CN105357763A - Communication method and device in time-division duplex system - Google Patents
Communication method and device in time-division duplex system Download PDFInfo
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- CN105357763A CN105357763A CN201510734048.XA CN201510734048A CN105357763A CN 105357763 A CN105357763 A CN 105357763A CN 201510734048 A CN201510734048 A CN 201510734048A CN 105357763 A CN105357763 A CN 105357763A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
Abstract
The embodiment of the invention provides a communication method and device in a time-division duplex system, wherein the method specifically comprises the following step that: user equipment is communicated with a base station through wireless frames, wherein the ratio of uplink sub-frames to downlink sub-frames in the wireless frames is 8:1. By means of the embodiment of the invention, the occupation ratio of the uplink sub-frames in the wireless frames can be increased; and thus, large uplink service volume requirements of a private network system can be satisfied.
Description
Technical field
The present invention relates to communication technical field, particularly relate to the communication means in a kind of tdd systems and device.
Background technology
Long Term Evolution (LongTermEvolution, LTE) technical support time division duplex (TimeDivisionDuplexing, TDD) pattern.Tdd mode refers to that uplink downlink uses same working band, and the different time intervals carries out the pattern of the transmission of uplink and downlink signals.
In existing TDD system, radio frames length is 10ms, and this radio frames specifically comprises sub-frame of uplink, descending sub frame and special subframe three classes totally 10 subframes, and each subframe is wherein 1ms.Different sub-frame of uplink can be adapted to the demand of different up-downgoing traffic carrying capacitys from the proportioning of descending sub frame.
With reference to table 1, show the structural representation of the radio frames of existing 7 kinds of sub-frame of uplink and descending sub frame proportioning, wherein D represents descending sub frame, and S represents special subframe, and U represents sub-frame of uplink.
Table 1
In 7 kinds of sub-frame of uplink shown in table 1 and the proportioning of descending sub frame, in proportioning 0, sub-frame of uplink accounting is the highest, and its accounting is 60%.But, some private network systems (the ammeter Data-Statistics system as electrical network) are larger for the demand of upstream traffic at present, and less for the demand of downlink traffic, therefore, the proportioning of existing sub-frame of uplink and descending sub frame can not meet the demand of above-mentioned private network system.
Summary of the invention
Embodiment of the present invention technical problem to be solved is to provide the communication means in a kind of tdd systems, so that the accounting of sub-frame of uplink in radio frames can be improved, thus the demand that the upstream traffic that can meet private network system is larger.
Accordingly, the embodiment of the present invention additionally provides the communicator in a kind of tdd systems, in order to ensure the implementation and application of said method.
In order to solve the problem, the invention discloses the communication means in a kind of tdd systems, comprising:
Subscriber equipment carries out the communication between base station by radio frames; Wherein, in described radio frames, the proportioning of sub-frame of uplink and descending sub frame is 8:1.
Preferably, the structure of described radio frames is DSUUUUUUUU; Wherein, D is subframe 0, represents descending sub frame; S is subframe 1, represents special subframe; U is subframe 2 to subframe 9, represents sub-frame of uplink.
Preferably, described method also comprises:
Described subscriber equipment employing window search time carries out Cell searching; Wherein, described search time window length be more than or equal to the length of described radio frames.
Preferably, described method also comprises:
Described subscriber equipment receives the uplink authorization dispatch command from described base station; Wherein, carry 4 up indication bit in described uplink authorization dispatch command, described 4 up indication bit are used to indicate 4 the described sub-frame of uplink needed to base-station transmission data.
Preferably, described method also comprises:
Described subscriber equipment adopts two described sub-frame of uplink to send the feedback information of described control information after receiving the control information from described base station.
Preferably, described method also comprises:
Described subscriber equipment receives the first feedback command from described base station; Wherein, described first feedback command carries 4 up index bits, and whether 4 described sub-frame of uplink that described 4 up index bits are used to indicate Uplink Shared Channel corresponding transmit correctly.
Preferably, described method also comprises:
Described subscriber equipment receives the second feedback command from described base station; Wherein, group character is carried in described second feedback command;
Described subscriber equipment is according to 4 described sub-frame of uplink corresponding to described group character determination uplink feedback.
Preferably, described subscriber equipment use the number of ascending HARQ course to equal 12.
According to another aspect of the present invention, disclose the communicator in a kind of tdd systems, described device is positioned at user equipment side, comprising:
Communication module, for carrying out the communication between base station by radio frames; Wherein, in described radio frames, the proportioning of sub-frame of uplink and descending sub frame is 8:1.
Preferably, the structure of described radio frames is DSUUUUUUUU; Wherein, D is subframe 0, represents descending sub frame; S is subframe 1, represents special subframe; U is subframe 2 to subframe 9, represents sub-frame of uplink.
Preferably, described device also comprises:
Cell search module, carries out Cell searching for adopting search time window; Wherein, described search time window length be more than or equal to the length of described radio frames.
Preferably, described device also comprises:
First receiver module, for receiving the uplink authorization dispatch command from described base station; Wherein, carry 4 the first up indication bit in described uplink authorization dispatch command, described 4 the first up indication bit are used to indicate 4 the described sub-frame of uplink needed to base-station transmission data.
Preferably, described device also comprises:
Uplink feedback module, after receiving the control information from described base station, adopts two described sub-frame of uplink to send the feedback information of described control information.
Preferably, described device also comprises:
Second receiver module, for receiving the first feedback command from described base station, wherein, described first feedback command carries 4 up index bits, and whether 4 described sub-frame of uplink that described 4 up index bits are used to indicate Uplink Shared Channel corresponding transmit correctly.
