CN103813456A - Method, related devices and system of resource allocation - Google Patents
Method, related devices and system of resource allocation Download PDFInfo
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- CN103813456A CN103813456A CN201210450796.1A CN201210450796A CN103813456A CN 103813456 A CN103813456 A CN 103813456A CN 201210450796 A CN201210450796 A CN 201210450796A CN 103813456 A CN103813456 A CN 103813456A
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Abstract
An embodiment of the invention provides a method, related devices and a system of resource allocation. Resources which are used for transmitting downlink data in cross time slots are allocated to a first terminal which belongs to a macro cell through the macro cell; the resource information of the allocated resources is sent to a femtocell which is located within the coverage range of the macro cell; resources different from the resources which are represented by the resource information are preferentially allocated to a second terminal which belongs to the femtocell through the femtocell according to the resource information and used for transmitting uplink data in the cross time slots. The method, the related devices and the system of the resource allocation are used for solving the problem of strong interference of the uplink data transmission of HUE (Home User Equipment) on the downlink data transmission of MUE (Macro User Equipment) in the cross time slots when same frequency networking is performed on the macro cell and the femtocell. The invention relates to the mobile communication technical field.
Description
Technical field
The present invention relates to mobile communication technology field, relate in particular to a kind of resource allocation methods, relevant device and system.
Background technology
Mobile communication business develops rapidly in the world at present, mobile subscriber's quantity constantly increases, the demand of high-speed data service improves day by day, and this power system capacity, coverage, service quality to mobile communications network is had higher requirement.Use LTE technology can meet the requirement that outdoor high power capacity covers, but the loss of wireless signal while penetrating wall make indoor covering poor, particularly the cell edge indoor scene away from from macrocell base stations.All the statistics of Como NTT DoCoMo shows 3G to have the business of 70% left and right to occur in indoor, following estimate the business that has 90% left and right to occur in indoor, how realizing from macrocell base stations that the indoor high power capacity of cell edge away from covers is a problem of needing solution badly.
The indoor soverlay technique of microcell base station (Femtocell) effectively supplements as Long Term Evolution (LTE, Long TermEvolution) macrocellular, can effectively solve the problem that the indoor high power capacity of cell edge region covers.But when the microcell base station based on LTE technology and macrocell base stations identical networking, having serious interference problem: Fig. 1 is the interference scene of microcell base station and macrocell base stations, comprise: macrocell base stations 101, microcell base station 102 in macrocell base stations coverage, belong to the macro cells terminal 103(MUE of macrocell base stations 101, Macro User Equipment), belong to the Micro-cell terminal 104(HUE of microcell base station, Home User Equipment) and the service link that represents of solid arrow, the interfering link that dotted arrow represents.Near microcell base station 102 communities MUE103 due to apart from macrocell base stations 101 compared with the available signal power far receiving a little less than, again due to distant between macrocell base stations 101 and microcell base station 102 and there is loss through walls, so the interference being produced by microcell base station also a little less than, and strong jamming is mainly HUE104, MUE103 is disturbed.
Existing research is mostly based on LTE Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplex) macrocell base stations and the interference problem occurring when microcell base station identical networking, or the time division duplex LTE system (TD-LTE that macrocell base stations is identical with microcell base station time slot proportion, Time DivisionDuplex-LTE) interference problem when identical networking, rarely have and relate to (the interference scene in Fig. 1) for the cross time-slot strong jamming problem occurring in the time that TD-LTE macrocell base stations is different from microcell base station time slot proportion.
The adoptable time slot proportion mode of TD-LTE system is as shown in table 1.Macrocell base stations and microcell base station can adopt any time slot proportion mode shown in table 1 as required, but when the time slot proportion mode different when the employing of outdoor macrocell base stations and the indoor microcell base station in its coverage, especially in the time that microcell base station adopts the time slot proportion mode of more sub-frame of uplink, there will be cross time-slot, at a certain time slot, the downlink transfer time slot of macrocell base stations is just the uplink time slot of microcell base station, so just there will be the strong jamming problem (as the interference scene in Fig. 1) of cross time-slot.
Table 1TD-LTE time slot proportion mode
Summary of the invention
The embodiment of the present invention provides a kind of resource allocation methods, relevant device and system, when solving macrocell base stations and microcell base station identical networking, and the strong jamming problem of the downlink data transmission of the transmitting uplink data of HUE to MUE in cross time-slot.
Based on the problems referred to above, one of a kind of resource allocation methods that the embodiment of the present invention provides, comprising:
Macrocell base stations is that the first terminal of ownership self divides the resource that is used in transmitting downlink data in cross time-slot, and described cross time-slot is the cross time-slot between described first terminal and the second terminal that belongs to the microcell base station in described macrocell base stations coverage;
The resource information of the described resource of distributing is sent to the microcell base station in described macrocell base stations coverage, make described microcell base station be preferably the different resource of resource that described the second terminal distribution characterizes from described resource information, for described the second terminal transmit ascending data in described cross time-slot.
Two of a kind of resource allocation methods that the embodiment of the present invention provides, comprising:
Microcell base station receives the resource information that macrocell base stations is the resource for transmitting downlink data in cross time-slot of the first terminal distribution of the described macrocell base stations of ownership, described microcell base station is in the coverage of described macrocell base stations, and described cross time-slot is the cross time-slot between described first terminal and the second terminal of the described microcell base station of ownership;
The different resource of resource characterizing from described resource information for described the second terminal priority allocation, for transmit ascending data in described cross time-slot.
