CN105282858A - Unauthorized carrier wave coordination and coordination processing method and device - Google Patents
Unauthorized carrier wave coordination and coordination processing method and device Download PDFInfo
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- CN105282858A CN105282858A CN201410241173.2A CN201410241173A CN105282858A CN 105282858 A CN105282858 A CN 105282858A CN 201410241173 A CN201410241173 A CN 201410241173A CN 105282858 A CN105282858 A CN 105282858A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention provides an unauthorized carrier wave coordination and coordination processing method and device. The coordination method comprises the steps that a first base station acquires indicating information used for indicating that the first base station occupies unauthorized carrier wave; and the first base station transmits the indicating information to a second base station and/or a terminal. With application of the technical scheme, the technical problem of no solution for reducing interference between the adjacent base stations when the unauthorized carrier wave is used in the prior art can be solved so that interference between the adjacent base stations when the unauthorized carrier wave is used can be avoided or reduced.
Description
Technical field
The present invention relates to the communications field, especially relate to a kind of coordination of unauthorized carrier wave, coordination processing method and device.
Background technology
Unauthorized carrier wave (exempt from authorize frequency spectrum) refer to meet government department (as, State Radio Regulatory Commission) under pertinent regulations (radio control), do not need to authorize the frequency spectrum (or carrier wave) that just can directly use.In our daily life, microwave oven, remote toy aircraft, wireless mouse, Wireless Keyboard, high-fidelity wireless Internet access (WirelessFidelity is called for short WiFi) etc. all employ unauthorized carrier wave.
Because various equipment can use unauthorized carrier wave, may mutually disturb between them, this may cause the data that unauthorized carrier wave transmits to make a mistake.For reducing or avoiding this mistake, before the unauthorized carrier wave of use, preferably consult resource between neighbouring device how to use (such as, inform adjacent sites, oneself this website needs how long to use).
In other instances, unauthorized carrier wave needs could be used by competition.If base station (comprising WiFi access point) not competition to resource, then can not use unauthorized carrier wave.
Long Term Evolution (LongTermEvolution is called for short LTE) is the mobile communication system operated on mandate carrier wave that 3G (Third Generation) Moblie partner program (hereinafter referred to as 3GPP) is released.LTE has the stable release of Rel-8 to Rel-11 totally 4 complete back compatibles at present, and wherein Rel-10 and Rel-11 supports carrier aggregation (CarrierAggregation is called for short CA) function.
According to the agreement TS36.211-b50 physical channel of 3GPP and Section of 6.7 Physical Control Format Indicator Channel (Physicalcontrolformatindicatorchannel of modulation (PhysicalChannelsandModulation), referred to as PCFICH), subscriber equipment (UserEquipment is told by PCFICH in base station, referred to as UE), current descending sub frame has how many symbols for Physical Downlink Control Channel (hereinafter referred to as PDCCH).That is, control format instruction (hereinafter referred to as CFI) value is loaded with above PCFICH.
According to Section 6.7 of the agreement TS36.211-b50 of 3GPP, PCFICH launches on first symbol of a descending sub frame, takies 16 Resource Units (hereinafter referred to as RE) altogether.From the system bandwidth (1.4MHz – 20MHz) that current LTE system is supported, (on first symbol) PCFICH does not take in whole system bandwidth.
According to the agreement TS36.212-b20 (Multiplexingandchannelcoding of 3GPP; Multiplexing and chnnel coding) 5.3.4 save (Controlformatindicator; Control format indicates), the desirable at present value of CFI is 1,2,3,4 (wherein " 4 " they are reserved value), as shown in table 1.
Table 1
According to Section 6.7 of the agreement TS36.211-b50 of 3GPP, base station can configure multicast Single frequency network subframe (hereinafter referred to as MBSFN sub-frame) to UE.In the MBSFN subframe, one, foremost or 2 symbols are for launching down control channel (comprising PCFICH, PHICH and PDCCH); Symbol below can be used for transmit physical Multicast Channel (hereinafter referred to as PMCH), Physical Downlink Shared Channel (hereinafter referred to as PDSCH), or does not launch whatever.
In the MBSFN subframe, there is the demodulation of cell reference signals (hereinafter referred to as CRS) for above-mentioned down control channel in one, foremost or 2 symbols.CRS may produce interference to adjacent base station.
According to the conclusion (" Final_ReportWG1#68b_v110 ") of 3GPPRAN1#68bis meeting, in new carrier type (hereinafter referred to as NCT), every 5 subframes (namely, every 5 milliseconds) there will be a subframe with CRS (subframe is a millisecond), if other 4 subframes are scheduling not, be then completely blank.So, radio frames (that is, 10 milliseconds) has the time of 20% is not completely blank.The subframe of non-fully blank may produce interference (that is, CRS may produce interference to adjacent base station) to adjacent base station.