Preferably, described device also comprises:
3rd receiver module, for receiving the second feedback command instruction from described base station; Wherein, group character is carried in described second feedback command instruction;
Determination module, for according to 4 described sub-frame of uplink corresponding to described group character determination uplink feedback.
Preferably, described device is positioned at user equipment side, described device use the number of ascending HARQ course to equal 12.
Compared with prior art, the embodiment of the present invention comprises following advantage:
In the radio frames that the embodiment of the present invention uses, the proportioning of sub-frame of uplink and descending sub frame can be 8:1, the accounting of sub-frame of uplink in radio frames can be made to be 80%, this is 60% relative to the highest accounting of sub-frame of uplink in radio frames in existing about 7 kinds subframe proportioning modes, the embodiment of the present invention can improve the accounting of sub-frame of uplink in radio frames, thus the demand that the upstream traffic that can meet private network system is larger.
Accompanying drawing explanation
Fig. 1 is the structural representation of the radio frames of communication means embodiment one in a kind of tdd systems of the present invention;
Fig. 2 is the structural representation of the communication device embodiment two in a kind of tdd systems of the present invention;
Fig. 3 is the structural representation of the communication device embodiment three in a kind of tdd systems of the present invention;
Fig. 4 is the structural representation of the communication device embodiment four in a kind of tdd systems of the present invention;
Fig. 5 is the structural representation of the communication device embodiment five in a kind of tdd systems of the present invention; And
Fig. 6 is the structural representation of the communication device embodiment six in a kind of tdd systems of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Embodiment one
In communication means embodiment one in a kind of tdd systems that the embodiment of the present invention provides, said method specifically can comprise: carry out the communication between subscriber equipment and base station by radio frames; Wherein, in described radio frames, the proportioning of sub-frame of uplink and descending sub frame can be 8:1.
In the embodiment of the present invention, sub-frame of uplink in above-mentioned radio frames and the proportioning of descending sub frame are 8:1, namely specifically can comprise in above-mentioned radio frames: descending sub frame, a special subframe and 8 sub-frame of uplink, therefore, the accounting of sub-frame of uplink in radio frames can be 80%.
The embodiment of the present invention can be applied to comparatively large to upstream traffic demand, in the less communication system (as private network system) of downlink traffic demand, in order to meet the traffic needs of above-mentioned private network system.Such as, in the ammeter Data-Statistics system of electrical network, downlink traffic specifically can comprise: network side (as base station) issues ammeter value to ammeter and reports instruction, upstream traffic specifically can comprise: ammeter reports corresponding ammeter value to network side, because multiple ammeter needs periodically to report current ammeter value to network side, therefore need to take more sub-frame of uplink, and the embodiment of the present invention can meet the traffic needs of this ammeter Data-Statistics system.
In a kind of embodiment of the embodiment of the present invention, above-mentioned wireless frame structure can be DSUUUUUUUU; Wherein, D is subframe 0, represents descending sub frame; S is subframe 1, represents special subframe; U is subframe 2 to subframe 9, represents sub-frame of uplink.
With reference to Fig. 1, show the structural representation of the radio frames of the communication means embodiment one in a kind of tdd systems provided by the invention, it specifically can comprise: descending sub frame 101, special subframe 102 and sub-frame of uplink 103.As can be seen from the structural representation of above-mentioned radio frames, sub-frame of uplink 103 is 8:1 with the proportioning of descending sub frame 101.
Be appreciated that, above-mentioned wireless frame structure DSUUUUUUUU is just as a kind of example of wireless frame structure, the restriction of the embodiment of the present invention for above-mentioned wireless frame structure can not be interpreted as, in fact, all proportionings meeting sub-frame of uplink and descending sub frame are the wireless frame structure of 8:1 is all feasible, and the concrete structure of the embodiment of the present invention to above-mentioned radio frames is not limited.
To sum up, in the radio frames that the embodiment of the present invention uses, the proportioning of sub-frame of uplink and descending sub frame can be 8:1, the accounting of sub-frame of uplink in radio frames can be made to be 80%, this is 60% relative to the highest accounting of sub-frame of uplink in radio frames in existing about 7 kinds subframe proportioning modes, the embodiment of the present invention can improve the accounting of sub-frame of uplink in radio frames, thus the demand that the upstream traffic that can meet private network system is larger.
Embodiment two
Communication means in a kind of tdd systems of the present embodiment, on the basis of above-described embodiment one, can also comprise following technical scheme further.
The said method of the present embodiment can also comprise: subscriber equipment employing window search time carries out Cell searching; Wherein, above-mentioned search time window length be more than or equal to the length of above-mentioned radio frames.
Relative to embodiment one, subscriber equipment in the present embodiment in cell search process adopt the length of time window can be more than or equal to the length of above-mentioned radio frames, the length of assumed wireless frame is 10ms, then the length of above-mentioned time search window can be 10ms, also can be the value that 20ms, 30ms etc. are greater than 10ms.
In a wireless communication system, for subscriber equipment, cell search process can realize time synchronized between itself and base station and Frequency Synchronization.In cell search process, subscriber equipment can adopt above-mentioned time window to carry out cyclic search to the data received, master sync signal (PrimarySynchronizationSignal is obtained to detect in the N number of continuous subframes obtained from search, and auxiliary synchronous signals (SecondarySynchronizationSignal, SSS) PSS); Wherein, N can represent the length of above-mentioned time window.
PSS is carried in special subframe S, SSS is carried in descending sub frame D, and descending sub frame D and special subframe S is respectively subframe 0 and subframe 1, then PSS and SSS is arranged in the front field of above-mentioned radio frames, like this, if the value of N is existing 5ms, subscriber equipment then cannot ensure to include complete PSS and SSS in searched time window, and then then cannot ensure to search community.And N is set to the value being more than or equal to 10ms by the present embodiment, can ensure to comprise complete PSS and SSS in N number of continuous subframes of the time window searched.