A kind of macrocell base stations that the embodiment of the present invention provides, comprising:
Distribution module, be used to the first terminal of ownership self to divide the resource that is used in transmitting downlink data in cross time-slot, described cross time-slot is the cross time-slot between described first terminal and the second terminal that belongs to the microcell base station in described macrocell base stations coverage;
Sending module, for the resource information of the described resource of distributing is sent to the microcell base station in described macrocell base stations coverage, make described microcell base station be preferably the different resource of resource that described the second terminal distribution characterizes from described resource information, for described the second terminal transmit ascending data in described cross time-slot.
A kind of microcell base station that the embodiment of the present invention provides, comprising:
Receiver module, for receiving the resource information that macrocell base stations is the resource for transmitting downlink data in cross time-slot of the first terminal distribution of the described macrocell base stations of ownership, described microcell base station is in the coverage of described macrocell base stations, and described cross time-slot is the cross time-slot between described first terminal and the second terminal of the described microcell base station of ownership;
The first distribution module, the different resource of resource that is used to described the second terminal priority allocation to characterize from described resource information, for transmit ascending data in described cross time-slot.
A kind of resource allocation system that the embodiment of the present invention provides, comprising:
Macrocell base stations, be used to the first terminal of ownership self to divide the resource that is used in transmitting downlink data in cross time-slot, described cross time-slot is the cross time-slot between described first terminal and the second terminal that belongs to the microcell base station in described macrocell base stations coverage; The resource information of the described resource of distributing is sent to the microcell base station in described macrocell base stations coverage;
Microcell base station, for receiving the resource information that macrocell base stations is the resource for transmitting downlink data in cross time-slot of the first terminal distribution of the described macrocell base stations of ownership, described microcell base station is in the coverage of described macrocell base stations; The different resource of resource characterizing from described resource information for described the second terminal priority allocation, for transmit ascending data in described cross time-slot.
The beneficial effect of the embodiment of the present invention comprises:
In the scheme that the embodiment of the present invention provides, macrocell base stations is that the first terminal of ownership self divides the resource that is used in transmitting downlink data in cross time-slot, and the resource information of the resource of distribution is sent to the microcell base station in its coverage, microcell base station is preferably the second terminal distribution resource different from the resource of above-mentioned resource information sign that belongs to self according to this resource information, for transmit ascending data in cross time-slot, thereby make to belong to the preferential use of the second terminal resource different from the shared resource of first terminal of ownership macrocell base stations of microcell base station, transmit ascending data in cross time-slot, and then reduce the interference to first terminal transmitting downlink data in cross time-slot.
Accompanying drawing explanation
The microcell base station that Fig. 1 provides for prior art and the interference scene schematic diagram of macrocell base stations;
One of a kind of resource allocation methods that Fig. 2 provides for embodiment of the present invention flow chart;
Two flow charts of a kind of resource allocation methods that Fig. 3 provides for the embodiment of the present invention;
The flow chart of a kind of resource allocation methods of specific embodiment that Fig. 4 provides for the embodiment of the present invention;
The microcell base station that Fig. 5 provides for the embodiment of the present invention is to belonging to PUCCH channel DMRS signal and the PUSCH channel DMRS input flow chart of terminal of macrocell base stations;
The Theory of correlation detection schematic diagram that Fig. 6 provides for the embodiment of the present invention;
The coherent detection detection window schematic diagram that Fig. 7 provides for the embodiment of the present invention;
Uplink frame and downlink frame structure chart in the LTE that Fig. 8 a-Fig. 8 b provides for the embodiment of the present invention;
A kind of macrocell base stations structure chart that Fig. 9 provides for the embodiment of the present invention;
The structure chart of a kind of microcell base station that Figure 10 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with Figure of description, the embodiment of a kind of resource allocation methods, relevant device and the system that the embodiment of the present invention is provided describes.
For the ease of distinguishing the terminal that belongs to macrocell base stations, with the terminal that belongs to the microcell base station in this macrocell base stations coverage, in the embodiment of the present invention, being first terminal by the terminal definitions that belongs to macrocell base stations, is the second terminal by the terminal definitions that belongs to the microcell base station in this macrocell base stations coverage.
One of a kind of resource allocation methods that the embodiment of the present invention provides, is the resource allocation flow of macrocell base stations side, as shown in Figure 2, specifically comprises the following steps:
S201, macrocell base stations are that the first terminal of ownership self divides the resource that is used in transmitting downlink data in cross time-slot, and above-mentioned cross time-slot is the cross time-slot between first terminal and the second terminal that belongs to the microcell base station in above-mentioned macrocell base stations coverage;
S202, the resource information of the resource of distributing in step S201 is sent to the microcell base station in above-mentioned macrocell base stations coverage, make this microcell base station be preferably the different resource of resource that the second terminal distribution characterizes from above-mentioned resource information, for the second terminal transmit ascending data in above-mentioned cross time-slot.
