CN1951056B - Method, system and station for communicating data packets using ARQ - Google Patents
Method, system and station for communicating data packets using ARQ Download PDFInfo
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Abstract
A system (50) for communicating data packets from a first station (100) to a destination (400) via at least one of a plurality of second stations (200) which are coupled to the destination (400), in which the second stations (200) acknowledge receipt of the data packets. The first station (100) decides whether to retransmit a data packet or to proceed with transmitting the next data packet, the decision being dependent on receiving a plurality of positive acknowledgements or a plurality of negative acknowledgements.
Description
The present invention relates to a kind of communication system, relate to a kind ofly, and relate to a kind of method that transmits packet for the communication station that uses in the system.The present invention is applied to mobile communication especially, for example is applied to the transfer of data from the travelling carriage to the stationary nodes during the soft handover between a plurality of base stations, perhaps is applied to the diversity reception of a plurality of base stations.
As everyone knows, cell mobile communication systems uses soft handover, wherein travelling carriage from a sub-district when shift another sub-district interim with more than one cell communication, to drop to any interruption to ongoing communication minimum.
Same well-known, communication system is used the retransmission protocol of so-called ARQ (re-send request may automatically) agreement.In the ARQ agreement, by receiving equipment (acknowledge) replied in data groupings, and if this reply or lack and reply expression and successfully do not receive this grouping, then transmitting apparatus is retransmitted this packet.
What expect is to use the ARQ agreement to postpone so that improve throughput and reduce during soft handover.In this case, being in each base station in communicating by letter (being called " effectively base station ") with travelling carriage can send one and reply in response to receiving packet.Packet can be sent to the packet destination from any one effective base station, if therefore at least one base station successfully receives this packet, then this packet just can arrive its destination.
The objective of the invention is to realize a kind of improved retransmission protocol.
According to a first aspect of the invention, provide a kind of packet is sent to the method for node device from first stop, this node device is coupled to a plurality of second stations, and this method comprises:
-send first packet from first stop;
-receive first packet that is sent at a plurality of second stations;
-according to first standard, be evaluated at each second station and whether successfully receive this first packet;
-from least one second station that successfully receives this packet this first packet is forwarded to node device;
During-transmission is following at least one:
Send affirmative acknowledgement from each second station that successfully receives first packet; And
Never each second station that successfully receives first packet sends negative response;
-receive this at first stop to reply;
-in more following at least one:
The affirmative acknowledgement number and the first threshold that receive; And
The negative response number that receives and second threshold value;
Wherein at least one in first and second threshold values is greater than one; And
-use this comparative result to determine that repeating transmission first packet still is to send second packet.
According to a second aspect of the invention, provide a kind of communication system, this communication system comprises first stop and the node device that is coupled to a plurality of second stations, and described second station is used for packet is sent to node device from first stop,
Described first stop comprises the transmitter installation that is used to send first packet,
Each second station comprises:
-be used to receive the device of first packet;
-be used for assessing the device that whether successfully receives first packet according to first standard;
If-be used for successfully receiving the device that first packet just is forwarded to this first packet node device;
-be used for sending the device of following at least one:
If successfully receive first packet, just send affirmative acknowledgement; And
If successfully do not receive first packet, just send negative response;
This node device comprises the device that is used to receive first packet of being transmitted;
This first stop also comprises:
-be used to receive the device of replying;
-be used for the device of more following at least one:
The affirmative acknowledgement number and the first threshold that receive; And
The negative response number that receives and second threshold value;
Wherein at least one in first and second threshold values is greater than one; And
-be used to use this comparative result to determine to retransmit the device that first packet still is transmission second packet.