To sum up, in communication means in a kind of tdd systems that the embodiment of the present invention provides, subscriber equipment in cell search process adopt the length of time window to be more than or equal to the length of described radio frames, therefore search in the N number of continuous subframes obtained and can comprise a complete radio frames, and can therefrom measure complete PSS and SSS, to make subscriber equipment can synchronous with in base station acquisition time and frequency, therefore ensure that the validity of the radio frames that subscriber equipment obtains at every turn.
Embodiment three
Communication means in a kind of tdd systems of the present embodiment, on the basis of above-described embodiment one or embodiment two, can also comprise following alternatives further.
The said method of the present embodiment can also comprise: subscriber equipment receives the uplink authorization dispatch command from base station; Wherein, can carry 4 up indication bit in above-mentioned uplink authorization dispatch command, above-mentioned 4 up indication bit can be used for 4 the described sub-frame of uplink indicating needs to base-station transmission data.
For sub-frame of uplink be 8, descending sub frame to be 1 and special subframe the be situation of 1, the embodiment of the present invention can, in uplink authorization dispatch command, make each descending sub frame and special subframe carry the instruction of the scheduling of resource to 4 sub-frame of uplink respectively.Particularly, base station can send uplink authorization dispatch command to subscriber equipment, and subscriber equipment can receive the above-mentioned uplink authorization dispatch command from base station.
In specific implementation, the form of descending control information format 0 (DownlinkControlInformation0, DCI0) is adopted to transmit above-mentioned uplink authorization dispatch command.Wherein, 2 reserved bit in 33 payload bits in 2 up index bits and DCI0 being used to indicate sub-frame of uplink scheduling of resource existing in DCI0 can be merged, merge 4 described sub-frame of uplink that 4 the up indication bit obtained can be used for indicating needs to base-station transmission data.
Suppose that the subframe numbers of the descending sub frame or special subframe for carrying upstream dispatching instructions is n, up indication bit in the upstream dispatching instructions then this descending sub frame or special subframe carried can be used for instruction dispatching uplink subframe n+k1, k1 can be used for representing the uplink scheduling authorization set comprising 4 elements, and these 4 elements are corresponding with 4 sub-frame of uplink respectively.
Exemplary, the embodiment of the present invention take frame structure as DSUUUUUUUU is example, is illustrated the uplink authorization scheduling of the embodiment of the present invention.
With reference to table 1, show the example of a kind of uplink scheduling authorization set of the embodiment of the present invention, wherein, proportioning mode 7 represents that the sub-frame of uplink of the embodiment of the present invention and the proportioning of descending sub frame are the mode of 8:1, assumed wireless frame structure is DSUUUUUUUU, the subframe numbers of descending sub frame D is 0, the set k1 of descending sub frame D
14 elements comprised can be: 4,5,6 and 7, then the sub-frame of uplink n+k that the upstream dispatching instructions instruction that descending sub frame D carries is dispatched can be: 4,5,6 and 7; In addition, the subframe numbers of special subframe S is 1, then the set k1 of special subframe S
24 elements comprised can be: 7,8,11 and 12, then the sub-frame of uplink n+k1 of the upstream dispatching instructions instruction scheduling of carrying on special subframe S is: 8,9,12 (2) and 13 (3).
Table 1
Be appreciated that, the value of the element of k is gathered only as a kind of example that the uplink authorization of the embodiment of the present invention is dispatched in above-mentioned example, and be not understood to the embodiment of the present invention for the one of 4 sub-frame of uplink indicated by above-mentioned 4 up indication bit and limit, in fact, other uplink subframe scheduling can be opened and can avoid sub-frame of uplink conflict the value of element of set k be all feasible, such as: k1
1element value can be: 5,6,7 and 8, k1
2element value can be: 9,11,12 and 13 is also feasible, and therefore, the embodiment of the present invention is not limited 4 sub-frame of uplink indicated by above-mentioned 4 up indication bit.
To sum up, in communication means in a kind of tdd systems that the embodiment of the present invention provides, subscriber equipment receive from carrying 4 up indication bit in the upstream dispatching instructions of base station, these 4 up indication bit are respectively used to indicate 4 sub-frame of uplink needed to base-station transmission data, therefore, it is possible to realize the mandate scheduling of 8 sub-frame of uplink.
Embodiment four
On the basis of any embodiment of control method in above-described embodiment one to embodiment three of the base station internal memory of the present embodiment, following alternatives can also be comprised further.
The said method of the present embodiment can also comprise: subscriber equipment receives from after the control information of base station, adopts two above-mentioned sub-frame of uplink to send the feedback information of above-mentioned control information.
In the embodiment of the present invention, subscriber equipment receives from after the data message of base station, need the feedback information being sent above-mentioned data message by sub-frame of uplink to base station, due to a descending sub frame and a special subframe can be comprised in the radio frames in the embodiment of the present invention, therefore, the feedback information that two sub-frame of uplink send control information can be selected, wherein, the feedback information of control information is specifically as follows and confirms to answer (Acknowledgement, ACK) feed back, also can be negative acknowledge (NegativeACKnowledgment, NACK) feed back, the feedback information of the embodiment of the present invention to control information is not specifically limited.
In specific implementation, suppose that above-mentioned control information is carried on the descending sub frame or special subframe that subframe numbers is n, then subframe numbers can be selected to be the feedback information that the sub-frame of uplink of n+k2 sends above-mentioned control information, the value of p be greater than 0 integer.