Two of a kind of resource allocation methods that the embodiment of the present invention provides, is the resource allocation flow of microcell base station side, as shown in Figure 3, specifically comprises the following steps:
S301, microcell base station receive the resource information that macrocell base stations is the resource for transmitting downlink data in cross time-slot of the first terminal distribution of ownership macrocell base stations, this microcell base station is in the coverage of above-mentioned macrocell base stations, and cross time-slot is the cross time-slot between first terminal and the second terminal of the above-mentioned microcell base station of ownership;
S302, the different resource of resource that to be the second terminal priority allocation characterize from above-mentioned resource information, for transmit ascending data in cross time-slot.
The method of distributing with a specific embodiment explanation a kind of resource provided by the invention below, as shown in Figure 4:
Microcell base station in S401, macrocell base stations and its coverage carries out information interaction; Macrocell base stations is obtained but is not limited to the time slot proportion mode of microcell base station; Microcell base station obtains but is not limited to time slot proportion mode, the Physical Uplink Shared Channel (PUSCH of macrocell base stations, Physical Uplink SharedChannel) solution call reference signal (DMRS, Demodulation Reference Signal) selected permanent envelope zero autocorrelation sequence (CAZAC, Const Amplitude Zero Auto-Corelation) sequence and this sequence in the selected CAZAC sequence of the DMRS of different time-gap saltus step pattern, PUCCH and sequence at different time-gap saltus step pattern;
S402, microcell base station detect near the end message of the terminal that belongs to above-mentioned macrocell base stations self, and this end message are sent to macrocell base stations;
S403, macrocell base stations receive the end message of the detected terminal that belongs to macrocell base stations of microcell base station transmission, and the terminal that this end message is characterized is as first terminal;
S404, macrocell base stations are that self first terminal of ownership divides and is used in the resource of transmitting downlink service data in cross time-slot; This resource is different for the resource of transmitting uplink control information in described cross time-slot from the second terminal of the described microcell base station of ownership; And the resource information of the resource of distributing is sent to microcell base station;
S405, microcell base station receive the resource information of the resource of the first terminal distribution for this macrocell base stations of ownership of macrocell base stations transmission, be the different resource of resource that the second terminal priority allocation characterizes from this resource information, for transmit uplink business data in described cross time-slot.
Further, step S401 is optional step, for example, also can in advance the information of needs be placed in to macrocell base stations or microcell base station.
Further, in step S402, microcell base station can obtain by several different methods near the end message of the first terminal that belongs to macrocell base stations it.For example, microcell base station can be crossed the demodulated reference signal DMRS of the ascending control channel PUCCH to macrocell base stations and the DMRS of Uplink Shared Channel PUSCH detects according to the information exchange of the macrocell base stations of obtaining, and detects near the terminal that belongs to macrocell base stations this microcell base station.Because belong near microcell base station in the testing process of terminal of macrocell base stations, in order to reduce false dismissal probability, should detect the first terminal with following type of service: the first terminal only with downlink traffic transmission, only there is the first terminal of uplink traffic transmission, there is the first terminal of uplink and downlink business transmission simultaneously.The in the situation that of the unallocated PUSCH of terminal (without uplink traffic transmission), the control signal of L1/L2 layer, as channel quality indication (CQI, Channel Quality Indicator), confirmation (ACK, Acknowledgement), dispatch request (SR, Scheduling Request) etc. need to be carried by PUCCH.Therefore the embodiment of the present invention proposes the method that the DMRS of DMRS to macrocell base stations PUCCH and PUSCH detects respectively, can detect near microcell base station and there is downlink business, there is uplink traffic transmission, there is the first terminal of up-downgoing business transmission, reduce false dismissal probability.
Further, microcell base station is as follows to belonging to PUCCH channel DMRS signal and the PUSCH channel DMRS signal detection process step of terminal of macrocell base stations, as shown in Figure 5:
S501, microcell base station obtain the uplink synchronous with macrocell base stations, determine detection time;
S502, the PUSCH channel DMRS that belongs to macrocell base stations is detected, to detect near the terminal that belongs to macrocell base stations microcell base station with uplink traffic transmission;
S503, the PUCCH channel DMRS that belongs to macrocell base stations is detected, to detect near the terminal that belongs to macrocell base stations microcell base station with downlink traffic transmission;
If S504 detects microcell base station, near existence has the terminal that belongs to macrocell base stations that uplink traffic transmission, downlink traffic transmission or up-downgoing business are transmitted, feed back the cyclic shift of the CAZAC root sequence that tested DMRS signal uses and in information such as subframe frequency domain positions to macrocell base stations, so that macrocellular can be confirmed to belong to the ID of the terminal of macrocell base stations near this microcell base station according to this feedback information, and sets it as first terminal.
Further, the execution of step S502 and S503 does not have certain sequencing, and first carrying out S503, to carry out S502 also passable again.
Further, in above-mentioned steps S502, the generating mode of the DMRS of PUSCH channel is:
Wherein, r
pUSCHrepresent DMRS signal, m=0 or 1 represents two time slots of a subframe,
represent the number of sub carrier wave that certain user uplink is shared, wherein
represent CAZAC sequence r
u,v(n) cyclic shift.
The CAZAC sequence r that the uplink synchronous that microcell base station utilization has been obtained and macrocell base stations PUSCH channel adopt
u,v(n) and in the mapping mode of different time-gap, the DMRS signal of the PUSCH channel to the terminal receiving can adopt the method for coherent detection.If detected value is greater than the thresholding setting, judge near the first terminal that carries out uplink traffic transmission that exists of microcell base station, obtain the cyclic shift α of tested DMRS signal and the positional information in sub-frame of uplink frequency domain thereof; If there is not this Class Activation first terminal near lower than thresholding, judging microcell base station in detected value.