5.3.4 according to the agreement TS36.211-b50 of 3GPP saves, Physical Uplink Shared Channel (hereinafter referred to as PUSCH) can take whole symbols (being 12 symbols under conventional CP, is 10 symbols under expansion CP) of a subframe except demodulated reference signal (hereinafter referred to as DM-RS).
In 3GPP wireless access network (hereinafter referred to as RAN) the 62nd plenary session that on December 3rd, 2013, – held on the 6th, many companies propose " LTE on unauthorized carrier wave " (LTEinUnlicensedspectrum; Hereinafter referred to as LTE-U).Many companies are thought, LTE-U can carry out work by the mode of CA---wherein authorize carrier wave to provide control information (DCI as mentioned above), unauthorized carrier wave is only used for transmitting data.Certainly, LTE-U carries out independent operation is also feasible.
In correlation technique, there is no the interference solution between the adjacent base station of minimizing when using unauthorized carrier wave.
Summary of the invention
For in correlation technique, there is no the technical problems such as the solution of the interference between the adjacent base station of minimizing when using unauthorized carrier wave, the invention provides a kind of coordination of unauthorized carrier wave, coordination processing method and device, at least to solve the problems of the technologies described above.
In order to achieve the above object, according to an aspect of the present invention, provide a kind of coordination approach of unauthorized carrier wave, comprising: the first base station obtains and is used to indicate the indication information that described first base station takies unauthorized carrier wave; Described first base station sends indication information to the second base station and/or terminal.
Preferably, described first base station sends indication information to the second base station and/or terminal, comprise one of following: described first base station sends described indication information on first symbol of each radio frames, and described first base station sends described indication information on first symbol of each subframe.
Preferably, described first base station take unauthorized carrier wave comprise following one of at least: whether described first base station takies described unauthorized carrier information; Described first base station takies the duration of described unauthorized carrier wave.
Preferably, the first base station obtains and is used to indicate the indication information that described first base station takies unauthorized carrier wave, comprising: described first base station sends Physical Control Format Indicator Channel by described first base station and determines.
Preferably, described first base station sends Physical Control Format Indicator Channel by described first base station and determines, comprises one of following: described first base station is determined by the number of repetition sending described Physical Control Format Indicator Channel; Described first base station is by when sending described Physical Control Format Indicator Channel, the part or all of Resource Unit of first symbol that described Physical Control Format Indicator Channel is shared in a subframe is determined, described first base station by sending known Serial No. to determine on described Physical Control Format Indicator Channel; Described first base station is determined by the side-play amount of Resource Unit shared by described Physical Control Format Indicator Channel.
In order to achieve the above object, according to a further aspect of the invention, additionally provide a kind of coordination approach of unauthorized carrier wave, comprising: the second base station receives and is used to indicate from the first base station the indication information that described first base station takies unauthorized carrier wave; Described second base station is coordinated to the use of described unauthorized carrier wave according to described indication information in described second base station.
Preferably, second base station receives and is used to indicate from the first base station the indication information that described first base station takies unauthorized carrier wave, comprise one of following: described second base station receives described indication information on first symbol of each radio frames, and described second base station receives described indication information on first symbol of each subframe.
In order to achieve the above object, according to a further aspect of the invention, additionally provide a kind of coordination processing method of unauthorized carrier wave, comprise: terminal is received from the radio frames of the first base station, and come from schedule information and/or the Physical Control Format Indicator Channel of described first base station, wherein, carry in described radio frames and be used to indicate the indication information that described first base station takies unauthorized carrier wave; Described terminal determines the subframe type of described radio frames according to described schedule information and/or described Physical Control Format Indicator Channel, and wherein, the type comprises: descending sub frame, sub-frame of uplink and mixing ascending-descending subframes; The subframe that described terminal indicates in described type according to described schedule information sends and/or receives data.
Preferably, first symbol of each described radio frames or each described subframe carries described indication information.
Preferably, described mixing ascending-descending subframes comprises the launch time of base station and the launch time of terminal in time; Described mixing ascending-descending subframes comprises the frequency resource of Base Transmitter and the frequency resource of terminal transmission in frequency; Described mixing ascending-descending subframes comprises the resource of Base Transmitter and the resource of terminal transmission on time and frequency resource; In described mixing ascending-descending subframes, if base station transmits information on first symbol of described mixing ascending-descending subframes, then terminal is when above-mentioned mixing ascending-descending subframes launches up channel, removes first symbol or two, the foremost symbol of described mixing ascending-descending subframes.
In order to achieve the above object, according to a further aspect of the invention, additionally providing a kind of conditioning unit of unauthorized carrier wave, be arranged in the first base station, comprise: acquisition module, being used to indicate for obtaining the indication information that described first base station takies unauthorized carrier wave; Sending module, for sending indication information to the second base station and/or terminal.
Preferably, described sending module, sends described indication information on first symbol in each radio frames or each subframe.