With reference to table 2, show the example of a kind of downstream feedback of the embodiment of the present invention, wherein, proportioning mode 7 represents that the sub-frame of uplink of the embodiment of the present invention and the proportioning of descending sub frame are the mode of 8:1, assumed wireless frame structure is DSUUUUUUUU, and the subframe numbers of descending sub frame D is 0, then k2
1value can be 4, namely adopt subframe numbers be 4 sub-frame of uplink send the feedback information of control information that above-mentioned descending sub frame D carries; The subframe numbers of special subframe S is 1, then k2
2value can be 4, namely can adopt subframe numbers be 5 sub-frame of uplink to send on above-mentioned special subframe S the feedback information of the control information of carrying.
Table 2
Be appreciated that, in above-mentioned example, the value of k2 is all only as a kind of example of the embodiment of the present invention, and is not understood to be that one to the embodiment of the present invention limits, in fact, other k2 values that may be used for the feedback message indicating sub-frame of uplink to send control information also are fine, such as: k2
1value can be 5, namely adopt subframe numbers be 5 sub-frame of uplink send the feedback information of control information that above-mentioned descending sub frame D carries; K2
2value can be 6, namely can adopt subframe numbers be 7 sub-frame of uplink to send on above-mentioned special subframe S the feedback information of the control information of carrying; The embodiment of the present invention is to k2
1and k2
2value be not specifically limited.
To sum up, in communication means in a kind of tdd systems that the embodiment of the present invention provides, subscriber equipment can adopt two sub-frame of uplink to carry out the feedback message of the control information of bearing downlink subframe and special subframe carrying, therefore, it is possible to realize the feedback of descending sub frame and special subframe.
Embodiment five
On the basis of any embodiment of control method in above-described embodiment one to embodiment four of the base station internal memory of the present embodiment, following alternatives can also be comprised further.
The said method of the present embodiment can also comprise: subscriber equipment receives the first feedback command from base station, above-mentioned first feedback command carries 4 up index bits, and whether above-mentioned 4 up index bits may be used for indicating 4 described sub-frame of uplink corresponding to Uplink Shared Channel to transmit correctly.
For sub-frame of uplink be 8, descending sub frame is the situation of 1 and special subframe, the embodiment of the present invention can carry the instruction of 4 above-mentioned sub-frame of uplink corresponding to uplink feedback respectively by descending sub frame and special subframe, wherein, the instruction content of uplink feedback is specifically as follows ACK feedback, also can feed back for NACK, the concrete instruction content of the embodiment of the present invention to uplink feedback is not limited.
In specific implementation, the form of DCI0 can be adopted to transmit above-mentioned 4 up index bits.Wherein, can using 4 reserved bit in the payload bit of 33 of DCI0 as 4 up index bits, to indicate 4 the described sub-frame of uplink needed to base-station transmission data.
Suppose that the subframe numbers of the descending sub frame or special subframe for carrying 4 up index bits is n, 4 the up index bits then this descending sub frame or special subframe carried can be used for the sub-frame of uplink n+k3 indicating uplink feedback corresponding, wherein k3 can be used for representing the uplink retransmission set comprising 4 elements, and these 4 elements are corresponding with 4 sub-frame of uplink respectively.
With reference to table 3, show the example of a kind of uplink feedback of the embodiment of the present invention, wherein, proportioning mode 7 represents that the sub-frame of uplink of the embodiment of the present invention and the proportioning of descending sub frame are the mode of 8:1, assumed wireless frame structure is DSUUUUUUUU, the subframe numbers of descending sub frame D is 0, the set k3 of descending sub frame D
14 elements comprised can be: 4,5,6 and 7, then the sub-frame of uplink n+k3 that on descending sub frame D, the uplink feedback of 4 the second up indication bit instructions of carrying is corresponding can be: 4,5,6 and 7; Suppose that the subframe numbers of special subframe S is 1, the set k3 of special subframe S
24 elements comprised can be: 7,8,11 and 12, then the sub-frame of uplink n+k3 that on special subframe S, the uplink feedback of 4 the second up indication bit instructions of carrying is corresponding can be: 8,9,12 (2) and 13 (3).
Table 3
Be appreciated that the set k3 in above-mentioned example
1, k3
2the value of element just as a kind of example of the embodiment of the present invention, and be not understood to limit the one of the embodiment of the present invention, in fact, other may be used for instruction dispatching uplink subframe scheduling, and the scheduling of sub-frame of uplink is not conflicted the value of element be also feasible, therefore, the concrete value of the embodiment of the present invention to set k3 is not limited.
To sum up, in communication means in a kind of tdd systems that the embodiment of the present invention provides, subscriber equipment receive from base station first feedback command, above-mentioned first feedback command carries 4 up index bits, these 4 up index bits are used to indicate 4 above-mentioned sub-frame of uplink corresponding to uplink feedback, therefore, it is possible to realize the feedback of 8 sub-frame of uplink.
Embodiment six
On the basis of any embodiment of control method in above-described embodiment one to embodiment four of the base station internal memory of the present embodiment, following alternatives can also be comprised further.
The said method of the present embodiment can also comprise: subscriber equipment receives the second feedback command instruction from base station; Wherein, group character can be carried in above-mentioned second feedback command instruction; Above-mentioned subscriber equipment is according to 4 above-mentioned sub-frame of uplink corresponding to above-mentioned group character determination uplink feedback.