Further, the principle of coherent detection as shown in Figure 6, in Fig. 6, the signal Y receiving exports Y1 after channel equalization, Y1 is inputted to correlator 1 to correlator k, input respectively CAZAC sequence X 1 to CAZAC sequence X k simultaneously to correlator 1 to correlator k, Y1 in each correlator and different CAZAC sequences are carried out related operation, by each correlator respectively the detection window of corresponding associated window obtain detected value, as shown in Figure 7, correlator 1 to correlator k respectively corresponding detection window 1 to detection window k, if there is a detection window, as detection window k, exist peak value to be greater than pre-set threshold value, illustrate that in correlator k, to make the Y1 of related operation relevant with CAZAC sequence k, in detection window 1, do not exist and be significantly greater than the peak value of peak value around, illustrate that in correlator 1, to make the Y1 of related operation uncorrelated with CAZAC sequence 1.
Further, the DMRS signal of PUSCH channel is adopted to the method for above-mentioned coherent detection, the signal Y receiving in the present embodiment can refer to that microcell base station receives its near macrocell base stations coverage in the DMRS signal that sends of terminal; CAZAC sequence X 1 to CAZAC sequence X k can refer to microcell base station according to the selected CAZAC sequence of the DMRS of the PUSCH of the macrocell base stations obtained and this sequence at different time-gap saltus step pattern, the multiple CAZAC sequences that obtain through cyclic shift; Correlator 1 is to correlator k, exist in the detection window k that correlator k is corresponding, existing peak value to be greater than pre-set threshold value, signal Y(DMRS signal that explanation this time detects) corresponding terminal is near the terminal in macrocell base stations coverage microcell base station.
Further, in above-mentioned steps S503, the generating mode of the DMRS of PUCCH channel is:
Wherein, r
pUSCHrepresent DMRS signal, m'=0 or 1, distinguishes two time slots in each radio frames.
for PUCCH channel format format1 and format1a/1b,
value be 4, for PUCCH channel format format1A/1B, at first time slot
value be 4, at second time slot
value be 3; The value of n is
represent the orthogonal code that the DMRS of different PUCCH channels selects,
represent CAZAC sequence r
u,v(n) cyclic shift,
represent the number of PUCCH channel reference signal, the value of z (m) is definite according to the form of PUCCH channel,
value be 12.The meaning of other parameters of formula is with parameter corresponding in the generating mode of the DMRS of PUSCH channel.
According to the principle of above-mentioned coherent detection, first microcell base station utilizes
dMRS signal to PUCCH channel carries out related operation, obtains at least one operation result.The CAZAC sequence that the uplink synchronous obtained of recycling and macrocell base stations PUCCH channel adopt and in the mapping mode of different time-gap, the multiple CAZAC sequences that obtain through circulative shift operation, at least one operation result that previous step related operation is obtained carries out respectively coherent detection.If detected value is greater than detection threshold, judge near the first terminal that carries out downlink traffic transmission that exists of microcell base station, obtain the cyclic shift α of tested DMRS signal CAZAC sequence, the orthogonal code of selecting
and position in sub-frame of uplink frequency domain; If there is not this Class Activation first terminal near lower than thresholding, judging microcell base station in detected value.
Further, the detection method of above-mentioned DMRS is the detection for the DMRS signal of time domain, can also detect for the DMRS signal of frequency domain, and testing result is identical, repeats no more here.
Further, in above-mentioned steps S404, macrocell base stations is that self first terminal of ownership divides to be used in and in cross time-slot, transmits downlink service data Resources allocation, this resource is different for the resource of transmitting uplink control information in cross time-slot from the second terminal of ownership microcell base station, due to the Resource Block (RB at the main band occupancy of ascending control channel two ends, Resource Block) (as shown in Figure 8 a), should avoid distributing the RB at the frequency band two ends that ascending control channel will take as far as possible, and the middle RB of allocated frequency band, avoid by this way the interference of ascending control channel to DSCH Downlink Shared Channel.
Further, in above-mentioned steps S405, microcell base station receives after the resource information of the resource for first terminal distribution of macrocell base stations transmission, according to this resource information, be preferably the different resource of resource that the second terminal distribution characterizes from this resource information, be that the second terminal is transmitted uplink business data at cross time-slot, like this, Uplink Shared Channel can be by evading with the business scheduling of the second terminal that belongs to microcell base station near the first terminal that belongs to macrocell base stations microcell base station to the interference of DSCH Downlink Shared Channel on different Resource Block.
Further, the above-mentioned resource allocation methods that embodiment provides for a better understanding of the present invention, as shown in Figure 8 a, downlink frame structure is as shown in Figure 8 b to briefly introduce in LTE uplink frame structure below.Fig. 8 a is the uplink frame structure chart of time slot n and time slot n+1, the Resource Block (RB) at bandwidth two ends is for transmitting uplink control information, be ascending control channel (PUCCH), the Resource Block in the middle of bandwidth is used for transmitting uplink business data, i.e. Uplink Shared Channel (PUSCH); The 4th OFDM (OFDM, the Orthogonal Frequency Division Multiplexing) symbol of the each time slot of PUSCH is DMRS; The Resource Block of PUCCH in figure, employing be 1/1a/1b form; Fig. 8 b is the downlink frame structure chart of time slot n and time slot n+1, and the RE of front 1-3 OFDM symbol of each first time slot of descending sub frame is as down control channel, and other RE of the first time slot and the RB of other time slots are all as DSCH Downlink Shared Channel.
