results are correct, the next stage network equipment sends ack signal（ACK) to source device, and the signal from source device received is forwarded to the next stage network equipment again；If check results are mistake, the next stage network equipment sends HARQ message (ARQ, or NAK) to source device.The source device can include user equipment, can also include mobile-relay station, as long as source device can adjust its power output according to the HARQ received, this is that those skilled in the art will be understood that, therefore not to repeat here.
After the next stage network equipment is to receiving the signal progress code check from source device, reception device 11 in source device, receive HARQ (ARQ) message from next Grade network equipments, then, counting device 13' is counted to the HARQ message to same signal received.After being counted to HARQ, the first power determining device 123 determines the new power output according to the number of times of the HARQ message and the increment of each power adjustment.
Fig. 7 be one of the present invention preferred embodiment, although include counting device 13 in preferred embodiment at this, it is understood by one of ordinary skill in the art that in specific application, counting device 13 is optional.
Primary network station equipment instantly receive it is correct retransmit signal or reach source device after maximum number of retransmissions set in advance just output it in the case that power is reset to initial value, source device can be with the increment of its pre-set each power, when reception device 11, often
It is secondary to receive after the HARQ message from next network equipment, just its power output is adjusted according to the power increment, the power increment is added i.e. in original power output, obtains new power output to retransmit the signal being previously sent.If the next stage network equipment is received after re-transmission signal, it is still mistake that check results are carried out to the re-transmission signal, then repeat above-mentioned step, until next stage Wang Network equipment receives correct re-transmission signal or reaches maximum number of retransmissions set in advance, the signal from source device received is just forwarded to the next stage network equipment again by the next stage network equipment, meanwhile, source device outputs it performance number and is reset to initial value.
All output it after source device is being retransmitted each time in the case that power is reset to initial value, source device can be with the increment of its pre-set each power, when reception device 11, receive for the first time after the HARQ message from next network equipment, counting device
13, the HARQ is counted and its power output is adjusted according to pre-set increment, the predetermined power increment is added i.e. on the initial value of power output, obtain new power output to retransmit the signal being previously sent, the power output of source device is reset to initial value again after re-transmission.If the next stage network equipment is received after the re-transmission signal, the result verified to the re-transmission signal is still mistake, retransmission request message is then sent for the second time to source device, counting device 13 in source device, the HARQ message is counted, and its power output is adjusted according to pre-set increment, the value of twice of predetermined power increment is added i.e. on the basis of power output initial value, new power output is obtained to retransmit the signal being previously sent, the power output of source device is reset to initial value again after re-transmission.If the next stage network equipment is received after the re-transmission signal, the result verified to the re-transmission signal is still mistake, then repeat the above steps, i.e. before third time is retransmitted, the value of the predetermined power increment of three times is added on the basis of power output initial value, when retransmitting for the 4th time, the value of four times of predetermined power increment is added on the basis of power output initial value, in n-th retransmission, the value of N times of predetermined power increment is added on the basis of power output initial value, wherein, N. is less than maximum number of retransmissions set in advance.Until next Grade network equipments receive correct re-transmission signal or reach maximum number of retransmissions set in advance, the signal from source device received is just forwarded to the next stage network equipment again by the next stage network equipment.
More specifically, the predetermined power increment can be set according to the concrete condition of channel.Fig. 8 is shown according to another preferred embodiment of the invention, and the structural representation for carrying out the automatic retransmission device of autonomous retransmission is used in the source device of wireless network.The automatic retransmission device 1 " including reception device 11 " and signal retransmission arrangement 12 ";The signal retransmission arrangement 12 " including acquisition device 121 " and the second retransmission arrangement 122 ";Second retransmission arrangement 122 " including the second power determining device 1221 " and third retransmission device 1222 ".
First, reception device 11 " is used to receive the HARQ message from the next stage network equipment；
Secondly, signal retransmission arrangement 12 " is used for according to the HARQ message, the signal being previously sent is re-started into re-transmission with the power output increased.