According to a third aspect of the invention we, provide a kind of for the first stop that uses in communication system, this communication system comprises the node device that is coupled to a plurality of second stations, and described second station is used for packet is sent to node device from first stop, and this first stop comprises:
-transmitter installation is used for first packet is sent to second station,
-be used for receiving the device reply from second station;
-be used for the device of more following at least one:
The affirmative acknowledgement number and the first threshold that receive; And
The negative response number that receives and second threshold value;
Wherein at least one in first and second threshold values is greater than one; And
-be used to use this comparative result to determine to retransmit the device that first packet still is transmission second packet.
Therefore, according to the present invention, first stop can not reply just decision be retransmitted data packet or send new packet based on receiving only one, but need receive replying more than the same type of one positive or negative before making decision.Compare with the situation that single second station is only arranged, for a plurality of second stations, misread one of them probability of replying and increase, thereby the probability that causes making erroneous decision increases.By making decision according to a plurality of the replying of the same type that receives from one or more second stations, the probability of making erroneous decision is minimized.Erroneous decision can cause the delay that increases, the throughput of minimizing and the coverage of minimizing.Therefore, the present invention can realize improved delay, improved throughput and improved coverage.
The decision of whether retransmitting can be based on the number of affirmative acknowledgement or negative response or the combination of the two.Number for affirmative acknowledgement and negative response can be used different threshold values.
In one embodiment, retransmit to add up for the one or many of the initialization of packet and identical data packet and reply number, and the number that is added up is used to determine that retransmitted data packet still is to send new packet.
In an embodiment of the present invention, second station sends affirmative acknowledgement representing successfully to receive first packet, and the number P of the affirmative acknowledgement that receives at first stop is counted, and with threshold value T
P(T
P＞1) compares.If P＜T
P, then first stop is retransmitted this first packet; And if P 〉=T
P, then send new packet.
In another embodiment of the present invention, second station sends negative response and does not successfully receive first packet with expression, and the number N of the negative response that receives at first stop is counted, and with threshold value T
N(T
N＞1) compares.If N＞T
N, then first stop is retransmitted this first packet; And if N≤T
N, then carry out the transmission of new packet.
Referring now to accompanying drawing, describe the present invention, wherein by example:
Fig. 1 is the schematic block diagram of communication system;
Fig. 2 is the flow chart that transmits the method for packet.
With reference to figure 1, wireless communication system 50 has been described, this wireless communication system 50 comprises first stop 100 and is coupled to a plurality of second stations 200 of destination node device 400.First stop 100 for example can be a mobile communication equipment, and second station 200 can be the base station in the mobile communications network.Term " node device " be used to refer to be coupled to will be in a plurality of second stations 200 of its route first packet each any equipment.
First stop 100 comprises the transmitter 110 that is used for sending packet on up link 310.This transmitter 110 has the output that is coupled to antenna 120 via coupling device 130, and this coupling device 130 for example can be circulator or diverter switch.This coupling device 130 also is coupled to the input that is used for from the receiver 140 of antenna 120 receiving downlinks 320 signals.What be coupled to transmitter 110 and receiver 140 is control device (μ C) 150, and for example processor is used to handle the signal that receives from second station 200.Be coupled to control device 150 or with control device 150 integrated be storage device 160, be used to store one or more threshold values and one or more counting of replying.
Each of second station 200 comprises the receiver 240 that is used to receive the signal that is sent by first stop 100 on up link 310.Receiver 240 has the input that is coupled to antenna 220 via coupling device 230, and this coupling device 230 for example can be circulator or diverter switch.This coupling device 230 also is coupled to the output that is used for sending via antenna 220 transmitter 210 of down link signal.What be coupled to transmitter 210 and receiver 240 is control device (μ C) 250, and for example processor is used to handle the packet that receives from first stop 100, and is used to obtain the answer signal that sent on down link 320 by transmitter 210.
Node device 400 comprises the receiver 410 that is used to receive the packet of being transmitted by second station 200.It also comprises and is used for the add ons that is used for received data grouping, for example is used to the device of storing, transmitting or handle.These are not shown in Figure 1, because they are not critical to the present invention.