Further, from Fig. 8 a and Fig. 8 b, at cross time-slot, the transmitting uplink data that belongs to the second terminal of microcell base station mainly contains near the interference of reception of the downlink data that belongs to the first terminal to macrocell base stations it: interference, ascending control channel interference, Uplink Shared Channel interference, the ascending control channel interference to down control channel to down control channel to DSCH Downlink Shared Channel of Uplink Shared Channel to DSCH Downlink Shared Channel.Due to the special nature of LTE down control channel, in downlink frame structure, fixedly take front 1-3 OFDM symbol RE of each first time slot of descending sub frame.And LTE ascending control channel accounts for the RB at system bandwidth two ends, therefore microcell base station ascending control channel only disturbs the shared sub-fraction resource particle (RE of macrocell base stations down control channel, Resource Element), interweave because down control channel has adopted again, the interference randomization technology such as scrambling, so this interference can be for the control information of certain first terminal.The interference of the descending reception of the up transmission of the second terminal that therefore, belongs to microcell base station at cross time-slot near the first terminal that belongs to macrocell base stations microcell base station mainly contains: interference, the ascending control channel interference to DSCH Downlink Shared Channel of Uplink Shared Channel to DSCH Downlink Shared Channel.And above-mentioned steps S404 has solved the interference of ascending control channel to DSCH Downlink Shared Channel in the embodiment of the present invention, above-mentioned steps S405 has solved the interference of Uplink Shared Channel to DSCH Downlink Shared Channel.
Further, in above-mentioned steps S404, macrocell base stations should be used in the resource that the continuous Resource Block of transmitting downlink data characterizes in cross time-slot for the first terminal of ownership self divides.According to 3GPP agreement, can dispatch at discrete Resource Block and obtain frequency diversity gain user's downlink business, transmitting uplink data is in order to keep single-carrier property business must be dispatched on continuous Resource Block.Macrocell base stations should adopt dispatches near first terminal downlink business microcell base station on continuous Resource Block as far as possible, thereby reduces the restriction of the uplink service communication resource distribution degree of freedom of the second terminal to belonging to microcell base station.
Further, after microcell base station is preferentially all distributed to described the second terminal by the resources different resource characterizing from the resource information receiving in above-mentioned steps S405, while also there is unallocated the second terminal to the resource for transmit ascending data in cross time-slot, microcell base station can stop the second terminal distribution resource that arrives resource for unallocated, can be also the identical resource of resource that unallocated appointment the second terminal distribution in the second terminal of resource characterizes with above-mentioned resource information.Like this, if microcell base station stops as unallocated the second terminal distribution resource to resource, the interference of the downlink traffic transmission of the transmitting uplink data of having evaded the second terminal to first terminal; The identical resource of resource that if microcell base station is unallocated appointment the second terminal distribution in the second terminal of resource to be characterized with above-mentioned resource information, even if second terminal of specifying has been used the identical resource of resource taking with first terminal, owing to preferentially having used the different resource of resource taking from first terminal, the interference of the downlink traffic transmission of the transmitting uplink data that also can reduce by the second terminal to first terminal.The second terminal of above-mentioned appointment, can be for having second terminal of VIP authority etc.
Further, above-mentioned steps S405, can be specially: the different resource of resource that microcell base station preferentially characterizes the resource information receiving, priority allocation is given second terminal with real time business, for transmit ascending data in described cross time-slot.At cross time-slot, the business that microcell base station priority scheduling requirement of real-time is higher is transmitted as uplink business data.The business that real-time is higher can comprise makes a phone call, sees online video, the business such as listen to the music online, and the business that real-time is not high can comprise the business such as downloading data.Can reduce like this number that near first terminal downlink business information microcell base station and Downlink Control Information is received to the second terminal that causes interference, thus the interference of the downlink traffic transmission of the transmitting uplink data that reduces by the second terminal to first terminal.
Further, at cross time-slot, the second terminal that belongs to microcell base station can be by being used lower transmitting power, the interference of the descending reception of the up transmission that reduces by the second terminal to first terminal.Specifically can realize by LTE uplink power control:
According to 3GPP standard, terminal PUSCH channel emission power P(unit is dBm) be:
P=min{P
max,10logM+P
0_PUSCH(j)+α(j)PL+Δ
TF+f(i)}
Wherein, P
maxrepresent the transmitting power of terminal maximum, PL represents the downlink path loss value that terminal is measured, and M represents to distribute to the shared RB number of PUSCH channel of terminal, P
0_PUSCHrepresent the power reference value that high-level signaling arranges, Δ
tFrepresent by modulation coding mode and the determined power offset of data type (controlling or data message), f represents the adjusted value being formed by terminal closed-loop power control, α={ 0,0.4,0.5,0.6,0.7,0.8,0.9,1}: represent the specific path loss in community (large scale decline) penalty coefficient, the numerical value of indicating this community to use by high-level signaling 3bit.In embodiments of the present invention, near detecting, microcell base station there is first terminal, to be configured to less path loss penalty coefficient α at cross time-slot microcell base station, thereby reduce the interference power near first terminal Downlink Control Information this microcell base station and downlink service data reception.