In order to achieve the above object, according to a further aspect of the invention, additionally provide a kind of conditioning unit of unauthorized carrier wave, be applied to the second base station, comprising: receiver module, being used to indicate from the first base station the indication information that described first base station takies unauthorized carrier wave for receiving; Coordination module, for coordinating described second base station to the use of described unauthorized carrier wave according to described indication information.
Preferably, described receiver module, receives described indication information on first symbol in each radio frames or each subframe.
In order to achieve the above object, according to a further aspect of the invention, additionally provide a kind of Coordination Treatment device of unauthorized carrier wave, comprise: receiver module, for being received from the radio frames of the first base station, and come from schedule information and/or the Physical Control Format Indicator Channel of described first base station, wherein, carry in described radio frames and be used to indicate the indication information that described first base station takies unauthorized carrier wave; Determination module, for determining the type of the subframe of described radio frames according to described schedule information and/or described Physical Control Format Indicator Channel, wherein, the type comprises: descending sub frame, sub-frame of uplink and mixing ascending-descending subframes; Communication module, sends and/or receives data in the subframe indicated in described type according to described schedule information.
Preferably, described receiver module is also for receiving described radio frames in a case where: on first symbol of each described radio frames or each described subframe, carry described indication information.
Pass through the present invention, adopt the first base station to send to the second base station or terminal and be used to indicate the technological means that the first base station takies the indication information of unauthorized carrier wave, solve in correlation technique, there is no the technical problems such as the solution of the interference between the adjacent base station of minimizing when using unauthorized carrier wave, thus can avoid or reduce interference when using unauthorized carrier wave between adjacent base station.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the coordination approach of unauthorized carrier wave according to the embodiment of the present invention;
Fig. 2 is the structured flowchart of the conditioning unit of unauthorized carrier wave according to the embodiment of the present invention;
Fig. 3 is another flow chart of the coordination approach of unauthorized carrier wave according to the embodiment of the present invention;
Fig. 4 is another structured flowchart of the conditioning unit of unauthorized carrier wave according to the embodiment of the present invention;
Fig. 5 is the flow chart of the coordination processing method of unauthorized carrier wave according to the embodiment of the present invention;
Fig. 6 is the structured flowchart of the Coordination Treatment device of unauthorized carrier wave according to the embodiment of the present invention;
Fig. 7 is the schematic diagram sending indication information (PCFICH) according to the preferred embodiment of the invention on first symbol of each radio frames;
Fig. 8 is a RE distribution schematic diagram of Physical Control Format Indicator Channel according to the preferred embodiment of the invention;
Fig. 9 is the 2nd RE distribution schematic diagram of Physical Control Format Indicator Channel according to the preferred embodiment of the invention;
Figure 10 is the 3rd RE distribution schematic diagram of Physical Control Format Indicator Channel according to the preferred embodiment of the invention;
Figure 11 forms schematic diagram one (only mixing in time) for mixing ascending-descending subframes according to the preferred embodiment of the invention;
Figure 12 forms schematic diagram two (only mixing in time) for mixing ascending-descending subframes according to the preferred embodiment of the invention;
Figure 13 forms schematic diagram (mixing over time and frequency) for mixing ascending-descending subframes according to the preferred embodiment of the invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Fig. 1 is the flow chart of the coordination approach of unauthorized carrier wave according to the embodiment of the present invention.As shown in Figure 1, the method comprising the steps of S102-S104:
Step S102, the first base station obtains and is used to indicate the indication information that the first base station takies unauthorized carrier wave;
Step S104, the first base station sends indication information to the second base station and/or terminal.
By each treatment step above-mentioned, because the first base station have sent above-mentioned indication information to the second base station and/or base station, therefore, second base station can be reduced when using unauthorized carrier wave according to this indication information as far as possible, and the interference between the first base station, especially in the first base station and the second base station each other adjacent base station time (disturbing stronger), effectively avoid the interference between adjacent base station.
The implementation of step S104 has multiple, and such as the first base station and the second base station and terminal agreement adopt the designated symbols of radio frames to send, and also can send above-mentioned indication information on first symbol of each radio frames or each subframe, but be not limited thereto.Wherein, first symbol of each radio frames sends on first symbol that indication information can be understood as first subframe in each radio frames and send above-mentioned indication information.
When embody rule, if whole radio frames is not dispatched, then the first base station does not send above-mentioned indication information.Each subframe in a radio frames can be made into completely blank subframe by base station, this completely blank subframe can without any signal or/and channel.
The indication information that above-mentioned first base station takies unauthorized carrier wave includes but not limited to following content: above-mentioned first base station takies the duration of above-mentioned unauthorized carrier channel; Whether the first base station takies the information (which is included in/which subframe on use) of unauthorized carrier wave; First base station takies the duration of described unauthorized carrier wave.Utilize this duration first base station that the second base station, base station first just can be indicated to need to use the time of unauthorized carrier wave like this.