The operation of wireless communication system 50 is described referring now to the flow chart of Fig. 2.In Fig. 2, the step on the flow chart left side relates to the step of being carried out by first stop 100, and the step on the right relates to the step of being carried out by each second station 200.
In step 510, first stop 100 sends first packet via its transmitter 110 to each second station 200.Receive each second station, 200 execution in step 520-550 of this first packet.
In step 520, receive this first packet via its receiver 240 at second station 200.
In step 530, control device 250 is assessed according to first standard and whether is successfully received first packet.Term " successfully receives " and is used for representing can correctly determining the information bit that comprises in this packet by receiving equipment.This success may be to use the result of such technology, for example error correction or error detection, the selective repeat of partial information bit, perhaps merging data grouping or information bit more than one transmission.First standard can be taked any in the various ways, and for example can depend on the type by the information that this packet transmitted.Some example criteria are: must satisfy cyclic redundancy check (CRC); All information bits all must be zero defects; Special information bits must be a zero defect; The mistake that must be less than given number; All information bits all satisfy reliability thresholds.Those skilled in the art can easily discern other standards that can replace above-mentioned example or use in conjunction with above-mentioned example.
In step 540, if successfully receive, control device 250 just is forwarded to node device 400 with this first packet, and node device 400 receives this packet via its receiver 410.In certain embodiments, control device 250 can also be transmitted the incorrect some or all of groupings that receive to node device 400.
In step 550, control device 250 starts transmitter 210 transmissions and replys.In one embodiment, just send affirmative acknowledgement, and if successfully do not receive first packet and just send negative response if successfully receive first packet.In another embodiment, if successfully receive first packet, replying of then being sent only is affirmative acknowledgement.In another embodiment, if successfully do not receive first packet, replying of then being sent only is to negate to reply.In another embodiment, if first packet is not forwarded to node device 400, then only send negative response.
In step 560, first stop 100 receives by replying that each second station 200 sends via its receiver 140.
In step 570,150 pairs of replying of receiving of control device are counted, and this counting is stored in the storage device 160.In one embodiment, affirmative acknowledgement is counted.In another embodiment, negative response is counted.In another embodiment, respectively affirmative acknowledgement and negative response are all counted.
In step 580, control device 150 compares number of replying and the threshold value of being counted, and this threshold value is the integer greater than 1.This threshold value is stored in the storage device 160, and can be determined in advance or be received from second station 200 or from other place by receiver 140.If affirmative acknowledgement and negative response are all counted, threshold value so separately can be used for replying of each type.Alternatively, public threshold value both can be used for affirmative acknowledgement, also can be used for negative response.
According to this counting or individual count value with respect to respective threshold, flow process is got back to step 510 then, sends first packet there once more, perhaps proceeds to step 590, select new packet there, and process begins to carry out repetition from step 510 to send new grouping.
If affirmative acknowledgement is counted, then with the number P and the first threshold T of the affirmative acknowledgement counted
P(T
P＞1) compares.If P＜T
P, then carry out the repeating transmission of this first packet in step 510; And if P 〉=T
P, then carry out the transmission of new packet.Therefore, if second station 200 and the T that for example has five transmissions to reply
P=3, just will retransmit first packet as long as receive one or two affirmative acknowledgement so, even in fact this first packet may successfully be received and be forwarded to node device 400 by one or more second stations 200.
If negative response is counted, then with the number N and the second threshold value T of the negative response counted
N(T
N＞1) compares.If N＞T
N, then carry out the repeating transmission of this first packet in step 510; And if N≤T
N, then carry out the transmission of new packet.Therefore, if second station 200 and the T that for example has five transmissions to reply
N=2, just will send new packet as long as receive one or two negative response so, this is based on such hypothesis, i.e. and this first packet is successfully received and is forwarded to node device 400 up to three second stations 200.