Specifically, signal retransmission arrangement 12 " in acquisition device 121 " is used to obtain power adjustment configured information in the HARQ message；
Signal retransmission arrangement 12 " in the second retransmission arrangement 122 " is used to adjust configured information based on the power, and the signal being previously sent is re-started into re-transmission with the power output increased；
" in the second power determining device 1221 " is used to adjust configured information to determine new power output according to the power more specifically, the second retransmission arrangement 122；
Second retransmission arrangement 122, in third retransmission device 1222 " be used for the signal being previously sent is retransmitted with the new power output.
Fig. 8 be the present invention another preferred embodiment, in this embodiment, the next stage network equipment is received after the signal from source device, to the signal carry out code check.The code check can include cyclic redundancy（CRC) verification or even-odd check, other kinds of code check can also be included, as long as can be judged to correctness of the signal from source device in transmitting procedure, this is that those skilled in the art will be understood that, therefore not to repeat here.
If check results are correct, the next stage network equipment sends ack signal（ACK) to source device, and the signal from source device received is forwarded to the next stage network equipment again；If check results are mistake, the next stage network equipment sends HARQ message (ARQ, or NAK) to source device.The source device can include user equipment, can also include mobile-relay station, as long as source device can adjust it according to the HARQ received
Power output, this is that those skilled in the art will be understood that, therefore not to repeat here.After the next stage network equipment is to receiving the signal progress code check from source device, reception device 11 in source device " receives HARQ (ARQ) message from the next stage network equipment; then, and signal retransmission arrangement 12 " in acquisition device 121 " obtains power adjustment configured information from the HARQ message.Specifically, the power adjustment configured information can directly include source device and retransmit the power output size that the signal being previously sent should be used, or the power output and the difference of the power output of current source device that should be used including the signal that source device re-transmission is previously sent.When the power, which adjusts configured information, retransmits the difference of power output and the power output of current source device that the signal being previously sent should be used including source device, as long as the difference to be added to the power output of current source device, you can obtain source device and retransmit the power output that the signal being previously sent should be used.
Further, the power adjusts the particular state for the channel that configured information can also be transmitted according to current demand signal to adaptively determine.If the state for the channel that current demand signal is transmitted is poor, the size of the power output needed for the signal that the source device re-transmission that the power adjustment configured information is included is previously sent should correspondingly increase a larger amplitude on the basis of original power output；If the state for the channel that current demand signal is transmitted is preferably, the size of the power output needed for the signal that the source device re-transmission that the power adjustment configured information is included is previously sent should correspondingly increase a less amplitude on the basis of original power output.
Acquisition device 121 in source device " is obtained from the HARQ message after power adjustment configured information; the second power determining device 1221 " determines new power output according to the power indicative information, then, third retransmission device 1222 " is retransmitted the signal being previously sent with the new power output.If the next stage network equipment is received after re-transmission signal, check results are still mistake, then repeat above-mentioned step, until the next stage network equipment receives correct re-transmission signal or reaches maximum number of retransmissions set in advance, the signal from source device received is just forwarded to the next stage network equipment again by the next stage network equipment, meanwhile, source device outputs it performance number and is reset to initial value.Further, source device can also output it power setting for initial value after retransmitting each time, and when retransmitting for second, the power output of source device is to carry out power adjustment again on the basis of initial power output.
The specific embodiment of the present invention is described above, it is to be understood that the invention is not limited in above-mentioned specific embodiment, those skilled in the art can make various sizings and modification within the scope of the appended claims.