The implementation of step S102 has multiple, such as, can send Physical Control Format Indicator Channel by above-mentioned first base station and determine.Now, determine mode include but not limited to following one of at least: the first base station is determined by the number of repetition sending above-mentioned Physical Control Format Indicator Channel; First base station is by when sending above-mentioned Physical Control Format Indicator Channel, and the part or all of Resource Unit of first symbol that Physical Control Format Indicator Channel is shared in a subframe is determined; First base station is determined by sending known Serial No. on above-mentioned Physical Control Format Indicator Channel; First base station is determined by the side-play amount of Resource Unit shared by Physical Control Format Indicator Channel.
Additionally provide a kind of conditioning unit of unauthorized carrier wave in the present embodiment, be arranged in the first base station, as shown in Figure 2, this device comprises:
Acquisition module 20, is used to indicate for obtaining the indication information that the first base station takies unauthorized carrier wave;
Sending module 22, is connected to acquisition module 20, for sending indication information to the second base station and/or terminal, wherein, and the first base station and the second base station adjacent base station each other.
In a preferred implementation of the present embodiment, sending module 22, also sends above-mentioned indication information on first symbol in each radio frames or each subframe.
It should be noted that, above-mentioned modules can be realized by software or hardware, for the latter, can realize in the following manner, but be not limited thereto: acquisition module 20 and sending module 22 lay respectively in first processor and the second processor; Or acquisition module 20 and sending module 22 are arranged in same processor.
In the present embodiment, additionally provide the coordination approach of another unauthorized carrier wave, as shown in Figure 3, the method comprises:
Step S302, the second base station receives and is used to indicate from the first base station the indication information that the first base station takies unauthorized carrier wave;
Step S304, the use of the second base station to above-mentioned unauthorized carrier wave is coordinated according to above-mentioned indication information in the second base station.Like this, second base station can be reduced when using unauthorized carrier wave according to this indication information as far as possible, and the interference between the first base station, especially in the first base station and the second base station each other adjacent base station time (disturbing stronger), effectively avoid the interference between adjacent base station.
In step S302, the second base station can receive above-mentioned indication information on first symbol of each radio frames and/or each subframe, but is not limited to this implementation.
For realizing said method, the present embodiment also provides the conditioning unit of another unauthorized carrier wave, is applied to the second base station, and as shown in Figure 4, this device comprises:
Receiver module 40, is used to indicate from the first base station the indication information that the first base station takies unauthorized carrier wave for receiving;
Coordination module 42, is connected to receiver module 40, for coordinating the use of the second base station to above-mentioned unauthorized carrier wave according to above-mentioned indication information.
In a preferred embodiment, receiver module 40, also receives above-mentioned indication information on first symbol in each radio frames or each subframe.
It should be noted that, above-mentioned modules can be realized by software or hardware, for the latter, can realize in the following manner, but be not limited thereto: receiver module 40 and Coordination module 42 lay respectively in first processor and the second processor; Or receiver module 40 and Coordination module 42 are arranged in same processor.
In the present embodiment, also provide a kind of coordination processing method of unauthorized carrier wave in end side, as shown in Figure 5, the method comprises:
Step S502, terminal is received from the radio frames of the first base station, and comes from schedule information and/or the Physical Control Format Indicator Channel of the first base station, wherein, carries and be used to indicate the indication information that the first base station takies unauthorized carrier wave in above-mentioned radio frames;
Step S504, terminal is according to the subframe type of above-mentioned schedule information and/or above-mentioned Physical Control Format Indicator Channel determination radio frames, and wherein, the type comprises: descending sub frame, sub-frame of uplink and mixing ascending-descending subframes;
Step S506, the subframe that terminal indicates at the above-mentioned type according to above-mentioned schedule information sends and/or receives data.Specifically can show as following form: terminal receives the data of Base Transmitter on above-mentioned descending sub frame according to schedule information; Terminal is according to schedule information transmitting data on above-mentioned sub-frame of uplink; Terminal receives or/and transmitting data on above-mentioned mixing ascending-descending subframes according to schedule information.
In step S502, above-mentioned indication information can be carried on first symbol of each radio frames or each subframe, but be not limited thereto.
In the present embodiment, above-mentioned mixing ascending-descending subframes comprises the launch time of base station and the launch time of terminal in time; Above-mentioned mixing ascending-descending subframes comprises the frequency resource of Base Transmitter and the frequency resource of terminal transmission in frequency; Above-mentioned mixing ascending-descending subframes comprises the resource of Base Transmitter and the resource of terminal transmission on time and frequency resource; In above-mentioned mixing ascending-descending subframes, if base station transmits information on first symbol of above-mentioned mixing ascending-descending subframes, then terminal is when above-mentioned mixing ascending-descending subframes launches up channel, removes first symbol or two, the foremost symbol of above-mentioned mixing ascending-descending subframes.