In another embodiment, in response to the initialization of first packet and the number of retransmitting the affirmative acknowledgement that receives of adding up, and by control device 150 with itself and the 3rd threshold value T
P' (T
P'＞1) compares.If the counting that is added up is less than T
P', then carry out the further repeating transmission of first packet; Otherwise carry out the transmission of new packet.T
P' can with T
PIdentical or different.
In another embodiment, in response to the initialization of first packet and the number of retransmitting the negative response that receives of adding up, and by control device 150 with itself and the 4th threshold value T
N' (T
N'＞1) compares.If the counting that is added up surpasses T
N', then carry out the further repeating transmission of first packet; Otherwise carry out the transmission of new packet.T
N' can with T
NIdentical or different.
In another embodiment, replying of being sent can be replied the packet that receives before the packet that receives recently.This option can be raised the efficiency by when waiting for the replying of the previous data that send new data can being sent out.In addition, replying can be to replying more than one packet.This option can reduce interference by reducing the number of replying that is sent.
In another embodiment, be used for being vulnerable to time restriction to replying the time cycle of counting.In this case, if negative response is counted, if so when time restriction is expired count value surpass the 5th threshold value T
N" (1＜T wherein
N"＜T
N), just carry out the repeating transmission of first packet; If perhaps affirmative acknowledgement is counted, if so when time restriction is expired count value surpass the 6th threshold value T
P" (1＜T wherein
P"＜T
P), just carry out the repeating transmission of first packet.This option can reduce delay under following situation, for example need the long time to finish counting, if perhaps so poor so that second station 200 that receives first packet of the receiving ability at second station 200 seldom, no matter do not reply thereby almost send, be affirmative acknowledgement or negative response.
Alternatively, when determining that retransmitting first packet still is that what control device 150 can be applied to signal reliability criterion to receive replys when sending second packet.The option of using signal reliability criterion can be used for increasing the reliability of retransmitting decision.Can consider such signal reliability criterion, the number of the signal amplitude that for example receives, signal-to-jamming ratio, bit error or bit error rate (BER).
For example, signal reliability criterion can be applied to the counting to replying.In this case, have only when the signal reliability of replying satisfies signal reliability criterion, just count replying.
Reliability standard can comprise derives a weighted factor, wherein high weighted factor is distributed to have replying of high computed reliability, distributes to and has low the replying of reliability of estimating and will hang down weighted factor.So may relate to the summation of weighted factor to the counting of replying, described weighted factor can be a non integer value.Then in result that will sue for peace and the described threshold value suitable one compare so that whether decision retransmits this first packet.
As another example, for example can merge the indication (indication) of a plurality of signal reliabilities of replying of the positive or negative of same type by summation, and the reliability that merged and the reliability thresholds of the type are compared.
As another example, any one threshold value all may depend on the indication of the reliability of replying in this manual.For example, the reliability thresholds that is used for affirmative acknowledgement may depend on the indication of the reliability of negative response, and the reliability thresholds that perhaps is used for negative response may depend on the indication of the reliability of affirmative acknowledgement.
In modification of the present invention, so even when for various types of reply single reply to make closing retransmit first packet when still sending the decision of second packet, be used for the indication that one type the reliability thresholds of replying also can depend on the reliability of replying of another kind of type.
Alternatively, any one threshold value all can be from second station 200 one or be sent to first stop 100 from other place, and be stored in the storage device 160.This option can be used for making threshold value to be suitable for main system condition, for example loads.
Alternatively, any one threshold value can equal the number at second station 200, perhaps alternatively is the function of the number at second station 200.This option can be used for guaranteeing that the number of affirmative acknowledgement required before sending next packet increases along with the growth of the probability that negative response is decoded as mistakenly affirmative acknowledgement.Equally, this option can be used for guaranteeing that the number of negative response required before retransmitting increases along with the growth of the probability of correct reception.For to counting with the number at second station 200 during first stop is communicated by letter, control device 150 can monitor the signal that receives from second station 200.
Alternatively, second station 200 can be replied more than once sending.This option can be used for reducing the influence that wrong decoding is replied.