In a kind of application example of the present invention, above-mentioned group character can be designated as I
pHICH, can have 4 groupings, be also I
pHICHfour kinds of values can be had, be respectively: 0,1,2 and 3, wherein, work as I
pHICHwhen value is 3, namely represent that the sub-frame of uplink that current feedback is corresponding is subframe 2 or subframe 5; Work as I
pHICHwhen value is 2, namely represent that the sub-frame of uplink that current feedback is corresponding is subframe 3 or subframe 6; Work as I
pHICHwhen value is 1, namely represent that the sub-frame of uplink that current feedback is corresponding is subframe 4 or subframe 9; Work as I
pHICHwhen value is 0, namely represent that the sub-frame of uplink that current feedback is corresponding is subframe 7 or subframe 8.
Suppose that subscriber equipment receives the second feedback command on descending sub frame or special subframe, then according to the I carried in this second feedback command instruction
pHICHvalue, can determine that feeding back corresponding sub-frame of uplink is subframe m, the k4 value corresponding with m obtained by searching uplink feedback correspondence table, determines the re-transmission of corresponding subframe m on subframe m+k4 or does not pass.
With reference to table 4, show the example of a kind of uplink feedback of the embodiment of the present invention, wherein, proportioning mode 7 represents that the sub-frame of uplink of the embodiment of the present invention and the proportioning of descending sub frame are the mode of 8:1, and the value corresponding to each subframe of proportioning mode 7 correspondence can think the value of the k4 that this subframe is corresponding.Assumed wireless frame structure is DSUUUUUUUU.
If the I carried in current second feedback command instruction
pHICHvalue is 3, then can determine that sub-frame of uplink corresponding to uplink retransmission is subframe 2 or subframe 5, the table of comparisons 4, the k4 of subframe 2 correspondence
1be 8, the k4 of subframe 5 correspondence
4be 6, therefore can determine at the upper I received of subframe 0 (2+8)
pHICHthe uplink retransmission instruction of subframe 2 that corresponding is, or at the upper I received of subframe 1 (5+6)
pHICHthe uplink retransmission instruction of subframe 5 that corresponding is;
If the I carried in current second feedback command instruction
pHICHvalue is 2, then can determine that sub-frame of uplink corresponding to uplink retransmission is subframe 3 or subframe 6, the table of comparisons 4, the k4 of subframe 3 correspondence
2be 7, the k4 of subframe 6 correspondence
5be 5, therefore can determine at the upper I received of subframe 0 (3+7)
pHICHthe uplink retransmission instruction of subframe 3 that corresponding is, or at the upper I received of subframe 1 (6+5)
pHICHthe re-transmission instruction of subframe 6 that corresponding is;
If the I carried in current second feedback command instruction
pHICHvalue is 1, represents that sub-frame of uplink corresponding to current uplink retransmission is subframe 4 or subframe 9, the table of comparisons 4, the k4 of subframe 4 correspondence
3be 7, the k4 of subframe 9 correspondence
8be 2, therefore can determine at the upper I received of subframe 0 (4+6)
pHICHthe uplink retransmission instruction of subframe 4 that corresponding is; Or at the upper I received of subframe 1 (9+2)
pHICHthe uplink retransmission instruction of subframe 9 that corresponding is;
If the I carried in current second feedback command instruction
pHICHvalue is 0, represents that sub-frame of uplink corresponding to current uplink retransmission is subframe 7 or subframe 8, the table of comparisons 4, the k4 of subframe 7 correspondence
6be 3, the k4 of subframe 8 correspondence
7be 3, therefore can determine at the upper I received of subframe 0 (7+3)
pHICHthe uplink retransmission instruction of subframe 7 that corresponding is, or at the upper I received of subframe 1 (8+3)
pHICHthe uplink retransmission instruction of subframe 8 that corresponding is.
Table 4
Be appreciated that, a kind of example of value just to the value of k4 in the embodiment of the present invention of above-mentioned k4, and the one that should not be understood as the value of the k4 to the embodiment of the present invention limits, in fact, other may be used for indicating the subframe of carrying feedback information, and sub-frame of uplink is not conflicted the value of element be also feasible, the value of k4 is determined voluntarily by those skilled in the art, and the embodiment of the present invention does not limit it at this.
Meanwhile, subframe 0 and subframe 1 carry respectively the feedback to 4 sub-frame of uplink, with reference to table 5, show m of the present invention
ia kind of example of value, wherein, m
irepresent the number of the sub-frame of uplink feedback that subframe carries, i represents subframe numbers, the m of corresponding subframe
ivalue can be: m
0be 4, m
1be 4,
Table 5
To sum up, communication means in a kind of tdd systems that the embodiment of the present invention provides, subscriber equipment can receive the second feedback command from base station, and 4 above-mentioned sub-frame of uplink that the above-mentioned group character determination uplink feedback carried in foundation the second feedback command is corresponding, therefore, it is possible to realize the feedback of 8 sub-frame of uplink.
Embodiment seven
On the basis of any embodiment of control method in above-described embodiment one to embodiment six of the base station internal memory of the present embodiment, following alternatives can also be comprised further.
In the present embodiment, uplink hybrid automatic repeat request that subscriber equipment uses (HybridAutomaticRepeatreQuest, HARQ) number of process can equal 12, wherein, the operation of an ascending HARQ course execution specifically comprises: receive the transmission block (TransportBlock from base station from subscriber equipment, TB) upstream dispatching instructions, to the ACK/NACK information receiving base station and be directed to this TB, arrive subscriber equipment again and retransmit TB, until receive the ACK information for this TB according to nack message.