In the present embodiment, also provide a kind of Coordination Treatment device of unauthorized carrier wave, upload coordination processing method for realizing, as shown in Figure 6, this device comprises:
Receiver module 60, for being received from the radio frames of the first base station, and comes from schedule information and/or the Physical Control Format Indicator Channel of the first base station, wherein, carries and be used to indicate the indication information that the first base station takies unauthorized carrier wave in above-mentioned radio frames;
Determination module 62, is connected to receiver module 60, and for determining the subframe type of above-mentioned radio frames according to above-mentioned schedule information and/or above-mentioned Physical Control Format Indicator Channel, wherein, the type comprises: descending sub frame, sub-frame of uplink and mixing ascending-descending subframes;
Communication module 64, is connected to determination module 62, sends and/or receive data in the subframe indicated at the above-mentioned type according to above-mentioned schedule information.
In a preferred embodiment, receiver module 60 is also for receiving above-mentioned radio frames in a case where: on first symbol of each above-mentioned radio frames or each subframe, carry above-mentioned indication information.
In order to understand above-described embodiment and preferred implementation thereof better, describe in detail below in conjunction with preferred embodiment.
Embodiment one:
Base station is launched and is used to indicate the indication information (i.e. PCFICH) that the first base station takies unauthorized carrier wave on first symbol of each radio frames, as shown in Figure 7.
Base station can be made into completely blank subframe each subframe in a radio frames.If any UE (uplink and downlink) is not dispatched in base station, then adjacent base station is not disturbed.
Above-mentioned indication information can be provided by Base Transmitter Physical Control Format Indicator Channel.
Above-mentioned Physical Control Format Indicator Channel can take the part resource unit of first symbol of a subframe.As shown in Fig. 8 and 9 figure.Fig. 8 represents that Physical Control Format Indicator Channel occupies 16 RE altogether; Fig. 9 represents that Physical Control Format Indicator Channel occupies 16x62=992 RE (2 each empty 4 RE) altogether, and middle also have CRS to account for 2x100=200 RE.
The CFI value that above-mentioned Physical Control Format Indicator Channel uses is 4.If LTE-U runs in CA mode, so control channel (PDCCH/EPDCCH) is from mandate carrier wave; If LTE-U is independent operation, so LTE-U base station needs to configure EPDCCH (comprising public search space) to UE.
Above-mentioned be 4 CFI value represent this base station take whole radio frames (that is, whole 10 subframes).
Assuming that above-mentioned 10 subframes are all for descending scheduling, then terminal receives the data of Base Transmitter on above-mentioned descending sub frame according to schedule information.
Visible, the scheme that the present embodiment provides can reduce use unauthorized carrier wave time adjacent base station between interference, instruction adjacent base station, home base stations needs how long to use unauthorized carrier wave.
Embodiment two:
Base station is launched and is used to indicate the indication information (i.e. PCFICH) that the first base station takies unauthorized carrier wave on first symbol of each radio frames, as shown in Figure 7
Base station can be made into completely blank subframe each subframe in a radio frames.If any UE (uplink and downlink) is not dispatched in base station, then adjacent base station is not disturbed.
Above-mentioned indication information can be provided by Base Transmitter Physical Control Format Indicator Channel.
Above-mentioned Physical Control Format Indicator Channel can take the part resource unit of first symbol of a subframe or whole Resource Unit.As seen in figs. 8-10.Fig. 8 represents that Physical Control Format Indicator Channel occupies 16 RE altogether; Fig. 9 represents that Physical Control Format Indicator Channel occupies 16x62=992 RE (2 each empty 4 RE) altogether; Figure 10 represents that Physical Control Format Indicator Channel occupies 16x62+4+4=1000 RE altogether.
The CFI value that above-mentioned Physical Control Format Indicator Channel uses is 1 or 2 or 3.If LTE-U runs in CA mode, so control channel (PDCCH/EPDCCH) can from mandate carrier wave; If LTE-U is independent operation, so LTE-U base station can configure EPDCCH (comprising public search space) to UE.
Above-mentioned be 1 or 2 or 3 CFI value represent this base station take 2 continuously
cFIindividual subframe (that is, 2 or 4 or 8 subframes).
Assuming that above-mentioned 2
cFIindividual subframe is all for descending scheduling, then terminal receives the data of Base Transmitter on above-mentioned descending sub frame according to schedule information.
Assuming that above-mentioned 2
3before=8 subframes, 4 subframes are used for descending scheduling, after 4 subframes be used for uplink scheduling, then terminal receives the data of Base Transmitter on above-mentioned descending sub frame according to schedule information; Terminal gives Base Transmitter data according to schedule information on above-mentioned sub-frame of uplink.
As can be seen here, the interference between the same adjacent base station that can reduce when using unauthorized carrier wave of the scheme that the present embodiment proposes, instruction adjacent base station, oneself this base station needs how long to use unauthorized carrier wave.