The function at second station 200 can be provided by device distributed or that be positioned at same place.
In this specification and claims, the speech before element " " or " a kind of " do not get rid of and have a plurality of such elements.In addition, speech " comprises " and does not get rid of other elements or the step that exists beyond listed element or the step.
The Reference numeral that comprises in the bracket in claims plans to help to understand, but not plans to limit.
By reading the disclosure, other modifications will be conspicuous to those skilled in the art.Such modification can comprise in the communications field known and can replace or add the further feature that uses in this feature of having described.
Claims (39)
1. one kind is sent to the method for node device (400) with packet from first stop (100), and this node device (400) is coupled to a plurality of second stations (200), and this method comprises:
-send first packet from first stop (100);
-receive first packet sent at a plurality of second stations (200);
-according to first standard, be evaluated at each second station (200) and whether successfully receive this first packet;
During-transmission is following at least one:
Send affirmative acknowledgement from each second station (200) that successfully receives first packet; And
Never each second station (200) that successfully receives first packet sends negative response;
-receive this at first stop (100) to reply;
-in more following at least one:
The number of the affirmative acknowledgement that receives and first threshold; And
The number of the negative response that receives and second threshold value;
Wherein at least one in first and second threshold values is greater than one; And
It still is to send second packet that the comparative result of-use and first threshold or second threshold value determines to retransmit first packet;
It is characterized in that, determining that retransmitting first packet still is when sending second packet, with replying that signal reliability criterion is applied to receive, wherein use signal reliability criterion and comprise that the indication of the reliability that same type is replied sues for peace, and the reliability thresholds of this summation and the type compared, acknowledgement type comprises at least one in affirmative acknowledgement and the negative response, and
Described method also comprises from least one second station (200) that successfully receives first packet this first packet is forwarded to node device (400).
2. the method for claim 1 comprises in first and second threshold values at least one signaled to first stop (100).
3. method as claimed in claim 1 or 2, wherein at least one in first and second threshold values depends on the number that is in second station (200) in communicating by letter with first stop (100).
4. the method for claim 1 also comprises:
-following at least one:
In response to sending for the first time of first packet and one or many is retransmitted the number of the affirmative acknowledgement that receives of adding up, and this number that adds up and the 3rd threshold value are compared; And
In response to sending for the first time of first packet and one or many is retransmitted the number of the negative response that receives of adding up, and this number that adds up and the 4th threshold value are compared;
Wherein at least one in third and fourth threshold value is greater than one; And
-use with the comparative result of the 3rd threshold value or the 4th threshold value and determine that repeating transmission first packet still is to send second packet.
5. method as claimed in claim 4 comprises in third and fourth threshold value at least one signaled to first stop (100).
6. method as claimed in claim 4, wherein at least one in third and fourth threshold value depends on the number that is in second station (200) in communicating by letter with first stop (100).
7. as claim 4,5 or 6 described methods, wherein the 3rd threshold value equals first threshold, and perhaps the 4th threshold value equals second threshold value.
8. the method for claim 1, wherein at least one in first and second threshold values depends on signal reliability.
9. the method for claim 1, wherein acknowledgement type comprises affirmative acknowledgement and negative response, and the reliability thresholds that wherein is used for an acknowledgement type depends on the indication of the signal reliability of another type.
10. method as claimed in claim 1 or 2 is wherein replied and is comprised affirmative acknowledgement, and this method also comprises:
-determine the number P of the affirmative acknowledgement that receives at first stop (100);
-with number P and threshold value T
P(T
P＞1) compares;
If-P＜T
P, then retransmit this first packet from first stop (100); And
If-P 〉=T
P, then send second packet from first stop (100).
11. method as claimed in claim 10 also is included in and uses signal reliability criterion when ascertaining the number P.