With reference to table 6, show the sequential signal of the course of work of a kind of ascending HARQ course of the embodiment of the present invention, this course of work relates to the transmitting procedure of employing 12 ascending HARQ courses to radio frames DSUUUUUUUU and processes, above-mentioned 12 ascending HARQ courses specifically can comprise: p0 to p11, wherein, p0-N frame subframe 4, p1-N frame subframe 5, p2-N frame subframe 6, p3-N frame subframe 7, p4-N frame subframe 8, p5-N frame subframe 9, p6-N+1 frame subframe 2, p7-N+1 subframe 3, p8-N+1 frame subframe 2, p9-N+1 subframe 3, p10-N+1 frame subframe 4, p11-N+1 subframe 5,
The above-mentioned course of work specifically can comprise following process step:
Step S1, p0, p1, p2 and p3 receive PDCCHDCI0 from base station in the subframe 0 of current wireless frame N frame, and this PDCCHDCI0 indicates subframe 4, subframe 5, subframe 6 and subframe 7 to send TB; P4, p5, p6 and p7 receive the PDCCHDCI0 from base station in the subframe 1 of radio frames N frame, and this PDCCHDCI0 indicates subframe 8, subframe 9, subframe 11 and subframe 12 to send TB;
Then p0, p1, p2 and p3 send TB in the subframe 4 of radio frames N frame, subframe 5, subframe 6 and subframe 7 to base station;
And p4, p5, p6 and p7 send TB in the subframe 2 of the subframe 8 of radio frames N frame, subframe 9 and radio frames N+1 frame and subframe 3 to base station;
Step S2, p8, p9, p10 and p11 receive PDCCHDCI0 from base station in the subframe 0 of N+1 frame, and this PDCCHDCI0 indicates the subframe 4 of N+1 frame, subframe 5, subframe 6 and subframe 7 to send TB; P1, p3 also have received feedback information in the subframe 1 of radio frames N+1 frame, the TB that the instruction of this feedback information p1, p3 send in subframe 5 and the subframe 7 of radio frames N frame needs to retransmit, P0, p1, p2 and p3 receive the PDCCHDCI0 from base station in the subframe 1 of radio frames N+1 frame, and this PDCCHDCI0 indicates in the subframe 8 of radio frames N+1 frame, radio frames N+1 frame subframe 9, the subframe 2 of radio frames N+2 frame and the subframe 3 of radio frames N+2 frame and sends TB;
Then p8, p9, p10 and p11 send TB in the subframe 4 of radio frames N+1 frame, subframe 5, subframe 6 and subframe 7 to base station;
P0 and p2 sends TB in the subframe 2 of the subframe 8 of radio frames N+1 frame, radio frames and N+2 frame to base station;
And p1 and p3 retransmits TB in the subframe 9 of radio frames N+1 frame and the subframe 3 of radio frames N+2 frame to base station;
Step S3, p5, p7 are at subframe 0 receiving feedback information of radio frames N+2 frame, the TB that the instruction of this feedback information p5, p7 send in the subframe 9 of radio frames N frame and the subframe 3 of radio frames N+1 frame needs to retransmit, p4, p5, p6 and p7 receive PDCCHDCI0 in the subframe 0 of radio frames N+2 frame, and this PDCCHDCI0 indicates and sends TB in the subframe 7 of the subframe 4 of radio frames N+2 frame, the subframe 5 of radio frames N+2 frame, the subframe 6 of radio frames N+2 frame and radio frames N+2 frame; P9, p11 are at subframe 1 receiving feedback information of radio frames N+2 frame, the TB that then this feedback information indicates the subframe 5 of radio frames N+1 frame and subframe 7 to send to base station needs to retransmit, p8, p9, p10 and p11 receive PDCCHDCI0 in the subframe 1 of radio frames N+2 frame, and this PDCCHDCI0 indicates the subframe 3 of the subframe 8 of radio frames N+2 frame, the subframe 9 of radio frames N+2 frame, the subframe 2 of radio frames N+3 frame and radio frames N+3 frame to send TB;
Then p5, p7 retransmit TB in the subframe 5 of radio frames N+2 frame and the subframe 7 of radio frames N+2 frame to base station;
P4, p6 send TB in the subframe 4 of radio frames N+2 frame, the subframe 6 of radio frames N+2 frame to base station;
P9, p11 retransmit TB in the subframe 9 of radio frames N+2 frame and the subframe 3 of radio frames N+3 frame to base station;
And p8, p10 send TB in the subframe 8 of radio frames N+2 frame, the subframe 2 of radio frames N+3 frame to base station;
Step S4, p1, p3 are at subframe 0 receiving feedback information of radio frames N+3 frame, the instruction of this feedback information needs to retransmit at the TB that the subframe 9 of radio frames N+1 frame and the subframe 3 of radio frames N+2 frame retransmit to base station at p1, p3, p0, p1, p2 and p3 receive PDCCHDCI0 in the subframe 0 of radio frames N+3 frame, and this PDCCHDCI0 indicates and sends TB in the subframe 7 of the subframe 4 of radio frames N+3 frame, the subframe 5 of radio frames N+3 frame, the subframe 6 of radio frames N+3 frame and radio frames N+3 frame; P5, p7 are at subframe 1 receiving feedback information of radio frames N+3 frame, the instruction of this feedback information p5, p7 need to retransmit at the TB that the subframe 5 of radio frames N+2 frame and the subframe 7 of radio frames N+2 frame retransmit to base station, p4, p5, p6 and p7 receive PDCCHDCI0 in the subframe 1 of radio frames N+3 frame, and this PDCCHDCI0 indicates the subframe 3 of the subframe 8 of radio frames N+3 frame, the subframe 9 of radio frames N+3 frame, the subframe 2 of radio frames N+4 frame and radio frames N+4 frame to send TB;
Then p1, p3 retransmit TB in the subframe 5 of radio frames N+3 frame and the subframe 7 of radio frames N+3 frame to base station;
P0, p2 send TB in the subframe 4 of radio frames N+3 frame, the subframe 6 of radio frames N+3 frame to base station;
P5, p7 retransmit TB in the subframe 9 of radio frames N+3 frame and the subframe 3 of radio frames N+4 frame to base station;
P4, p6 send TB in the subframe 8 of radio frames N+3 frame, the subframe 2 of radio frames N+4 frame to base station;