Embodiment three:
Base station is launched and is used to indicate the indication information (i.e. PCFICH) that the first base station takies unauthorized carrier wave on first symbol of each radio frames, as shown in Figure 7.
Base station can be made into completely blank subframe each subframe in a radio frames.If any UE (uplink and downlink) is not dispatched in base station, then adjacent base station is not disturbed.
Above-mentioned indication information can be provided by Base Transmitter Physical Control Format Indicator Channel.
Above-mentioned Physical Control Format Indicator Channel can take the part or all of Resource Unit of first symbol of a subframe.
Above-mentioned Physical Control Format Indicator Channel can take the part resource unit of first symbol of a subframe.As Figure 8-9.Fig. 8 represents that Physical Control Format Indicator Channel occupies 16 RE altogether; Fig. 9 represents that Physical Control Format Indicator Channel occupies 16x62=992 RE (2 each empty 4 RE) altogether.
The CFI value that above-mentioned Physical Control Format Indicator Channel uses is 1.If LTE-U runs in CA mode, so control channel (PDCCH/EPDCCH) is from mandate carrier wave; If LTE-U is independent operation, so LTE-U base station needs to configure EPDCCH (comprising public search space) to UE.
Above-mentioned be 1 CFI value represent this base station only take present sub-frame.
Assuming that 5 subframes all transmit above-mentioned Physical Control Format Indicator Channel before above-mentioned radio frames, and hypothesis 4, foremost subframe is used for descending scheduling, and suppose that a subframe is used for uplink scheduling backmost, then terminal receives the data of Base Transmitter on above-mentioned descending sub frame according to schedule information.
Because the 5th the existing downlink of subframe has again up transmitting, therefore it is a mixing ascending-descending subframes.
In above-mentioned mixing ascending-descending subframes, if base station transmits information on first symbol of this subframe, then terminal is when above-mentioned mixing ascending-descending subframes launches up channel, needs one, foremost symbol (as shown in figure 12) or two, the foremost symbol (as shown in figure 11) of removing this subframe.
Terminal receives or/and transmitting data on above-mentioned mixing ascending-descending subframes according to schedule information.
Interference between the adjacent base station adopting the scheme that provides of the present embodiment can reduce when the unauthorized carrier wave of use, indicate adjacent base station, oneself this base station needs how long to use unauthorized carrier wave.
Embodiment four:
Base station is launched and is used to indicate the indication information (i.e. PCFICH) that the first base station takies unauthorized carrier wave on first symbol of each radio frames, as shown in Figure 7.
Base station can be made into completely blank subframe each subframe in a radio frames.If any UE (uplink and downlink) is not dispatched in base station, then adjacent base station is not disturbed.
Above-mentioned indication information can be provided by Base Transmitter Physical Control Format Indicator Channel.
Above-mentioned Physical Control Format Indicator Channel can take the part or all of Resource Unit of first symbol of a subframe.
Above-mentioned Physical Control Format Indicator Channel can take the part resource unit of first symbol of a subframe.As Figure 8-9.Fig. 8 represents that Physical Control Format Indicator Channel occupies 16 RE altogether; Fig. 9 represents that Physical Control Format Indicator Channel occupies 16x62=992 RE (2 each empty 4 RE) altogether.
The CFI value that above-mentioned Physical Control Format Indicator Channel uses is 0.If LTE-U runs in CA mode, so control channel (PDCCH/EPDCCH) is from mandate carrier wave; If LTE-U is independent operation, so LTE-U base station needs to configure EPDCCH (comprising public search space) to UE.
Above-mentioned be 0 CFI value represent this base station only take present sub-frame.
Assuming that 5 subframes all transmit above-mentioned Physical Control Format Indicator Channel before above-mentioned radio frames, and hypothesis 4, foremost subframe is used for descending scheduling, and hypothesis backmost before a subframe Physical Resource Block (PRB) of half for uplink scheduling, after the Physical Resource Block (PRB) of half for descending scheduling (as shown in figure 13).
Because the 5th the existing downlink of subframe has again up transmitting, therefore it is a mixing ascending-descending subframes.
In above-mentioned mixing ascending-descending subframes, if base station transmits information on first symbol of this subframe, then terminal is when above-mentioned mixing ascending-descending subframes launches up channel, needs one, foremost symbol (as shown in Figure 12 figure) or two, the foremost symbol (as shown in figure 11) of removing this subframe.
Terminal receives or/and transmitting data on above-mentioned mixing ascending-descending subframes according to schedule information.
Embodiment five:
Base station is launched and is used to indicate the indication information (i.e. PCFICH) that the first base station takies unauthorized carrier wave on first symbol of each radio frames, as shown in Figure 7.