12. method as claimed in claim 1 or 2 is wherein replied and comprised negative response, this method also comprises:
-determine the number N of the negative response that receives at first stop (100);
-with number N and threshold value T
N(T
N＞1) compares;
If-N＞T
N, then retransmit this first packet from first stop (100); And
If-N≤T
N, then send second packet from first stop (100).
13. method as claimed in claim 12 also is included in and uses signal reliability criterion when ascertaining the number N.
14. method as claimed in claim 1 or 2, wherein first stop (100) is a travelling carriage, and second station (200) be the base station, and this method is performed during the soft handover between the base station at travelling carriage.
15. a communication system (50), this communication system (50) comprise first stop (100) and be coupled to the node device (400) at a plurality of second stations (200), described second station (200) is used for packet is sent to node device (400) from first stop (100),
Described first stop (100) comprises the transmitter installation (110) that is used to send first packet,
Each second station (200) comprising:
-be used to receive the device (240) of first packet;
-be used for assessing the device (250) that whether successfully receives this first packet according to first standard;
-be used for sending the device (250,210) of following at least one:
If successfully receive first packet, then send affirmative acknowledgement; And
If successfully do not receive first packet, then send negative response;
This first stop (100) also comprises:
-be used to receive this device of replying (140);
-be used for the device (150) of more following at least one:
The number of the affirmative acknowledgement that receives and first threshold; And
The number of the negative response that receives and second threshold value;
Wherein at least one in first and second threshold values is greater than one; And
-be used to use with the comparative result of the first threshold or second threshold value and determine to retransmit the device (150) that first packet still is transmission second packet;
It is characterized in that, described first stop also comprises and is used for determining that retransmitting first packet still is the device of replying (150) that when sending second packet signal reliability criterion is applied to receive, wherein use signal reliability criterion and comprise that the indication of the reliability that same type is replied sues for peace, and the reliability thresholds of this summation and the type compared, acknowledgement type comprises at least one in affirmative acknowledgement and the negative response
It is characterized in that, be used for successfully receiving the device (250) that first packet just is forwarded to this first packet node device (400) if each second station also comprises; And
It is characterized in that described node device (400) comprises the device (410) that is used to receive first packet of being transmitted.
16. communication system as claimed in claim 15 (50), described first stop (100) also comprise at least one the device (140,150) of signal value that is used for receiving first and second threshold values.
17. as claim 15 or 16 described communication systems (50), described first stop (100) also comprises and being used for according to selecting the device (140,150) of the value of at least one in first and second threshold values with the number that first stop (100) is in second station (200) of communicating by letter.
18. as claim 15 or 16 described communication systems (50), described first stop (100) also comprises:
-be used for following at least one device (150):
In response to sending for the first time of first packet and one or many is retransmitted the number of the affirmative acknowledgement that receives of adding up, and this number that adds up and the 3rd threshold value are compared; And
In response to sending for the first time of first packet and one or many is retransmitted the number of the negative response that receives of adding up, and this number that adds up and the 4th threshold value are compared;
Wherein at least one in third and fourth threshold value is greater than one; And
-be used to use with the comparative result of the 3rd threshold value or the 4th threshold value and determine to retransmit the device (150) that first packet still is transmission second packet.
19. communication system as claimed in claim 18 (50), wherein this first stop (100) also comprises and is used for receiving at least one the device (140,150) of signal value of third and fourth threshold values.
20. also comprising, communication system as claimed in claim 18 (50), this first stop (100) be used for according to selecting the device (140,150) of the value of at least one in third and fourth threshold value with the number that first stop (100) is in second station (200) of communicating by letter.
21. communication system as claimed in claim 15 (50), wherein at least one in first and second threshold values depends on signal reliability.
22. communication system as claimed in claim 15 (50), wherein acknowledgement type comprises affirmative acknowledgement and negative response, and the reliability thresholds that wherein is used for an acknowledgement type depends on the indication of the signal reliability of another type.