Based on same inventive concept, the embodiment of the present invention also provides a kind of relevant device and system of resource allocation methods, because the principle that these equipment are dealt with problems with system is similar to aforementioned a kind of resource allocation methods, therefore the enforcement of this equipment and system can be referring to the enforcement of preceding method, repeats part and repeat no more.
The embodiment of the present invention also provides a kind of macrocell base stations, as shown in Figure 9, comprising:
Sending module 902, for the resource information of the resource of distribution is sent to the microcell base station in macrocell base stations coverage, make this microcell base station be preferably the different resource of resource that the second terminal distribution characterizes from above-mentioned resource information, for the second terminal transmit ascending data in cross time-slot.
Further, above-mentioned distribution module 901, specifically for being used in for the first terminal of ownership macrocell base stations divides the resource of transmitting downlink service data in cross time-slot; This resource is different for the resource of transmitting uplink control information in cross time-slot from the second terminal of ownership microcell base station.
Further, a kind of macrocell base stations that the embodiment of the present invention provides, can also comprise:
Further, above-mentioned distribution module 901, specifically for dividing and be used in the resource that the continuous Resource Block of transmitting downlink data characterizes in cross time-slot for the first terminal of ownership macrocell base stations.
The embodiment of the present invention also provides a kind of microcell base station, as shown in figure 10, comprising:
Receiver module 1001, for receiving the resource information that macrocell base stations is the resource for transmitting downlink data in cross time-slot of the first terminal distribution of this macrocell base stations of ownership, above-mentioned microcell base station is in the coverage of this macrocell base stations, and above-mentioned cross time-slot is the cross time-slot between first terminal and the second terminal of ownership microcell base station;
The first distribution module 1002, the different resource of resource that is used to the second terminal priority allocation to characterize from above-mentioned resource information, for transmit ascending data in cross time-slot.
Further, above-mentioned the first distribution module 1002, specifically for being the different resource of resource that the second terminal priority allocation characterizes from above-mentioned resource information, for transmit uplink business data in cross time-slot.
Further, a kind of microcell base station that the embodiment of the present invention provides can also comprise:
The second distribution module 1003, for after microcell base station is preferentially all distributed to the second terminal by the resources different resource characterizing from above-mentioned resource information, while also there is unallocated the second terminal to the resource for transmit ascending data in cross time-slot, microcell base station stops as unallocated the second terminal distribution to resource is for the resource of transmit ascending data in cross time-slot, or after microcell base station is preferentially all distributed to the second terminal by the resources different resource characterizing from above-mentioned resource information, while also there is unallocated the second terminal to the resource for transmit ascending data in cross time-slot, microcell base station is the identical resource of resource that unallocated appointment the second terminal distribution in the second terminal of resource characterizes with above-mentioned resource information, for transmit ascending data in cross time-slot.
Further, above-mentioned the first distribution module 1002, specifically for preferentially, by the resources different resource characterizing from above-mentioned resource information, priority allocation is given second terminal with real time business, for transmit ascending data in cross time-slot.
Further, a kind of microcell base station that the embodiment of the present invention provides can also comprise:
Detection module 1004, for detection of the terminal that belongs to macrocell base stations;
Sending module 1005, for sending to macrocell base stations by the end message of the detected terminal that belongs to above-mentioned macrocell base stations.
Further, above-mentioned detection module 1004, specifically for according to macrocell base stations being the demodulated reference signal DMRS of ascending control channel PUCCH and the DMRS of Uplink Shared Channel PUSCH that belongs to the terminal distribution of described macrocell base stations, the DMRS of the PUCCH that the terminal receiving is sent detects, obtain the first detected value, and the DMRS of the PUSCH that the terminal that receives is sent detects, obtain the second detected value; Determine that the terminal that the first detected value is greater than default the first threshold values is the terminal that belongs to described macrocell base stations, and determine that the terminal that the second detected value is greater than the second pre-set threshold value is the terminal that belongs to described macrocell base stations.
The embodiment of the present invention also provides a kind of resource allocation system, comprising:
Macrocell base stations, be used to the first terminal of ownership self to divide the resource that is used in transmitting downlink data in cross time-slot, described cross time-slot is the cross time-slot between described first terminal and the second terminal that belongs to the microcell base station in described macrocell base stations coverage; The resource information of the described resource of distributing is sent to the microcell base station in described macrocell base stations coverage;
Microcell base station, for receiving the resource information that macrocell base stations is the resource for transmitting downlink data in cross time-slot of the first terminal distribution of the described macrocell base stations of ownership, described microcell base station is in the coverage of described macrocell base stations; The different resource of resource characterizing from described resource information for described the second terminal priority allocation, for transmit ascending data in described cross time-slot.
In the scheme that the embodiment of the present invention provides, macrocell base stations is that the first terminal of ownership self divides the resource that is used in transmitting downlink data in cross time-slot, and the resource information of the resource of distribution is sent to the microcell base station in its coverage, microcell base station is preferably the second terminal distribution resource different from the resource of above-mentioned resource information sign that belongs to self according to this resource information, for transmit ascending data in cross time-slot, thereby make to belong to the preferential use of the second terminal resource different from the shared resource of first terminal of ownership macrocell base stations of microcell base station, transmit ascending data in cross time-slot, and then reduce the interference to first terminal transmitting downlink data in cross time-slot.