Base station can be made into completely blank subframe each subframe in a radio frames.If any UE (uplink and downlink) is not dispatched in base station, then adjacent base station is not disturbed.
Above-mentioned indication information can be provided by Base Transmitter Physical Control Format Indicator Channel.
Above-mentioned Physical Control Format Indicator Channel can take the part resource unit of first symbol of a subframe.As Figure 8-9.Fig. 8 represents that Physical Control Format Indicator Channel occupies 16 RE altogether; Fig. 9 represents that Physical Control Format Indicator Channel altogether occupies 16xN RE, N and represents control channel number of repetition.
The CFI value that above-mentioned Physical Control Format Indicator Channel uses is 4.If LTE-U runs in CA mode, so control channel (PDCCH/EPDCCH) is from mandate carrier wave; If LTE-U is independent operation, so LTE-U base station needs to configure EPDCCH (comprising public search space) to UE.
Above-mentioned number of repetition represents the number of subframes that base station takies.Such as, assuming that N=62 represents " taking whole radio frames (namely; whole 10 subframes) ", N=61 represents " taking 9 follow-up subframes ", N=60 represents " taking 8 follow-up subframes ", N=59 represents " taking 7 follow-up subframes ", N=58 represents " taking 6 follow-up subframes ", N=57 represents " taking 5 follow-up subframes ", N=56 represents " taking 4 follow-up subframes ", N=55 represents " taking 3 follow-up subframes ", and N=54 represents " taking 2 follow-up subframes ", and N=53 represents " taking present sub-frame ".
Now suppose N=62, then base station takies 10 subframes, and supposes that above-mentioned 10 subframes are all for descending scheduling, then terminal receives the data of Base Transmitter on above-mentioned descending sub frame according to schedule information.
The scheme that the present embodiment provides can reduce equally use unauthorized carrier wave time adjacent base station between interference, instruction adjacent base station, oneself this base station needs how long to use unauthorized carrier wave.
Embodiment six:
Base station is launched and is used to indicate the indication information (i.e. PCFICH) that the first base station takies unauthorized carrier wave on first symbol of each radio frames, as shown in Figure 7.
Base station can be made into completely blank subframe each subframe in a radio frames.If any UE (uplink and downlink) is not dispatched in base station, then adjacent base station is not disturbed.
Above-mentioned indication information can be provided by Base Transmitter Physical Control Format Indicator Channel.
Above-mentioned Physical Control Format Indicator Channel can take the part resource unit of first symbol of a subframe.Suppose there are 2 base stations, first base, first symbol kept oneself in the foreground above 50 PRB launch PCFICH (system bandwidth is 100 PRB) and on first symbol of 50 PRB below without any channel/signal launch, second first symbol of base station below above 50 PRB launch PCFICH (system bandwidth is 100 PRB) and on first symbol of 50 PRB above without any channel/signal launch.Base station by receive do not have the PCFICH of oneself to launch those PRB above PCFICH (available different antenna realizes the separation realization receiving/launch), can know whether and there occurs collision.Know after there occurs collision, time backing can be carried out in base station.
The CFI value that above-mentioned Physical Control Format Indicator Channel uses is 4.If LTE-U runs in CA mode, so control channel (PDCCH/EPDCCH) is from mandate carrier wave; If LTE-U is independent operation, so LTE-U base station needs to configure EPDCCH (comprising public search space) to UE.
Above-mentioned be 4 CFI value represent this base station take whole radio frames (that is, whole 10 subframes).
Assuming that above-mentioned 10 subframes are all for descending scheduling, then terminal receives the data of Base Transmitter on above-mentioned descending sub frame according to schedule information.
The scheme that the present embodiment provides can reduce use unauthorized carrier wave time adjacent base station between interference, instruction adjacent base station, oneself this base station needs how long to use unauthorized carrier wave.
In another embodiment, additionally provide a kind of software, this software is for performing the technical scheme described in above-described embodiment and preferred implementation.
In another embodiment, additionally provide a kind of storage medium, store above-mentioned software in this storage medium, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1. a coordination approach for unauthorized carrier wave, is characterized in that, comprising:
First base station obtains and is used to indicate the indication information that described first base station takies unauthorized carrier wave;
Described first base station sends indication information to the second base station and/or terminal.
2. method according to claim 1, is characterized in that, described first base station sends indication information to the second base station and/or terminal, comprises one of following:
Described first base station sends described indication information on first symbol of each radio frames;
Described first base station sends described indication information on first symbol of each subframe.
3. method according to claim 1, is characterized in that, described first base station take unauthorized carrier wave comprise following one of at least:
Whether described first base station takies described unauthorized carrier information; Described first base station takies the duration of described unauthorized carrier wave.
4. method according to claim 1, is characterized in that, the first base station obtains and is used to indicate the indication information that described first base station takies unauthorized carrier wave, comprising:
Described first base station sends Physical Control Format Indicator Channel by described first base station and determines.