23. as claim 15 or 16 described communication systems (50), wherein second station (200) comprise the device (250,210) that is used to send affirmative acknowledgement, and first stop (100) also comprises:
-be used to determine the device (150) of the number P of the affirmative acknowledgement that receives;
-be used for number P and threshold value T
P(T
P＞1) device that compares (150);
If-be used for P＜T
PIf just retransmit this first packet and P 〉=T
PJust send the device (150,110) of second packet.
24. communication system as claimed in claim 23 (50), first stop (100) also comprise the device (150) that is used for using signal reliability criterion when ascertaining the number P.
25. as claim 15 or 16 described communication systems (50), wherein second station (200) comprise the device (250,210) that is used to send negative response, and first stop (100) also comprises:
-be used to determine the device (150) of the number N of the negative response that receives;
-be used for number N and threshold value T
N(T
N＞1) device that compares (150);
If-be used for N＞T
NIf just retransmit this first packet and N≤T
NJust send the device (150,110) of second packet.
26. communication system as claimed in claim 25 (50), first stop (100) also comprise the device (150) that is used for using signal reliability criterion when ascertaining the number N.
27. one kind for the first stop (100) that uses in communication system (50), this communication system (50) comprises the node device (400) that is coupled to a plurality of second stations (200), described second station (200) is used for packet is sent to node device (400) from first stop (100), and this first stop (100) comprising:
-be used for sending the transmitter installation (110) of first packet to second station (200);
-be used for receiving the device (140) of replying from second station (200);
-be used for the device (150) of more following at least one:
The number of the affirmative acknowledgement that receives and first threshold; And
The number of the negative response that receives and second threshold value;
Wherein at least one in first and second threshold values is greater than one; And
-be used to use with the comparative result of the first threshold or second threshold value and determine to retransmit the device (150) that first packet still is transmission second packet;
It is characterized in that, be used for determining that retransmitting first packet still is the device of replying that when sending second packet signal reliability criterion is applied to receive, wherein use signal reliability criterion and comprise that the indication of the reliability that same type is replied sues for peace, and the reliability thresholds of this summation and the type compared, acknowledgement type comprises at least one in affirmative acknowledgement and the negative response.
28. first stop as claimed in claim 27 (100) also comprises at least one the device (140,150) of signal value that is used for receiving first and second threshold values.
29., comprise being used for according to selecting the device (140,150) of the value of at least one in first and second threshold values with the number that first stop (100) is in second station (200) of communicating by letter as claim 27 or 28 described first stops (100).
30. first stop as claimed in claim 27 (100) also comprises:
-be used for following at least one device (150):
In response to the number that sends the affirmative acknowledgement that receives of adding up the first time of first packet, and this number that adds up and the 3rd threshold value compared; And
In response to the number that sends the negative response that receives of adding up the first time of first packet, and this number that adds up and the 4th threshold value compared;
Wherein at least one in third and fourth threshold value is greater than one; And
-be used to use with the comparative result of the 3rd threshold value or the 4th threshold value and determine to retransmit the device (150) that first packet still is transmission second packet.
31. first stop as claimed in claim 30 (100) also comprises being used for receiving at least one the device (140,150) of signal value of third and fourth threshold value.
32. first stop as claimed in claim 30 (100) comprises being used for according to selecting the device (140,150) of the value of at least one in third and fourth threshold value with the number that first stop (100) is in second station (200) of communicating by letter.
33. as the described first stop of claim 30,31 or 32 (100), wherein the 3rd threshold value equals first threshold, perhaps the 4th threshold value equals second threshold value.
34. first stop as claimed in claim 27 (100), wherein at least one in first and second threshold values depends on signal reliability.
35. first stop as claimed in claim 27 (100), wherein acknowledgement type comprises affirmative acknowledgement and negative response, and the reliability thresholds that wherein is used for an acknowledgement type depends on the indication of the signal reliability of another type.