Step S5, p9, p11 are at subframe 0 receiving feedback information of radio frames N+4 frame, the ACK of this feedback information TB that to be p9, p11 retransmit to base station in the subframe 9 of radio frames N+2 frame and the subframe 3 of radio frames N+3 frame, p8, p9, p10 and p11 receive PDCCHDCI0 in the subframe 0 of radio frames N+4 frame, and this PDCCHDCI0 indicates and sends TB in the subframe 7 of the subframe 4 of radio frames N+4 frame, the subframe 5 of radio frames N+4 frame, the subframe 6 of radio frames N+4 frame and radio frames N+4 frame; P1, p3 are at subframe 1 receiving feedback information of radio frames N+4 frame, the ACK of this feedback information TB that to be p1, p3 retransmit to base station in the subframe 5 of radio frames N+3 frame and the subframe 7 of radio frames N+3 frame, p0, p1, p2 and p3 receive PDCCHDCI0 in the subframe 1 of radio frames N+4 frame, and this PDCCHDCI0 indicates the subframe 3 of the subframe 8 of radio frames N+4 frame, the subframe 9 of radio frames N+4 frame, the subframe 2 of radio frames N+5 frame and radio frames N+5 frame to send TB;
Then p8, p9, p10 and p11 send TB in the subframe 7 of the subframe 4 of radio frames N+4 frame, the subframe 5 of radio frames N+4 frame, the subframe 6 of radio frames N+4 frame and radio frames N+4 frame to base station;
P0, p1, p2 and p3 send TB in the subframe 3 of the subframe 8 of radio frames N+4 frame, the subframe 9 of radio frames N+4 frame, the subframe 2 of radio frames N+5 frame and radio frames N+5 frame.
To sum up, the communication means in a kind of tdd systems that the embodiment of the present invention provides, the number of ascending HARQ course can equal 12, uplink subframe scheduling can be opened, therefore can avoid the conflict of sub-frame of uplink when performing HARQ operation.
Table 6
With reference to table 7, show the sequential signal of the course of work of a kind of descending HARQ process of the embodiment of the present invention, wherein, the number of descending HARQ process can be 2.
Table 7
It should be noted that, for embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the embodiment of the present invention is not by the restriction of described sequence of movement, because according to the embodiment of the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and involved action might not be that the embodiment of the present invention is necessary.
Device embodiment one
In communication device embodiment one in a kind of tdd systems of the present invention, this device can be positioned at user equipment side, specifically can comprise: communication module;
Wherein, communication module, may be used for the communication being undertaken between base station by radio frames; Wherein, in above-mentioned radio frames, the proportioning of sub-frame of uplink and descending sub frame can be 8:1.
In one preferred embodiment of the invention, above-mentioned wireless frame structure can be DSUUUUUUUU; Wherein, D is subframe 0, represents descending sub frame; S is subframe 1, represents special subframe; U is subframe 2 to subframe 9, represents sub-frame of uplink.
Wherein, device can be positioned at user equipment side, also can be positioned at base station side.
Device embodiment two
With reference to Fig. 2, show the structural representation of the communication device embodiment two in a kind of tdd systems of the present invention, specifically can comprise: communication module 201 and cell search module 202;
Wherein, communication module 201, may be used for the communication being undertaken between base station by radio frames; Wherein, in above-mentioned radio frames, the proportioning of sub-frame of uplink and descending sub frame can be 8:1;
Cell search module 202, may be used for employing window search time and carries out Cell searching; Wherein, above-mentioned search time window length be more than or equal to the length of above-mentioned radio frames.
Device embodiment three
With reference to Fig. 3, show the structural representation of the communication device embodiment two in a kind of tdd systems of the present invention, specifically can comprise: communication module 301 and the first receiver module 302;
Wherein, communication module 301, may be used for the communication being undertaken between base station by radio frames; Wherein, in above-mentioned radio frames, the proportioning of sub-frame of uplink and descending sub frame can be 8:1;
First receiver module 302, may be used for receiving the uplink authorization dispatch command from base station; Wherein, carry 4 up indication bit in above-mentioned uplink authorization dispatch command, above-mentioned 4 up indication bit are used to indicate 4 the above-mentioned sub-frame of uplink needed to base-station transmission data.
Device embodiment four
With reference to Fig. 4, show the structural representation of the communication device embodiment four in a kind of tdd systems of the present invention, specifically can comprise: communication module 401 and uplink feedback module 402;
Wherein, communication module 401, may be used for the communication being undertaken between base station by radio frames; Wherein, in above-mentioned radio frames, the proportioning of sub-frame of uplink and descending sub frame can be 8:1;
Uplink feedback module 402, may be used for receiving from after the control information of base station, adopts two above-mentioned sub-frame of uplink to send the feedback information of above-mentioned control information.
Device embodiment five
With reference to Fig. 5, show the structural representation of the communication device embodiment five in a kind of tdd systems of the present invention, specifically can comprise: communication module 501 and the second receiver module 502;
Wherein, communication module 501, may be used for the communication being undertaken between base station by radio frames; Wherein, in above-mentioned radio frames, the proportioning of sub-frame of uplink and descending sub frame can be 8:1;
Second receiver module 502, may be used for receiving the first feedback command from base station; Wherein, carry 4 up index bits in above-mentioned first feedback command, above-mentioned 4 up index bits are used to indicate 4 described sub-frame of uplink corresponding to uplink feedback.