Through the above description of the embodiments, those skilled in the art can be well understood to the embodiment of the present invention and can realize by hardware, and the mode that also can add necessary general hardware platform by software realizes.Based on such understanding, the technical scheme of the embodiment of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise that some instructions are in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) carry out the method described in each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device in embodiment can be distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into multiple submodules.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (21)
1. a resource allocation methods, is characterized in that, comprising:
Macrocell base stations is that the first terminal of ownership self divides the resource that is used in transmitting downlink data in cross time-slot, and described cross time-slot is the cross time-slot between described first terminal and the second terminal that belongs to the microcell base station in described macrocell base stations coverage;
The resource information of the described resource of distributing is sent to the microcell base station in described macrocell base stations coverage, make described microcell base station be preferably the different resource of resource that described the second terminal distribution characterizes from described resource information, for described the second terminal transmit ascending data in described cross time-slot.
2. the method for claim 1, is characterized in that, macrocell base stations is that the first terminal of ownership self divides the resource that is used in transmitting downlink data in cross time-slot, specifically comprises:
Macrocell base stations is that self first terminal of ownership divides and is used in the resource of transmitting downlink service data in cross time-slot; Described resource is different for the resource of transmitting uplink control information in described cross time-slot from the second terminal of the described microcell base station of ownership.
3. method as claimed in claim 1 or 2, is characterized in that, is before the first terminal Resources allocation of ownership self in macrocell base stations, also comprises:
The end message that receives the detected terminal that belongs to described macrocell base stations of described microcell base station transmission, the terminal that described end message is characterized is as first terminal.
4. the method for claim 1, is characterized in that, macrocell base stations is that the first terminal of ownership self divides the resource that is used in transmitting downlink data in cross time-slot, specifically comprises:
Macrocell base stations is that the first terminal of ownership self divides the resource that is used in the continuous Resource Block sign of transmitting downlink data in cross time-slot.
5. a resource allocation methods, is characterized in that, comprising:
Microcell base station receives the resource information that macrocell base stations is the resource for transmitting downlink data in cross time-slot of the first terminal distribution of the described macrocell base stations of ownership, described microcell base station is in the coverage of described macrocell base stations, and described cross time-slot is the cross time-slot between described first terminal and the second terminal of the described microcell base station of ownership;
The different resource of resource characterizing from described resource information for described the second terminal priority allocation, for transmit ascending data in described cross time-slot.
6. method as claimed in claim 5, is characterized in that, the different resource of resource characterizing from described resource information for described the second terminal priority allocation, for transmit ascending data in described cross time-slot, specifically comprises:
The different resource of resource characterizing from described resource information for described the second terminal priority allocation, for transmitting uplink business data in described cross time-slot.
7. the method as described in claim 5 or 6, is characterized in that, also comprises:
After described microcell base station is preferentially all distributed to described the second terminal by the resources different resource characterizing from described resource information, also exist unallocated when for the second terminal of the resource of transmit ascending data in described cross time-slot, described microcell base station stops as unallocated the second terminal distribution to resource is for the resource of transmit ascending data in described cross time-slot, or
After described microcell base station is preferentially all distributed to described the second terminal by the resources different resource characterizing from described resource information, also exist unallocated when for the second terminal of the resource of transmit ascending data in described cross time-slot, described microcell base station is the identical resource of resource that unallocated appointment the second terminal distribution in the second terminal of resource characterizes with described resource information, for transmit ascending data in described cross time-slot.
8. method as claimed in claim 5, is characterized in that, the different resource of resource characterizing from described resource information for described the second terminal priority allocation, for transmit ascending data in described cross time-slot, specifically comprises:
Microcell base station is preferentially by the resources different resource characterizing from described resource information, and priority allocation is given second terminal with real time business, for transmit ascending data in described cross time-slot.
9. method as claimed in claim 5, is characterized in that, microcell base station also comprises before receiving the resource information that macrocell base stations is first terminal distribution:
Microcell base station detects the terminal that belongs to described macrocell base stations;
The end message of the detected terminal that belongs to described macrocell base stations is sent to described macrocell base stations.
10. method as claimed in claim 9, is characterized in that, microcell base station detects the terminal that belongs to described macrocell base stations, specifically comprises:
Microcell base station is the demodulated reference signal DMRS of ascending control channel PUCCH and the DMRS of Uplink Shared Channel PUSCH of the terminal distribution of the described macrocell base stations of ownership according to macrocell base stations, the DMRS of the PUCCH that the terminal receiving is sent detects, obtain the first detected value, and the DMRS of the PUSCH that the terminal that receives is sent detects, obtain the second detected value;
Determine that the terminal that the first detected value is greater than default the first threshold values is the terminal that belongs to described macrocell base stations, and determine that the terminal that the second detected value is greater than the second pre-set threshold value is the terminal that belongs to described macrocell base stations.