36., also comprise as claim 27 or 28 described first stops (100):
-be used to determine the device (150) of the number P of the affirmative acknowledgement that receives;
-be used for number P and threshold value T
P(T
P＞1) device that compares (150);
If-be used for P＜T
PIf just retransmit this first packet and P 〉=T
PJust send the device (150,110) of second packet.
37. first stop as claimed in claim 36 (100) also comprises the device (150) that is used for using signal reliability criterion when ascertaining the number P.
38., also comprise as claim 27 or 28 described first stops (100):
-be used to determine the device (150) of the number N of the negative response that receives;
-be used for number N and threshold value T
N(T
N＞1) device that compares (150);
If-be used for N＞T
NIf just retransmit this first packet and N≤T
NJust send the device (150,110) of second packet.
39. first stop as claimed in claim 38 (100) also comprises the device (150) that is used for using signal reliability criterion when ascertaining the number N.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0410110A GB0410110D0 (en) | 2004-05-06 | 2004-05-06 | Method, system and station for communicating data packets |
| GB0410110.1 | 2004-05-06 | ||
| GB0413591.9 | 2004-06-17 | ||
| GB0413591A GB0413591D0 (en) | 2004-05-06 | 2004-06-17 | Method, system and station for communicating data packets |
| PCT/IB2005/051477 WO2005109726A1 (en) | 2004-05-06 | 2005-05-05 | Method, system and station for communicating data packets using arq |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1951056A CN1951056A (en) | 2007-04-18 |
| CN1951056B true CN1951056B (en) | 2010-12-29 |
Family
ID=32482777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800142957A Active CN1951056B (en) | 2004-05-06 | 2005-05-05 | Method, system and station for communicating data packets using ARQ |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN1951056B (en) |
| AT (1) | ATE492955T1 (en) |
| DE (1) | DE602005025472D1 (en) |
| GB (2) | GB0410110D0 (en) |
| TW (1) | TW200620881A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0876023A1 (en) * | 1997-04-30 | 1998-11-04 | Sony Corporation | Transmitter and transmitting method, receiver and receiving method, and transceiver and transmitting/receiving method |
| CN1402463A (en) * | 2001-08-22 | 2003-03-12 | 松下电器产业株式会社 | Method and apparatus for automatic request repeat of sending and receiving |
| CN1494781A (en) * | 2002-01-07 | 2004-05-05 | Ħ��������˾ | Method and apparatus for frame determination in ARQ systems |
-
2004
- 2004-05-06 GB GB0410110A patent/GB0410110D0/en not_active Ceased
- 2004-06-17 GB GB0413591A patent/GB0413591D0/en not_active Ceased
-
2005
- 2005-05-03 TW TW094114320A patent/TW200620881A/en unknown
- 2005-05-05 DE DE602005025472T patent/DE602005025472D1/en active Active
- 2005-05-05 CN CN2005800142957A patent/CN1951056B/en active Active
- 2005-05-05 AT AT05733773T patent/ATE492955T1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0876023A1 (en) * | 1997-04-30 | 1998-11-04 | Sony Corporation | Transmitter and transmitting method, receiver and receiving method, and transceiver and transmitting/receiving method |
| CN1402463A (en) * | 2001-08-22 | 2003-03-12 | 松下电器产业株式会社 | Method and apparatus for automatic request repeat of sending and receiving |
| CN1494781A (en) * | 2002-01-07 | 2004-05-05 | Ħ��������˾ | Method and apparatus for frame determination in ARQ systems |
Non-Patent Citations (1)
| Title |
|---|
| US 2003/0005382 A1,说明书第[0019]-[0025],[0033]-[0040]段、权利要求9,17、附图2-4. |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0413591D0 (en) | 2004-07-21 |
| CN1951056A (en) | 2007-04-18 |
| GB0410110D0 (en) | 2004-06-09 |
| DE602005025472D1 (en) | 2011-02-03 |
| TW200620881A (en) | 2006-06-16 |
| ATE492955T1 (en) | 2011-01-15 |
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