Device embodiment six
With reference to Fig. 6, show the structural representation of the communication device embodiment six in a kind of tdd systems of the present invention, specifically can comprise: communication module 601, the 3rd receiver module 602 and determination module 603;
Wherein, communication module 601, may be used for the communication being undertaken between base station by radio frames; Wherein, in above-mentioned radio frames, the proportioning of sub-frame of uplink and descending sub frame is 8:1;
3rd receiver module 602, may be used for receiving the second feedback command instruction from base station; Wherein, group character is carried in above-mentioned second feedback command instruction;
Determination module 603, may be used for according to 4 above-mentioned sub-frame of uplink corresponding to above-mentioned group character determination uplink feedback.
Device embodiment seven
In communication device embodiment seven in a kind of tdd systems of the present invention, this device can be positioned at user equipment side, and device use the number of ascending HARQ course to equal 12.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Those skilled in the art should understand, the embodiment of the embodiment of the present invention can be provided as method, device or computer program.Therefore, the embodiment of the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the embodiment of the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The embodiment of the present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, terminal equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing terminal equipment to produce a machine, making the instruction performed by the processor of computer or other programmable data processing terminal equipment produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing terminal equipment, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded on computer or other programmable data processing terminal equipment, make to perform sequence of operations step to produce computer implemented process on computer or other programmable terminal equipment, thus the instruction performed on computer or other programmable terminal equipment is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although described the preferred embodiment of the embodiment of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of embodiment of the present invention scope.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or terminal equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or terminal equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the terminal equipment comprising described key element and also there is other identical element.
Above to the communication means in a kind of tdd systems provided by the present invention and the communicator in a kind of tdd systems, be described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (16)
1. the communication means in tdd systems, is characterized in that, comprising:
Subscriber equipment carries out the communication between base station by radio frames; Wherein, in described radio frames, the proportioning of sub-frame of uplink and descending sub frame is 8:1.
2. method according to claim 1, is characterized in that, the structure of described radio frames is DSUUUUUUUU; Wherein, D is subframe 0, represents descending sub frame; S is subframe 1, represents special subframe; U is subframe 2 to subframe 9, represents sub-frame of uplink.
3. method according to claim 1 and 2, is characterized in that, described method also comprises:
Described subscriber equipment employing window search time carries out Cell searching; Wherein, described search time window length be more than or equal to the length of described radio frames.
4. method according to claim 1 and 2, is characterized in that, described method also comprises:
Described subscriber equipment receives the uplink authorization dispatch command from described base station; Wherein, carry 4 up indication bit in described uplink authorization dispatch command, described 4 up indication bit are used to indicate 4 the described sub-frame of uplink needed to base-station transmission data.
5. method according to claim 1 and 2, is characterized in that, described method also comprises:
Described subscriber equipment adopts two described sub-frame of uplink to send the feedback information of described control information after receiving the control information from described base station.
6. method according to claim 1 and 2, is characterized in that, described method also comprises:
Described subscriber equipment receives the first feedback command from described base station; Wherein, described first feedback command carries 4 up index bits, and whether 4 described sub-frame of uplink that described 4 up index bits are used to indicate Uplink Shared Channel corresponding transmit correctly.
7. method according to claim 1 and 2, is characterized in that, described method also comprises:
Described subscriber equipment receives the second feedback command from described base station; Wherein, group character is carried in described second feedback command;
Described subscriber equipment is according to 4 described sub-frame of uplink corresponding to described group character determination uplink feedback.
8. method according to claim 1 and 2, is characterized in that, described subscriber equipment use the number of ascending HARQ course to equal 12.
9. the communicator in tdd systems, is characterized in that, described device is positioned at user equipment side, comprising:
Communication module, for carrying out the communication between base station by radio frames; Wherein, in described radio frames, the proportioning of sub-frame of uplink and descending sub frame is 8:1.
10. device according to claim 9, is characterized in that, the structure of described radio frames is DSUUUUUUUU; Wherein, D is subframe 0, represents descending sub frame; S is subframe 1, represents special subframe; U is subframe 2 to subframe 9, represents sub-frame of uplink.
11. devices according to claim 9 or 10, it is characterized in that, described device also comprises:
Cell search module, carries out Cell searching for adopting search time window; Wherein, described search time window length be more than or equal to the length of described radio frames.
12. devices according to claim 9 or 10, it is characterized in that, described device also comprises:
First receiver module, for receiving the uplink authorization dispatch command from described base station; Wherein, carry 4 the first up indication bit in described uplink authorization dispatch command, described 4 the first up indication bit are used to indicate 4 the described sub-frame of uplink needed to base-station transmission data.
13. devices according to claim 9 or 10, it is characterized in that, described device also comprises:
Uplink feedback module, after receiving the control information from described base station, adopts two described sub-frame of uplink to send the feedback information of described control information.
14. want the device described in 9 or 10 according to right, it is characterized in that, described device also comprises:
Second receiver module, for receiving the first feedback command from described base station, wherein, described first feedback command carries 4 up index bits, and whether 4 described sub-frame of uplink that described 4 up index bits are used to indicate Uplink Shared Channel corresponding transmit correctly.
15. devices according to claim 9 or 10, it is characterized in that, described device also comprises:
3rd receiver module, for receiving the second feedback command instruction from described base station; Wherein, group character is carried in described second feedback command instruction;
Determination module, for according to 4 described sub-frame of uplink corresponding to described group character determination uplink feedback.
16. devices according to claim 9 or 10, it is characterized in that, described device is positioned at user equipment side, described device use the number of ascending HARQ course to equal 12.
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