11. 1 kinds of macrocell base stations, is characterized in that, comprising:
Distribution module, be used to the first terminal of ownership self to divide the resource that is used in transmitting downlink data in cross time-slot, described cross time-slot is the cross time-slot between described first terminal and the second terminal that belongs to the microcell base station in described macrocell base stations coverage;
Sending module, for the resource information of the described resource of distributing is sent to the microcell base station in described macrocell base stations coverage, make described microcell base station be preferably the different resource of resource that described the second terminal distribution characterizes from described resource information, for described the second terminal transmit ascending data in described cross time-slot.
12. macrocell base stations as claimed in claim 11, is characterized in that,
Described distribution module, specifically for being used in for the first terminal of the described macrocell base stations of ownership divides the resource of transmitting downlink service data in cross time-slot; Described resource is different for the resource of transmitting uplink control information in described cross time-slot from the second terminal of the described microcell base station of ownership.
13. macrocell base stations as claimed in claim 11, is characterized in that, also comprise:
Receiver module, for receiving the end message of the detected terminal that belongs to described macrocell base stations that described microcell base station sends, the terminal that described end message is characterized is as first terminal.
14. macrocell base stations as claimed in claim 11, is characterized in that,
Described distribution module, specifically for dividing and be used in the resource that the continuous Resource Block of transmitting downlink data characterizes in cross time-slot for the first terminal of the described macrocell base stations of ownership.
15. 1 kinds of microcell base stations, is characterized in that, comprising:
Receiver module, for receiving the resource information that macrocell base stations is the resource for transmitting downlink data in cross time-slot of the first terminal distribution of the described macrocell base stations of ownership, described microcell base station is in the coverage of described macrocell base stations, and described cross time-slot is the cross time-slot between described first terminal and the second terminal of the described microcell base station of ownership;
The first distribution module, the different resource of resource that is used to described the second terminal priority allocation to characterize from described resource information, for transmit ascending data in described cross time-slot.
16. microcell base stations as claimed in claim 15, is characterized in that,
Described the first distribution module, specifically for being the different resource of resource that described the second terminal priority allocation characterizes from described resource information, for transmit uplink business data in described cross time-slot.
17. microcell base stations as claimed in claim 15, is characterized in that, also comprise:
The second distribution module, for after described microcell base station is preferentially all distributed to described the second terminal by the resources different resource characterizing from described resource information, also exist unallocated when for the second terminal of the resource of transmit ascending data in described cross time-slot, described microcell base station stops as unallocated the second terminal distribution to resource is for the resource of transmit ascending data in described cross time-slot, or after described microcell base station is preferentially all distributed to described the second terminal by the resources different resource characterizing from described resource information, also exist unallocated when for the second terminal of the resource of transmit ascending data in described cross time-slot, described microcell base station is the identical resource of resource that unallocated appointment the second terminal distribution in the second terminal of resource characterizes with described resource information, for transmit ascending data in described cross time-slot.
18. microcell base stations as claimed in claim 15, is characterized in that,
Described the first distribution module, specifically for preferentially, by the resources different resource characterizing from described resource information, priority allocation is given second terminal with real time business, for transmit ascending data in described cross time-slot.
19. microcell base stations as claimed in claim 15, is characterized in that, also comprise:
Detection module, for detection of the terminal that belongs to described macrocell base stations;
Sending module, for sending to described macrocell base stations by the end message of the detected terminal that belongs to described macrocell base stations.
20. microcell base stations as claimed in claim 19, is characterized in that,
Described detection module, specifically for according to macrocell base stations being the demodulated reference signal DMRS of ascending control channel PUCCH and the DMRS of Uplink Shared Channel PUSCH that belongs to the terminal distribution of described macrocell base stations, the DMRS of the PUCCH that the terminal receiving is sent detects, obtain the first detected value, and the DMRS of the PUSCH that the terminal that receives is sent detects, obtain the second detected value; Determine that the terminal that the first detected value is greater than default the first threshold values is the terminal that belongs to described macrocell base stations, and determine that the terminal that the second detected value is greater than the second pre-set threshold value is the terminal that belongs to described macrocell base stations.
21. 1 kinds of resource allocation systems, is characterized in that, comprising:
Macrocell base stations, be used to the first terminal of ownership self to divide the resource that is used in transmitting downlink data in cross time-slot, described cross time-slot is the cross time-slot between described first terminal and the second terminal that belongs to the microcell base station in described macrocell base stations coverage; The resource information of the described resource of distributing is sent to the microcell base station in described macrocell base stations coverage;
Microcell base station, for receiving the resource information that macrocell base stations is the resource for transmitting downlink data in cross time-slot of the first terminal distribution of the described macrocell base stations of ownership, described microcell base station is in the coverage of described macrocell base stations; The different resource of resource characterizing from described resource information for described the second terminal priority allocation, for transmit ascending data in described cross time-slot.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016138664A1 (en) * | 2015-03-05 | 2016-09-09 | Qualcomm Incorporated | Coordination between macro cell and small cell to handle interference for flexible duplex system |
| CN110999137A (en) * | 2017-08-10 | 2020-04-10 | 株式会社Ntt都科摩 | User device and reference signal transmission method |
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2012
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016138664A1 (en) * | 2015-03-05 | 2016-09-09 | Qualcomm Incorporated | Coordination between macro cell and small cell to handle interference for flexible duplex system |
| CN110999137A (en) * | 2017-08-10 | 2020-04-10 | 株式会社Ntt都科摩 | User device and reference signal transmission method |
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