Claims (1)
- Claim1. a kind of method for being used to carry out signal autonomous retransmission based on HARQ in the source device of cordless communication network, it is characterised in that comprise the following steps：A. the HARQ message from next stage Wang Network equipment is received；C. according to the HARQ message, the signal being previously sent is retransmitted with the power output increased.2. the method according to claim 1, it is characterised in that the step c is further comprising the steps of：Cl ' determine new power output based on predetermined power increment according to the HARQ message；C2'. the signal being previously sent is retransmitted with the new power output.3, method according to claim 2, it is characterised in that further comprising the steps of after the step a：B. the HARQ message to same signal received is counted；Wherein, the step cl, in addition to：- the new power output is determined according to the number of times of the HARQ message and the increment of each power adjustment.4. the method according to claim 1, it is characterised in that the HARQ message includes power and adjusts configured information, and the step c comprises the following steps：Cl obtain power adjustment configured information in the HARQ message；C2. configured information is adjusted based on the power, the signal being previously sent is retransmitted with the power output increased.5, method according to claim 4, it is characterised in that the step c2 Bao include Yi Xia Bu Sudden：- adjust configured information to determine new power output according to the power；- retransmitted the signal being previously sent with the new power output.6. the method according to any one of claim 1-5, it is characterised in that the source device includes user equipment or relay station.7. a kind of be used to carry out signal the automatic retransmission device of autonomous retransmission based on HARQ in the source device of wireless network, it is characterised in that including：Reception device, for receiving the HARQ message from the next stage network equipment；Signal retransmission arrangement, for according to the HARQ message, the signal being previously sent to be retransmitted with the power output increased.8. automatic retransmission device according to claim 7, it is characterised in that the signal retransmission arrangement also includes：First power determining device, for according to the HARQ message, new power output to be determined based on predetermined power increment；First retransmission arrangement, for the signal being previously sent to be retransmitted with the new power output.9. automatic retransmission device according to claim 8, it is characterised in that also include：Counting device, for being counted to the HARQ message to same signal received;Wherein, the first power determining device is additionally operable to determine the new power output according to the number of times of the HARQ message and the increment of each power adjustment.10. automatic retransmission device according to claim 7, it is characterised in that the HARQ message includes power and adjusts configured information, and the signal retransmission arrangement includes：Acquisition device, for obtaining power adjustment configured information in the HARQ message；Second retransmission arrangement, for adjusting configured information based on the power, the signal being previously sent is retransmitted with the power output increased.11. the automatic retransmission device according to claim 10, it is characterised in that second retransmission arrangement includes：Second power determining device, new power output is determined for adjusting configured information according to the power；Third retransmission device, for the signal being previously sent to be retransmitted with the new power output.12. the automatic retransmission device according to any one of claim 7-11, it is characterised in that the source device includes user equipment or relay station.
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| PCT/CN2007/003106 WO2009055969A1 (en) | 2007-11-01 | 2007-11-01 | Method of automatic retransmission in wireless communication network and device thereof |
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| WO2017028746A1 (en) * | 2015-08-14 | 2017-02-23 | 索尼公司 | Device and method in wireless communication system |
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| CN1155182C (en) * | 2001-09-27 | 2004-06-23 | 华为技术有限公司 | Power control method based on mixed automatic retransmission mechanism |
| JP3679089B2 (en) * | 2002-11-20 | 2005-08-03 | 松下電器産業株式会社 | Base station apparatus and retransmission packet transmission power control method |
| SE0301076D0 (en) * | 2003-04-08 | 2003-04-08 | Ericsson Telefon Ab L M | A method in a telecommunication system |
| CN100358255C (en) * | 2004-08-11 | 2007-12-26 | 华为技术有限公司 | Affirmation information power control method for automatic retransmission request system |
| CN100449980C (en) * | 2004-11-16 | 2009-01-07 | 华为技术有限公司 | Method for regulating power of mixed automatic box transmission request system |
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| WO2017028746A1 (en) * | 2015-08-14 | 2017-02-23 | 索尼公司 | Device and method in wireless communication system |
| US10177880B2 (en) | 2015-08-14 | 2019-01-08 | Sony Corporation | Device and method in wireless communication system |
| US10615919B2 (en) | 2015-08-14 | 2020-04-07 | Sony Corporation | Device and method in wireless communication system |
| US10944513B2 (en) | 2015-08-14 | 2021-03-09 | Sony Corporation | Device and method in wireless communication system |
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