5. method according to claim 4, is characterized in that, described first base station sends Physical Control Format Indicator Channel by described first base station and determines, comprises one of following:
Described first base station is determined by the number of repetition sending described Physical Control Format Indicator Channel;
Described first base station is by when sending described Physical Control Format Indicator Channel, and the part or all of Resource Unit of first symbol that described Physical Control Format Indicator Channel is shared in a subframe is determined;
Described first base station by sending known Serial No. to determine on described Physical Control Format Indicator Channel;
Described first base station is determined by the side-play amount of Resource Unit shared by described Physical Control Format Indicator Channel.
6. a coordination approach for unauthorized carrier wave, is characterized in that, comprising:
Second base station receives and is used to indicate from the first base station the indication information that described first base station takies unauthorized carrier wave;
Described second base station is coordinated to the use of described unauthorized carrier wave according to described indication information in described second base station.
7. method according to claim 6, is characterized in that, the second base station receives and is used to indicate from the first base station the indication information that described first base station takies unauthorized carrier wave, comprises one of following:
Described second base station receives described indication information on first symbol of each radio frames;
Described second base station receives described indication information on first symbol of each subframe.
8. a coordination processing method for unauthorized carrier wave, is characterized in that, comprising:
Terminal is received from the radio frames of the first base station, and comes from schedule information and/or the Physical Control Format Indicator Channel of described first base station, wherein, carries and be used to indicate the indication information that described first base station takies unauthorized carrier wave in described radio frames;
Described terminal determines the subframe type of described radio frames according to described schedule information and/or described Physical Control Format Indicator Channel, and wherein, the type comprises: descending sub frame, sub-frame of uplink and mixing ascending-descending subframes;
The subframe that described terminal indicates in described type according to described schedule information sends and/or receives data.
9. method according to claim 8, is characterized in that, first symbol of each described radio frames or each described subframe carries described indication information.
10. method according to claim 8, is characterized in that,
Described mixing ascending-descending subframes comprises the launch time of base station and the launch time of terminal in time;
Described mixing ascending-descending subframes comprises the frequency resource of Base Transmitter and the frequency resource of terminal transmission in frequency;
Described mixing ascending-descending subframes comprises the resource of Base Transmitter and the resource of terminal transmission on time and frequency resource;
In described mixing ascending-descending subframes, if base station transmits information on first symbol of described mixing ascending-descending subframes, then terminal is when above-mentioned mixing ascending-descending subframes launches up channel, removes first symbol or two, the foremost symbol of described mixing ascending-descending subframes.
The conditioning unit of 11. 1 kinds of unauthorized carrier waves, is arranged in the first base station, it is characterized in that, comprising:
Acquisition module, is used to indicate for obtaining the indication information that described first base station takies unauthorized carrier wave;
Sending module, for sending indication information to the second base station and/or terminal.
12. devices according to claim 11, is characterized in that, described sending module, on first symbol in each radio frames or each subframe, send described indication information.
The conditioning unit of 13. 1 kinds of unauthorized carrier waves, is applied to the second base station, it is characterized in that, comprising:
Receiver module, is used to indicate from the first base station the indication information that described first base station takies unauthorized carrier wave for receiving;
Coordination module, for coordinating described second base station to the use of described unauthorized carrier wave according to described indication information.
14. devices according to claim 13, is characterized in that, described receiver module, on first symbol in each radio frames or each subframe, receive described indication information.
The Coordination Treatment device of 15. 1 kinds of unauthorized carrier waves, is characterized in that, comprising:
Receiver module, for being received from the radio frames of the first base station, and come from schedule information and/or the Physical Control Format Indicator Channel of described first base station, wherein, carry in described radio frames and be used to indicate the indication information that described first base station takies unauthorized carrier wave;
Determination module, for determining the type of the subframe of described radio frames according to described schedule information and/or described Physical Control Format Indicator Channel, wherein, the type comprises: descending sub frame, sub-frame of uplink and mixing ascending-descending subframes;
Communication module, sends and/or receives data in the subframe indicated in described type according to described schedule information.
16. devices according to claim 15, is characterized in that, described receiver module is also for receiving described radio frames in a case where: on first symbol of each described radio frames or each described subframe, carry described indication information.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410241173.2A CN105282858A (en) | 2014-05-30 | 2014-05-30 | Unauthorized carrier wave coordination and coordination processing method and device |
| PCT/CN2014/087610 WO2015180338A1 (en) | 2014-05-30 | 2014-09-26 | Unlicensed carrier coordination and coordination processing methods and apparatuses |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410241173.2A CN105282858A (en) | 2014-05-30 | 2014-05-30 | Unauthorized carrier wave coordination and coordination processing method and device |
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| CN201410241173.2A Withdrawn CN105282858A (en) | 2014-05-30 | 2014-05-30 | Unauthorized carrier wave coordination and coordination processing method and device |
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